<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0065-1737</journal-id>
<journal-title><![CDATA[Acta zoológica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Zool. Mex]]></abbrev-journal-title>
<issn>0065-1737</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0065-17372010000500001</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Uso das minhocas como bioindicadoras ambientais: princípios e práticas - o 3° Encontro Latino Americano de Ecologia e Taxonomia de Oligoquetas (ELAETAO3)]]></article-title>
<article-title xml:lang="es"><![CDATA[Uso de las lombrices de tierra como bioindicadoras ambientales: principios y prácticas - el 3° Encuentro Latino Americano de Ecología y Taxonomía de Oligoquetos (ELAETAO3)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[BROWN]]></surname>
<given-names><![CDATA[George G.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[DOMÍNGUEZ]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Embrapa Florestas  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidade de Vigo Departamento de Ecoloxía e Bioloxía Animal ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2010</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2010</year>
</pub-date>
<volume>26</volume>
<numero>spe2</numero>
<fpage>1</fpage>
<lpage>18</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0065-17372010000500001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0065-17372010000500001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0065-17372010000500001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Dentre os animais que vivem no solo, as minhocas figuram como um dos mais importantes, por serem engenheiras do ecossistema e realizarem vários serviços ambientais, incluindo o controle biológico, a decomposição da matéria orgânica, a ciclagem de nutrientes, a formação e a agregação do solo, fatores estes que afetam geralmente de forma positiva o crescimento das plantas. Além disso, as minhocas também são muito úteis como bioindicadores da qualidade ambiental, estando relacionadas às condições ambientais como a fertilidade do solo e sendo susceptíveis à perturbação e contaminação do hábitat. No entanto, seu uso como indicadoras ambientais tem sido reduzido, e a pesquisa sobre a ecologia desses animais e sua importância para os ecossistemas latino-americanos ainda é incipiente. Apesar de já existir um conhecimento razoável sobre algumas das espécies mais comuns, o conhecimento da biologia básica e ecologia geral da maioria das mais de 960 espécies de minhocas latino-americanas, a maioria delas nativas e endêmicas, continua ínfimo. No 3° Encontro Latino Americano de Ecologia e Taxonomia de Oligoquetas (ELAETAO3), realizado em Curitiba, em dezembro de 2007, discutiram-se diversos temas relacionados aos princípios e práticas e limitações do uso das minhocas como bioindicadoras ambientais. Os trabalhos publicados nesse número especial abordam diversos temas relacionados ao uso das minhocas como bioindicadoras de perturbação ou de condições ambientais em ecossistemas naturais; da fertilidade e potencial produtivo do solo; da contaminação do solo; do manejo de ecossistemas; e métodos de coleta e estudos quantitativos (incluindo a genética molecular) para avaliação do potencial como indicadoras. Outros trabalhos abordaram temas mais gerais, como a biodiversidade de oligoquetas na América do Sul, o conhecimento tradicional sobre minhocas e sua importância na com-postagem de resíduos orgânicos, incluindo a biologia das espécies envolvidas e o uso do húmus como biofertilizante. Esperamos, portanto, que esse número especial contribua, para o melhor conhecimento do potencial das minhocas como indicadoras ambientais na América Latina.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Entre los animales que viven en el suelo, las lombrices de tierra figuran como uno de los más importantes, pues son ingenieras del ecosistema y realizan varios servicios ambientales, incluyendo el control biológico, la descomposición de la materia orgánica, el ciclado de nutrientes, la formación y la agregación del suelo, factores éstos que afectan generalmente de forma positiva el crecimiento de las plantas. Las lombrices también son muy útiles como bioindicadoras de la calidad ambiental, estando relacionadas con las condiciones ambientales como la fertilidad del suelo y son susceptibles a la perturbación y contaminación del hábitat. Sin embargo, su uso como indicadoras ambientales ha sido reducido y la investigación sobre la ecología de estos animales y su importancia para los ecosistemas latino-americanos aún es incipiente. A pesar del conocimiento razonable sobre algunas de las especies más comunes, se sabe muy poco sobre la biología básica y ecología general de la mayor parte de las más de 960 especies de lombrices latino-americanas, la mayoría de ellas nativas y endémicas. En el 3er Encuentro Latino Americano de Ecología y Taxonomía de Oligoquetas (ELAETAO3), realizado en Curitiba, en diciembre del 2007, se discutieron diversos temas relacionados con los principios y prácticas y limitaciones del uso de las lombrices como bioindicadoras ambientales. Los trabajos publicados en este número especial abordan diversos temas relacionados con el uso de las lombrices como bioindicadoras de perturbación o de condiciones ambientales en ecosistemas naturales; de la fertilidad y potencial productivo del suelo; de la contaminación del suelo; del manejo de ecosistemas; y métodos de colecta y estudios cuantitativos (incluyendo la genética molecular) para evaluar el potencial como indicadoras. Otros trabajos abordaron temas más generales, como la biodiversidad de lombrices en América Latina, el conocimiento tradicional sobre lombrices y su importancia en el compostaje de residuos orgánicos, incluyendo la biología de las especies involucradas y el uso de los excrementos como biofertilizantes. Esperamos, por lo tanto, que este número especial contribuya para el mejor conocimiento del potencial de las lombrices como indicadoras ambientales en Latinoamérica.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Qualidade do solo]]></kwd>
<kwd lng="pt"><![CDATA[Oligochaeta]]></kwd>
<kwd lng="pt"><![CDATA[manejo sustentável]]></kwd>
<kwd lng="pt"><![CDATA[biodiversidade]]></kwd>
<kwd lng="pt"><![CDATA[perturbação]]></kwd>
<kwd lng="pt"><![CDATA[produtividade]]></kwd>
<kwd lng="es"><![CDATA[Calidad del suelo]]></kwd>
<kwd lng="es"><![CDATA[Oligochaeta]]></kwd>
<kwd lng="es"><![CDATA[manejo sostenible]]></kwd>
<kwd lng="es"><![CDATA[biodiversidad]]></kwd>
<kwd lng="es"><![CDATA[perturbación]]></kwd>
<kwd lng="es"><![CDATA[productividad]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Art&iacute;culos originales</font></p>     <p align="justify"><font face="verdana" size="4">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Uso das minhocas como bioindicadoras ambientais: princ&iacute;pios e pr&aacute;ticas &#150; o 3&deg; Encontro Latino Americano de Ecologia e Taxonomia de Oligoquetas (ELAETAO3)</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="3"><b>Uso de las lombrices de tierra como bioindicadoras ambientales: principios y pr&aacute;cticas &#150; el 3&deg; Encuentro Latino Americano de Ecolog&iacute;a y Taxonom&iacute;a de Oligoquetos (ELAETAO3)</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>George G. BROWN<sup>1</sup> &amp; Jorge DOM&Iacute;NGUEZ<sup>2</sup></b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>1 </sup>Embrapa Florestas, Estrada da Ribeira km. 111, C.P. 319, Colombo, PR, 83411&#150;000, Brasil. E&#150;mail:</i> <a href="mailto:browng@cnpf.embrapa.br">browng@cnpf.embrapa.br</a> </font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>2</sup> Departamento de Ecolox&iacute;a e Biolox&iacute;a Animal, Universidade de Vigo, Vigo E&#150;36310, Espa&ntilde;a. E&#150;mail: </i><a href="mailto:jdguez@uvigo.es">jdguez@uvigo.es</a></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido: 16/05/2008.    <br> Aceptado: 08/01/2010.