Restricted regions of enhanced growth of Antarctic krill in the circumpolar Southern Ocean

Abstract Food webs in high-latitude oceans are dominated by relatively few species. Future ocean and sea-ice changes affecting the distribution of such species will impact the structure and functioning of whole ecosystems. Antarctic krill (Euphausia superba) is a key species in Southern Ocean food w...

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Autores principales:	Eugene J. Murphy, Sally E. Thorpe, Geraint A. Tarling, Jonathan L. Watkins, Sophie Fielding, Philip Underwood
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/907637a9931f4fd8805fbfa222896978
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spelling	oai:doaj.org-article:907637a9931f4fd8805fbfa2228969782021-12-02T16:07:45ZRestricted regions of enhanced growth of Antarctic krill in the circumpolar Southern Ocean10.1038/s41598-017-07205-92045-2322https://doaj.org/article/907637a9931f4fd8805fbfa2228969782017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07205-9https://doaj.org/toc/2045-2322Abstract Food webs in high-latitude oceans are dominated by relatively few species. Future ocean and sea-ice changes affecting the distribution of such species will impact the structure and functioning of whole ecosystems. Antarctic krill (Euphausia superba) is a key species in Southern Ocean food webs, but there is little understanding of the factors influencing its success throughout much of the ocean. The capacity of a habitat to maintain growth will be crucial and here we use an empirical relationship of growth rate to assess seasonal spatial variability. Over much of the ocean, potential for growth is limited, with three restricted oceanic regions where seasonal conditions permit high growth rates, and only a few areas around the Scotia Sea and Antarctic Peninsula suitable for growth of the largest krill (>60 mm). Our study demonstrates that projections of impacts of future change need to account for spatial and seasonal variability of key ecological processes within ocean ecosystems.Eugene J. MurphySally E. ThorpeGeraint A. TarlingJonathan L. WatkinsSophie FieldingPhilip UnderwoodNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-14 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Eugene J. Murphy Sally E. Thorpe Geraint A. Tarling Jonathan L. Watkins Sophie Fielding Philip Underwood Restricted regions of enhanced growth of Antarctic krill in the circumpolar Southern Ocean
description	Abstract Food webs in high-latitude oceans are dominated by relatively few species. Future ocean and sea-ice changes affecting the distribution of such species will impact the structure and functioning of whole ecosystems. Antarctic krill (Euphausia superba) is a key species in Southern Ocean food webs, but there is little understanding of the factors influencing its success throughout much of the ocean. The capacity of a habitat to maintain growth will be crucial and here we use an empirical relationship of growth rate to assess seasonal spatial variability. Over much of the ocean, potential for growth is limited, with three restricted oceanic regions where seasonal conditions permit high growth rates, and only a few areas around the Scotia Sea and Antarctic Peninsula suitable for growth of the largest krill (>60 mm). Our study demonstrates that projections of impacts of future change need to account for spatial and seasonal variability of key ecological processes within ocean ecosystems.
format	article
author	Eugene J. Murphy Sally E. Thorpe Geraint A. Tarling Jonathan L. Watkins Sophie Fielding Philip Underwood
author_facet	Eugene J. Murphy Sally E. Thorpe Geraint A. Tarling Jonathan L. Watkins Sophie Fielding Philip Underwood
author_sort	Eugene J. Murphy
title	Restricted regions of enhanced growth of Antarctic krill in the circumpolar Southern Ocean
title_short	Restricted regions of enhanced growth of Antarctic krill in the circumpolar Southern Ocean
title_full	Restricted regions of enhanced growth of Antarctic krill in the circumpolar Southern Ocean
title_fullStr	Restricted regions of enhanced growth of Antarctic krill in the circumpolar Southern Ocean
title_full_unstemmed	Restricted regions of enhanced growth of Antarctic krill in the circumpolar Southern Ocean
title_sort	restricted regions of enhanced growth of antarctic krill in the circumpolar southern ocean
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/907637a9931f4fd8805fbfa222896978
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Restricted regions of enhanced growth of Antarctic krill in the circumpolar Southern Ocean

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