SciELO - Scientific Electronic Library Online

 número98Morfogénesis de la fase sexual de siete taxa epífitos de Polypodium (Polypodiaceae) de MéxicoDiversidad y morfología de las especies de Pseudo-nitzschia (Bacillariophyta) del parque nacional Sistema Arrecifal Veracruzano, suroeste del Golfo de México índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados

  • Não possue artigos similaresSimilares em SciELO


Acta botánica mexicana

versão On-line ISSN 2448-7589versão impressa ISSN 0187-7151


ZEPEDA-GOMEZ, Carmen; LOT-HELGUERAS, Antonio; NEMIGA, Xanat Antonio  e  MADRIGAL-URIBE, Delfino. Floristics and diversity of the Lerma river wetlands in the State of Mexico. Act. Bot. Mex [online]. 2012, n.98, pp.23-43. ISSN 2448-7589.

The Lerma marshes also known as Chignahuapan, Chimaliapan and Chiconahuapan are natural protected areas and bird conservation zones. They are one of the priority hydrological regions, threatened and highly diverse in Mexico. However there is little updated information about their vegetation, even when they are in clear danger of disappear. This study identified the aquatic vascular flora and the changes in plant diversity of the three bodies of water by means of the collection of all species; additionally we applied the line-intercept method in 20 to 40 sites of each water body. We find 97 species of vascular plants included in 39 families and 65 genera. Forty-six percent are strict aquatic, 31% sub-aquatic and 20% tolerant. The families Cyperaceae, Asteraceae, Lemnaceae, Poaceae, Apiaceae and Polygonaceae are the better represented. The diversity of Lerma marshes is relatively high (Shannon index = 3.2) and presents particular variations in each wetland. Chiconahuapan shows the highest values and provides floristic heterogeneity to wetlands. The prevalence of terrestrial and aquatic weeds suggests a continued deterioration of these habitats; however, the presence of species characteristic of flooded areas and with restricted distribution suggests that the marshes still have significant plant diversity. Unfortunately these systems are subject to drastic and irreversible negative changes, if the conditions of disturbance, pollution and declining water levels are not reversed.

Palavras-chave : Chiconahuapan; Chignahuapan; Chimaliapan; diversity; floristic; Lerma wetlands.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons