Relationships between aquatic invertebrate communities, water-level fluctuations and different habitats in a subtropical lake

Environmental Monitoring and Assessment
Aurea Luiza Lemes da Silva, Mauricio Mello Petrucio

Abstract

In lakes, the littoral habitat and its invertebrate communities are often exposed to water-level fluctuations. We examined the effects of seasonal changes on water level, substrata availability and benthic fauna in the littoral zone of Peri Lake, a shallow lake that has experienced a strong reduction in water level due to changes in rainfall. In this study, we also examined whether the abundance and composition of aquatic invertebrates differed among the four substrata. Our main objective was to assess the effect of seasonal changes on water level and benthic invertebrates inhabiting the different types of substrata. Benthic invertebrates were sampled four different substrata (Schoenoplectus californicus, sand and stones, allochthonous leaf litter, and macrophyte stands), and we also measured meteorological, physical and chemical variables. We found that complex habitats, such as allochthonous leaf litter and aquatic macrophyte, stand to be colonised by a larger number of macroinvertebrates because they provide more habitats or potential niches for colonisation by different species. In addition, we observed that during periods of low water level, the presence of substrata in the littoral zone decreased, as did the associated bi...Continue Reading

References

Feb 24, 2009·Brazilian Journal of Biology = Revista Brasleira De Biologia·F A EstevesR L Bozelli
Sep 10, 2009·Brazilian Journal of Biology = Revista Brasleira De Biologia·M C RobertoS M Thomaz
Dec 31, 2010·Environmental Monitoring and Assessment·Mariana Coutinho Hennemann, Mauricio Mello Petrucio
Aug 29, 2014·Brazilian Journal of Biology = Revista Brasleira De Biologia·R A Zerlin, R Henry

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Citations

Nov 25, 2018·International Journal of Environmental Research and Public Health·Feng HuangZiqiang Xia
Jul 31, 2021·Environmental Monitoring and Assessment·Sunita ShresthaDeep Narayan Shah

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