Beatriz Martinez Miranzo

Complutense University of Madrid | UCM · Facultad de Ciencias Biológicas

Landscape transformation by humans through habitat degradation, agriculture intensification and urbanization results in the loss of natural feeding areas. However, populations of certain species have adapted to these changes and benefit from some anthropogenic food sources as well as an absence of predators and milder environmental conditions in ur...

Urbanization is often associated with homogenization, including the homogenization of biodiversity and overpopulation by generalist species that can change community and disease dynamics. In Madrid, nestlings of Eurasian Scops Owl (Otus scops) frequently suffer Necrotic Oropharyngeal Disease as a result of infection by Gongylonema sp., a parasitic...

Bonelli’s eagle (Aquila fasciata) had become extirpated in parts of their Mediterranean distribution, such as on Mallorca Island (Balearic Islands, Spain). Thanks to reintroduction programs, a new breeding population was reintroduced to the island, between 2011 and 2017. To identify movement patterns within the island, we equipped each reintroduced...

Given the vital role of power lines for social development, the rapid spread of such infrastructure worldwide and the fact that power lines can be one of the main causes of direct mortality for several species of birds and other wildlife, including mammals, it is essential to have suitable tools to ensure that these lines are built and maintained i...

Diurnal birds of prey are the predominant apex avian predators for most terrestrial ecosystems. Besides the role they play as top predators on food webs, raptors are also among the most susceptible species to the negative effects of habitat transformations and human perturbations, in part due to their large habitat requirements, low population dens...

The Blue-and-yellow macaw (Ara ararauna) is a charismatic and easily recognized species. In Brazil, this macaw is strongly linked to a key habitat, the Cerrado biome, which is a predominantly dry forest savanna. Ara ararauna occurs and breeds in the city of Rondonópolis, a medium-sized city located in Mato Grosso, in the Central-West Region of Braz...

Unmasking the ecological processes responsible for the dynamics of a population is a necessary step toward understanding its threats and viability. We examined a fitness proxy (reproductive success) of an endangered raptor in relation to its ecological niche and spatial distribution to provide insights into the dynamics and potential threats to the...

Ríos, bañados, lagunas y efímeros charcos son lugares preciados por los animales, especialmente en la áridez de la ecorregión del Monte. También los llamados "tanques australianos" son fuentes de agua, pero pueden transformarse en verdaderas trampas mortales. Se están implementando algunas soluciones.

Prey abundance is one of the limiting factors for establishment a home range. In particular, biomass abundance could act as a key element for generalist top predators, with wide prey type spectrum, for establishing their home ranges. We studied if biomass abundance may act as a limiting factor for the establishment of home range in a generalist top...

The habitat selection of 14 individual breeding Bonelli’s eagles equipped with satellite tracking devices was evaluated using a multiscale approach during different periods of the annual cycle over 8 years. We studied whether habitat structure and prey availability influence habitat use through the use of vegetation templates and censuses of potent...

In recent years, long-term studies based on movement monitoring tools have improved our knowledge about spatial ecology and home range behaviour of endangered species. In order to study individual spatial–temporal variations in size, use and fidelity of home ranges and other spatial parameters (kernel at different levels), and determine the influen...

Bonelli's eagle (Aquila fasciata) populations have suffered an intense decline in Europe in recent years. The study by satellite telemetry locations of the breeding adults' movements in different periods of the annual cycle over the years could provide new information about home ranges and spatial fidelity. New conservation guidelines using this me...

Uno de los mejores índices para medir el nivel de industrialización de un país es la extensión y cobertura de sus infraestructuras lineales. No obstante, suelen tener asociados una serie de costes medioambientales. Los tendidos eléctricos, presentan una serie de impactos potenciales, tales como alteraciones visuales, contaminación atmosférica, camb...

Uno de los mejores índices para medir el nivel de industrialización de un país es la extensión y cobertura de sus infraestructuras lineales. No obstante, suelen tener asociados una serie de costes medioambientales. Los tendidos eléctricos, presentan una serie de impactos potenciales, tales como alteraciones visuales, contaminación atmosférica, camb...