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>RESUMO</b></font></p>     <p align="justify"><font face="verdana" size="2">Dentre os animais que vivem no solo, as minhocas figuram como um dos mais importantes, por serem engenheiras do ecossistema e realizarem v&aacute;rios servi&ccedil;os ambientais, incluindo o controle biol&oacute;gico, a decomposi&ccedil;&atilde;o da mat&eacute;ria org&acirc;nica, a ciclagem de nutrientes, a forma&ccedil;&atilde;o e a agrega&ccedil;&atilde;o do solo, fatores estes que afetam geralmente de forma positiva o crescimento das plantas. Al&eacute;m disso, as minhocas tamb&eacute;m s&atilde;o muito &uacute;teis como bioindicadores da qualidade ambiental, estando relacionadas &agrave;s condi&ccedil;&otilde;es ambientais como a fertilidade do solo e sendo suscept&iacute;veis &agrave; perturba&ccedil;&atilde;o e contamina&ccedil;&atilde;o do h&aacute;bitat. No entanto, seu uso como indicadoras ambientais tem sido reduzido, e a pesquisa sobre a ecologia desses animais e sua import&acirc;ncia para os ecossistemas latino&#150;americanos ainda &eacute; incipiente. Apesar de j&aacute; existir um conhecimento razo&aacute;vel sobre algumas das esp&eacute;cies mais comuns, o conhecimento da biologia b&aacute;sica e ecologia geral da maioria das mais de 960 esp&eacute;cies de minhocas latino&#150;americanas, a maioria delas nativas e end&ecirc;micas, continua &iacute;nfimo. No 3&deg; Encontro Latino Americano de Ecologia e Taxonomia de Oligoquetas (ELAETAO3), realizado em Curitiba, em dezembro de 2007, discutiram&#150;se diversos temas relacionados aos princ&iacute;pios e pr&aacute;ticas e limita&ccedil;&otilde;es do uso das minhocas como bioindicadoras ambientais. Os trabalhos publicados nesse n&uacute;mero especial abordam diversos temas relacionados ao uso das minhocas como bioindicadoras de perturba&ccedil;&atilde;o ou de condi&ccedil;&otilde;es ambientais em ecossistemas naturais; da fertilidade e potencial produtivo do solo; da contamina&ccedil;&atilde;o do solo; do manejo de ecossistemas; e m&eacute;todos de coleta e estudos quantitativos (incluindo a gen&eacute;tica molecular) para avalia&ccedil;&atilde;o do potencial como indicadoras. Outros trabalhos abordaram temas mais gerais, como a biodiversidade de oligoquetas na Am&eacute;rica do Sul, o conhecimento tradicional sobre minhocas e sua import&acirc;ncia na com&#150;postagem de res&iacute;duos org&acirc;nicos, incluindo a biologia das esp&eacute;cies envolvidas e o uso do h&uacute;mus como biofertilizante. Esperamos, portanto, que esse n&uacute;mero especial contribua, para o melhor conhecimento do potencial das minhocas como indicadoras ambientais na Am&eacute;rica Latina.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Palavras&#150;chave: </b>Qualidade do solo, Oligochaeta, manejo sustent&aacute;vel, biodiversidade, perturba&ccedil;&atilde;o, produtividade.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>RESUMEN</b></font></p>     <p align="justify"><font face="verdana" size="2">Entre los animales que viven en el suelo, las lombrices de tierra figuran como uno de los m&aacute;s importantes, pues son ingenieras del ecosistema y realizan varios servicios ambientales, incluyendo el control biol&oacute;gico, la descomposici&oacute;n de la materia org&aacute;nica, el ciclado de nutrientes, la formaci&oacute;n y la agregaci&oacute;n del suelo, factores &eacute;stos que afectan generalmente de forma positiva el crecimiento de las plantas. Las lombrices tambi&eacute;n son muy &uacute;tiles como bioindicadoras de la calidad ambiental, estando relacionadas con las condiciones ambientales como la fertilidad del suelo y son susceptibles a la perturbaci&oacute;n y contaminaci&oacute;n del h&aacute;bitat. Sin embargo, su uso como indicadoras ambientales ha sido reducido y la investigaci&oacute;n sobre la ecolog&iacute;a de estos animales y su importancia para los ecosistemas latino&#150;americanos a&uacute;n es incipiente. A pesar del conocimiento razonable sobre algunas de las especies m&aacute;s comunes, se sabe muy poco sobre la biolog&iacute;a b&aacute;sica y ecolog&iacute;a general de la mayor parte de las m&aacute;s de 960 especies de lombrices latino&#150;americanas, la mayor&iacute;a de ellas nativas y end&eacute;micas. En el 3er Encuentro Latino Americano de Ecolog&iacute;a y Taxonom&iacute;a de Oligoquetas (ELAETAO3), realizado en Curitiba, en diciembre del 2007, se discutieron diversos temas relacionados con los principios y pr&aacute;cticas y limitaciones del uso de las lombrices como bioindicadoras ambientales. Los trabajos publicados en este n&uacute;mero especial abordan diversos temas relacionados con el uso de las lombrices como bioindicadoras de perturbaci&oacute;n o de condiciones ambientales en ecosistemas naturales; de la fertilidad y potencial productivo del suelo; de la contaminaci&oacute;n del suelo; del manejo de ecosistemas; y m&eacute;todos de colecta y estudios cuantitativos (incluyendo la gen&eacute;tica molecular) para evaluar el potencial como indicadoras. Otros trabajos abordaron temas m&aacute;s generales, como la biodiversidad de lombrices en Am&eacute;rica Latina, el conocimiento tradicional sobre lombrices y su importancia en el compostaje de residuos org&aacute;nicos, incluyendo la biolog&iacute;a de las especies involucradas y el uso de los excrementos como biofertilizantes. Esperamos, por lo tanto, que este n&uacute;mero especial contribuya para el mejor conocimiento del potencial de las lombrices como indicadoras ambientales en Latinoam&eacute;rica.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Palabras clave: </b>Calidad del suelo, Oligochaeta, manejo sostenible, biodiversidad, perturbaci&oacute;n, productividad.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>INTRODU&Ccedil;&Atilde;O</b></font></p>     <p align="justify"><font face="verdana" size="2">A fertilidade do solo &eacute; a base da produtividade e da viabilidade dos ecossistemas terrestres. Essa fertilidade s&oacute; pode ser mantida ou melhorada se a qualidade do solo for garantida (Doran &amp; Zeiss 2000). A qualidade do solo &eacute; um conceito abrangente, envolvendo todos os seus componentes f&iacute;sicos, qu&iacute;micos e biol&oacute;gicos, e pode ser definida como a capacidade do solo de funcionar, dentro de seus limites ambientais, como sustento para a produtividade biol&oacute;gica, para a manuten&ccedil;&atilde;o da qualidade ambiental e promo&ccedil;&atilde;o da sa&uacute;de animal e vegetal (Doran &amp; Parkin 1994).</font></p>     <p align="justify"><font face="verdana" size="2">Como raramente &eacute; poss&iacute;vel analisar todas as caracter&iacute;sticas e os processos f&iacute;sicos, qu&iacute;micos e biol&oacute;gicos do solo para avaliar sua qualidade, principalmente devido a limita&ccedil;&otilde;es de tempo e custo, tem&#150;se buscado encontrar par&acirc;metros que possam ser avaliados como indicadores da qualidade geral do solo e do ambiente, reduzindo, assim, a lista de par&acirc;metros a ser avaliados. Os par&acirc;metros biol&oacute;gicos tendem a ser mais sens&iacute;veis e reacionar mais rapidamente que os par&acirc;metros f&iacute;sicos e qu&iacute;micos, e por isso tem sido usados frequentemente para indicar a qualidade do solo (Brussaard <i>et al. </i>2007). Entre esses par&acirc;metros est&aacute; a popula&ccedil;&atilde;o de minhocas, organismos que possuem um apelo especial aos agricultores, por serem f&aacute;ceis de visualizar e coletar.