TanYinZhangEtAl2021

Référence

Tan, B., Yin, R., Zhang, J., Xu, Z., Liu, Y., He, S., Zhang, L., Li, H., Wang, L., Liu, S., You, C., Peng, C. (2021) Temperature and Moisture Modulate the Contribution of Soil Fauna to Litter Decomposition via Different Pathways. Ecosystems, 24(5):1142-1156. (Scopus )

Résumé

Soil fauna are crucial decomposers in terrestrial ecosystems, but how the role of soil fauna varies among climatic conditions and litter substrates remains poorly understood. Here, we conducted a four-year litter decomposition experiment along an elevational gradient (453 m, 945 m, 3058 m and 3582 m) in southwestern China. Two dominant tree species with contrasting leaf traits (coniferous vs. broadleaf) were used for field incubation at each site. Litterbags with two mesh sizes (3 vs. 0.04 mm) were used to permit and exclude the presence of soil fauna. The changes in elevation caused corresponding shifts in temperature and precipitation but did not affect the abundance and diversity of soil fauna communities. Soil fauna increased annual decomposition rates (k) by 14.5–28.7% across all litter types. Our structural equation models indicated that increasing temperature reduced while increasing moisture increased soil fauna effects on decomposition. Moreover, temperature and moisture modulated the contribution of soil fauna to litter decomposition via different mechanisms: (1) the reduced soil fauna contribution was driven by the increased temperature through increasing the litter C/N and fauna density (possibly because higher densities were associated with smaller organisms) and (2) the increased soil fauna effects were driven by increased moisture that increased the diversity of soil fauna. These results demonstrate that the effects of soil fauna are sensitive to changes in climate and litter quality across elevation gradients, and environment factors (i.e., temperature and moisture) may mediate the contribution of soil fauna to litter decomposition in opposite directions. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.

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@ARTICLE { TanYinZhangEtAl2021,
    AUTHOR = { Tan, B. and Yin, R. and Zhang, J. and Xu, Z. and Liu, Y. and He, S. and Zhang, L. and Li, H. and Wang, L. and Liu, S. and You, C. and Peng, C. },
    JOURNAL = { Ecosystems },
    TITLE = { Temperature and Moisture Modulate the Contribution of Soil Fauna to Litter Decomposition via Different Pathways },
    YEAR = { 2021 },
    NOTE = { cited By 4 },
    NUMBER = { 5 },
    PAGES = { 1142-1156 },
    VOLUME = { 24 },
    ABSTRACT = { Soil fauna are crucial decomposers in terrestrial ecosystems, but how the role of soil fauna varies among climatic conditions and litter substrates remains poorly understood. Here, we conducted a four-year litter decomposition experiment along an elevational gradient (453 m, 945 m, 3058 m and 3582 m) in southwestern China. Two dominant tree species with contrasting leaf traits (coniferous vs. broadleaf) were used for field incubation at each site. Litterbags with two mesh sizes (3 vs. 0.04 mm) were used to permit and exclude the presence of soil fauna. The changes in elevation caused corresponding shifts in temperature and precipitation but did not affect the abundance and diversity of soil fauna communities. Soil fauna increased annual decomposition rates (k) by 14.5–28.7% across all litter types. Our structural equation models indicated that increasing temperature reduced while increasing moisture increased soil fauna effects on decomposition. Moreover, temperature and moisture modulated the contribution of soil fauna to litter decomposition via different mechanisms: (1) the reduced soil fauna contribution was driven by the increased temperature through increasing the litter C/N and fauna density (possibly because higher densities were associated with smaller organisms) and (2) the increased soil fauna effects were driven by increased moisture that increased the diversity of soil fauna. These results demonstrate that the effects of soil fauna are sensitive to changes in climate and litter quality across elevation gradients, and environment factors (i.e., temperature and moisture) may mediate the contribution of soil fauna to litter decomposition in opposite directions. © 2020, Springer Science+Business Media, LLC, part of Springer Nature. },
    AFFILIATION = { Institute of Ecology and Forestry, College of Forestry, Forestry Ecological Engineering in Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Sichuan Agricultural University, No. 211, Huimin Road, Wenjiang District, Chengdu, 611130, China; Department of Community Ecology, Helmholtz-Centre for Environmental Research-UFZ, Theodor-Lieser-Strasse 4, Halle, Saale, 06110, Germany; Department of Biological Science, Institute of Environment Sciences, University of Quebec at Montreal, Montreal, Canada; Center for Ecological Forecasting and Global Change, College of Forestry, Northwest Agriculture & Forest University, Yangling, China },
    AUTHOR_KEYWORDS = { Climate variation; Ecosystem function; Litter decomposition; Litter substrate; Soil fauna; Subtropical forest },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s10021-020-00573-w },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092708711&doi=10.1007%2fs10021-020-00573-w&partnerID=40&md5=12b96436a69768a851b9931add7f0c9a },
}

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