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Juan José Iglesias-Lebrija

Juan José Iglesias-Lebrija

About

25
Publications
5,794
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143
Citations
Citations since 2017
19 Research Items
133 Citations
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20172018201920202021202220230102030405060
20172018201920202021202220230102030405060

Publications

Publications (25)
Poster
Full-text available
One of the objectives of a wildlife recovery center (WRC) is to rehabilitate animals in such a way that they are capable of adapting to their natural environment. However, the viability of these animals is still unknown for a large number of spe�cies. In recent years, the GREFA recovery center has begun to develop animal monitoring experiences that...
Chapter
Full-text available
As mentioned in previous chapters, electrocution can occur in two ways: by contact between two conductors or, more frequently, by contact between a conductor and an earthed metallic structure (the crossarm itself or a ground wire), and birds are among the groups most seriously affected (Figures 88 and 89). Given the distance between supports, the s...
Article
Full-text available
Calls for urgent action to conserve biodiversity under global change are increasing, and conservation of migratory species in this context poses special challenges. In the last two decades the Convention on the Conservation of Migratory Species of Wild Animals (CMS) has provided a framework for several subsidiary instruments including action plans...
Preprint
Islands are key areas for biodiversity; however, they are extremely sensitive to anthropic actions. This has led to local species extinctions, especially large predators such as raptors. Consequently, reintroduction and conservation projects aimed at reversing population decline of endangered species have recently gained popularity. Nevertheless, t...
Article
Full-text available
Los centros de tratamiento o vertederos de resi-duos sólidos urbanos siempre han despertado in-quietud por los problemas ambientales que produ-cen. Tradicionalmente los efectos más directos que se han valorado han sido la contaminación de las aguas y del aire y el impacto paisajístico. En la actualidad, tras el aumento de la utilización de es-tos l...
Article
Full-text available
In June 2021, the first African white-backed vulture was tagged with a GPS transmitter in the Western Palearctic. The capture and release site was CRV-Jbel Moussa in Northern Morocco. After several weeks of wandering, the bird crossed the Sahara Desert in August, possibly accompanied by other migratory group of raptors. During its southbound travel...
Poster
Full-text available
During a decade (2011-2020), GREFA (Group for the Rehabilitation of Native Fauna) collected data derived from the GPS tracking of 48 red kites (Milvus milvus, Linnaeus, 1758) in the center of the Iberian Peninsula. Within that sample we found 20 individuals that were rehabilitated in the wildlife hospital of the same organization, and that were rel...
Poster
Full-text available
A total of 53 individuals of 14 different species have been tagged. 14 of these individuals died, 4 disappeared and 27 remained alive for more than 3 months. Although G.E. Duke et al. (1981) considered "6 weeks of survival to be a minimum standard of success" (p.4), we believe that at least 12 weeks of survival are needed to assume a total incorpor...
Article
Full-text available
RESUMEN La principal causa de mortalidad del águila perdicera es la electrocución, que se produce sobre todo durante su periodo de dispersión juvenil. España es un país a la vanguardia en la lucha contra este problema; en el año 2008 se publicó el Real Decreto 1432/2008 por el que se establecieron medidas para mitigar la electrocución y colisión de...
Article
Diclofenac is a non-steroidal anti-inflammatory drug (NSAID) with a well-known toxicity for old world vultures that ingest the carrion of domestic animals treated with it. Diclofenac intoxication was directly related to the dramatic declines in the populations of three native South Asian Gyps vulture species two decades ago. In 2013, this NSAID was...
Article
Full-text available
1. Long-distance migrations are among the most physically demanding feats animals perform. Understanding the potential costs and benefits of such behaviour is a fundamental question in ecology and evolution. A hypothetical cost of migration should be outweighed by higher productivity and/or higher annual survival, but few studies on migratory speci...