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>MINHOCAS COMO AGENTES E REAGENTES DE TRANSFORMA&Ccedil;&Atilde;O </b><b>AMBIENTAL</b></font></p>     <p align="justify"><font face="verdana" size="2">A diversidade e abund&acirc;ncia das popula&ccedil;&otilde;es de minhocas presentes em um local particular s&atilde;o determinadas e controladas por uma s&eacute;rie de fatores (determinantes) hier&aacute;rquicos, operando em diferentes escalas do tempo e do espa&ccedil;o (Lavelle 1996, Brown <i>et al. </i>2006b; Fig. 1). No topo da hierarquia, o clima determina os regimes h&iacute;dricos e de temperatura que, por sua vez, moldam o tipo da vegeta&ccedil;&atilde;o e solos na regi&atilde;o, que determinam a natureza e abund&acirc;ncia de minerais de argila e a fertilidade do solo (tamb&eacute;m determinada pelo tipo de rocha m&atilde;e). Nesse n&iacute;vel, a variabilidade da paisagem, topografia, e o "pool" (a diversidade) de esp&eacute;cies na vegeta&ccedil;&atilde;o tamb&eacute;m s&atilde;o importantes. Super&#150;imposto sobre esse "background" est&atilde;o as escolhas realizadas pelas comunidades locais, que determinam o tipo de uso do solo e as pr&aacute;ticas de manejo associadas (<a href="/img/revistas/azm/v26nspe2/a1f1.jpg" target="_blank">Fig. 1</a> e <a href="#f2">2</a>).</font></p>     <p align="center"><font face="verdana" size="2"><a name="f2" id="f2"></a></font></p>     <p align="center"><font face="verdana" size="2"><img src="/img/revistas/azm/v26nspe2/a1f2.jpg"></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Portanto, pode&#150;se dizer que a comunidade de minhocas presente em um dado lugar &eacute; uma fun&ccedil;&atilde;o das condi&ccedil;&otilde;es ed&aacute;ficas (tipo de solo, minerais predominantes, temperatura, pH, conte&uacute;do de mat&eacute;ria org&acirc;nica (MO), umidade, textura e estrutura), vegetais (tipo de vegeta&ccedil;&atilde;o e cobertura), hist&oacute;ricas (especialmente humana, mas tamb&eacute;m geol&oacute;gica), topogr&aacute;ficas (posi&ccedil;&atilde;o fisiogr&aacute;fica, inclina&ccedil;&atilde;o) e clim&aacute;ticas (precipita&ccedil;&atilde;o, temperatura, vento, umidade relativa do ar) do local (Reynolds &amp; Jordan 1975, Lavelle 1996) do local (<a href="/img/revistas/azm/v26nspe2/a1f1.jpg" target="_blank">Fig. 1</a>).</font></p>     <p align="justify"><font face="verdana" size="2">Essas condi&ccedil;&otilde;es, al&eacute;m de diversas barreiras geogr&aacute;ficas (cursos de &aacute;gua doce e salgada, montanhas, desertos, geleiras ou regi&otilde;es geladas/pedregosas) e clim&aacute;ticas presentes e passadas (Reynolds 1994), podem gerar uma forte press&atilde;o de especia&ccedil;&atilde;o e endemismo nas minhocas. Portanto, as popula&ccedil;&otilde;es de minhocas podem servir como indicadores da cobertura vegetal, do uso, do manejo e da qualidade do solo e seu potencial produtivo (Paoletti 1999, Doube &amp; Schmidt 1997), algo que os agricultores normalmente reconhecem (Lima &amp; Brussaard, este n&uacute;mero).</font></p>     <p align="justify"><font face="verdana" size="2">As minhocas s&atilde;o sens&iacute;veis e reagem a mudan&ccedil;as induzidas por atividades antr&oacute;&#150;picas e naturais ao solo e sua cobertura vegetal (<a href="#f2">Fig. 2</a>). Portanto, elas podem dar no&ccedil;&otilde;es do estado atual dos ecossistemas e de mudan&ccedil;as induzidas aos mesmos, por for&ccedil;as internas e externas (bi&oacute;ticas e abi&oacute;ticas) atrav&eacute;s do tempo. Essas caracter&iacute;sticas s&atilde;o &uacute;teis para programas de avalia&ccedil;&atilde;o e monitoramento da qualidade ambiental. Na Holanda, por exemplo, as minhocas fazem parte de um programa nacional de avalia&ccedil;&atilde;o e monitoramento da qualidade do solo e da sustentabilidade de agroe&#150;cossistemas (com amostragem em dezenas de fazendas em n&iacute;vel nacional, a cada 4 anos), junto com diversos outros par&acirc;metros f&iacute;sicos, qu&iacute;micos e biol&oacute;gicos (Rutgers <i>et al. </i>2009).</font></p>     <p align="justify"><font face="verdana" size="2">Por&eacute;m, al&eacute;m de reagentes a mudan&ccedil;as, as minhocas tamb&eacute;m s&atilde;o agentes transformadores do solo mudando suas caracter&iacute;sticas f&iacute;sicas, qu&iacute;micas e biol&oacute;gicas atrav&eacute;s da constru&ccedil;&atilde;o de galerias (t&uacute;neis) no solo e a deposi&ccedil;&atilde;o de copr&oacute;litos na superf&iacute;cie e na matriz ed&aacute;fica (Lavelle 1988). A drilosfera, resultado da a&ccedil;&atilde;o das minhocas no solo pode ocupar uma propor&ccedil;&atilde;o importante do volume do solo (Brown <i>et al. </i>2000), e resultar numa transforma&ccedil;&atilde;o profunda de seu funcionamento. Lavelle <i>et al. </i>(1997) chamam esse processo de "engenharia do ecossistema".</font></p>     <p align="justify"><font face="verdana" size="2">Portanto, considerando que as minhocas n&atilde;o somente agem sobre seu ambiente, mas tamb&eacute;m reagem a, ou s&atilde;o sens&iacute;veis &agrave;s suas caracter&iacute;sticas, e &agrave;s transforma&ccedil;&otilde;es nas mesmas, elas podem ser &uacute;teis para indicar tanto o "status&#150;quo", quanto as tend&ecirc;ncias de mudan&ccedil;as no seu ambiente. A aplica&ccedil;&atilde;o desses conceitos inclui o uso das minhocas como indicadoras de perturba&ccedil;&atilde;o ambiental, da qualidade, contamina&ccedil;&atilde;o, e potencial produtivo do solo, da biodiversidade de outros grupos de animais e microorganismos ed&aacute;ficos, e da sustentabilidade de diferentes pr&aacute;ticas de manejo em ecossistemas agr&iacute;colas e florestais. A seguir, providenciamos alguns detalhes sobre cada um desses temas.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>MINHOCAS COMO INDICADORAS DA QUALIDADE E POTENCIAL </b><b>PRODUTIVO DO SOLO</b></font></p>     <p align="justify"><font face="verdana" size="2">As minhocas est&atilde;o entre os organismos ed&aacute;ficos mais importantes para v&aacute;rios processos considerados cr&iacute;ticos para a manuten&ccedil;&atilde;o da fertilidade e qualidade dos solos de agroecossistemas e ecossistemas naturais (Lavelle <i>et al. </i>2001). Dentre esses processos est&atilde;o a agrega&ccedil;&atilde;o do solo e a decomposi&ccedil;&atilde;o da MO do solo e res&iacute;duos vegetais, incluindo a liteira superficial (Lavelle 1988). As minhocas formam estruturas bio&#150;g&ecirc;nicas (copr&oacute;litos) constitu&iacute;das de agregados altamente est&aacute;veis que garantem boa porosidade ao solo e, geralmente, resist&ecirc;ncia &agrave; degrada&ccedil;&atilde;o, seja eros&atilde;o h&iacute;drica, e&oacute;lica ou mec&acirc;nica (Blanchart <i>et al. </i>2004). Por consumirem MO em diferentes est&aacute;gios de decomposi&ccedil;&atilde;o, as minhocas tamb&eacute;m alteram de forma importante sua din&acirc;mica de decomposi&ccedil;&atilde;o e mineraliza&ccedil;&atilde;o (Lavelle 1997, Hern&aacute;ndez <i>et al. </i>e Bartz <i>et al., </i>este n&uacute;mero).</font></p>     <p align="justify"><font face="verdana" size="2">No curto prazo, as minhocas ep&iacute;geas (que vivem na liteira e consomem MO mais fresca) e an&eacute;cicas (que vivem no solo, mas consomem uma mistura de serapilheira e MO do solo) facilitam a decomposi&ccedil;&atilde;o da MO por fragmentar as part&iacute;culas maiores e aumentar seu contato com o solo e a atividade de outros organismos (especialmente microorganismos) (Brown 1995). A a&ccedil;&atilde;o das esp&eacute;cies ep&iacute;geas <i>Eudrilus eugeniae </i>(Kinberg, 1867), <i>Eisenia andrei </i>Bouch&eacute;, 1972 e <i>Eisenia fetida </i>(Savigny, 1926) sobre a decomposi&ccedil;&atilde;o de res&iacute;duos org&acirc;nicos (de origem animal e vegetal) se conhece razoavelmente bem (Dom&iacute;nguez &amp; G&oacute;mez&#150;Brand&oacute;n, este n&uacute;mero), e essas esp&eacute;cies s&atilde;o usadas amplamente para a minhocultura na Am&eacute;rica Latina. Os copr&oacute;litos dessas esp&eacute;cies (vulgarmente chamado de "h&uacute;mus de minhoca") t&ecirc;m sido amplamente usados em jardins e hortas, e tamb&eacute;m podem ser usadas como adubo org&acirc;nico bio&#150;estimulante em culturas agr&iacute;colas ou ornamentais de alto valor (Dom&iacute;nguez <i>et al. </i>e Steffen <i>et al., </i>este n&uacute;mero).