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Related Experiment Video

Updated: May 13, 2026

Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter

Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter

Published on: March 12, 2013

Top-Down and Bottom-Up Effects on Insect Herbivores Under Global Change-A Meta-Analysis.

Mayra C Vidal¹, Mattheau S Comerford^1,2, Billie Maguire¹

¹Department of Biology, University of Massachusetts Boston, Boston, Massachusetts, USA.

Ecology Letters

|May 12, 2026

Summary

Global environmental change impacts insect herbivores through complex food webs. This meta-analysis reveals that generalist herbivores are more vulnerable, and effects vary by system, highlighting the need for nuanced conservation strategies.

Keywords:

Anthropocene climate change diet breadth disturbance environmental stressor trophic interaction

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Area of Science:

Ecology
Environmental Science
Conservation Biology

Background:

Global environmental change is causing insect declines, but the mechanisms are unclear, especially regarding trophic interactions.
Studies often examine bottom-up (host plant) and top-down (natural enemy) effects separately, lacking a holistic view of global change impacts on insect herbivores.

Conclusions:

Trophic interactions and context-specific dynamics are crucial for predicting ecological responses to environmental change.
A comprehensive understanding requires integrating both bottom-up and top-down effects.
Findings have significant implications for insect biodiversity conservation in the Anthropocene.