Functional Groups of Benthic Macroinvertebrates in Relation to Physicochemical Factors in Keqin Lake, Zhalong National Nature Reserve, Northeastern China

Li, X.Y.; Liu, M.H.; Sun, Xin; Li, S.; Zhao, Y.X.; Liu, D.; Chai, F.Y.; Yu, Hai

doi:10.15666/aeer/1901_279292

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“…Some studies have demonstrated the predictive potential of zooplankton functional groups for environmental changes in lakes, highlighting the important role the community has in environmental monitoring (Oh et al, 2017;Rusak et al, 2002;Sodré & Bozelli, 2019;Goździejewska et al, 2021). Based on functional traits, the responses of functional groups to variations in limnological conditions is an issue explored in various biological communities, such as phytoplankton (Reynolds et al, 2002;Salmaso et al, 2015;Cupertino et al, 2019), periphyton (Dunck et al, 2013(Dunck et al, , 2015, and macroinvertebrates (Bonsdorff & Pearson, 1999;Cummins, 2016;Li et al, 2021). Although the number of studies on the functional traits of zooplankton communities has been gradually increasing, there is a gap in functional-approach studies worldwide (Gomes et al, 2019), especially when considering tropical lakes and reservoirs.…”

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confidence: 99%

Role of zooplanktonic functional groups in a shallow mesotrophic reservoir

et al. 2023

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Aim Zooplankton functional groups play an important role in lake functioning and can readily respond to environmental changes and may be associated with phytoplankton changes. In warmer regions, zooplankton species have a smaller body size, which decreases their grazing capacity, attenuating top-down control throughout phytoplankton. We evaluated changes in density and biomass of zooplankton functional groups and their relationship with algal groups in horizontal reservoir zonation (pelagic, sublittoral, and eulittoral zones) of the shallow reservoir. We hypothesize that the density and biomass of zooplankton functional groups are associated with fluctuations in the phytoplankton groups in horizontal reservoir zonation. Methods Changes in the structure of the zooplankton functional group and the controlling limnological variables were verified at three sampling stations: pelagic, sublittoral, and eulittoral zones in a mesotrophic reservoir. Results Zooplankton species were distributed in seven functional groups. The density and biomass of zooplankton functional groups were not clearly associated with biomass variations of phytoplankton groups. However, the zooplankton functional groups were associated with horizontal reservoir zonation, where specific groups were found in the pelagic, sublittoral, and eulittoral zones. Conclusions The zooplankton functional groups were related to the horizontal zonation of the reservoir but were not associated with changes in the phytoplankton groups due to the dominance of small organisms.

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