</font></p>     <p align="justify"><font face="verdana" size="2">O efeito das esp&eacute;cies end&oacute;geas (que vivem no solo e consomem MO do solo) na din&acirc;mica da Mo continua sendo debatido, pois parece depender do tipo e da din&acirc;mica dos copr&oacute;litos (agregados) produzidos (Six <i>et al. </i>2004). Nos copr&oacute;litos, a a&ccedil;&atilde;o mine&#150;ralizadora iniciada no intestino pode continuar por um curto per&iacute;odo, mas com a estabiliza&ccedil;&atilde;o e secagem, a atividade qu&iacute;mica e biol&oacute;gica tende a diminuir (Lavelle 1997). Em longo prazo, a a&ccedil;&atilde;o das minhocas (especialmente end&oacute;geas) pode at&eacute; contribuir para a conserva&ccedil;&atilde;o da MO em copr&oacute;litos compactados, onde a atividade microbiana &eacute; restrita (Martin 1991).</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">U das poucas esp&eacute;cies end&oacute;geas latino&#150;americanas para a qual se conhecem razoavelmente bem os efeitos em diversos par&acirc;metros e processos ed&aacute;ficos, &eacute; a esp&eacute;cie nativa <i>Pontoscolex corethrurus </i>(M&uuml;ller, 1857) (Lavelle <i>et al. </i>1987, Brown &amp; James 2007, Hern&aacute;ndez <i>et al. </i>e Bartz <i>et al., </i>este n&uacute;mero). Para prever adequadamente o efeito e a import&acirc;ncia relativa de diversas esp&eacute;cies de minhocas (nativas e/ou introduzidas) na decomposi&ccedil;&atilde;o e/ou estabiliza&ccedil;&atilde;o da MO, &eacute; necess&aacute;rio estudar as comunidades e atividade das minhocas no campo, em diferentes ecossistemas agr&iacute;colas, florestais e naturais, e cultivar essas esp&eacute;cies em condi&ccedil;&otilde;es controladas, analisando os copr&oacute;litos produzidos. Para tal finalidade diversas t&eacute;cnicas espectrosc&oacute;picas e morfol&oacute;gicas parecem ser especialmente &uacute;teis (Vel&aacute;zquez <i>et al. </i>2007, Millori <i>et al. </i>2006).</font></p>     <p align="justify"><font face="verdana" size="2">De modo geral, os agricultores consideram as minhocas (mesmo esp&eacute;cies ex&oacute;ticas ou peregrinas) como organismos ben&eacute;ficos e importantes para a manuten&ccedil;&atilde;o da fertilidade do solo (Lima &amp; Brussaard, este n&uacute;mero). Muitos relacionam altas popula&ccedil;&otilde;es de minhocas com "terra boa". At&eacute; o nome do "Clube da Minhoca," (usado pela associa&ccedil;&atilde;o de produtores de Plantio Direto&#150;PD) na regi&atilde;o dos Campos Gerais do Paran&aacute;, foi inspirado neste fato (Brown <i>et al. </i>2003). O aumento nas popula&ccedil;&otilde;es e atividade das minhocas &eacute; geralmente associado a melhoras na fertilidade do solo, na produ&ccedil;&atilde;o de gr&atilde;os e na sustentabilidade agr&iacute;cola (Peixoto &amp; Marochi 1996), a pesar de existirem poucos dados que comprovem este fen&ocirc;meno em n&iacute;vel de campo.</font></p>     <p align="justify"><font face="verdana" size="2">A atividade das minhocas afeta direta ou indiretamente o crescimento vegetal (Brown <i>et al. </i>2004), mas apenas algumas esp&eacute;cies de minhocas e plantas t&ecirc;m sido avaliadas at&eacute; o momento, e pouqu&iacute;ssimos estudos foram realizados na Am&eacute;rica Latina (Brown <i>et al. </i>1999, Scheu 2003, Huerta <i>et al., </i>Brown <i>et al. </i>e Avila <i>et al., </i>este n&uacute;mero). Geralmente, o efeito das minhocas &eacute; positivo, aumentando a produtividade das plantas (Brown <i>et al. </i>1999, Scheu 2003), via altera&ccedil;&otilde;es nas propriedades f&iacute;sico&#150;qu&iacute;micas do solo, no crescimento das ra&iacute;zes (Brown <i>et al., </i>este n&uacute;mero), na atividade e popula&ccedil;&otilde;es de fito&#150;parasitas, microorganismos patog&ecirc;nicos e ben&eacute;ficos, na produ&ccedil;&atilde;o de fito&#150;horm&ocirc;nios, e na germina&ccedil;&atilde;o e distribui&ccedil;&atilde;o de sementes (Brown <i>et al. </i>2004, Dom&iacute;nguez <i>et al., </i>este n&uacute;mero).</font></p>     <p align="justify"><font face="verdana" size="2">Portanto, na maioria dos casos, pode ser interessante buscar aumentar suas popula&ccedil;&otilde;es, em prol da fertilidade do solo e sustentabilidade agr&iacute;cola e ambiental. Por&eacute;m, ainda s&atilde;o necess&aacute;rios mais dados de coleta e correla&ccedil;&otilde;es das propriedades biol&oacute;gicas com os demais par&acirc;metros f&iacute;sico&#150;qu&iacute;micos importantes na descri&ccedil;&atilde;o e identifica&ccedil;&atilde;o de solos f&eacute;rteis e altamente produtivos. Para melhor aproveitar os benef&iacute;cios gerados pelas minhocas &agrave; produtividade agr&iacute;cola e florestal, &eacute; preciso tamb&eacute;m conhecer os fatores (e combina&ccedil;&otilde;es dos mesmos) que promovem suas popula&ccedil;&otilde;es, atividade e efeitos positivos ao solo. Por&eacute;m, apenas alguns trabalhos cient&iacute;ficos nesse sentido foram realizados, at&eacute; o momento, na Am&eacute;rica Latina (Brown &amp; Fragoso 2007).</font></p>     <p align="justify"><font face="verdana" size="2">Apesar dos efeitos ben&eacute;ficos das minhocas sobre as plantas serem predominantes (Brown <i>et al. </i>1999), h&aacute; casos em que as minhocas podem se comportar como pragas, causando danos &agrave;s lavouras. Esse fen&ocirc;meno tem sido observado especialmente em cultivos de arroz nas Filipinas, na Austr&aacute;lia (Barrion &amp; Litsinger 1997, Kale <i>et al. </i>1989, Stevens &amp; Warren 2000, Simpson <i>et al. </i>1993ab) e, empiricamente, no Brasil (Barrigossi <i>et al. </i>2009). O dano est&aacute; normalmente associado a altas popula&ccedil;&otilde;es de minhocas em arroz irrigado, cuja atividade de bioturba&ccedil;&atilde;o do solo enfraquece o sistema radicular, causando tombamento das plantas e dificultando a colheita. Diversos relatos de agricultores e t&eacute;cnicos confirmaram que esse fen&ocirc;meno vem ocorrendo em alguns locais no Mato Grosso, Mato Grosso do Sul e no Rio Grande do Sul, onde pesticidas (carbamatos) est&atilde;o sendo usados para elimin&aacute;&#150;las das lavouras (Bartz <i>et al. </i>2009). Segundo os produtores, a redu&ccedil;&atilde;o da produ&ccedil;&atilde;o de gr&atilde;os em campos com altas popula&ccedil;&otilde;es de minhocas pode chegar a 15%, comparada a de campos com baixas popula&ccedil;&otilde;es (J.A. Barrigossi, comunica&ccedil;&atilde;o pessoal). Suspeita&#150;se que as pr&aacute;ticas de manejo estejam causando uma explos&atilde;o demogr&aacute;fica das minhocas e, consequentemente, esses efeitos negativos, mas o fen&ocirc;meno ainda n&atilde;o foi bem estudado e existe controv&eacute;rsia na literatura sobre o assunto em n&iacute;vel internacional. Alguns autores afirmam que as minhocas n&atilde;o causam danos, enquanto outros afirmam que sim. Claramente, estes fen&ocirc;menos devem ser mais bem pesquisados para comprovar as esp&eacute;cies envolvidas, suas popula&ccedil;&otilde;es, os danos causados e os poss&iacute;veis m&eacute;todos de controle a ser em efetuados (com o m&iacute;nimo de impacto ambiental negativo).</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>MINHOCAS COMO INDICADORAS DE CONTAMINA&Ccedil;&Atilde;O AMBIENTAL</b></font></p>     <p align="justify"><font face="verdana" size="2">O uso de insumos externos &eacute; essencial para manter a alta produtividade e fertilidade dos solos cultivados intensamente. Contudo, o uso indiscriminado desses insumos (especialmente pesticidas) pode afetar negativamente a biota do solo, incluindo as minhocas (Edwards &amp; Bohlen 1996). Alguns produtos possuem efeitos diretos, enquanto outros causam altera&ccedil;&otilde;es mais sutis, indiretas, nas popula&ccedil;&otilde;es de minhocas. Algumas minhocas podem evitar &aacute;reas contaminadas por subst&acirc;ncias xenobi&oacute;ticas tais como pesticidas, metais pesados e hidrocarbonetos de petr&oacute;leo (Loureiro <i>et al. </i>2005, R&ouml;mbke 1996), o que, evidentemente, impede sua a&ccedil;&atilde;o ben&eacute;fica no solo, refletindo no funcionamento de todo o ecossistema.