NDLI: Polychaete diversity and distribution patterns in Canadian marine waters

Content Provider	Springer Nature Link
Author	Carr, Christina May
Copyright Year	2011
Abstract	As changes to Canada’s marine biodiversity loom and the tools for assessing biodiversity advance, it becomes increasingly important to have baseline information about a region’s species so that future comparisons can be made. The polychaetes represent a conspicuous component of benthic communities in Canadian marine waters, yet information on species diversity and distribution is available only at the local scale. This study compiles polychaete species records from Canada over the last 150 years to assess broad-scale patterns of species richness, beta diversity (partitioned into turnover and nestedness), and species distributions in the surrounding Atlantic, Arctic, and Pacific Oceans. Records indicate the presence of 1200 species belonging to 68 families, while statistical extrapolation estimated a total of 1629 species. Pacific waters have the highest richness with 791 recorded species. The eastern and western regions of the Arctic Ocean have the highest faunal similarity, but the fewest endemic species, reflecting the recent ice-free status of this basin. Species turnover is highest between Pacific and Atlantic basins, decreases with geographic proximity, and is lowest in comparisons with Hudson Bay. Similar patterns of turnover between temperate and (sub)Arctic basins suggest that both Atlantic and Pacific faunas played an important role in Arctic recolonization following deglaciation. Despite the vast geographic area, nearly 13% of species are reported in all three oceans; however, many of these taxa likely represent species complexes. These results highlight the need for more detailed examination of many species with broad distributions and suggest that diversity in Canada is currently underestimated.
Starting Page	93
Ending Page	107
Page Count	15
File Format	PDF
ISSN	18671616
Journal	Marine Biodiversity
Volume Number	42
Issue Number	2
e-ISSN	18671624
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-06-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polychaetes Canada Species diversity Biogeography Species checklist Freshwater & Marine Ecology Biodiversity Plant Systematics/Taxonomy/Biogeography Animal Systematics/Taxonomy/Biogeography
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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