Area-specific temporal changes of species composition and species-specific range shifts in rocky-shore mollusks associated with warming Kuroshio Current |
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| Authors: | Takeo Kurihara Hideki Takami Takeharu Kosuge Susumu Chiba Masatsugu Iseda Takenori Sasaki |
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| Institution: | (1) Seikai National Fisheries Research Institute, 1551-8 Taira-machi, Nagasaki 851-2213, Japan;(2) Tohoku National Fisheries Research Institute, Shiogama Miyagi, 985-0001, Japan;(3) Okinawa Regional Research Center, Tokai University, 870-277 Uehara, Yaeyama Okinawa, 907-1541, Japan;(4) Department of Aquatic Bioscience, Tokyo University of Agriculture, Yasaka 198, Abashiri Hokkaido, 099-2493, Japan;(5) Fisheries Bureau, Agriculture, Forestry and Fisheries Department, 1-1 Komatsubaradori, Wakayama Wakayama Prefecture, 640-8585, Japan;(6) The University Museum, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan |
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| Abstract: | Increases of low-latitude species in various sea areas and poleward shifts of ranges of many species have been reported and
linked to warming environments. To examine the generality of these trends for mollusks, we conducted 7 quadrat surveys during
1978–2006 on Pacific rocky shores in Japan (26.6–45.0°N). Results showed that the dominance of southern species increased
on 11 of the 15 shores in a southern, warming sea area but on only 1 of the 6 shores in a northern area with no warming trend.
The latitudes of species ranges increased on average but showed large interspecific variations which showed a weak, positive
correlation with interspecific taxonomic distance. The differences of these results from the previously reported trends are
discussed in relation to the unique current patterns in our study area and the phylogenetic constraints of species-specific
responses to a warming environment. |
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