</font></p>     <p align="justify"><font face="verdana" size="2">Atualmente, a avalia&ccedil;&atilde;o do potencial toxicol&oacute;gico de subst&acirc;ncias qu&iacute;micas para o solo tem sido feita usando testes de toxicidade aguda e de reprodu&ccedil;&atilde;o (efeito cr&ocirc;nico) (OECD 1984, ISO 11268&#150;1 1993, ISO 11268&#150;2 1998). Testes de repel&ecirc;ncia ou fuga, baseados na resposta comportamental das minhocas, t&ecirc;m sido propostos como uma alternativa para a r&aacute;pida avalia&ccedil;&atilde;o de solos contaminados, inclusive em baixas concentra&ccedil;&otilde;es do produto (Yeardley <i>et al. </i>1996, Slimak 1997, Hund&#150;Rinke &amp; Wiechering 2001). Ambos os testes s&atilde;o &uacute;teis para avaliar os efeitos e poss&iacute;veis riscos da contamina&ccedil;&atilde;o de solos, mas normalmente envolvem solo artificial e condi&ccedil;&otilde;es que n&atilde;o refletem adequadamente a realidade do produto quando aplicado no campo. Al&eacute;m disso, foram desenvolvidos para a esp&eacute;cie&#150;teste padr&atilde;o <i>E. fetida, </i>que vive em h&aacute;bitats ricos em MO como res&iacute;duos org&acirc;nicos de origem animal ou vegetal, e n&atilde;o sobrevive em solos tropicais, como as esp&eacute;cies end&oacute;geas nativas. Contudo, muitos estudos latino&#150;americanos foram realizados com outra esp&eacute;cie, <i>E. andrei, </i>e erroneamente atribu&iacute;dos &agrave; esp&eacute;cie <i>E. fetida, </i>por serem esp&eacute;cies bastante similares externamente (Andrea e Dom&iacute;nguez <i>et al., </i>este n&uacute;mero).</font></p>     <p align="justify"><font face="verdana" size="2">Embora <i>E. fetida </i>e <i>E. andrei </i>possam ser consideradas menos relevantes para estudos toxicol&oacute;gicos, por n&atilde;o representarem a fauna de minhocas de solos tropicais, estas t&ecirc;m sido amplamente utilizadas, j&aacute; que ainda n&atilde;o foi encontrada uma esp&eacute;cie tropical adequada para testes toxicol&oacute;gicos em laborat&oacute;rio (Andr&eacute;a, este n&uacute;mero). Para tal finalidade, &eacute; necess&aacute;rio encontrar e criar em cativeiro esp&eacute;cies nativas (por exemplo, <i>P. corethrurus) </i>ou ex&oacute;ticas (por exemplo, <i>Dichogaster </i>ou <i>Amynthas </i>spp.) comumente encontradas em solos manejados (agr&iacute;colas e florestais), e reproduzir condi&ccedil;&otilde;es de solo mais semelhantes &agrave; realidade do campo nas regi&otilde;es neotropicais. Avalia&ccedil;&otilde;es preliminares usando a esp&eacute;cie nativa <i>P. corethrurus </i>e solos tropicais t&ecirc;m sido realizadas com &ecirc;xito, e demonstram potencial para aplica&ccedil;&atilde;o mais ampla (Garcia 2004). Esses testes precisam ser mais bem desenvolvidos e padronizados para garantir uma maior relev&acirc;ncia ecol&oacute;gica e agron&ocirc;mica dos estudos ecotoxicol&oacute;gicos.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>MINHOCAS COMO INDICADORAS DA BIODIVERSIDADE DO SOLO</b></font></p>     <p align="justify"><font face="verdana" size="2">Sendo engenheiras do ecossistema, as minhocas alteram o solo como um h&aacute;bitat f&iacute;sico para os demais organismos ed&aacute;ficos (Lavelle <i>et al. </i>1997). Sua atividade pode levar ao aumento ou diminui&ccedil;&atilde;o na popula&ccedil;&atilde;o de diversos organismos no solo, incluindo representantes da macro, meso e micro&#150;fauna. Especificamente, t&ecirc;m&#150;se observados efeitos da atividade das minhocas na diversidade, abund&acirc;ncia e atividade de diversos fungos (incluindo micorrizas), bact&eacute;rias, protozo&aacute;rios, nemat&oacute;ides (de vida livre e fitoparas&iacute;ticos), enquitre&iacute;deos, col&ecirc;mbolos, &aacute;caros, milip&eacute;ias, tatuzinhos e outros animais (Brown 1995, Brown &amp; Doube 2004, Edwards &amp; Aranc&oacute;n 2005). Mas o efeito final das minhocas sobre a comunidade ed&aacute;fica e sua biodiversidade varia conforme a composi&ccedil;&atilde;o espec&iacute;fica da comunidade de minhocas, sua abund&acirc;ncia num determinado solo, a composi&ccedil;&atilde;o do ambiente (tipo de solo e vegeta&ccedil;&atilde;o) e as intera&ccedil;&otilde;es com outros organismos habitando o solo no local (Brown <i>et al. </i>2000). Os organismos mais suscept&iacute;veis &agrave; competi&ccedil;&atilde;o por recursos ou &agrave;queles incapazes de se adaptar &agrave; drilosfera criada pelas minhocas podem sofrer uma diminui&ccedil;&atilde;o de suas popula&ccedil;&otilde;es e/ou atividade. J&aacute; aqueles capazes de competir ou de utilizar as estruturas e recursos disponibilizados ou alterados pelas minhocas, podem se manter ou at&eacute; aumentar em abund&acirc;ncia.</font></p>     <p align="justify"><font face="verdana" size="2">Contudo, existem pouqu&iacute;ssimos dados sobre as caracter&iacute;sticas da drilosfera produzidas pelas esp&eacute;cies mais comuns em agroecossistemas (Fragoso <i>et al. </i>1999a), e pelas centenas de esp&eacute;cies presentes na vegeta&ccedil;&atilde;o nativa nos diversos biomas latinoamericanos (Fragoso &amp; Brown 2007). Al&eacute;m disso, a comunidade ed&aacute;fica tem sido avaliada geralmente de forma restrita (Moreira <i>et al., </i>2006, Aquino <i>et al. </i>2008), e maiores estudos s&atilde;o necess&aacute;rios sobre a biodiversidade do solo em geral e sobre os poss&iacute;veis impactos da engenharia do ecossistema induzida por comunidades de minhocas (especialmente esp&eacute;cies nativas) sobre o solo e sua comunidade/diversidade.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>MINHOCAS COMO INDICADORAS DE PERTURBA&Ccedil;&Atilde;O AMBIENTAL</b></font></p>     <p align="justify"><font face="verdana" size="2">Devido &agrave; alta correla&ccedil;&atilde;o de algumas esp&eacute;cies de minhocas com certas propriedades ambientais (tipo de solo, vegeta&ccedil;&atilde;o, etc.), sua baixa capacidade de dispers&atilde;o e grande susceptibilidade a mudan&ccedil;as no tipo de vegeta&ccedil;&atilde;o, &agrave; contamina&ccedil;&atilde;o, &agrave; perturba&ccedil;&atilde;o do solo, e a outras mudan&ccedil;as f&iacute;sicas, qu&iacute;micas ou biol&oacute;gicas nos ecossistemas, as minhocas podem ser usadas como indicadores de perturba&ccedil;&otilde;es ambientais antr&oacute;picas e naturais (Paoletti 1999). Por exemplo, no Brasil, das 260 esp&eacute;cies nativas conhecidas, 80% est&atilde;o associadas &agrave; h&aacute;bitats particulares, t&ecirc;m distribui&ccedil;&atilde;o restrita (encontrada em apenas um ou dois locais) e poderiam ser consideradas end&ecirc;micas (Brown &amp; James 2007). V&aacute;rias dessas esp&eacute;cies poderiam servir como indicadores de paleo&#150;ambientes e de vegeta&ccedil;&atilde;o prim&aacute;ria ou em bom estado de preserva&ccedil;&atilde;o.</font></p>     <p align="justify"><font face="verdana" size="2">Por&eacute;m, at&eacute; o momento, as minhocas n&atilde;o t&ecirc;m sido usadas para esse fim, principalmente pela falta de conhecimento das esp&eacute;cies nativas e sua distribui&ccedil;&atilde;o nos pa&iacute;ses Latino&#150;Americanos, pela falta de pessoal qualificado para realizar tais estudos (existem poucos pesquisadores e taxonomistas de minhocas na Am&eacute;rica Latina), e pela pouca intera&ccedil;&atilde;o entre pesquisadores de minhocas e bi&oacute;logos da conserva&ccedil;&atilde;o.</font></p>     <p align="justify"><font face="verdana" size="2">Uma exce&ccedil;&atilde;o fortuita ocorreu numa viagem realizada em fevereiro de 2006, quando os pesquisadores James &amp; Brown (este n&uacute;mero) encontraram, em um fragmento de Mata Atl&acirc;ntica do Parque Estadual do Itacolomi (Ouro Preto, Brasil), uma esp&eacute;cie de minhoca <i>(Fimoscolex sporadochaetus </i>Michaelsen, 1918) que havia sido declarada extinta (Machado <i>et al. </i>2005). Felizmente, os pesquisadores tamb&eacute;m conheceram nessa viagem, uma pesquisadora envolvida na elabora&ccedil;&atilde;o do plano de manejo do parque. Assim, o local onde essa minhoca foi encontrada, e seu entorno, foi usado no plano de manejo, visando melhor preserva&ccedil;&atilde;o da esp&eacute;cie e seu h&aacute;bitat e, conseq&uuml;entemente, de outros animais, plantas e microorganismos que habitam o local. Esse tipo de informa&ccedil;&atilde;o &eacute; importante e deveria ser gerado e utilizado em outros casos onde ocorrem alto endemismo e esp&eacute;cies que poderiam estar amea&ccedil;adas.