Spatial relationships and mechanisms of coexistence between dominant and subordinate top predators
| Autor: | J. M. Fernández-Pereira, Lorenzo Pérez-Camacho, Salvador Rebollo, Jeffrey S. Jenness, Gonzalo García-Salgado, Sara Martínez-Hesterkamp |
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| Přispěvatelé: | Universidad de Alcalá. Departamento de Ciencias de la Vida. Unidad docente Ecología |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
biology Ecology Accipiter Interspecific competition biology.organism_classification 010603 evolutionary biology 01 natural sciences Sparrowhawk Environmental science 010605 ornithology Predation Medio Ambiente Nest Guild Animal Science and Zoology Ecology Evolution Behavior and Systematics Intraguild predation Apex predator |
| Zdroj: | e_Buah Biblioteca Digital Universidad de Alcalá instname |
| Popis: | Most forest ecosystems contain a diverse community of top-level predators. How these predator species interact, and howtheir interactions infl uence their spatial distribution is still poorly understood.Here we studied interactions among top predators in a guild of diurnal forest raptors in order to test the hypothesisthat predation among competing predators (intraguild predation) signifi cantly aff ects the spatial distribution of predatorspecies, causing subordinate species to nest farther away from the dominant ones.Th e study analyzed a guild in southwestern Europe comprising three raptor species. For 8 years we studied the spatialdistribution of used nests, breeding phenology, intraguild predation, territory occupancy, and nest-builder species andsubsequent nest-user species.Th e subordinate species (sparrowhawk Accipiter nisus ) nested farther away from the dominant species (goshawk A. gentilis), which preyed on sparrowhawks but not on buzzards Buteo buteo , and closer to buzzards, with which sparrowhawks donot share many common prey. Th is presumably refl ects an eff ort to seek protection from goshawks. Th is potential positiveeff ect of buzzards on sparrowhawks may be reciprocal, because buzzards benefi t from old sparrowhawk nests, which buzzardsused as a base for their nests, and from used sparrowhawk nests, from which buzzards stole prey. Buzzards occasionallyoccupied old goshawk nests. Universidad de Alcalá de Henares |
| Databáze: | OpenAIRE |
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