Javier Elorriaga

ORCID: 0000-0003-3254-7329
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About
Contact & Profiles
Research Areas
  • Avian ecology and behavior
  • Wildlife Ecology and Conservation
  • Animal Behavior and Reproduction
  • Mediterranean and Iberian flora and fauna
  • Genetic diversity and population structure
  • Marine and fisheries research
  • Archaeological and Historical Studies
  • Bird parasitology and diseases
  • Fish Ecology and Management Studies
  • Species Distribution and Climate Change
  • Survey Sampling and Estimation Techniques
  • Marine and coastal plant biology
  • Historical Art and Architecture Studies
  • Isotope Analysis in Ecology
  • Amphibian and Reptile Biology
  • Toxic Organic Pollutants Impact
  • Archaeological and Geological Studies
  • Environmental Conservation and Management
  • Wildlife Conservation and Criminology Analyses
  • Media and Digital Communication
  • Genetic and phenotypic traits in livestock
  • Remote Sensing and LiDAR Applications
  • Economic and Environmental Valuation
  • Mercury impact and mitigation studies
  • Cultural Industries and Urban Development

Fundación Marques de Valdecilla
2009-2013

Euskadiko Parke Teknologikoa
2009

During recent decades the Osprey population in Europe has grown and expanded, partly as a result of reintroduction. 2013–17 reintroduction programme was conducted Bay Biscay. We describe autumn movements 12 GPS-tracked young Ospreys, survival translocated Ospreys. Using our external data, we compare rates between satellite-tracked Ospreys those simply ringed discuss potential negative effects satellite devices. Satellite-tagged used similar flyways settled usual sub-Saharan wintering region...

10.1080/03078698.2025.2458256 article EN Ringing & Migration 2025-02-27

Range expansions driven by climate change are increasingly documented, particularly in birds. The House Bunting, a species native to North Africa, has recently established the first confirmed breeding population mainland Europe, Algeciras, southern Spain. This study presents results of systematic census this population, conducted December 2024. Using standardized survey method across grid hexagonal sampling units, we recorded minimum 18 individuals, including juveniles, indicating both...

10.20944/preprints202503.0552.v1 preprint EN 2025-03-07

The Eurasian black vulture (Aegypius monachus) has experienced a severe decline during the last two centuries and is globally classified as near-threatened. This led to extinction of many traditional breeding areas in Europe resulted present patchy distribution (Iberian Balkan peninsulas) Western Palearctic. In study, we describe current genetic status European populations using both mitochondrial cytochrome b sequences nuclear microsatellite markers, comparing with those found Asia...

10.1111/j.1095-8312.2008.01099.x article EN Biological Journal of the Linnean Society 2008-11-19

Molt patterns are poorly understood in most large bird species; however, they of paramount importance the development surveys which age is a key parameter. From 2000 to 2011, we studied body condition and molt 214 Griffon Vultures (Gyps fulvus) Spain. Adult ("griffons") demonstrated poor winter during incubation period, then improved after hatching. Conversely, subadults were fairly uniform throughout year, with their slightly inferior that adults year (except period). The period lasted from...

10.3356/jrr-12-09.1 article EN Journal of Raptor Research 2013-09-01

Primary goal of this study was to facilitate the management and conservation Eurasian black vulture (Aegypius monachus) population on a larger scale than Dadia‐Lefkimi‐Soufli National Park (Dadia NP). Range use pattern studied using an integrated radio‐tracking methodology. Various home range (HR) parameters were estimated for breeding (BS) non‐breeding (NBS) season minimum convex polygon fixed kernel estimators incremental cluster analysis. comparisons made within between two seasons...

10.1080/00222930701835308 article EN Journal of Natural History 2008-02-01

The population of the Eurasian black vulture in Dadia National Park was nearly extinct 1979 (26 individuals and 4–5 pairs) since 1988 it has been only breeding Greece Balkans. During period 1987–2005, number pairs increased from 6 to 22. protection nesting sites establishment one supplementary feeding site could have contributed positively this increase. Overall, during 1994–2005 remained stable but success showed a significant decrease. period, two remarkable drops were recorded 1995–1997...

10.1080/00222930701835290 article EN Journal of Natural History 2008-02-01

La filopatría y la capacidad de dispersión representan aspectos interrelacionados, variables determinantes las dinámicas poblacionales una especie. No obstante, información disponible sobre estos procesos es escasa para especies amenazadas como Neophron percnopterus debido a dificultades logísticas que implican estudios. Esta especie considerada altamente filopátrica, cual se han descrito distancias medias aproximadamente 20 km. Presentamos el primer caso documentado efectiva gran distancia...

10.3356/jrr-08-53.1 article ES Journal of Raptor Research 2009-06-01

Las poblaciones de aves marinas migratorias han sufrido un fuerte descenso en las últimas décadas. El seguimiento sus movimientos migratorios desde lugares estratégicos supone una herramienta gran utilidad para entender su fenología y estimar el tamaño poblaciones. Durante los periodos otoño 2020 primavera 2021, realizamos censos dos especies álcidos, alca común Alca torda frailecillo atlántico Fratercula arctica, punto costero estratégico (la isla Tarifa estrecho Gibraltar), contabilizando...

10.13157/arla.69.2.2022.sc4 article ES Ardeola 2022-07-14

Natural hybridisation in Old World buzzards (Buteo) is an uncommon phenomenon with important ecological implications. This genus constitutes intricate radiation of genetically poorly differentiated raptors whose taxonomic classification a frequent subject debate. We report the first case successful between African subspecies Long-legged Buzzard Buteo rufinus cirtensis and Common buteo new contact zone Strait Gibraltar (southern Spain). The hybrid offspring showed mixed characters from...

10.2989/00306525.2013.772922 article EN Ostrich 2013-03-01
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