</font></p>     <p align="justify"><font face="verdana" size="2">Muitas esp&eacute;cies ex&oacute;ticas (oriundas de outros pa&iacute;ses e n&atilde;o nativas ao pa&iacute;s) de minhocas s&atilde;o amplamente distribu&iacute;das no Brasil (Brown <i>et al. </i>2006a) e na Am&eacute;rica Latina (Fragoso &amp; Brown 2007), e estas quase sempre est&atilde;o associadas a ambientes antropog&ecirc;nicos, e a atividades humanas de dispers&atilde;o (Righi 1997). Por serem esp&eacute;cies adaptadas a essas &aacute;reas, elas s&atilde;o &uacute;teis indicadoras de ecossistemas perturbados. Algumas esp&eacute;cies ex&oacute;ticas s&atilde;o f&aacute;ceis de coletar e identificar sendo, portanto, &uacute;teis para avaliar a integridade de ecossistemas e o hist&oacute;rico de perturba&ccedil;&atilde;o (Fernandes <i>et al.</i>, este n&uacute;mero), dados essenciais para conhecer a biodiversidade de um ecossistema, determinar a necessidade de sua preserva&ccedil;&atilde;o, e elaborar um plano de manejo. Esses dados seriam tamb&eacute;m &uacute;teis na escolha de novas &aacute;reas para unidades de conserva&ccedil;&atilde;o, e para determinar &aacute;reas melhor preservadas que precisam maiores esfor&ccedil;os de conserva&ccedil;&atilde;o.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Al&eacute;m disso, a atividade de esp&eacute;cies ex&oacute;ticas pode ter conseq&uuml;&ecirc;ncias tanto positivas como negativas para o solo, as plantas e as popula&ccedil;&otilde;es de esp&eacute;cies nativas do local invadido (Righi 1967, Hendrix &amp; Bohlen 2002). Por&eacute;m, sabe&#150;se muito pouco do efeito da presen&ccedil;a e da invas&atilde;o de novas &aacute;reas por estas esp&eacute;cies nas propriedades e processos ed&aacute;ficos, e sobre as popula&ccedil;&otilde;es (diversidade, abund&acirc;ncia, biomassa) de esp&eacute;cies de minhocas nativas e outros organismos ed&aacute;ficos (Gonz&aacute;lez <i>et al. </i>2006, Brown <i>et al. </i>2006a). Considerando a crescente press&atilde;o antr&oacute;pica sobre os ecossistemas naturais latino&#150;americanos, a fragilidade de muitos destes, e o poder invasor de certas esp&eacute;cies ex&oacute;ticas, a integridade da flora e fauna desses ambientes pode estar comprometida.</font></p>     <p align="justify"><font face="verdana" size="2">Esses fen&ocirc;menos e o potencial uso das esp&eacute;cies nativas e ex&oacute;ticas (e a propor&ccedil;&atilde;o de ambas; Fragoso <i>et al. </i>1997, Brown &amp; James 2007) como indicadores do estado de preserva&ccedil;&atilde;o precisam ser mais bem investigados. Al&eacute;m disso, as coletas realizadas at&eacute; o momento ainda s&atilde;o insuficientes para determinar com precis&atilde;o o endemismo de muitas esp&eacute;cies nativas latino&#150;americanas (Fragoso &amp; Brown 2007). Um maior esfor&ccedil;o de coleta deve ser feito, n&atilde;o s&oacute; para determinar a diversidade total de minhocas latino&#150;americanas, mas tamb&eacute;m para verificar aquelas que t&ecirc;m distribui&ccedil;&atilde;o restrita e/ou est&atilde;o amea&ccedil;adas, devido a necessidades ambientais espec&iacute;ficas, comportamento, e/ou press&atilde;o antr&oacute;pica sobre suas popula&ccedil;&otilde;es.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>MINHOCAS COMO INDICADORAS DO MANEJO DE ECOSSISTEMAS</b></font></p>     <p align="justify"><font face="verdana" size="2">As decis&otilde;es humanas sobre o manejo do solo e dos ecossistemas jogam um papel crucial na determina&ccedil;&atilde;o de diversos fatores importantes para a manuten&ccedil;&atilde;o das popula&ccedil;&otilde;es e diversidade de minhocas. A aus&ecirc;ncia de preparo do solo, o uso (ou n&atilde;o) de insumos agroqu&iacute;micos (calc&aacute;rio, fertilizantes, herbicidas, pesticidas, fungicidas) ou org&acirc;nicos (esterco/adubos org&acirc;nicos), cultivos de cobertura/adubos verdes, rota&ccedil;&otilde;es, irriga&ccedil;&atilde;o, fogo e m&aacute;quinas pesadas s&atilde;o fatores importantes (<a href="#f2">Fig. 2</a>). O efeito dessas pr&aacute;ticas &eacute; vari&aacute;vel e pode aumentar ou diminuir a diversidade, abund&acirc;ncia e atividade da popula&ccedil;&atilde;o de minhocas de um determinado local (Hendrix <i>et al. </i>1990). As esp&eacute;cies an&eacute;cicas e ep&iacute;geas s&atilde;o especialmente afetadas por pr&aacute;ticas que alteram a quantidade e qualidade da liteira, como queimadas, compacta&ccedil;&atilde;o, preparo do solo (efeitos negativos), ou o uso de coberturas vegetais, adubo org&acirc;nico e plantio direto (efeitos positivos). J&aacute; as esp&eacute;cies end&oacute;geas parecem ser menos afetadas e mais resistentes a muitas pr&aacute;ticas agr&iacute;colas, e tendem a ser mais abundantes em solos de agroecossiste&#150;mas (Fragoso <i>et al. </i>1999b).</font></p>     <p align="justify"><font face="verdana" size="2">A qualidade e quantidade de MO produzida e depositada dentro do solo e na sua superf&iacute;cie, e o tipo e combina&ccedil;&atilde;o de plantas usadas ou presentes no ecossistema, s&atilde;o importantes determinantes das popula&ccedil;&otilde;es e diversidade de minhocas em um determinado local (<a href="/img/revistas/azm/v26nspe2/a1f1.jpg" target="_blank">Fig. 1</a>). Ecossistemas com prote&ccedil;&atilde;o da superf&iacute;cie do solo e maior aporte de recursos org&acirc;nicos tendem a ter maiores popula&ccedil;&otilde;es de minhocas (Lavelle <i>et al. </i>2001). A presen&ccedil;a de &aacute;rvores (Lavelle &amp; Spain 2001) e de gram&iacute;neas (Deca&euml;ns <i>et al. </i>2004) tamb&eacute;m &eacute; importante, pois altera o microclima local e as propriedades do solo e, portanto, suas condi&ccedil;&otilde;es como h&aacute;bitat para as minhocas.</font></p>     <p align="justify"><font face="verdana" size="2">Na Am&eacute;rica Latina em geral, e no Brasil, em particular, diversos estudos t&ecirc;m avaliado popula&ccedil;&otilde;es de minhocas em diferentes ecossistemas, vegeta&ccedil;&atilde;o e pr&aacute;ticas de manejo do solo, mas apenas alguns estudos foram realizados em sistemas agroflo&#150;restais e agrosilvopastoris, e planta&ccedil;&otilde;es florestais (Lavelle <i>et al. </i>1994, Fragoso <i>et al. </i>1999b, James &amp; Brown 2006, Bautista &amp; Delgado 2003, Baretta <i>et al. </i>2007, Baretta <i>et al., </i>Rousseau <i>et al., </i>Falco &amp; Momo, Momo &amp; Falco e Zerbino, este n&uacute;mero). Sabe&#150;se que algumas t&eacute;cnicas como o plantio direto ou coberturas verdes perenes como planta&ccedil;&otilde;es de &aacute;rvores e pastagens, aumentam suas popula&ccedil;&otilde;es (Brown <i>et al. </i>2003, Deca&euml;ns <i>et al. </i>2004, Barros <i>et al. </i>2003). Por&eacute;m, sabe&#150;se muito pouco do efeito de sistemas mais integrados e menos intensivos de manejo (produ&ccedil;&atilde;o org&acirc;nica, sistemas florestais ou agroflorestais) sobre as popula&ccedil;&otilde;es de minhocas nativas latino&#150;americanas.</font></p>     <p align="justify"><font face="verdana" size="2">Portanto, para melhor entender e aproveitar o potencial das minhocas como indicadoras do manejo e da sustentabilidade das t&eacute;cnicas adotadas, especialmente em agroecossistemas, &eacute; ainda necess&aacute;rio aumentar o conhecimento das popula&ccedil;&otilde;es de minhocas em diferentes condi&ccedil;&otilde;es de solo, clima, vegeta&ccedil;&atilde;o e em diferentes tipos de agroecossistemas. Como h&aacute; v&aacute;rias metodologias para coletar minhocas, e suas popula&ccedil;&otilde;es s&atilde;o afetadas pelas condi&ccedil;&otilde;es clim&aacute;ticas, &eacute; necess&aacute;rio possuir dados de coletas em diferentes &eacute;pocas e anos e padronizar os m&eacute;todos e &eacute;pocas de coleta (Baretta <i>et al. </i>2007, Martins <i>et al.