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Climate, Anchovy, and Sardine.

David M Checkley¹, Rebecca G Asch², Ryan R Rykaczewski³

¹Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093-0218;

Annual Review of Marine Science

|January 4, 2017

Summary

This summary is machine-generated.

Anchovy and sardine populations, vital to marine ecosystems, are limited by nitrogen supply. Climate change impacts, including warming and acidification, threaten these fish stocks.

Keywords:

change fish mixing nitrate river upwelling variability

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Area of Science:

Marine Ecology
Climate Change Biology
Fisheries Science

Background:

Anchovy and sardine have historically thrived in dynamic climates.
Current climate change presents rapid, significant environmental shifts.
These fish populations are hypothesized to be nitrogen-limited.

Purpose of the Study:

To investigate the impact of climate change on anchovy and sardine populations.
To understand the role of nitrogen supply in population dynamics.
To project future responses of these fish to environmental changes.

Main Methods:

Utilizing diverse model types to project fish population responses.
Considering climate effects on lower trophic levels and fishing impacts on higher trophic levels.
Analyzing the influence of fish-specific traits on climate change adaptation.

Main Results:

Climate change factors like warming, acidification, and deoxygenation affect distribution, phenology, and nutrient supply.
Oceanographic changes impact plankton composition, production, and habitat availability.
Acclimation, adaptation, and fishing pressures interact with climate effects.

Conclusions:

Nitrogen supply is a critical factor limiting anchovy and sardine populations.
Multiple climate change stressors pose complex threats to these commercially important fish.
Continued population monitoring and model evaluation are crucial for understanding climate change impacts.