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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
Biomass changes and trophic amplification of plankton in a warmer ocean
Global Change Biology, Volume 20, No. 7, Year 2014
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Description
Ocean warming can modify the ecophysiology and distribution of marine organisms, and relationships between species, with nonlinear interactions between ecosystem components potentially resulting in trophic amplification. Trophic amplification (or attenuation) describe the propagation of a hydroclimatic signal up the food web, causing magnification (or depression) of biomass values along one or more trophic pathways. We have employed 3-D coupled physical-biogeochemical models to explore ecosystem responses to climate change with a focus on trophic amplification. The response of phytoplankton and zooplankton to global climate-change projections, carried out with the IPSL Earth System Model by the end of the century, is analysed at global and regional basis, including European seas (NE Atlantic, Barents Sea, Baltic Sea, Black Sea, Bay of Biscay, Adriatic Sea, Aegean Sea) and the Eastern Boundary Upwelling System (Benguela). Results indicate that globally and in Atlantic Margin and North Sea, increased ocean stratification causes primary production and zooplankton biomass to decrease in response to a warming climate, whilst in the Barents, Baltic and Black Seas, primary production and zooplankton biomass increase. Projected warming characterized by an increase in sea surface temperature of 2.29 ± 0.05 °C leads to a reduction in zooplankton and phytoplankton biomasses of 11% and 6%, respectively. This suggests negative amplification of climate driven modifications of trophic level biomass through bottom-up control, leading to a reduced capacity of oceans to regulate climate through the biological carbon pump. Simulations suggest negative amplification is the dominant response across 47% of the ocean surface and prevails in the tropical oceans; whilst positive trophic amplification prevails in the Arctic and Antarctic oceans. Trophic attenuation is projected in temperate seas. Uncertainties in ocean plankton projections, associated to the use of single global and regional models, imply the need for caution when extending these considerations into higher trophic levels. © 2014 John Wiley & Sons Ltd.
Authors & Co-Authors
Chust, Guillem
Spain, Derio
Azti Fundazioa
Allen, Julian Icarus
United Kingdom, Plymouth
Plymouth Marine Laboratory
Bopp, Laurent
France, Gif-sur-yvette
Laboratoire Des Sciences du Climat et de L'environnement
Schrum, Corinna
Norway, Bergen
Universitetet I Bergen
Holt, Jason T.
United Kingdom, Liverpool
National Oceanography Centre
Tsiaras, Kostas
Greece, Anavyssos
Hellenic Centre for Marine Research
Zavatarelli, Marco
Italy, Bologna
Alma Mater Studiorum Università Di Bologna
Chifflet, Marina
Spain, Derio
Azti Fundazioa
Cannaby, Heather
United Kingdom, Liverpool
National Oceanography Centre
Turkey, Ankara
Middle East Technical University Metu
Dadou, Isabelle C.
France, Toulouse
Laboratoire D'etudes en Géophysique et Océanographie Spatiales
Daewel, Ute
Norway, Bergen
Universitetet I Bergen
Norway, Bergen
Nansen Environmental and Remote Sensing Center
Wakelin, Sarah L.
United Kingdom, Liverpool
National Oceanography Centre
Machú, Éric
France, Plouzane
Ird Centre de Bretagne
Pushpadas, Dhanya
Norway, Bergen
Universitetet I Bergen
Butenschön, Momme
United Kingdom, Plymouth
Plymouth Marine Laboratory
Artioli, Yuri
United Kingdom, Plymouth
Plymouth Marine Laboratory
Petihakis, George
Greece, Anavyssos
Hellenic Centre for Marine Research
Smith, C.
Greece, Anavyssos
Hellenic Centre for Marine Research
Garçon, Véronique C.
France, Toulouse
Laboratoire D'etudes en Géophysique et Océanographie Spatiales
Goubanova, Katerina
France, Toulouse
Laboratoire D'etudes en Géophysique et Océanographie Spatiales
Le Vu, Briac
France, Toulouse
Laboratoire D'etudes en Géophysique et Océanographie Spatiales
Fach, Bettina A.
Turkey, Ankara
Middle East Technical University Metu
Salihoğlu, Barış
Turkey, Ankara
Middle East Technical University Metu
Clementi, Emanuela
Italy, Bologna
Alma Mater Studiorum Università Di Bologna
Italy, Rome
Istituto Nazionale Di Geofisica e Vulcanologia, Rome
Irigoien, Xabier
Spain, Derio
Azti Fundazioa
Saudi Arabia, Thuwal
King Abdullah University of Science and Technology
Statistics
Citations: 179
Authors: 25
Affiliations: 13
Identifiers
Doi:
10.1111/gcb.12562
ISSN:
13541013
e-ISSN:
13652486
Research Areas
Environmental
Food Security
Mental Health