Effects of climate and land-use changes on fish catches across lakes at a global scale

Nature Communications
By: , and 

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Abstract

Globally, our knowledge on lake fisheries is still limited despite their importance to food security and livelihoods. Here we show that fish catches can respond either positively or negatively to climate and land-use changes, by analyzing time-series data (1970–2014) for 31 lakes across five continents. We find that effects of a climate or land-use driver (e.g., air temperature) on lake environment could be relatively consistent in directions, but consequential changes in a lake-environmental factor (e.g., water temperature) could result in either increases or decreases in fish catch in a given lake. A subsequent correlation analysis indicates that reductions in fish catch was less likely to occur in response to potential climate and land-use changes if a lake is located in a region with greater access to clean water. This finding suggests that adequate investments for water-quality protection and water-use efficiency can provide additional benefits to lake fisheries and food security.

Publication type Article
Publication Subtype Journal Article
Title Effects of climate and land-use changes on fish catches across lakes at a global scale
Series title Nature Communications
DOI 10.1038/s41467-020-14624-2
Volume 11
Year Published 2020
Language English
Publisher Nature Publications
Contributing office(s) Coop Res Unit Atlanta
Description 2526, 14 p.
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