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• W2326948820 endingPage "280" @default.
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• W2326948820 abstract "Research Article| July 01, 2014 ALPHA AND BETA DIVERSITY OF FORAMINIFERA THAT ENCRUST THE ANTARCTIC SCALLOP ADAMUSSIUM COLBECKI: ECOLOGICAL CONNECTIVITY AMONG SHELLS AND BETWEEN SITES Dylan Radford; Dylan Radford 1Department of Geology, University of Georgia, Athens, GA 30602, USA Search for other works by this author on: GSW Google Scholar Sally E. Walker; Sally E. Walker 3 1Department of Geology, University of Georgia, Athens, GA 30602, USA 3Correspondence author. E-mail: swalker@gly.uga.edu Search for other works by this author on: GSW Google Scholar Samuel S. Bowser Samuel S. Bowser 2Wadsworth Center, New York Department of Health, Albany, NY 12201, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Dylan Radford 1Department of Geology, University of Georgia, Athens, GA 30602, USA Sally E. Walker 3 1Department of Geology, University of Georgia, Athens, GA 30602, USA Samuel S. Bowser 2Wadsworth Center, New York Department of Health, Albany, NY 12201, USA 3Correspondence author. E-mail: swalker@gly.uga.edu Publisher: Cushman Foundation for Foraminiferal Research Received: 06 Jul 2013 Accepted: 08 Dec 2013 First Online: 03 Mar 2017 Online ISSN: 1943-264X Print ISSN: 0096-1191 © 2014 Cushman Foundation for Foraminiferal Research Journal of Foraminiferal Research (2014) 44 (3): 255–280. https://doi.org/10.2113/gsjfr.44.3.255 Article history Received: 06 Jul 2013 Accepted: 08 Dec 2013 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Dylan Radford, Sally E. Walker, Samuel S. Bowser; ALPHA AND BETA DIVERSITY OF FORAMINIFERA THAT ENCRUST THE ANTARCTIC SCALLOP ADAMUSSIUM COLBECKI: ECOLOGICAL CONNECTIVITY AMONG SHELLS AND BETWEEN SITES. Journal of Foraminiferal Research 2014;; 44 (3): 255–280. doi: https://doi.org/10.2113/gsjfr.44.3.255 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyJournal of Foraminiferal Research Search Advanced Search Abstract Benthic foraminifera are ubiquitous marine organisms in Antarctica, but little is known about their ecology despite their importance as climate-change proxies. A fundamental question remains unanswered: is foraminiferal diversity highly localized and similar to reports for Antarctic benthic invertebrates? If so, high endemism would result driven by dispersal limitation with little connectivity among sites. To answer this question, the composition, abundance, spatial distribution and alpha (α) and beta (β) diversity of foraminiferal species that encrust living shells of the Antarctic scallop Adamussium colbecki were compared within and between two sites located 30-km apart in McMurdo Sound, Ross Sea, Antarctica: Bay of Sails (BOS), an open coastal region with annual sea-ice cover, and Explorers Cove (EC), a protected embayment with multiannual sea-ice cover.Foraminiferal community structure differed between the sites, generated by variations in species abundance, turnover of rare species, and heterogeneity in species composition between top and bottom valves. Foraminifera were significantly more common on the scallop’s auricles, perhaps driven by nutrients generated by the scallop. Calcareous taxa were significantly more abundant at EC despite lower seawater pH, while agglutinated taxa were significantly more abundant at BOS. Alpha diversity (species richness, Shannon H, eH) was higher at BOS than at EC and is similar to deep-sea diversity reported for Caribbean encrusting foraminifera. Based on Shannon H, foraminifera at EC may represent a stressed community dominated by Cibicides antarcticus, while those at BOS may represent a transitional community. Within-site β-diversity was high, spurred by the turnover of rare species between top and bottom valves, which acted as separate microhabitats. Higher β-diversity at BOS suggests that foraminiferal dispersal and recruitment were more localized than at EC. Additive partitioning revealed that encrusting diversity was mostly held at the local level, and that BOS and EC have high connectivity, similar to deep-sea communities. The Antarctic endemicity of these protists is questionable, and is in stark contrast to Antarctic invertebrates with high within- and between-site diversity. Therefore, Antarctic encrusting foraminifera appear to be influenced primarily by niche-based processes, rather than dispersal limitation. Indeed, habitat islands, such as carbonate shells, are essential for generating Antarctic diversity, and are integral for the conservation of Antarctica’s unique polar ecosystem. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
• W2326948820 created "2016-06-24" @default.
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• W2326948820 date "2014-07-01" @default.
• W2326948820 modified "2023-09-29" @default.
• W2326948820 title "ALPHA AND BETA DIVERSITY OF FORAMINIFERA THAT ENCRUST THE ANTARCTIC SCALLOP ADAMUSSIUM COLBECKI: ECOLOGICAL CONNECTIVITY AMONG SHELLS AND BETWEEN SITES" @default.
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