Brazilian Journal of Biology | |
Limnological changes in Dom Helvécio Lake (South-East Brazil): natural and anthropogenic causes | |
Pm. Maia-barbosa2  Lg. Barbosa1  Sl. Brito2  F. Garcia1  Cfa Barros1  Mbg Souza1  N. Mello2  As. Guimarães2  Far Barbosa1  | |
[1] ,Universidade Federal de Minas Gerais Instituto de Ciências Biológicas Laboratório de Ecologia do ZooplânctonBelo Horizonte MG ,Brazil | |
关键词: tropical lake; long term studies; trophic changes; phytoplankton; zooplankton; lago tropical; estudos de longa duração; alterações tróficas; fitoplâncton; zooplâncton; | |
DOI : 10.1590/S1519-69842010000400010 | |
来源: SciELO | |
【 摘 要 】
In order to verify changes in physical, chemical and biological features of Dom Helvécio Lake (South-East Brazil), this study compares previous and recent data obtained from limnological investigations over three decades. Plankton species composition and density together with environmental data from 1978, 1983, and during 1999 to 2006 showed changes driven by seasonal climatic forces or by anthropogenic causes. Changes in diversity are shown as a consequence of alternation of rainy and dry periods and introduction of exotic fish species. Finally, suggestions are made for improving conservation efforts in the area, through planned actions and monitoring programmes.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
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RO202005130172171ZK.pdf | 697KB | download |