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Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging
Published on: April 18, 2025
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Spatial patterns and predictors of trophic control in marine ecosystems
Daniel G Boyce1,2, Kenneth T Frank2, Boris Worm3
1Department of Biology, Queen's University, Kingston, ON, Canada, K7L 3N6.
Ecology Letters
|August 8, 2015
Summary
Temperature significantly influences marine ecosystem structure by controlling trophic dynamics. This finding, based on 52 studies, highlights temperature as a key predictor of ecological balance.
Area of Science:
- Marine Ecology
- Ecosystem Dynamics
- Trophic Control
Background:
- Understanding the drivers of ecosystem structure (resource availability vs. consumer pressure) is a fundamental ecological question.
- Existing hypotheses lack a unified explanation for the balance between bottom-up and top-down control in ecosystems.
Purpose of the Study:
- To identify common predictors of trophic control in marine ecosystems.
- To synthesize findings from observational field studies to explain ecosystem structure.
Main Methods:
- Synthetic analysis of 52 observational field studies from marine ecosystems in the Northern Hemisphere (1951-2014).
- Spatial regression analysis of 45 candidate variables to identify dominant predictors of trophic control.
Main Results:
- Temperature was identified as the dominant predictor of trophic control, with significant unimodal effects (r(2) = 0.32; P < 0.0001).
- Temperature influences trophic control both directly and indirectly via primary production quality and turnover, biodiversity, and omnivory.
Conclusions:
- Temperature is an overarching determinant of marine ecosystem trophic dynamics.
- Variations in ocean temperature will directly and indirectly impact the trophic structure of marine ecosystems.
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