The role of age of first breeding in modeling raptor reintroductions
Abstract The present biodiversity crisis has led to an increasing number of reintroduction programs, and this conservation method is likely to be increasingly used in the future, especially in the face of climate change. Many fundamental questions in population ecology are focused on the mechanisms...
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crwiley:10.1002/ece3.4979 2024-06-02T08:16:03+00:00 The role of age of first breeding in modeling raptor reintroductions Morandini, Virginia Dietz, Sabrina Newton, Ian Ferrer, Miguel 2019 http://dx.doi.org/10.1002/ece3.4979 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.4979 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.4979 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 9, issue 5, page 2978-2985 ISSN 2045-7758 2045-7758 journal-article 2019 crwiley https://doi.org/10.1002/ece3.4979 2024-05-03T11:04:02Z Abstract The present biodiversity crisis has led to an increasing number of reintroduction programs, and this conservation method is likely to be increasingly used in the future, especially in the face of climate change. Many fundamental questions in population ecology are focused on the mechanisms through which populations escape extinction. Population viability analysis (PVA) is the most common procedure for analyzing extinction risk. In the use of PVA to model the trajectories of reintroduced populations, demographic values are sometimes taken from other existing wild populations or even from individuals in captivity. Density dependence in productivity is usually considered in viability models, but density‐dependent variation in age of first breeding is usually ignored. Nevertheless, age of first breeding has a buffering effect on population fluctuations and in consequence on population persistence. We simulated the viability of Spanish Imperial Eagle ( Aquila adalberti ) and Osprey ( Pandion haliaetus ) populations using data from established and reintroduced populations in southern Spain. Our results show that reduction in the age of first breeding is critical in the success of reintroductions of such long‐lived birds. Additionally, increases in productivity allow populations to growth at maximum rate. However, without considering variation in age of breeding, and the associated increasing overall productivity, reintroduced populations seem nonviable. To ignore density dependence in age of breeding in PVA means that we are seriously limiting the potential of the model population to respond to fluctuations in density, thereby reducing its resilience and viability. Variation in age of first breeding is an important factor that must be considered and included in any simulation model involving long‐lived birds with deferred maturity. Article in Journal/Newspaper osprey Pandion haliaetus Wiley Online Library Ecology and Evolution 9 5 2978 2985 |
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Abstract The present biodiversity crisis has led to an increasing number of reintroduction programs, and this conservation method is likely to be increasingly used in the future, especially in the face of climate change. Many fundamental questions in population ecology are focused on the mechanisms through which populations escape extinction. Population viability analysis (PVA) is the most common procedure for analyzing extinction risk. In the use of PVA to model the trajectories of reintroduced populations, demographic values are sometimes taken from other existing wild populations or even from individuals in captivity. Density dependence in productivity is usually considered in viability models, but density‐dependent variation in age of first breeding is usually ignored. Nevertheless, age of first breeding has a buffering effect on population fluctuations and in consequence on population persistence. We simulated the viability of Spanish Imperial Eagle ( Aquila adalberti ) and Osprey ( Pandion haliaetus ) populations using data from established and reintroduced populations in southern Spain. Our results show that reduction in the age of first breeding is critical in the success of reintroductions of such long‐lived birds. Additionally, increases in productivity allow populations to growth at maximum rate. However, without considering variation in age of breeding, and the associated increasing overall productivity, reintroduced populations seem nonviable. To ignore density dependence in age of breeding in PVA means that we are seriously limiting the potential of the model population to respond to fluctuations in density, thereby reducing its resilience and viability. Variation in age of first breeding is an important factor that must be considered and included in any simulation model involving long‐lived birds with deferred maturity. |
format |
Article in Journal/Newspaper |
author |
Morandini, Virginia Dietz, Sabrina Newton, Ian Ferrer, Miguel |
spellingShingle |
Morandini, Virginia Dietz, Sabrina Newton, Ian Ferrer, Miguel The role of age of first breeding in modeling raptor reintroductions |
author_facet |
Morandini, Virginia Dietz, Sabrina Newton, Ian Ferrer, Miguel |
author_sort |
Morandini, Virginia |
title |
The role of age of first breeding in modeling raptor reintroductions |
title_short |
The role of age of first breeding in modeling raptor reintroductions |
title_full |
The role of age of first breeding in modeling raptor reintroductions |
title_fullStr |
The role of age of first breeding in modeling raptor reintroductions |
title_full_unstemmed |
The role of age of first breeding in modeling raptor reintroductions |
title_sort |
role of age of first breeding in modeling raptor reintroductions |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/ece3.4979 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.4979 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.4979 |
genre |
osprey Pandion haliaetus |
genre_facet |
osprey Pandion haliaetus |
op_source |
Ecology and Evolution volume 9, issue 5, page 2978-2985 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.4979 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
5 |
container_start_page |
2978 |
op_container_end_page |
2985 |
_version_ |
1800740395425988608 |