Some factors influencing the distribution of otters (Lutra lutra)
作者： S. M. MACDONALD , C. F. MASON
DOI: 10.1111/J.1365-2907.1983.TB00259.X
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摘要: The number of sites at which evidence otters was found and the total signs were recorded on fifty 5-km stretches rivers in Wales West Midlands England. Data collected fifteen parameters habitat considered to be importance subjected a multivariate analysis. Evidence thirty-four stretches. distribution correlated with presence potential holts (of 107 found) mature sycamore ash trees. measured variables accounted for 52 5% overall variation otter 60 2% signs. conservation is discussed light results analysis.
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