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September 18, 2025Open Access

Trophic Reorganization and Energy Deficit: A Multispecies Size-Spectrum Model of the Grand Banks

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Authors

RDRoberto DíazJRJonathan C. P. ReumTETyler D. Eddy

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Overview

This multispecies model reveals differing impacts of cod and capelin on ecosystem control and energy dynamics.

Key Points

  • Top-down control by Atlantic cod led to biomass responses three times greater than forage fish reductions.
  • Capelin and sand lance depletion caused modest population-level changes but resulted in substantial community-level biomass decline.
  • Ecosystem structure varies significantly depending on the species involved and the analysis scale.
  • Understanding these dynamics supports an ecosystem-based approach to fisheries management.

Cite This Study

Díaz et al. (2025) studied this question.

synapsesocial.com/papers/68d462db31b076d99fa62938https://doi.org/10.32942/x22d24
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Variable forage fish biomass and phenology influence marine predator diet, foraging behavior, and species interactions in coastal Newfoundland, Canada2024 · 5 citations
  2. 2Decadal changes in biomass and distribution of key fisheries species on Newfoundland’s Grand Banks2024 · 3 citations
  3. 3Repeated large declines in the Barents Sea capelin population are associated with different ecosystem conditions2024 · 3 citations
  4. 4Comparing capelin abundance estimates from predator diet data and an acoustic survey2025
  5. 5Absence of predator control increases cod extirpation risk in a Northwest Atlantic ecosystem: inference from multispecies modelling2024