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Temperature threshold as a biogeographic barrier in northern Indian Ocean macroalgae
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Schils, Tom and Wilson, Simon C.. (2006) Temperature threshold as a biogeographic barrier in northern Indian Ocean macroalgae. Journal of Phycology , Vol.42 (No.4). pp. 749-756. ISSN 0022-3646
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Official URL: http://dx.doi.org/10.1111/j.1529-8817.2006.00242.x
Abstract
The most eastern point of the Arabian Peninsula, Ras Al Hadd, marks the boundary between the Arabian Sea and the Gulf of Oman. This geographic landmark coincides with an abrupt floristic turnover, probably one of the sharpest biotic transitions known in marine biogeography. The floras of different Arabian localities across this floristic break were compared using macrophyte distribution data throughout the Indian Ocean and seasonal sea-surface temperature (SST) data. The localities from the Arabian Gulf and Gulf of Oman differ significantly from those of the Arabian Sea based on their species richness, species composition, average distribution range per species, general temperature affinity of the composing species, and seasonal temperature data of the coastal waters. Pooling the temperature data into two groups (SST3avg, average SST of the three warmest seasons; SSTmin, minimum of the seasonal SSTs) revealed a temperature limit at 28 degrees C using both the temperature affinity data of the floras and the seasonal temperatures recorded for the specific Arabian localities, which significantly separates the Arabian Sea from localities of both Gulfs. Finally, SST data of the Indian Ocean were analyzed using this upper temperature threshold of macrophytes at 28 degrees C and the lower temperature limit of corals at 25 degrees C, revealing general macrophyte diversity patterns.
| Item Type: | Journal Article |
|---|---|
| Subjects: | S Agriculture > SB Plant culture Q Science > QH Natural history > QH301 Biology |
| Divisions: | Faculty of Science > Life Sciences (2010- ) > Biological Sciences ( -2010) Faculty of Science > Life Sciences (2010- ) |
| Journal or Publication Title: | Journal of Phycology |
| Publisher: | Wiley-Blackwell Publishing, Inc. |
| ISSN: | 0022-3646 |
| Date: | August 2006 |
| Volume: | Vol.42 |
| Number: | No.4 |
| Number of Pages: | 8 |
| Page Range: | pp. 749-756 |
| Identification Number: | 10.1111/j.1529-8817.2006.00242.x |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Funder: | Fonds Wetenschappelijk Onderzoek (FWO) |
| Grant number: | FWO Research Project 3G014205 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/33258 |
Data sourced from Thomson Reuters' Web of Knowledge
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