Habitat selection and the selection of Japanese white pine cones (<i>Pinus parviflora</i>) by Japanese squirrels (<i>Sciurus lis</i>) in the subalpine zone of Mt. Fuji

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  • 富士山亜高山帯に生息するニホンリス（<i>Sciurus lis</i>）の環境選択とゴヨウマツ（<i>Pinus parviflora</i>）球果の選択性
  • 富士山亜高山帯に生息するニホンリス(Sciurus lis)の環境選択とゴヨウマツ(Pinus parviflora)球果の選択性
  • フジサン アコウザンタイ ニ セイソク スル ニホンリス Sciurus lis ノ カンキョウ センタク ト ゴヨウマツ Pinus parviflora キュウカ ノ センタクセイ

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Abstract

Habitat selection of the Japanese squirrel (Sciurus lis) in subalpine forests (elev. 2,100–2,300 m) on Mt. Fuji, central Japan, was investigated by radio tracking of six individuals in three seasons. Among six vegetation types (Tsuga forests, Larix forests, Abies forests, Pinus stands, forest edges, and open areas), the most selected type was the Pinus stand-type in summer and autumn. In spring, Larix forests were selected, probably because their young leaves and under-stories provide a greater diversity of foods. Most individuals avoided Tsuga forest, forest edges, and open areas in any season. Pinus parviflora showed large variation in its cone size within trees. The greater the cone size, the larger the number of seeds per cone. Squirrels selected large cones for feeding.<br>

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