Zomer, Henri (2021) Postfledging first-year survival of skylarks in a semi-natural habitat. Master's Research Project 2, Ecology and Evolution.
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Abstract
Postfledging first-year survival is one of the major parameters determining passerine population dynamics. Despite its importance, it is one of the least studied components in avian population dynamics. Empirical estimates of postfledging first-year survival combined with factors that are predictors of this survival are important for effective species conservation and understanding avian population changes. The study of a skylark population breeding in a semi-natural habitat in the Aekingerzand/Kale Duinen, Appelscha, Drenthe, the Netherlands (52.93178N, 6.30006E) shows a juvenile survival probability (postfledging first-year survival) of 23.5 ± 1.5% and an adult survival probability of 63.2 ± 2.5% (from 2006-2016). Postfledging first-year survival of skylark chicks increased with an increasing body mass. Postfledging first-year survival was higher when the nest was made in a wet area compared to a dry area. Postfledging first-year survival declined during the breeding season, i.e. chicks hatched later in the season have a lower survival probability than chicks hatched early in the season. There is a decline in postfledging first-year survival over the years, while adult survival increased based on the year of birth, i.e. a bird hatched in 2016 has a higher adult survival probability than a bird hatched in 2010.
| Item Type: | Thesis (Master's Research Project 2) |
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| Supervisor name: | Tieleman, B.I. |
| Degree programme: | Ecology and Evolution |
| Thesis type: | Master's Research Project 2 |
| Language: | English |
| Date Deposited: | 19 Apr 2021 09:12 |
| Last Modified: | 19 Apr 2021 09:12 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/24267 |
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