Earlier collapse of Anthropocene ecosystems driven by multiple faster and noisier drivers

Nature Sustainability, Journal Year: 2023, Volume and Issue: 6(11), P. 1331 - 1342

Published: June 22, 2023

A major concern for the world’s ecosystems is possibility of collapse, where landscapes and societies they support change abruptly. Accelerating stress levels, increasing frequencies extreme events strengthening intersystem connections suggest that conventional modelling approaches based on incremental changes in a single may provide poor estimates impact climate human activities ecosystems. We conduct experiments four models simulate abrupt Chilika lagoon fishery, Easter Island community, forest dieback lake water quality—representing with range anthropogenic interactions. Collapses occur sooner under levels primary but additional stresses and/or inclusion noise all bring collapses substantially closer to today by ~38–81%. discuss implications further research need humanity be vigilant signs are degrading even more rapidly than previously thought. Current models, stress, have limited ability anticipate ecosystem due activities. Experiments simulating interactions show how much earlier can happen.

Language: Английский

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Recent advancement in water quality indicators for eutrophication in global freshwater lakes

Environmental Research Letters, Journal Year: 2023, Volume and Issue: 18(6), P. 063004 - 063004

Published: April 26, 2023

Abstract Eutrophication is a major global concern in lakes, caused by excessive nutrient loadings (nitrogen and phosphorus) from human activities likely exacerbated climate change. Present use of indicators to monitor assess lake eutrophication restricted water quality constituents (e.g. total phosphorus, nitrogen) does not necessarily represent environmental changes the anthropogenic influences within lake’s drainage basin. Nutrients interact multiple ways with climate, basin conditions socio-economic development, point-source, diffuse source pollutants), systems. It therefore essential account for complex feedback mechanisms non-linear interactions that exist between nutrients ecosystems assessments. However, lack set holistic understanding challenges such assessments, addition limited monitoring data available. In this review, we synthesize main freshwater basins only include but also sources, biogeochemical pathways responses emissions. We develop new causal network (i.e. links indicators) using DPSIR (drivers-pressure-state-impact-response) framework highlights interrelationships among provides perspective dynamics basins. further review 30 key drivers pressures seven cross-cutting themes: (i) hydro-climatology, (ii) socio-economy, (iii) land use, (iv) characteristics, (v) crop farming livestock, (vi) hydrology management, (vii) fishing aquaculture. This study indicates need more comprehensive systems, guide expansion networks, support integrated assessments manage eutrophication. Finally, proposed can be used managers decision-makers realistic targets sustainable management achieve clean all, line Sustainable Development Goal 6.

Language: Английский

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A new technique for quantifying algal bloom, floating/emergent and submerged vegetation in eutrophic shallow lakes using Landsat imagery

Remote Sensing of Environment, Journal Year: 2023, Volume and Issue: 287, P. 113480 - 113480

Published: Feb. 1, 2023

Language: Английский

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Nitrogen and phosphorus trends in lake sediments of China may diverge

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: March 26, 2024

Abstract The brief history of monitoring nutrient levels in Chinese lake waters limits our understanding the causes and long-term trends their eutrophication constrains effective management. We therefore synthesize data from lakes China to reveal historical changes project future 2100 using models. Here we show that average concentrations nitrogen phosphorus sediments have increased by 267% 202%, respectively since 1850. In model projections, 2030–2100, studied may decrease, for example, 87% southern districts 19% northern districts. However, will continue increase an 25% Eastern Plain, Yunnan–Guizhou Plateau, Xinjiang. Based on this differentiation, suggest management should be carried out at district level help develop rational sustainable environmental strategies.

Language: Английский

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The dominant role of human activity intensity in spatial pattern of ecosystem health in the Poyang Lake ecological economic zone

Ecological Indicators, Journal Year: 2024, Volume and Issue: 166, P. 112347 - 112347

Published: July 8, 2024

Language: Английский

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Human-induced N-P imbalances will aggravate GHG emissions from lakes and reservoirs under persisting eutrophication

Water Research, Journal Year: 2025, Volume and Issue: 276, P. 123240 - 123240

Published: Feb. 2, 2025

Language: Английский

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Responses to extreme drought in wintering waterbirds: a multi-species approach

