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Different responses of taxonomic and functional trait structure of benthic macroinvertebrate assemblages to eutrophication in a large Chinese freshwater lake
Ji, L.; Wang, Q.; Cui, S.; Chen, W.; Zhang, B.; Chu, J.; Ding, Y.; Shi, H.; Cao, Z.; Wang, L.; Zhang, K.; Jiang, X.; Wang, W. (2024). Different responses of taxonomic and functional trait structure of benthic macroinvertebrate assemblages to eutrophication in a large Chinese freshwater lake. Environm. Sc. & Poll. Res. 31(6): 9732-9744. https://dx.doi.org/10.1007/s11356-023-31760-6
In: Environmental Science and Pollution Research. Springer: Heidelberg; Berlin. ISSN 0944-1344; e-ISSN 1614-7499
|  |
| Auteurs | | Top |
- Ji, L.
- Wang, Q.
- Cui, S.
- Chen, W.
- Zhang, B.
|
- Chu, J.
- Ding, Y.
- Shi, H.
- Cao, Z.
|
- Wang, L.
- Zhang, K.
- Jiang, X.
- Wang, W.
|
| Abstract |
Functional trait measures have the potential to represent local habitat conditions and are considered promising tools for biomonitoring and bioassessment programs. Macroinvertebrates are an ecologically significant group in freshwater ecosystems and possess a range of functional traits which are employed to assess ecological quality. Nevertheless, the relationships between macroinvertebrate functional structure and anthropogenic disturbances remain poorly understood. In this study, we conducted a comparison of how functional trait-based and taxonomy-based composition of macroinvertebrate assemblages responded to eutrophication in Lake Taihu, a typical large eutrophic freshwater lake in China. Specifically, we examined both the taxonomy-based and trait-based compositions of benthic macroinvertebrates varied along the eutrophication gradient. Eutrophication was associated with remarkable decreases in the abundance of gastropod taxa and increases in Oligochaeta and Chironomidae. Ten categories belonging to six traits were significantly different among three site groups. The eutrophic and transition sites showed higher abundance of Size2, burrowers, and integument-respiration organisms than macrophytic sites, whereas abundance of Size1, conical-shaped, sprawlers, scrapers, and lung-respiration were higher in macrophytic sites. Both taxonomic (36.8%) and functional compositions (39.8%) of macroinvertebrate assemblages were influenced by the same variables: CODMn and transparency. Our study showed that macroinvertebrate trait-based approaches can be considered a useful supplement to traditional taxonomic approach for biomonitoring programs in freshwater lakes. |
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