caa a22 4500 467885338 CHVBK 20180406152732.0 cr unu---uuuuu 170328e20060901xx s 000 0 eng 10.1007/s10021-005-0101-y doi (NATIONALLICENCE)springer-10.1007/s10021-005-0101-y Spatial Ecological Hierarchies: Coexistence on Heterogeneous Landscapes via Scale Niche Diversification [Elektronische Daten] [Péter Szabó, Géza Meszéna] Spatially heterogeneous environments are generally characterized by nested landscape patterns with resource aggregations on several scales. Empirical studies indicate that such nested landscape patterns impose selection constraints on the perceptive scales of animals, but the underlying selection mechanisms are unclear. We investigated the selection dynamics of perceptive scale within a spatial resource utilization model, where the environment is characterized by its resource distribution and species differ in their perceptive scales and resource preemption capabilities. Using three model landscapes with various resource distributions, we found that the optimal perceptive scale is determined by scale-specific attributes of the landscape pattern and that the number of coexisting species increases with the number of characteristic scales. Based on the results of this model, we argue that resource aggregations on different scales act as distinct resources and that animal species of particular perceptive scales are superior in utilizing resource aggregations of comparable spatial extent. Due to the allometric relationship between body size and perceptive scale, such fitness difference might result in discontinuous body mass distributions. Springer Science+Business Media, Inc., 2006 scaling nationallicence body size nationallicence textural discontinuity nationallicence competition nationallicence niche nationallicence perceptive scale nationallicence Szabó Péter Department of Biological Physics, Eötvös University, Pázmány Péter sétány 1/A, H-1117, Budapest, Hungary aut Meszéna Géza Department of Biological Physics, Eötvös University, Pázmány Péter sétány 1/A, H-1117, Budapest, Hungary aut Ecosystems Springer-Verlag; www.springer-ny.com 9/6(2006-09-01), 1009-1016 1432-9840 9:6<1009 2006 9 10021 https://doi.org/10.1007/s10021-005-0101-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10021-005-0101-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Szabó Péter Department of Biological Physics, Eötvös University, Pázmány Péter sétány 1/A, H-1117, Budapest, Hungary aut NATIONALLICENCE 700 1- Meszéna Géza Department of Biological Physics, Eötvös University, Pázmány Péter sétány 1/A, H-1117, Budapest, Hungary aut NATIONALLICENCE 773 0- Ecosystems Springer-Verlag; www.springer-ny.com 9/6(2006-09-01), 1009-1016 1432-9840 9:6<1009 2006 9 10021 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer