Eutrophication causes invertebrate biodiversity loss and decreases cross-taxon congruence across anthropogenically-disturbed lakes

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Huan Wang, Jorge García Molinos, Jani Heino, Huan Zhang, Peiyu Zhang, Jun Xu. Eutrophication causes invertebrate biodiversity loss and decreases cross-taxon congruence across anthropogenically-disturbed lakes. Environment International 153 (2021), 106494, ISSN 0160-4120. https://doi.org/10.1016/j.envint.2021.106494

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Title: Eutrophication causes invertebrate biodiversity loss and decreases cross-taxon congruence across anthropogenically-disturbed lakes
Author: Wang, Huan; García Molinos, Jorge; Heino, Jani; Zhang, Huan; Zhang, Peiyu; Xu, Jun
Publisher: Pergamon
Date: 2021
Language: en
Belongs to series: Environment International 153 (2021), 106494
ISSN: 0160-4120
DOI: https://doi.org/10.1016/j.envint.2021.106494
URI: http://hdl.handle.net/10138/334633
Abstract: Eutrophication is a major problem currently impacting many surface water ecosystems. Impacts of increased nutrient concentrations on biodiversity may differ between different scales, different organism groups, and different trophic states. Surveys at different spatial scales have suggested that biodiversity of different taxa may exhibit significant cross-taxon congruence. In our study, we examined the diversity of zooplankton and zoobenthos across 261 lakes in the Lake Taihu watershed, an area that is undergoing a severe eutrophication process. We tested the cross-taxon congruence in species richness and Shannon-Wiener diversity between zooplankton and zoobenthos along a nutrient gradient across the lakes. Our findings were consistent with the intermediate disturbance hypothesis, considering nutrient input as the disturbance. Also, we found significant cross-taxon congruence between zooplankton and zoobenthos diversities. Our results confirmed that excess nutrient levels resulted in diversity loss and community simplification. Zoobenthos were more sensitive to nutrient increases compared with zooplankton, which decreased cross-taxon congruence because these organism groups did not respond similarly to the anthropogenic disturbance.
Description: Highlights • The invertebrate biodiversity across 261 lakes in the Lake Taihu basin was studied. • The α diversity was consistent with the intermediate disturbance hypothesis. • Significant cross-taxon congruence was found between zooplankton and zoobenthos. • Zoobenthos were more sensitive to nutrient increases compared with zooplankton. • Eutrophication causes biodiversity loss and decreases cross-taxon congruence.
Subject: eutrophication
cross-taxon congruence
diversity
zooplankton
zoobenthos
China
Lake Tai
Lake Taihu
invertebrate
biodiversity
intermediate disturbance hypothesis
zoobenthos
lakes
natural diversity
plankton
nutrients (plants)
water quality
strain on the water system
types and species
nutrient content
diatoms
environmental rehabilitation
ecosystems (ecology)
Subject (ysa): plankton
järvet
lajit
selkärangattomat
diversiteetti
eläinplankton
vastaavuus
ekologia
luonnon monimuotoisuus
Kiina
rehevöityminen
biodiversiteetti
pohjaeläimistö
Taihu-järvi
biodiversiteetti
luonnon monimuotoisuus
plankton
ravinteet
vedenlaatu
vesistönkuormitus
lajit
ravinnepitoisuus
piilevät
ennallistaminen
ekosysteemit (ekologia)
Rights: CC BY-NC-ND 4.0


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