Number of simultaneously acting global change factors affects composition, diversity and productivity of grassland plant communities

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Dec. 19, 2022

Plant communities experience impacts of increasing numbers global change factors (e.g., warming, eutrophication, pollution). Consequently, unpredictable effects could arise. However, information about multi-factor on plant is scarce. To test plant-community responses to multiple (GCFs), we subjected sown and transplanted-seedling (0, 1, 2, 4, 6) co-acting GCFs, assessed individual GCFs community composition productivity. GCF number reduced species diversity evenness both types, whereas none the alone affected these measures. In contrast, positively productivity community. Our findings show that simultaneously acting can affect in ways differing from those expected single factor effects, which may be due biological sampling or both. exploring multifactorial nature crucial better understand ecological change.

Language: Английский

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Multi-omics analysis provides insight into liver metabolism in yellow catfish (Pelteobagrus fulvidraco) under hypoxic stress

Aquaculture, Journal Year: 2024, Volume and Issue: 583, P. 740531 - 740531

Published: Jan. 4, 2024

Language: Английский

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Heat waves rather than continuous warming exacerbate impacts of nutrient loading and herbicides on aquatic ecosystems

Environment International, Journal Year: 2022, Volume and Issue: 168, P. 107478 - 107478

Published: Aug. 18, 2022

Submerged macrophytes are vital components in shallow aquatic ecosystems, but their abundances have declined globally. Shading by periphyton and phytoplankton/turbidity plays a major role this decline, the competing primary producers subject to complex influence of multiple stressors such as increasing temperatures, nutrient loading herbicides. Their joint impact has rarely been tested is difficult predict due potentially opposing effects on different producers, interactions grazers. Here, we used 48 mesocosms (2500 L) simulate lakes dominated two typical submerged macrophytes, bottom-dwelling Vallisneria denseserrulata canopy-forming Hydrilla verticillata, associated food web components. We applied combination loading, continuous warming, heat waves glyphosate-based herbicides test how these interactively growth phytoplankton producers. Warming or alone did not affect abundance, negatively influenced biomass V. denseserrulata. Nutrient increased water turbidity thus affected macrophyte biomass, particularly for denseserrulata, shading. Glyphosate each producer under ambient temperatures. However, facilitated combined glyphosate treatments more than warming. As consequence, H. verticillata was lowest conditions indicating potential decline. Our study demonstrated that alter can eventually lead loss communities shift dominance. These results show risks ponds agricultural landscapes underline need stressor studies base future management.

Language: Английский

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Prokaryotic and eukaryotic periphyton responses to warming, nutrient enrichment and small omnivorous fish: a shallow lake mesocosms experiment

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 120942 - 120942

Published: Jan. 1, 2025

Global change stressors, including climate warming, eutrophication, and small-sized omnivorous fish, may exert interactive effects on the food webs functioning of shallow lakes. Periphyton plays a central role in primary production nutrient cycling lakes but constitutes complex community composed eukaryotes prokaryotes that exhibit different responses to multiple environmental stressors with implications for projections global We analyzed enrichment, small fish their interactions eukaryotic prokaryotic periphyton structures lake mesocosms. performed 16S 18S rRNA high-throughput sequencing elucidate effect abovementioned stressors. found warming promoted periphytic alpha diversity network complexity, multi-tolerant genera becoming dominating (e.g. Spirosomaceae Azospirillaceae). Contrastingly, enrichment led reduced complexity stability, weak disruption structure. Small were major drivers changes periphyton, facilitating increasing biomarker diversity. Omnivorous grazing pressure mainly through selective zooplankton, contributing structural stability functional diversity, especially proliferation biomarkers. Nutrient counteracted positive while concerted action high TN TP concentrations accelerated negative development The co-occurrence three pressures ultimately resulted biodiversity structure weakened connectivity environment. Our study provided new insights into understanding response ecological functions freshwater change.

Language: Английский

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Farmland change at different altitudes: A global analysis of climate and anthropogenic influences

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 968, P. 178855 - 178855

Published: Feb. 20, 2025

Language: Английский

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Primary producers in freshwater ecosystem respond differently to multiple environmental stressors: a mesocosm study

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121145 - 121145

Published: Feb. 1, 2025

Language: Английский

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Multiple Stressors Simplify Freshwater Food Webs

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(3)

Published: March 1, 2025

Globally, freshwater ecosystems are threatened by multiple stressors, yet our knowledge of how they interact to affect food web structure remains scant. To address this gap, we conducted a large-scale mesocosm experiment quantify the single and combined effects three common anthropogenic stressors: warming, increased nutrient loading, insecticide pollution, on network shallow lake webs. We identified both antagonistic synergistic interactive depending whether stressors affected negative or positive feedback loops, respectively. Overall, simplified web, elongated energy transfer pathways, shifted biomass distribution from benthic more pelagic pathways. This risk regime shift clear-water state dominated submerged macrophytes turbid phytoplankton. Our novel results highlight can interactively disrupt webs, with implications for understanding managing aquatic in changing world.

Language: Английский

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Differential photosynthetic and metabolic susceptibility of Microcystis aeruginosa and Raphidocelis subcapitata to environmentally relevant levels of Diuron

Journal of Environmental Sciences, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Detecting climate-driven ecological changes in high-altitude lakes in the Sierra Nevada, California

The Holocene, Journal Year: 2024, Volume and Issue: 34(7), P. 870 - 880

Published: March 16, 2024

Over the past several decades, increasing climate instability in Sierra Nevada, California, expressed primarily as reduced winter precipitation and higher temperatures, has led to more frequent drought. High-altitude lakes this region have been characterized pristine ecosystems, but growing evidence suggests that they are responding acutely change. To address this, we analyzed diatom assemblages of two 210 Pb dated sediment cores (Gull June Lakes) from eastern Nevada with aim assessing their sensitivity timing responses change at end neoglacial (~1450 CE ~1850 CE) identifying how drivers can impact communities. The nutrient cycles both disrupted by changes thermal stratification, driven interpreted shift a Stephanodiscus corruscus dominated ecosystem minutulus dominance. In case, Lake (the deeper lake) assemblage shifted an representative well mixed conditions one stratified system before Gull response temperatures strengthened thermocline. We relate asynchronous thermocline stability basin morphology, where lake is sensitive temperatures. Further, generalized additive models (GAMs) allowed us identify onset ecological lakes, pointing termination Little Ice Age (LIA; CE), revealing acute changing climate.

Language: Английский

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Macrophyte growth forms and hydrological connectivity affect greenhouse gas concentration in small eutrophic wetlands

Aquatic Botany, Journal Year: 2023, Volume and Issue: 188, P. 103660 - 103660

Published: April 23, 2023

Language: Английский

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