Abstract

The degree of trophic differentiation of millipedes in taxocenes of temperate and tropical forests was estimated by isotopic analysis. The isotope ratio variation among species was notably wider in a tropical forest (23 millipede species, δ15N ranges within 10‰) than in a temperate broad-leaved forest (9 species, δ15N range less than 3‰). It is suggested that partitioning of food resources among species contributes significantly to the maintenance of high diversity of soil saprotrophic animals in tropical ecosystems.

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