Comparison of seastar (Asteroidea) fauna across island groups of the Scotia Arc

Primary tabs

Kim, S., & Thurber, A. (2007). Comparison of seastar (Asteroidea) fauna across island groups of the Scotia Arc. Polar Biology, 30(4), 415-425. doi:10.1007/s00300-006-0198-2
Metadata
TitleComparison of seastar (Asteroidea) fauna across island groups of the Scotia Arc
AuthorsS. Kim, A. Thurber
AbstractThe Antarctic shelf fauna is isolated from other continental shelf faunas both physically by distance, and oceanographically by the Antarctic circumpolar current (ACC). To elucidate the relative importance of these two isolating mechanisms, we used the seastar fauna of the south-Atlantic sub-Antarctic islands to address the hypothesis that the ACC is dominant in controlling the distribution pattern of Antarctic fauna. We expected that seastar faunas from islands on the high latitude side of the ACC would show more similarities to each other than to faunas from islands on the low latitude side. The alternative isolation by distance model predicted that the island furthest from others would have the most unique fauna. For shelf-depth (<500 m) Asteroidea of the Scotia Arc region, assemblages were more similar between islands on each side of the ACC barrier than islands that were closer together, and this pattern was caused by differences in abundance of a few ubiquitous species. © 2006 Springer-Verlag.
JournalPolar Biology
Date2007
Volume30
Issue4
Start page415
End page425
ISSN07224060
SubjectsAntarctic Circumpolar Wave, benthos, comparative study, continental shelf, echinoderm, island arc, island biogeography, isolation effect, polar front, population distribution, Antarctica, Scotia Arc, Asterias
NoteCited By (since 1996):3 Invertebrates

Bookmark

Bookmarks: