Functional traits determine formation of mutualism and predation interactions in seed-rodent dispersal system of a subtropical forest |
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| Institution: | 1. State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China;2. Shaanxi Institute of Zoology, Xi''an 710032, China;1. Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China;2. Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, China;1. Programa de Pós-Graduação em Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Caixa Postal 131, CEP 74001-970 Goiânia, Goiás, Brazil;2. Programa de Pós-Graduação em Ecologia, Instituto de Ciências Biológicas, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Bloco E, Asa Norte, CEP 770910-900 Brasília, DF, Brazil;3. Programa de Pós-Graduação em Ciências Ambientais, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Caixa Postal 131, CEP 74001-970, Goiânia, Goiás, Brazil;4. Departamento de Ecologia, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Caixa Postal 131, CEP 74001-970 Goiânia, Goiás, Brazil;5. Laboratório de Macroecologia, Universidade Federal de Goiás, Campus II, BR 364, Km 192, CEP 75801-615 Jataí, Goiás, Brazil;1. Programa de Pós-Graduação em Ecologia, Conservação e Manejo da Vida Silvestre, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil;2. Universidade de São Paulo, Escola Superior de Agricultura “Luiz de Queiroz”, Laboratório de Ecologia, Manejo e Conservação de Fauna Silvestre (LEMaC), Piracicaba, São Paulo, Brazil;3. Finnish Environment Institute, Freshwater Centre, Oulu, Finland;1. Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystem, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;2. Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China;3. Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China;4. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 10049, China;5. Department of Biological Sciences, Tennessee State University, Nashville, TN 37209, USA;6. School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China;1. Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UK;2. Department of Biology, University of York, York YO10 5DD, UK;3. Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK;1. Department of Teacher Training and Biodiversity Studies, University of ?ód?, Banacha 1/3, 90-237 ?ód?, Poland;2. Medical University of ?ód?, Sterlinga 1/3, 91-425 ?ód?, Poland |
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| Abstract: | Network structure in plant-animal systems has been widely investigated but the roles of functional traits of plants and animals in formation of mutualism and predation interactions and community structure are still not fully understood. In this study, we quantitatively assessed interaction strength of mutualism and predation between 5 tree species and 7 rodent species by using semi-natural enclosures in a subtropical forest in southwest China. Seeds with high handling-time and nutrition traits (for both rat and mouse species) or high tannin trait (for mouse species) show high mutualism but low predation with rodents; while seeds with low handling-time and low nutrition traits show high predation but low mutualism with rodents. Large-sized rat species are more linked to seeds with high handling-time and high nutrition traits, while small-sized mouse species are more connected with seeds with low handling-time, low nutrition value and high tannin traits. Anti-predation seed traits tend to increase chance of mutualism instead of reducing predation by rodents, suggesting formation of mutualism may be connected with that of predation. Our study demonstrates that seed and animal traits play significant roles in the formation of mutualism and predation and network structure of the seed-rodent dispersal system. |
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| Keywords: | Plant–animal interaction Network structure Stability Functional traits Hoarding behavior Mutualism/predation Rodent Seed |
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