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Related Experiment Video

Updated: May 24, 2025

Protocol for Acute and Chronic Ecotoxicity Testing of the Turquoise Killifish Nothobranchius furzeri

Protocol for Acute and Chronic Ecotoxicity Testing of the Turquoise Killifish Nothobranchius furzeri

Published on: April 24, 2018

Multiple Stressors Simplify Freshwater Food Webs.

Peiyu Zhang¹, Huan Zhang¹, Shaopeng Wang²

¹Key Laboratory of Lake and Watershed Science for Water Security, Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Xiangxi River Ecosystem Research Station in the Three Gorges Reservoir Region, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.

Global Change Biology

|March 5, 2025

Summary

This summary is machine-generated.

Multiple stressors like warming, nutrient loading, and insecticides disrupt freshwater food webs. These interactions simplify food webs, alter energy flow, and increase the risk of ecosystem regime shifts.

Keywords:

anthropogenic stressors climate change food webs global environmental change interactive effects regime shift shallow lakes

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Behavioral Approaches to Studying Innate Stress in Zebrafish

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Area of Science:

Ecology
Environmental Science
Aquatic Ecosystems

Background:

Freshwater ecosystems face numerous anthropogenic stressors.
Understanding stressor interactions on food web structure is limited.
Common stressors include warming, nutrient loading, and pollution.

Purpose of the Study:

To investigate the combined effects of warming, nutrient loading, and insecticide pollution on shallow lake food web structure.
To quantify single and interactive stressor impacts on network properties.

Main Methods:

Large-scale mesocosm experiment simulating shallow lake conditions.
Quantification of food web network structure under different stressor combinations.
Analysis of energy transfer pathways and biomass distribution.

Main Results:

Identified antagonistic and synergistic stressor interactions affecting feedback loops.
Observed simplification of food web structure and elongated energy pathways.
Shifted biomass distribution from benthic to pelagic pathways, increasing turbid state risk.

Conclusions:

Multiple anthropogenic stressors interact to disrupt freshwater food web structure.
These disruptions can lead to ecosystem regime shifts, impacting management strategies.
Results are crucial for understanding and managing aquatic ecosystems under global change.