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Fungal Community-Plant Litter Decomposition Relationships Along a Climate Gradient 被引量:2

Fungal Community-Plant Litter Decomposition Relationships Along a Climate Gradient
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摘要 The decomposition of plant litter is a major process of equivalent status to primary production in ecosystem functioning.The spatiotemporal changes in the composition and dynamics of litter fungal community along a climate gradient ranging from arid desert to humid-Mediterranean regions in Israel was examined using wheat straw litter bags placed at four selected sites along the climate gradient,arid,semi-arid,Mediterranean,and humid-Mediterranean sites.Litter samples were collected over a two-year decomposition period to evaluate litter weight loss,moisture,C:N ratio,fungal composition,and isolate density.The litter decomposition rate was found to be the highest during the first year of the study at the Mediterranean and arid sites.Although the Shannon-Wiener index values of the fungal communities in the litter samples were the highest at the humid-Mediterranean site,the number of fungal species was not significantly different between the four study sites.Different fungal groups were found to be related to different study sites:Basidiomycota,Mucoromycotina,and teleomorphic Ascomycota were associated with the humid-Mediterranean site,while Coelomycetes were mostly affected by the arid site.Our results indicate that climate factors play an important role in determining the structure of saprotrophic fungal communities in the decomposing litter and in mediating plant litter decomposition processes. The decomposition of plant litter is a major process of equivalent status to primary production in ecosystem functioning. The spatiotemporal changes in the composition and dynamics of litter fungal community along a climate gradient ranging from arid desert to humid-Mediterranean regions in Israel was examined using wheat straw litter bags placed at four selected sites along the climate gradient, arid, semi-arid, Mediterranean, and humid-Mediterranean sites. Litter samples were collected over a two-year decomposition period to evaluate litter weight loss, moisture, C:N ratio, fungal composition, and isolate density. The litter decomposition rate was found to be the highest during the first year of the study at the Mediterranean and arid sites. Although the Shannon-Wiener index values of the fungal communities in the litter samples were the highest at the humid-Mediterranean site, the number of fungal species was not significantly different between the four study sites. Different fungal groups were found to be related to different study sites: Basidiomycota, Mucoromycotina, and teleomorphic Ascomycota were associated with the humid-Mediterranean site, while Coelomycetes were mostly affected by the arid site. Our results indicate that climate factors play an important role in determining the structure of saprotrophic fungal communities in the decomposing litter and in mediating plant litter decomposition processes.
出处 《Pedosphere》 SCIE CAS CSCD 2014年第4期437-449,共13页 土壤圈(英文版)
关键词 arid desert community structure fungal diversity litter bag Mediterranean region saprotrophic fungi Shannon-Wiener index 凋落物分解 真菌群落 气候因素 梯度 植物 地中海地区 半干旱地区 生态系统功能
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  • 1Allison, S. D., Hanson, C. A. and Treseder, K. K. 2007. Nitrogen fertilization reduces diversity and alters community structure of active fungi in boreal ecosystems. Soil Biol. Biochem. 39: 1878-1887.
  • 2Baldrian, P., Merhautova, V., Petrankova, M., Cajthaml, T. and Snajdr, J. 2010. Distribution of microbial biomass and activity of extracellular enzymes in a hardwood forest soil reflect soil moisture content. Appl. Soil Ecol. 46: 177-182.
  • 3Bastian, F., Bouziri, L., Nicolaxdot, B. and Ranjard, L. 2009. Impact of wheat straw decomposition on successional pat-terns of soil microbial community structure. Soil Biol. Biochem. 41: 262-275.
  • 4Berg, N. and Steinberger, Y. 2008. Role of perennial plants in determining the activity of the microbial community in the Negev Desert ecosystem. Soil Biol. Biochem. 40: 2686-2695.
  • 5Berg, N. and Steinberger, Y. 2010. Are biological effects of desert shrubs more important than physical effects on soil microorganisms? Microbial Ecol. 59: 121-129.
  • 6Bills, G. F. and Polishook, J. D. 1994. Abundance and diversity of microfungi in leaf litter of a lowland rain forest in Costa Rica. Mycologia. 86: 187-198.
  • 7Davet, P. and Rouxel, F. 2000. Detection and Isolation of Soil Fungi. Science Publishers, Inc., Enfield.
  • 8Deacon, L. J., Pryce-Miller, E. J., Frankland, J. C., Bainbridge, B. W., Moore, P. D. and Robinson, C. H. 2006. Diversity and function of decomposer fungi from a grassland soil. Soil Biol. Biochem. 38: 7-20.
  • 9Dix, N. J. and Webster, J. 1995. Fungal Ecology. Chapman and Hall, London.
  • 10Domsch, K. H., Cams, W. and Anderson, T. H. 2007. Com pendium of Soil Fungi. 2nd Ed. IHW-Verlag, Eching.

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