</i>, este n&uacute;mero). Esses dados podem ser usados tanto para fazer uma avalia&ccedil;&atilde;o do estado atual, quanto para conhecer e prever as tend&ecirc;ncias positivas ou negativas do manejo adotado nos ecossistemas sobre as popula&ccedil;&otilde;es de minhocas. Uma base de dados como essa poderia ser usada para comparar e prever mudan&ccedil;as induzidas por pr&aacute;ticas de manejo, e para escolher as t&eacute;cnicas que promovem as esp&eacute;cies desejadas, visando estimular seus efeitos ben&eacute;ficos ao solo e seu funcionamento.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>O 3&deg; ENCONTRO LATINO AMERICANO DE ECOLOGIA E TAXONOMIA DE OLIGOQUETAS (ELAETAO3)</b></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Seguindo a tradi&ccedil;&atilde;o iniciada com o 1&deg; Encontro Latino Americano de Ecologia e Taxonomia de Oligoquetas (ELAETAO 1) realizado em Londrina, Brasil (2003) (Brown &amp; Fragoso 2007), e continuada pelo ELAETAO2 em San Juan, Puerto Rico (2005) (Sastre&#150;de&#150;Jes&uacute;s &amp; Gonz&aacute;lez 2006), realizou&#150;se, em Curitiba, Brazil, o ELA&#150;ETAO3, de 3&#150;6 de dezembro de 2007.<sup><a href="#nota">1</a></sup> O tema do encontro foi "Minhocas como bioindicadoras ambientais: Princ&iacute;pios e pr&aacute;ticas." Participaram 49 pessoas de 10 pa&iacute;ses (<a href="#f3">Fig. 3</a>), e se apresentaram 30 palestras e mais de 30 p&ocirc;steres, em quatro sess&otilde;es: 1) Import&acirc;ncia ecol&oacute;gica das minhocas; 2) Princ&iacute;pios e pr&aacute;ticas do uso de minhocas como bioindicadoras de perturba&ccedil;&atilde;o em ecossistemas naturais; 3) Princ&iacute;pios e pr&aacute;ticas metodol&oacute;gicas do uso de minhocas como bioindicadoras ambientais; 4) Princ&iacute;pios e pr&aacute;ticas do uso de minhocas como bioindicadoras de perturba&ccedil;&atilde;o em ecossistemas produtivos.</font></p>     <p align="center"><font face="verdana" size="2"><a name="f3"></a></font></p>     <p align="center"><font face="verdana" size="2"><img src="/img/revistas/azm/v26nspe2/a1f3.jpg"></font></p>     <p align="justify"><font face="verdana" size="2">Os trabalhos escolhidos para publica&ccedil;&atilde;o nesse n&uacute;mero especial abordam diversos temas relacionados ao uso das minhocas como bioindicadoras: a) de perturba&ccedil;&atilde;o ou de condi&ccedil;&otilde;es ambientais em ecossistemas naturais (Fernandes <i>et al., </i>James &amp; Brown, Momo &amp; Falco); b) da fertilidade e do potencial produtivo do solo (Bartz <i>et al., </i>Brown <i>et al.</i>, Avila <i>et al.</i>, Huerta <i>et al., </i>Hern&aacute;ndez <i>et al. </i>); c) da contamina&ccedil;&atilde;o do solo (Andr&eacute;a); d) do manejo de ecossistemas (Lima &amp; Brussaard, Ruiz <i>et al., </i>Falco &amp; Momo, Baretta <i>et al., </i>Zerbino, Feijoo <i>et al., </i>Rousseau <i>et al.); </i>e e) m&eacute;todos de coleta e estudos quantitativos (incluindo a gen&eacute;tica molecular) para avalia&ccedil;&atilde;o do potencial como indicadoras (Martins <i>et al., </i>Baretta <i>et al., </i>Siqueira <i>et al., </i>Rousseau <i>et al.). </i>Outros trabalhos abordaram temas mais gerais, como a biodiversidade de oligoquetas na Am&eacute;rica do Sul (Christoffersen) e o conhecimento tradicional sobre minhocas (Schiedeck <i>et al.). </i>Finalmente, uma s&eacute;rie de trabalhos tamb&eacute;m enfocou a import&acirc;ncia de processos ecol&oacute;gicos que ocorrem durante a minhocultura (Brand&oacute;n <i>et al., </i>Dom&iacute;nguez <i>et al., </i>Aira &amp; Dom&iacute;nguez, Steffen <i>et al.), </i>a biologia das esp&eacute;cies envolvidas (Dom&iacute;nguez &amp; G&oacute;mez&#150;Brand&oacute;n, Dom&iacute;nguez <i>et al.), </i>e o uso do h&uacute;mus como biofer&#150;tilizante (Dom&iacute;nguez <i>et al., </i>Steffen <i>et al.).</i></font></p>     <p align="justify"><font face="verdana" size="2">Um tema amplamente comentado durante o evento foi a necessidade urgente de treinamento em taxonomia de minhocas, um processo complexo e de longa dura&ccedil;&atilde;o. Com a morte do Prof. Gilberto Righi e a aposentadoria iminente de outros taxono&#150;mistas Latino Americanos, restam poucos pesquisadores que podem identificar as esp&eacute;cies de minhocas nativas da Am&eacute;rica Latina (Christoffersen, este n&uacute;mero). Esse problema &eacute; ainda exacerbado pela exist&ecirc;ncia prov&aacute;vel de (no m&iacute;nimo) outras 1000 esp&eacute;cies de minhocas a serem encontradas e descritas na Am&eacute;rica Latina. Usando a taxa anual de descri&ccedil;&atilde;o de esp&eacute;cies de minhocas do Dr. Righi (6,4 esp&eacute;cies por ano; Fragoso <i>et al. </i>2003), seriam necess&aacute;rios 5 tax&ocirc;nomos trabalhando durante 43 anos, para descrever essas esp&eacute;cies.</font></p>     <p align="justify"><font face="verdana" size="2">Por&eacute;m, esses recursos humanos n&atilde;o est&atilde;o dispon&iacute;veis/existentes e deve&#150;se, portanto, buscar capacitar urgentemente novos taxonomistas para apoiar os esfor&ccedil;os de reconhecimento, conserva&ccedil;&atilde;o e manejo da mega&#150;diversa fauna latino&#150;americana. Al&eacute;m disso, deve&#150;se buscar digitalizar e disponibilizar as informa&ccedil;&otilde;es taxon&ocirc;micas (fotos, diagramas, descri&ccedil;&otilde;es) existentes das esp&eacute;cies conhecidas e produzir chaves de identifica&ccedil;&atilde;o para as esp&eacute;cies mais comuns, tanto nativas como ex&oacute;ticas na Am&eacute;rica Latina. Essas atividades est&atilde;o sendo realizadas pelos membros do ELAETAO e em breve as informa&ccedil;&otilde;es ser&atilde;o disponibilizadas na internet, visando facilitar os trabalhos de pesquisa com minhocas no continente Americano.</font></p>     <p align="justify"><font face="verdana" size="2">Em conclus&atilde;o a presen&ccedil;a, abund&acirc;ncia e diversidade de minhocas podem indicar o impacto causado por diversas atividades antr&oacute;picas em ecossistemas agr&iacute;colas e naturais, incluindo seu manejo, n&iacute;vel de perturba&ccedil;&atilde;o, conserva&ccedil;&atilde;o, contamina&ccedil;&atilde;o e produtividade potencial. Contudo, o uso das minhocas como indicadores ambientais, continua sendo restrito na Am&eacute;rica Latina, principalmente devido &agrave;s limita&ccedil;&otilde;es no conhecimento da biologia b&aacute;sica, da taxonomia e da ecologia da maioria das esp&eacute;cies presentes nos ecossistemas latino&#150;americanos. Alternativas para contornar essas dificuldades est&atilde;o sendo desenvolvidas e espera&#150;se que futuras pesquisas e coopera&ccedil;&atilde;o na &aacute;rea, assim como realizado nos ELAETAO tragam grandes avan&ccedil;os no conhecimento e no uso das minhocas como indicadoras ambientais.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>AGRADECIMENTOS</b></font></p>     <p align="justify"><font face="verdana" size="2">Os autores agradecem o apoio recebido durante o evento pelos colegas K.D. Sautter, Cl&aacute;udia Garbuio e D&eacute;cio Adams J&uacute;nior, e as organiza&ccedil;&otilde;es que financiaram o evento: Agrisus, Igua&ccedil;u Celulose e o CNPq.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>LITERATURA CITADA</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Aquino, A. M., M. E. F. Correia &amp; M. V. Alves. </b>2008. Diversidade da macrofauna ed&aacute;fica no Brasil. Pp. 143&#150;170. <i>In: </i>F.M.S. Moreira, J.O. Siqueira and L. Brussaard (Eds). <i>Biodiversidade do solo em ecossistemas brasileiros. </i>UFLA, Lavras.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370595&pid=S0065-1737201000050000100001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Baretta, D., G. G. Brown, S. W. James &amp; E. J. B. N. Cardoso. </b>2007. Earthworm populations sampled using collection methods in Atlantic forests with <i>Araucaria angustifolia. Scientia Agr&iacute;cola. </i>64: 384&#150;392.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370597&pid=S0065-1737201000050000100002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Barrigossi, J. A. F., G. G. Brown &amp; C. Pedretti Jr. </b>2009. Minhocas em arroz irrigado: pragas ou ben&eacute;ficas? In: <i>Anais do VI Congresso Brasileiro de Arroz Irrigado. </i>IRGA, Porto Alegre. p. 1&#150;4.