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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Murphy EJ,Thorpe SE,Tarling GA,Watkins JL,Fielding S,Underwood Pdoi
10.1038/s41598-017-07205-9subject
Has Abstractpub_date
2017-07-31 00:00:00pages
6963issue
1issn
2045-2322pii
10.1038/s41598-017-07205-9journal_volume
7pub_type
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