| Abstract: | We developed an individual-based model to study the effects of different regimes of harvesting eggs and natural predation on reproductive success in a colony of the glaucous-winged gull (Larus glaucescens) in Glacier Bay National Park, Alaska. The model incorporates the sequence of egg laying, relaying, and incubation to hatching for individual nests and calculates hatching success, incubation length, and the total number of eggs laid (as a result of re-nesting and relaying) in all nests in the colony. Stochasticity is incorporated in the distribution of nest lay dates, predation rates, and nests attacked during predation and harvest events. We estimated parameter values by fitting the model to data collected at a small colony during 1999 and 2000 using maximum likelihood. We then simulated harvests and analyzed model predictions. Model outputs indicate that harvesting early, and at one time, provides a predictable take of eggs with the least impact to gulls. ?? 2005 Elsevier B.V. All rights reserved. |
| Genre: | Article |
| ProdID: | 70028407 |
| Citation Author: | Zador, S. G.; Piatt, J. F.; Punt, A. E. |
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| Citation End Page: | 326 |
| Citation Issue: | 3-4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Ecological Modelling |
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| Citation Number Of Pages: | 9 |
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| Citation Search Results Text: | Balancing predation and egg harvest in a colonial seabird: A simulation model; 2006; Article; Journal; Ecological Modelling; Zador, S. G.; Piatt, J. F.; Punt, A. E. |
| Citation Start Page: | 318 |
| Citation Volume: | 195 |
| Citation Year: | 2006 |
| Type: | citation/reference |
| Text: | Balancing predation and egg harvest in a colonial seabird: A simulation model; 2006; Article; Journal; Ecological Modelling; Zador, S. G.; Piatt, J. F.; Punt, A. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/j.ecolmodel.2005.11.002 |
| Date Other: | Sun, 1 Jan 2006 00:00 -0600 |
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