We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
HABITAT PATCH OCCUPANCY DYNAMICS OF GLAUCOUS-WINGED GULLS (LAR US GLAUCESCENS) I: A DISCRETE-TIME MODEL.
- Authors
Phillips, Karl W.; Damania, Smruti P.; Hayward, James L.; Henson, Shandelle M.; Logan, Clara J.
- Abstract
Diurnal habitat occupancy dynamics of Glaucous-winged Gulls were evaluated in a system of six habitats on and around Protection Island, Washington. Data were collected on the rates of gull movement between habitat patches, and from these data the probabilities of transitions between habitats were estimated as functions of tide height and time of day. A discrete-time matrix model based on the transition probabilities was used to generate habitat occupancy predictions, which were then compared to hourly census data. All model parameters were estimated directly from data rather than through model fitting. The model made reasonable predictions for two of the six habitats and explained 45% of the variability in the data from 2003. The construction and testing of mathematical models that predict occupancies in multiple habitats may play increasingly important roles in the understanding and management of animal populations within complex environments.
- Subjects
PROTECTION Island (Wash.); WASHINGTON (State); GLAUCOUS-winged gull; LARUS; BIRD populations; HABITATS; POPULATION biology; ANIMAL ecology; MATHEMATICAL models
- Publication
Natural Resource Modeling, 2005, Vol 18, Issue 4, p441
- ISSN
0890-8575
- Publication type
Article
- DOI
10.1111/j.1939-7445.2005.tb00167.x