Similarity of rocky intertidal assemblages along the Pacific coast of Japan : effects of spatial scales and geographic distance

Nakaoka, M.; Ito, N.; Yamamoto, T.; Okuda, T.; Noda, T.

Similarity of rocky intertidal assemblages along the Pacific coast of Japan : effects of spatial scales and geographic distance

Nakaoka, M.; Ito, N.; Yamamoto, T. et al.

Ecological Research, 2006, 21(3), 425-435

Permalink : https://hdl.handle.net/2115/13476

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アクセス権	open access
URI	https://hdl.handle.net/2115/13476
タイトル	Similarity of rocky intertidal assemblages along the Pacific coast of Japan : effects of spatial scales and geographic distance
著者	Nakaoka, M. ; Ito, N. ; Yamamoto, T. ; Okuda, T. ; Noda, T.
著者名 Nakaoka, M.
著者名 Ito, N.
著者名 Yamamoto, T.
著者名 Okuda, T.
e-Rad_Researcher 90240639 著者名 Noda, T. 野田, 隆史
言語	英語
キーワード	Geographic distance
	Hierarchical design
	Marine benthic organisms
	Multivariate analyses
	Pacific coast of Japan
発行日	2006-05
出版者	Springer
収録物名	Ecological Research
巻(号)	21(3)
ページ	425-435
抄録	Factors and processes affecting community structures operate at various spatial and temporal scales. We analyzed how similarities of rocky intertidal assemblages vary at different spatial scales using a nested, hierarchical sampling design. Intertidal assemblages consisting of algae, sessile animals, and mobile animals were censused on five rock walls at each of five shores chosen within each of six regions along the Pacific coast of Japan, encompassing 1,800 km of coastlines. Based on this sampling design, similarities in assemblages were calculated using both qualitative (presence/absence) and quantitative (percent cover and density) data, and compared at three spatial levels: (1) rock level (the finest spatial scale, encompassing several to hundreds of meters), (2) shore level (the intermediate spatial scale, encompassing several to tens of kilometers), and (3) region level (the broadest spatial scale, encompassing hundreds to thousands of kilometers). Cluster analysis showed that assemblages were categorized into distinct regional groups except for the two southern regions, but they did not separate clearly from each shore. A nested analysis of similarities revealed significant variation in similarities among regions and among shores within each region, with the former showing greater variation. Similarity was negatively correlated with geographic distance at the regional level but not at the shore or the rock levels. At the regional level, similarity decreased more rapidly with distance for mobile animals than sessile organisms. The analyses highlighted the importance of broad-scale abiotic/biotic factors such as oceanic current conditions and biogeographic factors in determining observed patterns in similarity of rocky intertidal assemblages.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	The original publication is available at www.springerlink.com
PISSN	0912-3814
EISSN	1440-1703
関連情報	URI http://www.springerlink.com
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s11284-005-0138-6