Factors affecting the spatial distribution and breeding habitat of an insular cliff-nesting raptor community

Rodríguez, Beneharo; Rodríguez, Airam; Sivério, Felipe; Siverio, Manuel

doi:10.1093/cz/zox005

Cited by 33 publications

(10 citation statements)

References 55 publications

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“…This clearly suggests that regions with relatively consistent NDVI values were more likely to have vulture occupancy than regions with strong seasonal variation in NDVI. Lower elevation was also identified as a likely factor defining the distribution of the Egyptian vultures globally, and this has also been reported in several local studies 4 , 11 , 53 .…”

Section: Discussionsupporting

confidence: 67%

“…This is the first attempt to describe the global distribution of the Egyptian vulture and the factors related to this distribution. Previous studies have largely focused on descriptions in restricted parts of its range and the factors influencing its local distribution, with much of this work occurring in Spain 7 , 9 , 10 , 12 , 33 – 38 , eastern Europe 2 , 5 , 14 , 39 – 44 , the Mediterranean 10 , 45 – 49 , the Canary Islands 8 , 50 – 53 West Africa 54 , East Africa 4 , 6 , 13 , 55 , and South Asia (particularly India and Nepal; 3 , 11 , 56 , 57 ). Here, we show that the potential range of this species is considerably larger than can be determined from the local studies (~ 6.6 million km 2 ) across Africa, Asia and Europe.…”

Section: Discussionmentioning

confidence: 99%

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Factors influencing the global distribution of the endangered Egyptian vulture

Panthi

Pariyar

Low

2021

Sci Rep

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Vultures are ecologically important primarily because of their scavenging role in cleaning carcasses of the environment. Because of anthropogenic impacts, the Egyptian vulture (Neophron percnopterus) has suffered catastrophic declines in parts of its range and, thus, information about its global distribution and factors influencing its occurrence within this range are essential for its conservation. To this end, we estimated the global distribution of Egyptian vulture and variables related to this distribution. We used occurrence points (n = 4740) from online data sources and literature, environmental variables related to these sites and Maximum Entropy software to model the distribution of this species and its relationship to environmental variables during the entire year, breeding and overwintering. Out of ~ 49 million km2 study area, the Egyptian vulture had a predicted range of 6,599,508 km2 distributed across three continents: Africa, Asia and Europe. The densest distribution was in Southern Europe, India and Northern Africa and a sparser distribution was around Mid and Western Africa, the Middle East and Afghanistan. Climate was related to the vulture’s most probable range: in particular medium temperature seasonality and low precipitation during the coldest yearly quarter were important variables regardless of the season of observations examined. Conservation of identified habitats and mitigation of anthropogenic impacts to conserve these vultures are recommended for immediate and long-term conservation of the Egyptian vulture globally.

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Section: Discussionsupporting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Factors influencing the global distribution of the endangered Egyptian vulture

Panthi

Pariyar

Low

2021

Sci Rep

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“…Island raptor populations show life history traits of the so‐called ‘insular syndrome', that is, density compensation, wider niche breath, lower breeding rates, higher survival and lack of migratory behaviour (Thibault et al 1992, Thiollay 1998, Donázar et al 2002, Sanz‐Aguilar et al 2015, Rodríguez et al 2018). Thus these small, isolated and/or threatened island populations may respond differently to fragmentation and habitat changes due to their particular life history traits (Salvador and Ibanez 2006, Trevino et al 2007, Woolaver et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Exotic tree plantations as alternative breeding habitat for an endemic avian predator

Rodríguez¹,

Rodríguez

Lorenzo³

et al. 2021

Journal of Avian Biology

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Forest-dwelling raptors living on islands are more vulnerable than continental relatives due to their particular life history traits and habitat degradation. The Canary Islands' forests have suffered severe transformations because of intense human exploitation since its colonization by the Europeans. In recent decades, forest managers have initiated actions to restore the original ecosystems. Consequently, gathering knowledge on the relationships between habitat and reproduction output of forest species is essential to develop long-term conservation actions. Here, we explore the suitability of exotic tree plantations as breeding habitat for an island endemic raptor, the Macaronesian sparrowhawk Accipiter nisus granti. We monitored territories distributed in three main forest types, two native (laurel forest and Canarian pinewood) and one composed of exotic trees. We assessed breeding density, characterized nesting habitat at macro-, micro-habitat and nest tree levels, and estimated breeding parameters in the three forests. We evaluated habitat selection and its potential relationship with breeding parameters, as well as nest structure survival in native versus exotic tree species. Density was higher in exotic forests and habitat features differed among forests at three spatial scales. Sparrowhawks used areas with high cover of exotic trees, with high trees, far away from human settlements and at low altitudes. All models testing for differences in breeding success and productivity among the forest types were not significant, but the percentage of successful pairs was slightly higher in exotic tree plantations than in native forests. Nest structures located in exotic trees showed a higher annual survival than those placed in native trees. Our results indicate that exotic plantations are a secure nesting habitat and therefore forestry practices, including those aiming to eradicate exotic trees, must be carefully planned to avoid nest destruction or disturbance in occupied forest patches.

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“…The protection of large raptors often requires the preservation of extensive natural areas where there has been little anthropic disturbance [52,53]. However, human-transformed habitats such as the rural Andean landscapes of Colombia [54,55] can provide habitat for the species that may tolerate some degree of anthropic disturbances [4,5].…”

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confidence: 99%

Human-raptor conflict in rural settlements of Colombia

et al. 2020

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In human-transformed landscapes, predators may feed on domesticated animals, and thus affect human well-being, creating negative perceptions and leading to conflict with people that can result in the persecution of the predator. We studied the factors that influence the perception of the Black-and-chestnut Eagle (Spizaetus isidori) in four rural Andean communities in Colombia and compiled historical and recent evidence on the persecution and other causes of mortality of this species in the country. We applied 267 questionnaires and conducted 16 interviews with local inhabitants, via visits to homes and schools in the surroundings of S. isidori nests. The perception of S. isidori by the inhabitants was largely negative and influenced by different socio-demographic factors such as gender, chicken (Gallus gallus) ownership, and chicken management. The records we obtained indicate that 47 eagles were shot, 16 were captured (three for illegal trafficking) and two were electrocuted on hightension wires. The persecution of S. isidori occurs as retaliation or as a preventative measure against chicken predation, and is a significant cause of mortality of this species in Colombia. Effective conservation planning for S. isidori in Colombia needs to go further than the protected areas system, and include a socioecological perspective in conservation practices applied at landscapes scales that are dominated by people. Education programs and socioecological research, along with participatory work in local communities are key to the conservation of S. isidori in breeding territories. This approach can also prevent conflict over food resources-G. gallus and other poultry-that are shared by humans and S. isidori in rural landscapes.

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Factors affecting the spatial distribution and breeding habitat of an insular cliff-nesting raptor community

Cited by 33 publications

References 55 publications

Factors influencing the global distribution of the endangered Egyptian vulture

Factors influencing the global distribution of the endangered Egyptian vulture

Exotic tree plantations as alternative breeding habitat for an endemic avian predator

Human-raptor conflict in rural settlements of Colombia

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