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Around one third of current Arctic Ocean primary production sustained by rivers and coastal erosion

Earth Sciences

Around one third of current Arctic Ocean primary production sustained by rivers and coastal erosion

J. Terhaar, R. Lauerwald, et al.

This study by Jens Terhaar, Ronny Lauerwald, Pierre Regnier, Nicolas Gruber, and Laurent Bopp reveals how land-derived nutrients significantly impact net primary production (NPP) in the Arctic Ocean, accounting for up to 51% of the current NPP due to enhanced nutrient recycling. Discover the factors shaping the future of Arctic ecosystems!

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Playback language: English
Abstract
Net primary production (NPP) in the Arctic Ocean is a complex interplay of light and nutrients. This study investigates the role of land-derived nutrients from rivers and coastal erosion on Arctic Ocean NPP. Using observations from six major rivers and coastal erosion rates, a pan-Arctic estimate of land input of carbon and nutrients was constructed. An ocean-biogeochemical model estimated that this input fuels 28–51% of the current annual Arctic Ocean NPP, primarily due to efficient nutrient recycling on Arctic shelves. These findings suggest that land nutrient input is a key process affecting the future evolution of Arctic Ocean NPP.
Publisher
Nature Communications
Published On
Jan 08, 2021
Authors
Jens Terhaar, Ronny Lauerwald, Pierre Regnier, Nicolas Gruber, Laurent Bopp
Tags
Arctic Ocean
net primary production
land-derived nutrients
coastal erosion
nutrient recycling
carbon input
biogeochemical model

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