The feeding habits of collembola along decomposition gradients using stable carbon and nitrogen isotope analyses |
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Authors: | Takuo Hishi Fujio Hyodo Hiroshi Takeda |
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Institution: | a Laboratory of Forest Ecology, Graduate School of Agriculture, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 6068502, Japan b Research Institute for Humanity and Nature, 457-4 Motoyama, Kamigamo, Kita-ku, Kyoto 6038047, Japan |
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Abstract: | We measured the natural stable carbon (C) and nitrogen (N) isotope ratio patterns of collembola and the organic substrates of their habitats and potential food sources in a warm temperate coniferous forest. Based on previous studies, we classified collembola into successional classes along litter decomposition gradients: early colonizers, late colonizers, and dominants-throughout. The stable C and N isotope ratios of late colonizers exceeded those of early colonizers, and those of the dominants-throughout were intermediate between early and late colonizers, which is consistent with previous studies on two macro-invertebrates, earthworms and termites. The C and N isotopic signature differences in collembola may reflect food resource partitioning along decomposition gradients. |
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Keywords: | Collembola Decomposition gradient Feeding habit Resource partitioning Stable C and N isotope |
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