First-year and adult survival of the endangered Lesser Kestrel<i>Falco naumanni</i>in southern France

Prugnolle, Franck; Pilard, Philippe; Brun, L.; Tavecchia, Giacomo

doi:10.1080/00063650309461292

Cited by 23 publications

(21 citation statements)

References 13 publications

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“…Research has generally focussed on post-fledging survival of juveniles and survival rates of adults, dealing with the effect of ecological conditions in wintering or breeding areas (Gould and Fuller, 1995;Prugnolle et al, 2003;Grande et al, 2009;Minhoub et al, 2010). Accessibility of nests in a large population has allowed us to provide a first contribution revealing the role played by the intrinsic characteristics of nests and colonies on the nest survival of lesser kestrels in a dry cereal steppe habitat.…”

Section: Discussionmentioning

confidence: 99%

Effects of Nest and Colony Features on Lesser Kestrel (Falco naumanni) Reproductive Success

Sarà

Campobello

Zanca

2012

Avian Biology Research

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Lesser kestrel is a facultative colonial raptor mostly breeding in man-made structures. During 2009-2011 we checked the fate of 545 nests found in 18 colonies located in south-eastern Sicily. We determined the reproductive success of breeding pairs by analysing the survival time of each egg to hatching (n = 2495) and each nestling to fledging (n = 1849) with the Linear Hazard model of survival times. We determined whether egg and nestling survival differed between years with a Gehan-Wilcoxon test. By Cox regressions, we related the survival times with nest and colony features. Egg and nestling survival times showed a strong annual effect. The two reproductive stages of lesser kestrel when controlled for the annual effect demonstrated a significant effect for some nest and colony features. Most of them, like height from the ground, nest depth, reused nests and the presence of jackdaws, are likely related to the predation pressure faced by lesser kestrel nests. Westward and southward nests had a better egg survival respect to those in the cold sides and in the interior of buildings. The location of colony in the agricultural plain and human disturbance ranked as the most important variables, with core location of a colony and high disturbance levels negatively affecting the reproductive success of lesser kestrel in the Gela Plain, so urging a more environment-aware land use management of this Important Bird Area.

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Section: Discussionmentioning

confidence: 99%

Effects of Nest and Colony Features on Lesser Kestrel (Falco naumanni) Reproductive Success

Sarà

Campobello

Zanca

2012

Avian Biology Research

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“…As in Hiraldo et al (1996), our findings suggest that lesser kestrel demography is driven by the adult class (but see Prugnolle et al, 2003). Adult survival is the vital rate contributing the most to the sensitivity and elasticity of the population growth rate, followed by juvenile survival and adult fecundity.…”

Section: Conservation Implications and Management Of Farmland Habitatsmentioning

confidence: 61%

“…Conservation practices working on the basis of explicit factors affecting adult survival would thus be the most decisive for correct population management of the lesser kestrel across the Palearctic range (Ehrlén et al, 2001;Sarà et al, 2014). Adult survival probabilities in grassland and artichoke colonies (0.66-0.75) are comparable to those of other lesser kestrel populations (0.67-0.72: Hiraldo et al, 1996;Prugnolle et al, 2003;Serrano et al, 2005). Contrarily, adult survival in arable colonies (0.30) of the Gela Plain is the lowest recorded in demographic studies of the species so far.…”

Section: Conservation Implications and Management Of Farmland Habitatsmentioning

confidence: 62%

“…individual capture-recapture data were used to identify the effect of land use on fecundity and survival probabilities of lesser kestrels. In our study area, both survival and recapture probability changed positively with age (see also Prugnolle et al, 2003). This is probably due to age-dependent access to reproduction in high quality colonies (Bellia et al, 2011;Serrano and Tella, 2007), and to the effect of annual rainfall patterns on age-dependent mortality in overwintering areas (Mihoub et al, 2010).…”

Section: Discussionmentioning

confidence: 74%

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Habitat- and density-dependent demography of a colonial raptor in Mediterranean agro-ecosystems

Maggio

Campobello

Tavecchia

et al. 2016

Biological Conservation

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“…Probably the most important measure has been the improvement of an effective no-take fisheries zone by the Moroccan authorities, regular surveillance of the coast and marine patrolling, and the seal awareness of fishermen and inhabitants of the area around the main colonies. Improving recruitment and breeding success by increasing the number of safe breeding sites is typically one of the primary measures to enhance the growth of small populations (Gerrodette & Gilmartin 1990, Gazo et al 2000, Prugnolle et al 2003, Dendrinos et al 2007), but, in our case, more data are necessary to investigate recruitment processes. Further approaches, such as radio or satellite tagging of juveniles or integrated population modelling, might be useful to estimate the missing parameters, i.e.…”

Section: Discussionmentioning

confidence: 99%

Population resilience of the Mediterranean monk seal Monachus monachus at Cabo Blanco peninsula

Martínez‐Jauregui¹,

Tavecchia²,

Cedenilla³

et al. 2012

Mar. Ecol. Prog. Ser.

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Environmental and demographic stochasticity alone can push small populations to extinction. However, some small populations can persist for a long time at a low density, maintaining potential for rapid growth. We investigated the demographic mechanisms underlying the response of the population of the Mediterranean monk seal Monachus monachus on the Cabo Blanco peninsula (Mauritania/Morocco). The population was dramatically reduced after a demographic crash in 1997, which was initially thought to have pushed the population toward extinction. Census data, individual-based data on presence−absence and breeding state data were obtained by direct observation, by photo-identification and through the analysis of video images at the only known breeding sites for the species. We found that the monk seal population at Cabo Blanco is recovering, with means of 31 (24.8, 36.8) sub-adults, 46 (42.3, 49.7) adult females and 39 (29.1, 48.4) adult males using the 2 breeding sites in 2007. The population structure is similar to proportions prior to the mass mortality event. Annual survival probabilities for sub-adults, adult females and adult males were 0.81 (0.676 to 0.904), 0.99 (0.926 to 0.998) and 0.87 (0.81 to 0.94), respectively. At present, juvenile survival is unknown, but the high survival of females and the high breeding potential are likely to be responsible for the population recovery.

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First-year and adult survival of the endangered Lesser KestrelFalco naumanniin southern France

Cited by 23 publications

References 13 publications

Effects of Nest and Colony Features on Lesser Kestrel (Falco naumanni) Reproductive Success

Effects of Nest and Colony Features on Lesser Kestrel (Falco naumanni) Reproductive Success

Habitat- and density-dependent demography of a colonial raptor in Mediterranean agro-ecosystems

Population resilience of the Mediterranean monk seal Monachus monachus at Cabo Blanco peninsula

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