Article
Tagging wildlife with transmitters is one of the most widely used techniques for research and monitoring. Knowing the possible impact of attaching transmitters to an animal has always concerned researchers; however, most assessments have been directed at the effects of transmitters on behaviour and fitness, and less on possible injuries on the indi...
Preprint
Full-text available
Islands are key areas for biodiversity; however, they are extremely sensitive to anthropic actions. This has led to local species extinctions, especially large predators such as raptors. Consequently, reintroduction and conservation projects aimed at reversing population decline of endangered species have recently gained popularity. Nevertheless, t...
Poster
Full-text available
AQUILA a-LIFE wants to increase the presence of Bonelli´s eagle (Aquila fasciata) in the Western Mediterranean and reverse the declining trend of its population. This project could be considered as the second part of LIFE BONELLI because the reintroduction and reinforcement of wildlife projects often requires several stages for development. The fir...
Article
Full-text available
Disentangling individual-and population-level variation in migratory movements is necessary for understanding migration at the species level. However, very few studies have analyzed these patterns across large portions of species' distributions. We compiled a large telemetry dataset on the globally endangered Egyptian Vulture Neophron percnopterus...
Chapter
Full-text available
Madrid's black vulture population in 2017 is divided into six nesting areas distributed in the north and west of the community: Alto Lozoya, Bajo Lozoya, Cuenca Alta del Manzanares, Sierra de La Cabrera, Alberche Basin and Valdemaqueda. In 2017, 187 black vulture platforms were located in the Community of Madrid, of which 148 were occupied by pairs...
Chapter
Full-text available
El número de parejas de águila perdicera ha experimentado una ligera mejoría en la Comunidad de Madrid desde el anterior censo (2006). Este hecho se ha producido gracias a las liberaciones de la especie que se han producido en el marco del proyecto Life Bonelli y a la mitigación de sus amenazas, principalmente las electrocuciones.
Chapter
Full-text available
Por primera vez en un proyecto de este tipo se han marcado con emisores todos los ejemplares que se han liberado (n=92). Paralelamente, se han equi-pado con el mismo tipo de localizadores todos los pollos "silvestres" descendientes de ejemplares liberados, junto a otros de parejas instaladas en zonas donde se está realizando el proyecto LIFE Bonell...
Article
Full-text available
Las nuevas técnicas de rehabilitación en fauna salvaje mejoran la adaptación al medio de ejemplares heridos. La fisioterapia es una de las técnicas que mejores resultados proporcionan. El presente estudio muestra diferentes aspectos dispersivos (dispersión natal, dispersión reproductiva, movimientos diferenciales entre individuos reproductores/no r...
Article
Full-text available
Recent population trends of the houbara bustard in the Canary Islands. Methods and conservation status Determining conservation status requires rigorous and reliable data about population sizes and trends, especially if they have to be applied to islands where the species have small populations. The Canary bustard houbara (Chlamydotis undulata fuer...
Article
Full-text available
Determining conservation status requires rigorous and reliable data about population sizes and trends, especially if they have to be applied to islands where the species have small populations. The Canary bustard houbara (Chlamydotis undulata fuertaventurae) is catalogued as 'in danger' by the Red Book of the Birds of Spain. This work analyzes the...
Article
Full-text available
El acuciante descenso de la población ibérica de Águila-azor Perdicera (Aquila fasciata) lleva a pensar que la cría en cautividad y los proyectos de reforzamiento y reintroducción pueden ser un arma útil como medida de conservación para la especie. Con objeto de valorarla en la población de la especie en las sierras del suroeste de la Comunidad de...
Poster
Full-text available
GREFA is an NGO founded in 1981 and located in Madrid, Spain. In the beginning was a wildlife hospital and in 1994 founded a raptor breeding center. In this moment Bonelli's eagle, golden eagle, lesser kestrel, Eurasian black vulture.. are being breed in the center. Bonelli's eagle is listed endangered in Madrid, and the law 2/1991 sets the engagem...

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