Linking pollution to biodiversity and ecosystem multifunctionality across benthic-pelagic habitats of a large eutrophic lake: A whole-ecosystem perspective

Zhang, Weizhen; Shen, Jian; Wang, Jianjun

doi:10.1016/j.envpol.2021.117501

Cited by 27 publications

(12 citation statements)

References 75 publications

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“…The aquatic biodiversity is rapidly changing due to eutrophication, with potentially large and even irreversible consequences in the ecosystem structure and functioning worldwide (Dalu et al, 2022 ; Kattel, 2022 ; Qin et al, 2013 ; Reid et al, 2019 ; Zhang et al, 2021 ). Especially the freshwater ecosystems have become the most vulnerable and threatened in regions where humans have persistently intensified their use for various purposes (Reid et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

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Macroinvertebrate diversity and ecosystem functioning across the eutrophication gradients of the middle and lower reaches of Yangtze River lakes (China)

Cai

Dong

Kattel

et al. 2023

Ecology and Evolution

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Biodiversity, which strengthens ecosystem stability, ecosystem function, and ecosystem services, is threatened by anthropogenic perturbation and climate change worldwide. However, despite the study of the role of biodiversity in multiple facets of freshwater ecosystems, the linkages between macroinvertebrates diversity and ecosystem functioning have not yet been well‐assessed in eutrophication gradients of lowland river‐floodplain systems. In this study, we have examined the relationship between macroinvertebrates diversity (species diversity, functional diversity, phylogenetic diversity) and macroinvertebrates biomass across the three typically featured eutrophication gradients: “MACROPHYTE,” “TRANSITION,” and “PHYTOPLANKTON,” of floodplain lakes in the middle and lower reaches of the Yangtze River (China). Our results suggest that macroinvertebrates diversity in three different lacustrine conditions, biomass, and the relationship between diversity and biomass varied along eutrophication gradients. Functional richness and variance (divergence in taxon community) were the two important macroinvertebrate diversity indices, which accounted for the largest amount of variation in the biomass (63% in PHYTOPLANKTON lakes and 57% in MACROPHYTE lakes, respectively). We also found that the macrophyte coverage is more important than the relative abundance in maintaining the macroinvertebrates diversity and biomass in lowland Yangtze floodplain lake systems, while the relative abundance of macrophyte would change the BEF relationship. Our results demonstrate the functional performance of Yangtze River lakes, which would change with increased nutrient loading and decreased macrophyte coverage and would highlight the significance of the restoration of macrophytes to reduce nutrient loads.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Macroinvertebrate diversity and ecosystem functioning across the eutrophication gradients of the middle and lower reaches of Yangtze River lakes (China)

Cai

Dong

Kattel

et al. 2023

Ecology and Evolution

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“…We Z score-transformed the input variables to allow cross-comparisons and performed an analysis of variance (ANOVA) to estimate the significance of the standardized path coefficient (β) and the model. The final selected model met the criteria as previously mentioned ( Zhang et al, 2021b ). The standardized total effect (SE) of each variable on microbial C or N limitation was then calculated by the significant path coefficient, which included both direct and indirect correlations.…”

Section: Methodsmentioning

confidence: 99%

Extracellular enzyme stoichiometry reveals carbon and nitrogen limitations closely linked to bacterial communities in China’s largest saline lake

et al. 2022

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Saline lakes possess substantial carbon storage and play essential roles in global carbon cycling. Benthic microorganisms mine and decompose sediment organic matter via extracellular enzymes to acquire limiting nutrients and thus meet their element budgets, which ultimately causes variations in sediment carbon storage. However, current knowledge about microbial nutrient limitation and the associated organic carbon changes especially in saline lake remains elusive. Therefore, we took Qinghai Lake, the largest saline lake of China, as an example to identify the patterns and drivers of microbial metabolic limitations quantified by the vector analyses of extracellular enzyme stoichiometry. Benthic microorganisms were dominantly colimited by carbon (C) and nitrogen (N). Such microbial C limitation was aggravated upon the increases in water salinity and sediment total phosphorus, which suggests that sediment C loss would be elevated when the lake water is concentrated (increasing salinity) and phosphorus becomes enriched under climate change and nutrient pollution, respectively. Microbial N limitation was predominantly intensified by water total nitrogen and inhibited by C limitation. Among the microbial drivers of extracellular enzyme investments, bacterial community structure consistently exerted significant effects on the C, N, and P cycles and microbial C and N limitations, while fungi only altered the P cycle through species richness. These findings advance our knowledge of microbial metabolic limitation in saline lakes, which will provide insights towards a better understanding of global sediment C storage dynamics under climate warming and intensified human activity.

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“…Consequently, the abundance, diversity, and community composition of bacterioplankton and eukaryotes are controlled by nutritional (e.g., total nitrogen and total phosphorus) and non‐nutritional (e.g., temperature and pH) factors (Mo et al, 2021; Te et al, 2017; Wan, Gadd, Gu, et al, 2021). Microbial taxonomic and phylogenetic α‐diversities are closely linked with MNC in terrestrial and aquatic environments (Wan, Liu, Li, et al, 2021; Zhang et al, 2021). Therefore, it is of great importance to decipher planktonic diversity and diversity‐driven MNC.…”

Section: Introductionmentioning

confidence: 99%

Abundance and diversity of eukaryotic rather than bacterial community relate closely to the trophic level of urban lakes

Wan

Gadd

et al. 2022

Environmental Microbiology

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Scientific understanding of biotic effects on the water trophic level is lacking for urban lakes during algal bloom development stage. Based on the Illumina MiSeq sequencing, quantitative polymerase chain reaction (PCR), and multiple statistical analyses, we estimated distribution patterns and ecological roles of planktonic bacteria and eukaryotes in urban lakes during algal bloom development stage (i.e., April, May, and June). Cyanobacteria and Chlorophyta mainly dominated algal blooms. Bacteria exhibited significantly higher absolute abundance and community diversity than eukaryotes, whereas abundance and diversity of eukaryotic rather than bacterial community relate closely to the water trophic level. Multinutrient cycling (MNC) index was significantly correlated with eukaryotic diversity rather than bacterial diversity. Stronger species replacement, broader environmental breadth, and stronger phylogenetic signal were found for eukaryotic community than for bacterial community. In contrast, bacterial community displayed stronger community stability and environmental constraint than eukaryotic community. Stochastic and differentiating processes contributed more to community assemblies of bacteria and eukaryotes. Our results emphasized that a strong linkage between planktonic diversity and MNC ensured a close relationship between planktonic diversity and the water trophic level of urban lakes. Our findings could be useful to guide the formulation and implementation of environmental lake protection measures.

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Linking pollution to biodiversity and ecosystem multifunctionality across benthic-pelagic habitats of a large eutrophic lake: A whole-ecosystem perspective

Cited by 27 publications

References 75 publications

Macroinvertebrate diversity and ecosystem functioning across the eutrophication gradients of the middle and lower reaches of Yangtze River lakes (China)

Macroinvertebrate diversity and ecosystem functioning across the eutrophication gradients of the middle and lower reaches of Yangtze River lakes (China)

Extracellular enzyme stoichiometry reveals carbon and nitrogen limitations closely linked to bacterial communities in China’s largest saline lake

Abundance and diversity of eukaryotic rather than bacterial community relate closely to the trophic level of urban lakes

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