コンゴ, ヌアバレ=ンドキ国立公園に生息するゴリラ (<i>Gorilla gorilla gorilla</i>) の密度推定と集団編成の特徴 Population density and group organization of gorillas (<i>Gorilla gorilla gorilla</i>) in the Nouabalé-Ndoki National Park, Congo

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The population density of western lowland gorillas in the Nouabalé-Ndoki National Park, northern Congo, was estimated both by the “bed-census” method and the “counting” method based on bed-count and direct observation. The density was calculated as 1.92-2.56animals/km<sup>2</sup> and 2.29-2.61 animals/km<sup>2</sup> respectively. Because this was the first time to attempt the “bed-census” method in the Ndoki forest, direct comparison of population density was possible between western lowland gorilla populations at all study sites. It was concluded that the density of the Ndoki gorillas was highest. High population density of the Ndoki gorillas was considered to be possible because they have access to a wide repertoire of foods such as highly nutritious terrestrial herbaceous vegetation (THV) and various kinds of fruits and seeds, corresponding to the seasonal fluctuation of food availability. Although the feeding habits and habitat were different between western and eastern gorillas, they shared a basically one-male group composition, large group size, and unit groups that largely shared their home ranges with each other.

収録刊行物

  • アフリカ研究

    アフリカ研究 1994(44), 29-45, 1994

    学術雑誌目次速報データベース由来

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各種コード

  • NII論文ID(NAID)
    110000105584
  • NII書誌ID(NCID)
    AN0001203X
  • 本文言語コード
    UNK
  • 資料種別
    雑誌論文
  • ISSN
    0065-4140
  • NDL 記事登録ID
    3882634
  • NDL 刊行物分類
    RA48(生態--動物)
  • NDL 雑誌分類
    ZG77(歴史・地理--アジア・アフリカ--アフリカ)
  • NDL 請求記号
    Z8-35
  • データ提供元
    CJP引用  NDL  NII-ELS  J-STAGE 
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