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dc.contributor.authorGross, Jasmin
dc.contributor.authorKonar, Brenda
dc.contributor.authorBrey, Thomas
dc.contributor.authorGrebmeier, Jacqueline M
dc.date.accessioned2021-09-21T05:51:00Z
dc.date.available2021-09-21T05:51:00Z
dc.date.issued2017
dc.identifier.issn0967-0645
dc.identifier.doi10.1016/j.dsr2.2017.04.021
dc.identifier.urihttp://hdl.handle.net/10072/408186
dc.description.abstractThe snow crab Chionoecetes opilio and Arctic lyre crab Hyas coarctatus are prominent members of the Chukchi Sea epifaunal community. A better understanding of their life history will aid in determining their role in this ecosystem in light of the changing climate and resource development. In this study, the size frequency distribution, growth, and mortality of these two crab species was examined in 2009, 2010, 2012, and 2013 to determine temporal and spatial patterns within the eastern Chukchi Sea, and to identify potential environmental drivers of the observed patterns. Temporally, the mean size of both sexes of C. opilio and H. coarctatus decreased significantly from 2009 to 2013, with the number of rare maximum sized organisms decreasing significantly to near absence in the latter two study years. Spatially, the mean size of male and female crabs of both species showed a latitudinal trend, decreasing from south to north in the investigation area. Growth of both sexes of C. opilio and H. coarctatus was linear over the sampled size range, and mortality was highest in the latter two study years. Life history features of both species related to different environmental parameters in different years, ranging from temperature, the sediment carbon to nitrogen ratio of the organic content, and sediment grain size distribution. Likely explanations for the observed temporal and spatial variability are ontogenetic migrations of mature crabs to warmer areas possibly due to cooler water temperatures in the latter two study years, or interannual fluctuations, which have been reported for C. opilio populations in other areas where successful waves of recruitment were estimated to occur in eight year intervals. Further research is suggested to determine if the spatial and temporal patterns found in this study are part of the natural variability in this system or if they are an indication of long-term trends.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherElsevier
dc.relation.ispartofpagefrom142
dc.relation.ispartofpageto155
dc.relation.ispartofjournalDeep Sea Research Part II: Topical Studies in Oceanography
dc.relation.ispartofvolume144
dc.subject.fieldofresearchGeochemistry
dc.subject.fieldofresearchOceanography
dc.subject.fieldofresearchEcology
dc.subject.fieldofresearchcode3703
dc.subject.fieldofresearchcode3708
dc.subject.fieldofresearchcode3103
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsOceanography
dc.subject.keywordsCrustacea
dc.subject.keywordsDecapoda
dc.titleSize-frequency distribution, growth, and mortality of snow crab (Chionoecetes opilio) and arctic lyre crab (Hyas coarctatus) in the Chukchi Sea from 2009 to 2013
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationGross, J; Konar, B; Brey, T; Grebmeier, JM, Size-frequency distribution, growth, and mortality of snow crab (Chionoecetes opilio) and arctic lyre crab (Hyas coarctatus) in the Chukchi Sea from 2009 to 2013, Deep Sea Research Part II: Topical Studies in Oceanography, 2017, 144, pp. 142-155
dc.date.updated2021-09-21T05:49:21Z
gro.hasfulltextNo Full Text
gro.griffith.authorGross, Jasmin


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