Frontiers in Zoology, Journal Year: 2025, Volume and Issue: 22(1)

Published: Feb. 10, 2025

Climate change and anthropogenic activities are accelerating environmental changes, challenging wild animals' survival. Behavioral plasticity, such as adjusting habitat selection foraging activity, is a key mechanism for responding to rapid changes in the Anthropocene era. However, this shift may expose animals new challenges. Moreover, not all behavioral plasticity adaptive, evidenced by ecological traps. This study focuses on Poyang Lake, Ramsar wetland critical wintering ground waterbirds East Asian-Australasian Flyway. Historically, migratory patterns of were synchronized with plant life cycle. recent hydrological regime have diminished suitable habitats food resources, thereby posing significant conservation challenges waterbirds. Utilizing multiyear satellite tracking data, we examined variations home range behaviors four herbivorous waterbird species between natural artificial wetlands Lake under different conditions. Our results reveal differences area movement speed among across years. All demonstrated marked increase their use unfavorable Specifically, Greater White-fronted Goose (Anser albifrons) shifted its distribution during drought years while favoring normal conditions, indicating stress-induced adaptation. In contrast, Bean (A. fabalis) Swan cygnoid) displayed greater plasticity. Notably, Siberian Crane (Leucogeranus leucogeranus) increasingly used wetlands, likely due human protection, raising concerns about potential Additionally, generally exhibited higher speeds behavior suggests maladaptation more dispersed distribution. underscored role supporting drought, though elevated observed these suggest maladaptation. Species-specific responses raise traps if fail meet needs. To ensure long-term conservation, efforts should focus preserving enhancing quality habitats. Future research prioritize monitoring guide management address species-specific needs face climate degradation.

Language: Английский

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Climate change amplifies the risk of potentially toxigenic cyanobacteria

Global Change Biology, Journal Year: 2023, Volume and Issue: 29(18), P. 5240 - 5249

Published: July 6, 2023

Abstract Cyanobacterial blooms pose a significant threat to water security, with anthropogenic forcing being implicated as key driver behind the recent upsurge and global expansion of cyanobacteria in modern times. The potential effects land‐use alterations climate change can lead complicated, less‐predictable scenarios cyanobacterial management, especially when forecasting toxin risks. There is growing need for further investigations into specific stressors that stimulate toxins, well resolving uncertainty surrounding historical or contemporary nature cyanobacterial‐associated To address this gap, we employed paleolimnological approach reconstruct abundance microcystin‐producing temperate lakes situated along human impact gradient. We identified breakpoints (i.e., points abrupt change) these time series examined landscape climatic properties on their occurrence. Our findings indicate subject greater influence exhibited an earlier onset biomass by 40 years compared less‐impacted lakes, emerging dominant predictor. Moreover, increased both high‐ low‐impact around 1980s, warming primary driver. chronicle importance increasing risk toxigenic freshwater resources.

Language: Английский

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Assessing lake ecosystem health from disturbed anthropogenic landscapes: Spatial patterns and driving mechanisms

Ecological Indicators, Journal Year: 2023, Volume and Issue: 147, P. 110007 - 110007

Published: Feb. 12, 2023

Freshwater lake ecosystems face unprecedented challenges with escalating anthropogenic pressure worldwide. An improved understanding of how environmental and socioeconomic factors impact health is crucial for strategic conservation management. Here, we compiled data from 85 lakes China's most densely populated regions proposed an integrated index to examine spatial patterns ecosystem health. We further evaluated 16 drivers conditions drive these changes by using the Bayesian hierarchical model Gradient boosting decision tree models. Our results suggest can provide a comprehensive picture quality systems perspective combining water bodies lakeshore zones. find that degradation shows clear heterogeneity given common forcings associated climate land-use practices within this region. reveal non-linear relationships between social economic (distance, population, food production, gross domestic product [GDP], etc.) ecology, distance city center was predominant factor influenced system among multiple drivers. This study contributes differences driving mechanisms ecological in areas high human activity as basis identifying conflicts recommendations improve state ecosystems.

Language: Английский

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Human activities facilitated the decline of forest ecosystem in East Asia after 5000 a BP

Earth-Science Reviews, Journal Year: 2023, Volume and Issue: 245, P. 104552 - 104552

Published: Sept. 3, 2023

Language: Английский

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