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Identifying Pelagic Habitat Hotspots of Neon Flying Squid in the Temperate Waters of the Central North Pacific

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Title: Identifying Pelagic Habitat Hotspots of Neon Flying Squid in the Temperate Waters of the Central North Pacific
Authors: Alabia, Irene D. Browse this author
Saitoh, Sei-Ichi Browse this author →KAKEN DB
Mugo, Robinson Browse this author
Igarashi, Hiromichi Browse this author
Ishikawa, Yoichi Browse this author
Usui, Norihisa Browse this author →KAKEN DB
Kamachi, Masafumi Browse this author →KAKEN DB
Awaji, Toshiyuki Browse this author →KAKEN DB
Seito, Masaki Browse this author
Issue Date: 16-Nov-2015
Publisher: Public Library of Science
Journal Title: PLoS ONE
Volume: 10
Issue: 11
Start Page: e0142885
Publisher DOI: 10.1371/journal.pone.0142885
Abstract: We identified the pelagic habitat hotspots of the neon flying squid (Ommastrephes bartramii) in the central North Pacific from May to July and characterized the spatial patterns of squid aggregations in relation to oceanographic features such as mesoscale oceanic eddies and the Transition Zone Chlorophyll-a Front (TZCF). The data used for the habitat model construction and analyses were squid fishery information, remotely-sensed and numerical model-derived environmental data from May to July 1999-2010. Squid habitat hotspots were deduced from the monthly Maximum Entropy (MaxEnt) models and were identified as regions of persistent high suitable habitat across the 12-year period. The distribution of predicted squid habitat hotspots in central North Pacific revealed interesting spatial and temporal patterns likely linked with the presence and dynamics of oceanographic features in squid's putative foraging grounds from late spring to summer. From May to June, the inferred patches of squid habitat hotspots developed within the Kuroshio-Oyashio transition zone (KOTZ; 37-40 degrees N) and further expanded north towards the subarctic frontal zone (SAFZ; 40-44 degrees N) in July. The squid habitat hotspots within the KOTZ and areas west of the dateline (160 degrees W-180 degrees) were likely influenced and associated with the highly dynamic and transient oceanic eddies and could possibly account for lower squid suitable habitat persistence obtained from these regions. However, predicted squid habitat hotspots located in regions east of the dateline (180 degrees-160 degrees W) from June to July, showed predominantly higher squid habitat persistence presumably due to their proximity to the mean position of the seasonally-shifting TZCF and consequent utilization of the highly productive waters of the SAFZ.
Type: article
Appears in Collections:北極域研究センター (Arctic Research Center) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Alabia, Irene D.

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