Relationship between turbidity and the benthic community in the preserved Montebello Lakes in Chiapas, Mexico
Por:
Sosa-Aranda, Inari, ZAMBRANO, LUIS
Publicada:
1 ene 2020
Resumen:
One of the consequences of increased turbidity in lakes is the
modification of the structure of the benthic macroinvertebrate
community. To understand this relationship, we evaluated 13 lakes in the
Montebello Lakes National Park in Chiapas. The lakes have been affected
by gradual eutrophication over decades, producing variable transparency
values among lakes. Macroinvertebrates were sampled from each lake in
the rainy and dry seasons, and species richness and abundance were
calculated and related to Secchi disc transparency. Cluster analysis
showed that community composition was similar in pristine and
semitransparent lakes, in contrast with turbid lakes. Considering
macroinvertebrate groups, hyalellids were dominant in pristine and
semiturbid lakes, whereas chironomids were dominant in turbid lakes. A
significant quadratic relationship between richness and Secchi disc
depth values was found, which is consistent with the intermediate
production hypothesis. This study shows how a gradual change in Secchi
disc depth can markedly modify benthic communities.
Filiaciones:
Sosa-Aranda, Inari:
Univ Nacl Autonoma Mexico, Inst Biol, Apartado Postal 70-367,Ciudad Univ, Mexico City 04510, DF, Mexico
ZAMBRANO, LUIS:
Univ Nacl Autonoma Mexico, Inst Biol, Apartado Postal 70-367,Ciudad Univ, Mexico City 04510, DF, Mexico
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