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370599&pid=S0065-1737201000050000100003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Barrion, A. T. &amp; J. A. Litsinger. </b>1997. <i>Dichogaster </i>nr. <i>curgensis </i>Michaelsen (Annelida: Octochaetidae): an earthworm pest of terraced rice in the Philippine Cordilleras. <i>Crop Protection. </i>16: 89&#150;93.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370601&pid=S0065-1737201000050000100004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2"><b>Barros, E., A. Neves, E. Blanchart, E. C. M. Fernandes, E. Wandelli &amp; P. Lavelle. </b>2003. Development of the soil macrofauna community under silvopastoral and agrosilvicultural systems in Amazonia. <i>Pedobiologia. </i>47: 273&#150;280.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370603&pid=S0065-1737201000050000100005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Bartz, M. L. C., G. G. Brown, A. Pasini, A. C. R. Lima &amp; D. N. Gassen. </b>2009. As minhocas e o manejo do solo: o caso do plantio direto e do arroz irrigado. <i>Revista Plantio Direto. </i>01 jul. 2009: 4&#150;8.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370605&pid=S0065-1737201000050000100006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Bautista, F. &amp; C. Delgado. </b>2003. Abundancia de oligoquetos y gaster&oacute;podos con el uso de leguminosas como mantillo y cultivo de cobertera. Pp. 125&#150;143. <i>In: </i>G. G. Brown, C. Fragoso and L. J. Oliveira (Eds). <i>O uso da macrofauna ed&aacute;fica na agricultura do s&eacute;culo XXI: a import&acirc;ncia dos engenheiros do solo. </i>Embrapa Soja, Londrina.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370607&pid=S0065-1737201000050000100007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Blanchart, E., A. Albrecht, G. G. Brown, T. Dec&aacute;ens, A. Duboisset, P. Lavelle, L. Mariani &amp; E. Roose. </b>2004. Effects of tropical endogeic earthworms on soil erosion: a review. <i>Agriculture, Ecosystems &amp; Environment. </i>104: 303&#150;315.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370609&pid=S0065-1737201000050000100008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brown, G. G. </b>1995. How do earthworms affect microfloral and faunal community diversity? <i>Plant &amp; Soil. </i>170: 209&#150;231.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370611&pid=S0065-1737201000050000100009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brown, G. G. &amp; B. M. Doube. </b>2004. Functional interactions between earthworms, microorganisms, organic matter, and plants. Pp. 213&#150;239. <i>In: </i>C. A. Edwards (Ed). <i>Earthworm ecology, 2<sup>nd</sup>Edn. </i>CRC Press, Boca Raton.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370613&pid=S0065-1737201000050000100010&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brown, G. G. &amp; C. Fragoso. (Eds) </b>2007. <i>Minhocas na Am&eacute;rica Latina: biodiversidade e ecologia. </i>Embrapa Soja, Londrina.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370615&pid=S0065-1737201000050000100011&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brown, G. G. &amp; S. W. James. </b>2007. Biodiversidade, biogeografia e ecologia das minhocas no Brasil. Pp. 297&#150;381. <i>In: </i>G. G. Brown and C. Fragoso (Eds). <i>Minhocas na Am&eacute;rica Latina: biodiversidade e ecologia. </i>Embrapa Soja, Londrina.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370617&pid=S0065-1737201000050000100012&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brown, G. G., B. Pashanasi, C. Villenave, J. C. Patr&oacute;n, B.K. Senapati, S. Giri, I. Barois, P. Lavelle, E. Blanchart, R. J. Blakemore, A. V. Spain &amp; J. Boyer. </b>1999. Effects of earthworms on plant production in the tropics. Pp. 87&#150;147. <i>In: </i>P. Lavelle, L. Brussaard and P. F. Hendrix (Eds). <i>Earthworm management in tropical agroecosystems. </i>CAB International, Wallingford.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370619&pid=S0065-1737201000050000100013&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brown, G. G., I. Barois &amp; P. Lavelle. </b>2000. Regulation of soil organic matter dynamics and microbial activity in the drilosphere and the role of interactions with other edaphic functional domains. <i>European Journal of Soil Biology. </i>36: 177&#150;198.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370621&pid=S0065-1737201000050000100014&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brown, G. G., N. P. Benito, A. Pasini, K. D. Sautter, M. F. Guimar&atilde;es &amp; E. Torres. </b>2003. No&#150;tillage greatly increases earthworm populations in Paran&aacute; state, Brazil. <i>Pedobiologia. </i>47: 764&#150;771.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370623&pid=S0065-1737201000050000100015&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brown, G. G., C. A. Edwards &amp; L. Brussaard. </b>2004. How earthworms affect plant growth: burrowing into the mechanisms. Pp. 13&#150;49. <i>In: </i>C. A. Edwards (Ed). <i>Earthworm ecology, 2<sup>nd</sup> Edn. </i>CRC Press, Boca Raton.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370625&pid=S0065-1737201000050000100016&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brown, G. G., S. W. James, A. Pasini, D. H. Nunes, N. P. Benito, P. T. Martins &amp; K. D. Sautter. </b>2006a. Exotic, peregrine and invasive earthworms in Brazil: diversity, distribution and effects on soils and plants. <i>Caribbean Journal of Science. </i>42: 339&#150;358.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370627&pid=S0065-1737201000050000100017&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> </font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brown, G. G., J. R&ouml;mbke, H. Hofer, M. Verhaag, K. D. Sautter &amp; D. L. Q. Santana. </b>2006b. Biodiversity and function of soil animals in Brazilian agroforestry systems. Pp. 217&#150;242. <i>In: </i>A. C. Gama&#150;Rodrigues, N. F. Barros, E. F. Gama&#150;Rodrigues, M. S. Freitas, A. P. Viana, J. M. Jasmin, C. R. Marciano and J. G. A. Carneiro (Eds). <i>Sistemas agroflorestais: bases cient&iacute;cias para o desenvolvimento sustentado. </i>UENF, Campos dos Goytacazes.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370629&pid=S0065-1737201000050000100018&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Brussaard, L., P. C. de Ruiter &amp; G. G. Brown. </b>2007. Soil biodiversity for agricultural sustainability. <i>Agriculture, Ecosystems &amp; Environment. </i>121: 233&#150;244.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370631&pid=S0065-1737201000050000100019&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     ]]></body>
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<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2"><b>Vel&aacute;squez, E., C. Pelosi, D. Brunet, M. Grimaldi, M. Martins, A. C. Rendeiro, E. Barrios &amp; P. Lavelle. </b>2007. This ped is my ped: visual separation and NIRS spectra allow determination of the origins of soil macro&#150;aggregates. <i>Pedobiologia. </i>51: 75&#150;87.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370733&pid=S0065-1737201000050000100070&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Yeardley, R. B., J. M. Lazorchak &amp; L. C. Gast. </b>1996. The potential of an earthworm avoidance test for evaluation of hazardous waste sites. <i>Environmental Toxicology &amp; Chemistry. </i>15: 1532&#150;1537.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=370735&pid=S0065-1737201000050000100071&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>NOTA</b></font></p>     <p align="justify"><font face="verdana" size="2"><sup>1</sup> O evento foi organizado pela Universidade Positivo e a Embrapa Florestas e recebeu financiamento do CNPq, Em&#150;brapa (Agrofuturo), Igua&ccedil;u Celulose S.A., Funda&ccedil;&atilde;o Agrisus e Universidade Positivo.</font></p>      ]]></body><back>
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