Diet compositions of two sympatric ungulates, the Japanese serow (Capricornis crispus) and the sika deer (Cervus nippon), in a montane forest and an alpine grassland of Mt. Asama, central Japan

Diet compositions of two sympatric ungulates, the Japanese serow (Capricornis crispus) and the sika deer (Cervus nippon), in a montane forest and an alpine grassland of Mt. Asama, central Japan
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日本中部浅间山山地森林和高山草原上两种同域有蹄类动物日本羚羊 (Capricornis Cripus) 和梅花鹿 (Cervus nippon) 的饮食组成

DOI:
10.1007/s42991-021-00122-5
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发表时间:
2021
期刊:
影响因子:
1.6
通讯作者:
M. Minami
M. Minami
中科院分区:
生物学3区
文献类型:
--
作者:
H. Takada;R. Yano;Ayumi Katsumata;S. Takatsuki;M. Minami

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确定有助于食物资源分配或重叠的环境因素是理解多物种共存机制的关键。两种反刍动物,日本serow(Capricornis crispus)和西卡鹿(Cervus nippon),共域发生在日本,和种间相互作用,它们之间的食物资源利用仍不清楚。在这项研究中,我们比较了这两个同域有蹄类动物的饮食在两个截然不同的栖息地:山地森林和高山草原山。浅间山地森林提供阔叶树和数量相对较少的禾本科植物,而高山草地提供丰富的禾本科植物。在山地森林中,鬣羚主要以双子叶植物叶为食,而鹿主要以禾本科植物为食,表明食物资源的分配。相比之下,在高寒草原,这两个物种主要是禾本科植物,导致饮食重叠。这些结果表明,这两个物种可以分配食物资源的栖息地具有多样性的食物资源,而他们的饮食往往重叠在栖息地具有简单的食物资源组成。它们的共存似乎促进了食物资源分区在山地森林和共享丰富的食物在高山草原,这表明它们之间的竞争是不太可能在这个位置。
Determining the environmental factors that contribute to food resource partitioning or overlap is key to understanding the mechanisms of multispecies coexistence. Two ruminants, the Japanese serow (Capricornis crispus) and the sika deer (Cervus nippon), occur sympatrically in Japan, and interspecific interactions between them regarding food resource utilization remain unclear. In this study, we compared the diets of these two sympatric ungulates in two contrasting habitats: a montane forest and an alpine grassland in Mt. Asama. The montane forest provides both broad-leaved trees and graminoids of relatively small quantity, while the alpine grassland provides abundant graminoids. In the montane forest, the serow fed mainly on dicot leaves while the deer fed mainly on graminoids, suggesting partitioning of food resources. By contrast, in the alpine grassland, both species fed mainly on graminoids, resulting in dietary overlap. These results suggest that these two species can partition food resources in habitats with diverse food resources, while their diets tend to overlap in habitats with simple food resource composition. Their coexistence was seemingly facilitated by food resource partitioning in the montane forest and by sharing abundant food in the alpine grassland, suggesting that competition between them is unlikely at this location.
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发表时间: 2020-02
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DOI: --
发表时间: 2002
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