I examined the nest site selection of the Spanish Imperial Eagle Aquila adalberti population of the Donana National Park (SW Spain) from 1984 to 1994, in relation to the microhabitat and macrohabitat representing vegetative composition, degree of human influence and land use. The study included 75 active nest sites and 75 random sites. Univariate analyses and Generalized Linear Models were used. Nest sites differed significantly from the random sites for 87% of habitat variables measured. The model correctly classified 85.3% of the nest sites and 86.7% of the random sites. The probability of occupation of a site by a Spanish Imperial Eagle increased with tree height, angle of aperture of the wood stand, distance to paved roads, distance to urban centre and distance to water body. / Four productivity parameters (laying date, number of eggs, number of nestlings and number of chicks fledged) were measured over the same 10-year period for 16 territories in the Donana Park. Spearman correlation coefficient analyses ($r sb{s}$) were used to test for relationships between territory habitat characteristics, representing microhabitat, vegetative composition, degree of human influence and land use, and productivity. Egg-laying was later in territories situated closer to urban centres (n = 16 $r sb{s}$ = $-$0,529, $P < 0.05)$ and those with more kilometres of power lines (n = 16, $r sb{s}$ = 0.518, $P < 0.05)$. No other productivity parameter was found to be influenced significantly by any of the territory features measured.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.23870 |
| Date | January 1996 |
| Creators | Bisson, Isabelle |
| Contributors | Bird, D. N. (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Natural Resource Sciences.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001506139, proquestno: MM12163, Theses scanned by UMI/ProQuest. |
Page generated in 0.002 seconds