2010 Fiscal Year Final Research Report

Mechanisms for extending the distribution of subtropical Sargassum species

Research Project

Project/Area Number	21780192
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	General fisheries
Research Institution	(独)水産総合研究センター (2010) Fisheries Research Agency (2009)
Principal Investigator	KOUSUKE Yatsuya (独)水産総合研究センター, 西海区水産研究所・資源生産部, 研究員 (80470136)
Project Period (FY)	2009 – 2010
Keywords	亜熱帯性ホンダワラ類 / 温帯性ホンダワラ類 / 食害 / 付着器の再生能力 / 藻場 / 磯焼け
Research Abstract	The aim of this study is to elucidate mechanisms for extending the distribution of subtropical Sargassum species along the western coast of Kyusyu island. Results obtained in this study indicated that subtropical Sargassum species had a better ability to regenerate from a grazed holdfast, and were interior in light competition than temperate Sargassum species. Removal of temperate Sargassum comuunity by higher grazing pressure should be necessary to extend the distribution of subtropical Sargassum species.