The Osprey reintroduction in Central Italy: dispersal, survival and first breeding data

Monti, Flavio; Dominici, Jean-Marie; Choquet, Rémi; Duriez, Olivier; Sammuri, Giampiero; Sforzi, Andrea

doi:10.1080/00063657.2014.961405

Cited by 24 publications

(18 citation statements)

References 22 publications

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“… Klaassen et al () evaluate survival in adult Ospreys without distinguishing between nonbreeders and breeders. Even then, values of survival are very close to the survival rate of nonbreeding Ospreys reported in Monti et al (). …”

Section: Methodssupporting

confidence: 85%

“…Reduced age of first breeding is commonly reported from reintroduction projects (Monti et al, ; Morandini et al, ; Sarrazin et al, ) and acts as a buffer against extinction in small and colonizing populations (Ferrer et al, ). In long‐lived territorial raptors, entry to the breeding sector has also been found to bring about a reduction in the probability of mortality.…”

Section: Discussionmentioning

confidence: 99%

“…In long-lived territorial raptors, entry to the breeding sector has also been found to bring about a reduction in the probability of mortality. Previously published studies (Ferrer, 2001;Ferrer et al, 2004;Monti et al, 2014;Penteriani, Otalora, Sergio, & Ferrer, 2005) showed that the immature annual survival increases by 20% and 30% after first entry into the breeding population. Decreasing the minimum age of first breeding thus affects population growth in two ways: individuals can contribute with offspring to the population at an earlier age than otherwise and can live longer once they gain a territory (Ferrer et al, 2004).…”

Section: Reintroduced Population Stable Populationsmentioning

confidence: 98%

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The role of age of first breeding in modeling raptor reintroductions

Morandini

Dietz

Newton

et al. 2019

Ecology and Evolution

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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.

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Section: Methodssupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Section: Reintroduced Population Stable Populationsmentioning

confidence: 98%

See 1 more Smart Citation

The role of age of first breeding in modeling raptor reintroductions

Morandini

Dietz

Newton

et al. 2019

Ecology and Evolution

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“…), except in Italy (Monti et al . ). Ospreys from north and central Europe are known to perform long‐distance migrations, a migratory strategy very different from that observed for Mediterranean birds.…”

mentioning

confidence: 97%

“…Due to high natal philopatry, exhibited especially by males, translocations and reintroductions in southern Europe have been strongly recommended (Monti et al . , Dennis ). However, Monti et al .…”

mentioning

confidence: 99%