Biodiversity buffers the impact of eutrophication on ecosystem functioning of submerged macrophytes on the Yunnan-Guizhou Plateau, Southwest China

Wang, Hao; Zhang, Xiaolin; Shan, Hang; Lv, Chaochao; Ren, Wenjing; Wen, Zihao; Tian, Yun; Weigel, Benjamin; Ni, Leyi; Cao, Ting

doi:10.1016/j.envpol.2022.120210

Cited by 17 publications

(3 citation statements)

References 108 publications

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“…emerged as primary covariates of diversity measures in our study, and considering also that macrophyte species richness did not correlate with waterbody morphometry, we presume that structural complexity, or heterogeneity of habitable space [168,169], was a more important driver than merely plant abundance for rotifer richness. Together with similar observations for other biota (e.g., [170][171][172][173]) and functional aspects [174][175][176], this adds to the importance of vegetation characteristics such as species richness or complexity for conservation.…”

Section: Discussionsupporting

confidence: 70%

Diversity, Composition and Environmental Relations of Periphytic Rotifer Assemblages in Lentic Freshwater Bodies (Flanders, Lower Belgium)

Denys,

De Smet

2023

Diversity

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Periphytic rotifer assemblages from lentic habitats are understudied. To improve knowledge on the principal environmental determinants of their structure and composition, we examined summer periphyton from 184 freshwater bodies from a taxonomic and multi-trait-based perspective. Only the latter allowed consideration of all bdelloids. Alpha diversity decreased with electrolyte and aluminium concentration but increased with macrophyte richness, pointing at salinization, metal toxicity and loss of structural niche heterogeneity as potential threats for rotifer diversity. Replacement was the prominent component of beta diversity, with acidified sites showing the highest local contributions. Variation partitioning indicated that local conditions explained variation in species composition best, but general setting (soil type, land cover, connectivity) and spatial context were also not insignificant. Redundancy analysis related species composition more particularly to gradients of pH and trophic status, whereas the representation of functional groups was structured mainly by phytoplankton productivity. Mirroring shifts observed in the plankton, high phytoplankton productivity associated with larger size and more detritibacterivory. Dominance of collectors constrained variation in guild ratios, underlining the need for more refined functional approaches. To aid the use of periphytic rotifers in regional water quality assessment, we identified indicators and community thresholds for pH and trophic variables and determined optima and tolerances for individual taxa.

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Section: Discussionsupporting

confidence: 70%

Diversity, Composition and Environmental Relations of Periphytic Rotifer Assemblages in Lentic Freshwater Bodies (Flanders, Lower Belgium)

Denys,

De Smet

2023

Diversity

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“…The comprehensive Trophic Level Index (TLI) analysis shows that most areas of the Jinan watershed are at moderate eutrophic levels, pointing out the prevalence and severity of the eutrophication problem in water bodies. Eutrophication not only leads to overgrowth of phytoplankton but also may trigger the phenomenon of water bloom, which reduces water quality and poses a threat to ecosystem health (Wang et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Phytoplankton community structure and its driving factors in autumn in Jinan, China

Ma,

Zhu,

Jin

2024

IJAFSR

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Human activities often cause multiple impacts on aquatic ecosystems, including changes in water quality, biodiversity, community composition, etc. However, the effects of human activities on phytoplankton in highly urbanized aquatic ecosystems are poorly understood. In this study, we conducted an in-depth analysis of phytoplankton communities and water environment factors in the Jinan City watershed in September 2020, focusing on 18 water environment factors. We found that nitrate nitrogen, total nitrogen, total phosphorus, and phosphate were the key drivers affecting the quality of the water environment in the area through principal component analysis (PCA). The results of the phytoplankton investigation showed that 143 species of phytoplankton from 8 phyla were found in the Jinan watershed, dominated by Chlorophyta, Bacillariophyta, and Cyanobacteria, of which cyanobacteria were dominant in density, while cryptophytes were the first in biomass. The assessment of phytoplankton diversity showed that the Jinan City watershed had high biodiversity, with an average Shannon Wiener Diversity Index of 3.12. RDA analysis revealed that permanganate index, total phosphorus, bathymetry, chlorophyll a, pH, and phosphate were significantly correlated with the structure of the phytoplankton community. Comprehensive trophic index (TLI) analysis showed that most of the watersheds in Jinan were moderately eutrophic. These results provide essential information for understanding the water quality status and aquatic biodiversity in Jinan City watersheds and provide a scientific basis for water environment management and protection.

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“…Nevertheless, lake ecosystems have received very little attention (Skacelova and Leps, 2014;Danet et al, 2021), and the results from the limited existing studies are controversial. Some studies have demonstrated that species richness positively affects the community biomass of submerged macrophytes (Gustafsson and Bostrom, 2011;Wang et al, 2022b), while others found no relationships (Riis et al, 2018;Zhang et al, 2019). Water depth is widely acknowledged as the main factor determining the submerged macrophytes' growth and distribution because water depth affects light intensity (Strand and Weisner, 2001;Bai et al, 2014;Dong et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Water depth modulates the species richness–biomass relationship in submerged macrophytes

Wen

Wang

Shan

et al. 2023

Front. Environ. Sci.

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The effect of biodiversity on ecosystem productivity has been a controversial issue in ecological research. The species richness–productivity relationship is highly variable in natural ecosystems, with a positive relationship being one of the most commonly observed relationships. Previous regional studies from terrestrial ecosystems have demonstrated that environmental gradients can regulate the species richness–productivity relationship. However, how this relationship varies in freshwater ecosystems across spatial environment gradients remains unclear. In this study, we propose that the species richness–productivity relationship can be modulated by the water depth. Here, we surveyed the submerged macrophyte community structure by establishing 24 transects and 642 quadrats in Erhai Lake, Yunnan Plateau, China. Our findings highlight that the species richness–productivity relationship gradually changed from slightly positive to strongly positive as the environment became more light-limited with the increasing water depth, supporting the stress-gradient hypothesis. The results from this study provide new insights into the biodiversity–ecosystem functioning relationships and in managing lake macrophyte communities and productivity.

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Biodiversity buffers the impact of eutrophication on ecosystem functioning of submerged macrophytes on the Yunnan-Guizhou Plateau, Southwest China

Cited by 17 publications

References 108 publications

Diversity, Composition and Environmental Relations of Periphytic Rotifer Assemblages in Lentic Freshwater Bodies (Flanders, Lower Belgium)

Diversity, Composition and Environmental Relations of Periphytic Rotifer Assemblages in Lentic Freshwater Bodies (Flanders, Lower Belgium)

Phytoplankton community structure and its driving factors in autumn in Jinan, China

Water depth modulates the species richness–biomass relationship in submerged macrophytes

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