Specific species response of Cladocera to the trophic and hydrological environments of lakes: A case study of a typical shallow mesotrophic lake

Intensified sensitivity and adaptability of zooplankton Bosminidae in subtropical shallow freshwater lakes with increasing trophic level

“…As shown in the western and central areas of Taihu Lake, Bosminidae reproduction expanded and abundance increased once the trophic level was enriched and the water level depth met the living conditions of the planktonic species Bosminidae (Figures 2, 5). Additionally, the significant positive correlations between oligotrophic species Bosminidae with TN and TP in Nanyi Lake were opposite of those in Taihu Lake, which was closely related to the fact that Nanyi Lake was in a critical period of transition from the mesotrophic to the eutrophic status (Cheng et al, 2021). Research by Dodson (1992) showed that the abundance of zooplankton usually increased with increasing nutritional levels within a certain range.…”

“…Most Cladocera remains were identified by their shell, headshield, postabdomen, and claw, and at least 100 individuals from each Cladocera (species) were counted in each sample (Jiang and Du, 1979;Szeroczyńska and Sarmaja-Korjonen, 2007). For the data on dating results and subfossil Bosminidae in the sedimentary cores, we refer to published literature and Supporting Information (Cheng et al, 2019(Cheng et al, , 2020c(Cheng et al, , 2021. Bosminidae (Bosmina spp.)…”

“…The Langchuan River and the New Langchuan River flow into the northeastern part of Nanyi Lake (Yao and Xue, 2016). Since the 1970s, significant increases in the trophic level and water level of Nanyi Lake have been observed, and currently, it is in a critical period of ecosystem transformation from mesotrophic to eutrophic status (Cheng et al, 2021).…”

“…Frontiers in Ecology and Evolution 08 frontiersin.org Shi et al, 2019;Cheng et al, 2020cCheng et al, , 2021). An analysis of modern zooplankton compositions showed that Cladocera was dominant in the three lakes and that the abundance was gradually increasing from Shengjin Lake through Nanyi Lake to Taihu Lake (Figure 2).…”

“…For example, a large number of Bosminidae (a relative abundance greater than 80% in the total concentration of Cladocera) have been found in shallow eutrophic lakes in the subtropical zone (Liu et al, 2008;Wang et al, 2019;Cheng et al, 2020b). Furthermore, the abundance of Bosmina longirostris is usually greater than that of the species Bosmina (E.) longispina (Cheng et al, 2019(Cheng et al, , 2021 in eutrophic lakes. Therefore, we studied whether the Bosminidae can be used as a new indicator of the evolution of eutrophication in freshwater lakes in a subtropical region.…”