Contribution of soil fauna to litter decomposition in Songnen sandy lands in northeastern China |
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| Institution: | 1. College of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024, PR China;2. Key Laboratory for Vegetation Ecology of Education Ministry, Northeast Normal University, Changchun 130024, PR China;3. Jilin Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun 130024, PR China;4. College of Environment and Planning, Henan University, Kaifeng 475004, PR China;1. Helmholtz-Centre for Environmental Research – UFZ, Department of Community Ecology, Theodor-Lieser-Strasse 4, 06110 Halle, Germany;2. iDiv, German Centre for Integrative Biodiversity Research, Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany;3. Department of Ecology, Faculty of Biology, Philipps-University Marburg, Karl-von-Frisch Strasse 8, 35032 Marburg, Germany;4. International Rice Research Institute, DAPO 7777, Metro Manila, Philippines;5. Centre for Agricultural Bioscience International (CABI), SE Asia Regional Centre, Serdang, Malaysia;1. School of Life Sciences, Nanjing University, Nanjing 210093, China;2. Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China;3. Department of Biology, University of Oklahoma, Norman, OK 73019-0235, USA;4. School of Pharmacy and Biological Sciences, Weifang Medical University, Weifang 261053, China;5. College of Biological Science and Engineering, Beifang University of Nationalities, Yinchuan 750021, China;1. Departamento de Ecologia, Universidade Federal do Rio de Janeiro, Prédio do CCS – Bloco A – Cidade Universitária – Ilha do Fundão, Caixa Postal 68.020, Rio de Janeiro, RJ, CEP. 21.941-540, Brazil;2. Núcleo de Pesquisas em Ecologia e Desenvolvimento Socio-Ambiental de Macaé (NUPEM), Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto, No. 764. Bairro São José do Barreto, Macaé, RJ, CEP: 27965-045, Brazil;3. Departmento de Ecologia, Universidade Federal do Rio Grande do Norte (UFRN), Campus Lagoa Nova S/N, Centro de Biociências, Natal, RN, CEP 59078-900, Brazil;4. Laboratório de Ecologia, Instituto de Biociências (INBIO), Universidade Federal do Mato Grosso do Sul (UFMS), Cidade Universitária S/N, Campo Grande, M. Caixa Postal: 549*, CEP: 79070-900, Brazil;5. CEFE UMR 5175, Centre National de la Recherche Scientifique (CNRS), Université de Montpellier, Universite Paul-Valéry Montpellier, EPHE, IRD, 1919 Route de Mende, F-34293 Montpellier Cedex 5, France;6. Ecotron Européen de Montpellier, Unité Propre de Service 3248, Centre National de la Recherche Scientifique (CNRS), Campus Baillarguet, F-34980 Montferrier-sur-Lez, France;1. State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, PR China;2. Huitong Experimental Station of Forest Ecology, Chinese Academy of Sciences, Huitong 418307, PR China;3. University of Chinese Academy of Sciences, Beijing 100049, PR China;4. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China;1. Department of Environmental, Biological, and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, Via Vivaldi 43, 81100 Caserta, Italy;2. Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Viale delle Scienze 11/A, 43124 Parma, Italy |
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| Abstract: | Soil fauna are considered to be an important determinant of the litter decomposition in terrestrial ecosystems. However, the contributions of soil macrofauna and mesofauna to litter decomposition in semi-arid environments are not well-recognized. In this paper, litterbags with different mesh sizes (4.7 mm, 2 mm and 0.01 mm) were employed to examine the intraspecific differences in the decomposition of Stipa baicalensis, Achnatherum avinoides, Lespedeza davurica and Agropyron cristatum. In addition, the effects of soil macrofauna and mesofauna on litter decomposition were determined in Songnen sandy land. The results of this study showed that Prostigmata, Psocidae and Oribatida were dominant fauna in the litterbags. Significant intraspecific differences were found in litter decomposition rates, and the process of litter decomposition can be separated into two apparent stages. Ac. avinoides exhibited the highest contribution rate to litter decomposition, followed by Ag. cristatum, L. davurica and S. baicalensis. Contribution rates of macrofauna and mesofauna to litter decomposition were different. The rate of litter decomposition was positively correlated with the group density of fauna. Our results suggested that both macrofauna and mesofauna could accelerate litter decomposition and, consequently, nutrient cycling in semi-arid ecosystems, although their functional roles were different in litter decomposition. |
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