Reevaluating the Cost of Natal Dispersal: Post-Fledging Survival of Red-bellied Woodpeckers

Cox, Allison; Kesler, Dylan C.

doi:10.1525/cond.2012.110070

Cited by 22 publications

(2 citation statements)

References 48 publications

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“…Contrarily, females dispersing farther reduced their survival prospects compared to females staying closer and males. Thus, the reproductive benefits associated with large natal dispersal in females are outweighed by its survival costs [87,88,89]. This, along with the benefits obtained by males that stay close to natal areas, explain the low dispersal distances observed in the whole population.…”

Section: Survival Model Detection Probabilitymentioning

confidence: 99%

Sex, personality and conspecific density influence natal dispersal with lifetime fitness consequences in urban and rural burrowing owls

et al. 2020

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There is a growing need to understand how species respond to habitat changes and the potential key role played by natal dispersal in population dynamics, structure and gene flow. However, few studies have explored differences in this process between conspecifics living in natural habitats and those inhabiting landscapes highly transformed by humans, such as cities. Here, we investigate how individual traits and social characteristics can influence the natal dispersal decisions of burrowing owls (Athene cunicularia) living in urban and rural areas, as well as the consequences in terms of reproductive success and apparent survival. We found short dispersal movements among individuals, with differences between urban and rural birds (i.e., the former covering shorter distances than the latter), maybe because of the higher conspecific density of urban compared to rural areas. Moreover, we found that urban and rural females as well as bold individuals (i.e., individuals with shorter flight initiation distance) exhibited longer dispersal distances than their counterparts. These dispersal decisions have effects on individual fitness. Individuals traveling longer distances increased their reproductive prospects (productivity during the first breeding attempt, and long term productivity). However, the apparent survival of females decreased when they dispersed farther from their natal territory. Although further research is needed to properly understand the ecological and evolutionary consequences of dispersal patterns in transformed habitats, our results provide information about the drivers and the consequences of the restricted natal movements of this species, which may explain its population structuring through restricted gene flow between and within urban and rural areas.

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Section: Survival Model Detection Probabilitymentioning

confidence: 99%

Sex, personality and conspecific density influence natal dispersal with lifetime fitness consequences in urban and rural burrowing owls

et al. 2020

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“…This hotspot has been highly threatened by historic deforestation in the last centuries on the lowlands and low-slope hills, leading to a discontinuity of the forest between the two mountain ranges dominating the south-central part of Chile ( Fig.1; Olson et al 2001, Otero 2006. Consequently, Nahuelbuta is now an island of relatively continuous old-growth forest within a heavily fragmented region in the Nahuelbuta mountain range; extensive stretches of unsuitable habitat separate Nahuelbuta from mature forests in the Andes ( Fig.1; Dinerstein et al 1995, Cox andKesley 2012).…”

Section: Introductionmentioning

confidence: 99%

Deforestation patterns shape population structure of the Magellanic Woodpecker (Campephilus magellanicus) in southern Chile

Poblete¹,

Soto²,

Campagna³

et al. 2020

ACE

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One important landscape-scale consequence of deforestation is reduced connectivity, which has the potential to isolate populations in ways that affect genetic diversity and population structure. Among the many regions of the world where this scenario has played out is the South American temperate forest (SATF) in southern Chile, and there is now strong concern about the population viability of forest taxa. We studied one such species, the Magellanic Woodpecker (Campephilus magellanicus), a forest specialist that is now listed as vulnerable in parts of its range in Chile. We characterized genetic variability and population structure from 33 samples of Magellanic Woodpeckers from two large but isolated populations in Nahuelbuta National Park in the Coastal mountain range and the Conguillío National Park in the Andes using ddRAD-seq method. We found lower genetic variability in Nahuelbuta than Conguillío, but inbreeding values (FIS) did not show evidence for inbreeding depression. Results suggest the presence of two genetic clusters, with an average FST value of 0.04. Phylogenetic analysis showed that the Nahuelbuta population forms a clade that is nested within the individuals from Conguillío, suggesting limited gene flow between these populations. Our results support the idea that extensive deforestation has played a role in shaping the genetic patterns that we have identified. Because of this, we emphasize the need for regional planning to increase the structural connectivity between fragments of mature native forests, to provide an opportunity for the persistence of Magellanic Woodpeckers in this region. Les modèles de déforestation façonnent la structure de la population du Pic de Magellan (Campephilus magellanicus) dans le sud du Chili RÉSUMÉ. Une conséquence importante de la déforestation à l'échelle du paysage est la diminution de la connectivité, qui peut à son tour entraîner l'isolement des populations jusqu'à affecter leur diversité génétique et leur structure. La Forêt tempérée d'Amérique du Sud dans le sud du Chili figure parmi les nombreuses régions du monde où ce scénario s'est produit, et on s'inquiète désormais fortement de la viabilité des populations des taxons forestiers qui s'y trouvent. Nous avons étudié une de ces espèces, le Pic de Magellan (Campephilus magellanicus), spécialiste des forêts maintenant classé comme vulnérable dans certaines parties de son aire de répartition au Chili. Nous avons caractérisé la variabilité génétique et la structure de la population à partir de 33 échantillons de Pics de Magellan provenant de deux populations importantes mais isolées, dans le parc national de Nahuelbuta dans la chaîne de montagnes côtières et dans le parc national de Conguillío dans les Andes au moyen de la méthode ddRAD-seq. Nous avons trouvé une variabilité génétique plus faible à Nahuelbuta qu'à Conguillío, mais les valeurs de consanguinité (FIS) n'ont pas montré de signes de dépression de la consanguinité. Nos résultats indiquent la présence de deux groupes génétiques et une valeur FIS moyen...

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Prescribed take levels of downy and hairy woodpeckers in the eastern United States

et al. 2022

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Hairy (Dryobates villosus) and downy (Dryobates pubescens) woodpeckers occur in high densities in residential areas of the eastern United States. In many areas of their range, they cause damage to wooden structures through foraging, excavation of nesting cavities, and drumming behaviors, causing requests for allowable take permits. Both species hold year‐round territories, which could make them vulnerable to local extirpation with excess take. To meet the requirements of the Migratory Bird Treaty act, the United States Fish and Wildlife Service (USFWS) requested scientifically informed evaluation of take to minimize population effects as part of its approach to reduce human–wildlife conflict. We used a prescribed take approach, which uses data from population, demographic, and management parameter estimates to determine the allowable take from Louisiana to Minnesota and all states east. Furthermore, we used 2 different methods of estimating growth rates to control for demographic uncertainties. The resulting estimates provide take at the state and USFWS regional scales to improve stakeholder choices when setting allowable take. Current authorized take (2016–2018) is below the take that could be sustained by current populations, and current rates of take are not likely to cause population‐level effects. These results were largely consistent across methodologies for calculating the rate of growth for both species. Take still needs to be managed to prevent local extirpation of these resident species. Allowable take estimates should be periodically updated to reflect changing management and population needs for both species.

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Reevaluating the Cost of Natal Dispersal: Post-Fledging Survival of Red-bellied Woodpeckers

Cited by 22 publications

References 48 publications

Sex, personality and conspecific density influence natal dispersal with lifetime fitness consequences in urban and rural burrowing owls

Sex, personality and conspecific density influence natal dispersal with lifetime fitness consequences in urban and rural burrowing owls

Deforestation patterns shape population structure of the Magellanic Woodpecker (Campephilus magellanicus) in southern Chile

Prescribed take levels of downy and hairy woodpeckers in the eastern United States

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