クメ　マナブ   Manabu Kume   久米　学    所属   石巻専修大学  理工学部    職種   准教授
言語種別	英語
発行・発表の年月	2014/08
形態種別	研究論文（学術雑誌）
査読	査読あり
標題	Imperiled freshwater mussels in drainage channels associated with rare agricultural landscape and diverse fish communities
執筆形態	未選択
掲載誌名	Limnology
出版社・発行元	SPRINGER JAPAN KK
巻・号・頁	15(3),pp.237-247
著者・共著者	J. N. Negishi,H. Tamaoki,N. Watanabe,S. Nagayama,M. Kume,Y. Kayaba,M. Kawase
概要	Identification of landscape structures that predict the distribution of aquatic organisms has the potential to provide a practical management tool for species conservation in agricultural drainage channels. We tested the hypothesis that sites with imperiled freshwater mussels have distinct rural landscape structures and are characterized by the presence of diverse fish communities. In central Japan, the proportion of developed land use in surrounding areas was compared among sites with mussel populations (mussel sites) and randomly chosen sites (random sites) across multiple spatial scales (with a radius ranging from 100 to 3,000 m). Mussel sites were characterized by a much lower proportion of developed land (mean 5-18 %) compared with random sites (mean 32-35 %) at a scale of a parts per thousand currency sign300 m. The areas that met the landscape criteria for mussel sites across multiple scales constituted only 0.23 % of the area that was presumed to have suitable slope and elevation as a mussel habitat. Landscape metrics derived from mussel sites to locate unknown populations had a low predictability (16.7 %). Sites with mussels were located close to each other and had fish communities with higher taxonomic diversity than in sites without mussels. In addition, mussel taxonomic richness was a good predictor of fish community diversity. The quantitative measures of landscape structure may serve as a useful tool when prioritizing or identifying areas for conservation of mussels and fish if spatially autocorrelated distribution of habitat and other critical environmental factors such as habitat connectivity are also considered.
DOI	10.1007/s10201-014-0430-7
ISSN	1439-8621/1439-863X