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Climate Change Drives a Widespread Increase in Arctic and Subarctic Marine Fish Biodiversity

Biology

Climate Change Drives a Widespread Increase in Arctic and Subarctic Marine Fish Biodiversity

A. Belgrano, C. Guillem-jorda, et al.

This groundbreaking research conducted by Andrea Belgrano, Cesc Guillem-Jorda, Ove Djupevåg, and others reveals significant changes in marine biodiversity in the Arctic, linking increasing sea temperatures to a remarkable rise in demersal fish species. Discover how climate change is transforming marine ecosystems from the North Sea to the Arctic Ocean!

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Playback language: English
Abstract
Observed range shifts of numerous species support predictions of climate change models that species will shift their distribution northward into the Arctic and sub-Arctic seas due to ocean warming. However, how this is affecting overall species richness is unclear. This study analyzes 20,670 scientific research trawls from the North Sea to the Arctic Ocean collected from 1994 to 2020, including 193 fish species. The results show a significant increase in demersal fish biodiversity in the Atlantic side of the Arctic, correlated with increasing sea bottom temperature. Species richness doubled in some Arctic regions, leading to enriched Arctic and sub-Arctic marine fauna.
Publisher
PNAS
Published On
Jan 01, 2023
Authors
Andrea Belgrano, Cesc Guillem-Jorda, Ove Djupevåg
Tags
climate change
marine biodiversity
Arctic
demersal fish
species richness
ocean warming
temperature increase

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