Resource dependence in a new ecosystem: A host plant and its colonizing community |
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| Institution: | 1. Department of Ecology, University of Debrecen, Debrecen, Egyetem square 1, H-4032 Hungary;2. Hungarian Department of Biology and Ecology, Babeş-Bolyai University, Str. Clinicilor nr. 5–7, 400006 Cluj-Napoca, Romania;3. MTA-DE Biodiversity and Ecosystem Services Research Group, Debrecen, Egyetem square 1, H-4032 Hungary;1. Department of Entomology and Nematology, University of California Davis, One Shields Avenue, Davis, CA 95616-8751, USA;2. Nematology Research Unit, Department of Biology, Ghent University, K.L. Ledeganckstraat 31, 9000 Ghent, Belgium;1. Terres australes et antarctiques françaises (TAAF), 1 rue Gabriel Dejean, B.P 400, 97458 Saint Pierre Cedex, France;2. Institut de recherche pour le développement (IRD), Le Sextant, 44 boulevard de Dunkerque, CS90009, 13572 Marseille Cedex 02, France;3. UMR 9190 MARBEC UM2-CNRS-IRD-UM1-IFREMER, CC 93, Place Eugène Bataillon, Université de Montpellier, F-34095 Montpellier, France;1. Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan 666303, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;3. Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, PR China;4. State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, and College of Forestry, Guangxi University, Nanning, Guangxi 530004, PR China;1. Grupo de Estudios Biofísicos y Ecofisiológicos (GEBEF), Universidad Nacional de la Patagonia San Juan Bosco, 9000 Comodoro Rivadavia, Argentina;2. CONICET, Argentina;3. Laboratorio de Ecología Funcional (LEF), Universidad de Buenos Aires, Argentina;4. University of Miami, USA;1. Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, PR China;2. University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, PR China;3. UNC Gillings School of Global Public Health, 135 Dauer Drive, Chapel Hill, NC 27599, USA;1. Department of Ecology, Technische Universität Berlin, Rothenburgstrasse 12, 12165 Berlin, Germany;2. Interdisciplinary Group of Complex Systems, Department of Mathematics, Universidad Carlos III, Madrid, Spain;3. Department of Ecology, Universidad Complutense, C/José Antonio Nováis 2, 28040 Madrid, Spain |
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| Abstract: | The introduced black locust (Robinia pseudoacacia) has become an invasive plant species in Europe. The introduction of alien plants such as the black locust may modify ecosystem composition and functioning. In response to the presence of a potential host plant, herbivores can adapt and shift to the consumption of the new host plant. In Eastern-Central Europe, the seed predator Bruchophagus robiniae (Hymenoptera: Eurytomidae) is an important consumer of black locust seeds which presumably shifted from its formerly host species to black locust. We tested the influence of host plant abundance on a seed predator – parasitoid community. We found that the seed predator B. robiniae was present in higher numbers in woodlots than in small patches of black locust. The density of the specialist parasitoid Mesopolobus sp. was lower in woodlots than in small patches, while the generalist parasitoid Eupelmus urozonos was evenly distributed between woodlots and small patches of black locust. We found that parasitoid species are influenced by the patch size of host plants, thus characteristics of introduced host plants can also manifest in higher trophic levels. |
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| Keywords: | Black locust Novel ecosystem Pre-dispersal Seed predation |
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