Abstract

MALDONADO-JIMENEZ, Ingrid  and  APARICIO-SAAVEDRA, Martha Elizabeth. Estimation of carbón storage in macrophyte biomass in the interior Bay of Puno, Titicaca lake. Ecosistemas y recur. agropecuarios [online]. 2021, vol.8, n.2, e2848.  Epub Jan 31, 2022. ISSN 2007-901X.  https://doi.org/10.19136/era.a8n2.2848.

The study was conducted in the Puno Inland Bay of Lake Titicaca, located on the shores of the city of Puno, whose activities such as the emission of CO2 into the atmosphere affect this area of the lake. The objective was to estimate the carbon storage capacity of macrophytes, Schoenoplectus tatora, Potamogeton strictus, Myriophyllum elatinoides and Elodea potamogeton. Sampling was carried out in five areas of the inner Bay of Puno, with two replicates at each point, sampling was done in the months of August, September, October and November. To estimate the carbon content in each macrophyte, the amount of organic matter in percentage was determined by the calcination method, and multiplied with the conversion factor of 1.724. The variables considered in the study were: biomass content, carbon, CO2, pH, temperature, depth and transparency; the carbon conversion percentages found were 55% for S. tatora, 48% for E. potamogeton, 47.5% for M. elatinoides and 47.4% for P. strictus. The results show that: S. tatora is the species that captured the greatest amount of carbon with a maximum of 1 276 g.m2, M. elatinoides with a maximum value of 298.8 g.m2, E. potamogeton with 313.7 g.m2 and P. strictus with 84.5 g.m2; influencing in greater proportion the depth and transparency. Therefore, S. tatora was the species that stored the greatest amount of carbon in its biomass and per square meter in the area studied.

Keywords : Biomass; carbon; CO₂; macrophytes; storage.

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