Modularity of trophic network is driven by phylogeny and migration in a steppe ecosystem |
| |
| Institution: | 1. Arizona State University, Department of Chemistry and Biochemistry, Physical Sciences Building, Room D-57, PO Box 871604, Tempe, AZ 85287, United States;2. Lunar and Planetary Laboratory, University of Arizona, 1629 East University Blvd., Tucson, AZ 85721, United States;1. Mitrani Department of Desert Ecology, Swiss Institute of Dryland Environmental and Energy Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, 84990 Midreshet Ben-Gurion, Israel;2. Wyler Department of Dryland Agriculture, French Associates Institute for Agriculture, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, 84990 Midreshet Ben-Gurion, Israel;3. Omsk State University, 28 Adrianova Str., Omsk 644077, Russian Federation;4. Saint-Petersburg State University, 7/9 Universitetskaya Emb., Saint-Petersburg 199034, Russian Federation;5. Laboratory of Arthropod-Borne Viral Infections, Omsk Research Institute of Natural Foci Infections, 7 Mira Str., Omsk 644080, Russian Federation;6. Omsk State Pedagogical University, 14 Tukhachevskogo Emb., Omsk 644099, Russian Federation;1. International Birding & Research Centre in Eilat, Department of Life Sciences, Ben Gurion University of the Negev, P. O. Box 272, Eilat, Israel;2. Szent István University, Faculty of Veterinarian Sciences, Department of Biomathematics and Informatics, István st. 2, H-1078 Budapest, Hungary;3. Department of Education, Tel Aviv University, Ramat Aviv, Israel;1. Departamento de Ciencia de los Materiales, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 2777, Santiago, Chile;2. Université de Nantes, MOLTECH-Anjou, CNRS, UMR 6200, 2 rue de la Houssinière, BP 92208, Nantes, F-44000, France;3. Université d’Angers, Laboratoire MOLTECH-Anjou UMR-CNRS 6200, 2 Bd Lavoisier, 49045, Angers Cedex, France;4. Université de Nantes, Institut des Matériaux Jean Rouxel (IMN), CNRS, UMR 6502, 2 rue de la Houssinière, BP 32229, 44322, Nantes Cedex 3, France;5. CSInstrument, 2 rue de la Terre de Feu, 91940, Les Ulis, France;6. Scientec, 17 Avenue des Andes, Bâtiment Le cèdre, 91940, Les Ulisd, France;7. Laboratory for Molecular Photonics and Electronics, Department of Physics, National Institute of Technology, Calicut, 673 601, Kerala, India;8. Laboratoire Optoélectronique et Physico-chimie des Matériaux, Université Ibn Tofail, Faculté des Sciences BP 133, Kenitra, 14000, Morocco |
| |
| Abstract: | Evidence is mounting that the structures of trophic networks are governed by migratory movements of interacting species and also by their phylogenetic relationships. Using the largest available trophic network of a large steppe ecosystem, we tested that steppe trophic networks including migratory species are associated with (i) migratory strategy and (ii) phylogenetic relatedness of interacting species: (1) whole graph-level metrics, estimated as modularity, and (2) species-level network metrics, measured as node degree (number of interacting partners), and centrality metrics. We found that (1) a substantial number of links were established by migrant taxa; (2) the phylogenetic signal in network structure was moderate for both consumer and prey nodes; (3) both consumer and prex phylogenies affected modularity, which was modulated by migration strategy; and (4) all species-level graph properties significantly differed between networks including and excluding migratory taxa. In sum, here we show that the structure of steppe trophic networks is primarily governed by migratory strategies and to a lesser extent, by phylogenetic relatedness, using the largest available food web representative for steppe ecology and migration biology. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
