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    Author(s): Honghua Ruana; Yiqing Lib; Xiaoming Zouc
    Date: 2005
    Source: Pedobiologia 49 :529—538
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (234 B)

    Description

    Forest debris on ground surface can interact with soil biota and consequently change ecosystem processes across heterogeneous landscape. We examined the interactions between forest debris and litter decomposition in riparian and upland sites within a tropical wet forest. Our experiment included control and debris-removal treatments. Debris-removal reduced leaf litter decomposition rates in both the riparian and upland sites. Debris-removal also reduced soil microbial biomass C in the upland site, but had no effect on microbial biomass C in the riparian site. In contrast, debris-removal altered the density of selected arthropod groups in the riparian site. Litter decomposition rates correlated with both soil microbial biomass and the density of millipedes in a multiple stepwise regression model. Removal of forest debris can substantially reduce rates of leaf litter decomposition through suppressing soil activities. This influence can be further modified by landscape position. Forest debris plays an essential role in maintaining soil activities and ecosystem functioning in this tropical wet forest.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Ruana, Honghua; Lib, Yiqing; Zouc, Xiaoming. 2005. Soil communities and plant litter decomposition as influenced by forest debris: Variation across tropical riparian and upland sites. Pedobiologia 49 :529—538

    Keywords

    Landscape heterogeneity, Litter arthropods, Puerto Rico, Soil microbial biomass, Tabonuco forest, Tropical wet forest.

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