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Imperiled freshwater mussels in drainage channels associated with rare agricultural landscape and diverse fish communities

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Title: Imperiled freshwater mussels in drainage channels associated with rare agricultural landscape and diverse fish communities
Authors: Negishi, Junjiro Browse this author →KAKEN DB
Tamaoki, H. Browse this author
Watanabe, N. Browse this author
Nagayama, S. Browse this author
Kume, M. Browse this author
Kayaba, Y. Browse this author
Kawase, M. Browse this author
Keywords: Development
Paddy fields
Issue Date: Aug-2014
Publisher: Springer
Journal Title: Limnology
Volume: 15
Issue: 3
Start Page: 237
End Page: 247
Publisher DOI: 10.1007/s10201-014-0430-7
Abstract: 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.
Rights: Published online: 23 April 2014, ©The Japanese Society of Limnology 2014, "The original publication is available at"
Type: article (author version)
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 根岸 淳二郎

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