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Land use and river-lake connectivity: Biodiversity determinants of lake ecosystems

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dc.contributor.authorXie, Huiyu
dc.contributor.authorMa, Yu
dc.contributor.authorJin, Xiaowei
dc.contributor.authorJia, Shiqi
dc.contributor.authorZHAO, Xianfu
dc.contributor.authorCai, Yongjiu
dc.contributor.authorXu, Jian
dc.contributor.authorWu, Fengchang
dc.contributor.authorGiesy, John
dc.date.accessioned2025-02-27T05:54:47Z
dc.date.available2025-02-27T05:54:47Z
dc.date.issued2024-04-25
dc.descriptionThe version of record of this article, first published in Environmental Science and Ecotechnology, is available online at Publisher’s website: https://doi.org/10.1016/j.ese.2024.100434
dc.description.abstractLake ecosystems confront escalating challenges to their stability and resilience, most intuitively leading to biodiversity loss, necessitating effective preservation strategies to safeguard aquatic environments. However, the complexity of ecological processes governing lake biodiversity under multi-stressor interactions remains an ongoing concern, primarily due to insufficient long-term bioindicator data, particularly concerning macroinvertebrate biodiversity. Here we utilize a unique, continuous, and in situ biomonitoring dataset spanning from 2011 to 2019 to investigate the spatio-temporal variation of macroinvertebrate communities. We assess the impact of four crucial environmental parameters on Lake Dongting and Lake Taihu, i.e., water quality, hydrology, climate change, and land use. These two systems are representative of lakes with Yangtze-connected and disconnected subtropical floodplains in China. We find an alarming trend of declining taxonomic and functional diversities among macroinvertebrate communities despite improvements in water quality. Primary contributing factors to this decline include persistent anthropogenic pressures, particularly alterations in human land use around the lakes, including intensified nutrient loads and reduced habitat heterogeneity. Notably, river-lake connectivity is pivotal in shaping differential responses to multiple stressors. Our results highlight a strong correlation between biodiversity alterations and land use within a 2e5 km radius and 0.05e2.5 km from the shorelines of Lakes Dongting and Taihu, respectively. These findings highlight the importance of implementing land buffer zones with specific spatial scales to enhance taxonomic and functional diversity, securing essential ecosystem services and enhancing the resilience of crucial lake ecosystems
dc.description.sponsorshipNational Natural Science Foundation of China (42322710, 41977364), National Key Research and Development Program of China (2021YFC3200105), and the Joint Research Project for the Yangtze River Conservation (Phase II), China (NO. 2022-LHYJ-02-0101)
dc.description.versionPeer Reviewed
dc.identifier.doi10.1016/j.ese.2024.100434
dc.identifier.urihttps://hdl.handle.net/10388/16645
dc.language.isoen
dc.publisherElsevier
dc.rightsAttribution-NonCommercial-NoDerivs 2.5 Canadaen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.5/ca/
dc.subjectTaxonomic richness
dc.subjectFunctional diversity
dc.subjectBiotic homogenization
dc.subjectRiver-lake connectivity
dc.subjectMultiple stressors
dc.titleLand use and river-lake connectivity: Biodiversity determinants of lake ecosystems
dc.typeArticle

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