Juan J. Negro
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View article: Bone weathering in a Mediterranean climate region: An experimental case study from Doñana National Park (Spain)
Bone weathering in a Mediterranean climate region: An experimental case study from Doñana National Park (Spain) Open
Bone weathering constitutes a highly informative and commonly studied variable in taphonomic analyses. Vertebrate paleontologists, zoo-archeologists and forensic anthropologists have used weathering as a taphonomic clock to ascertain the e…
View article: Lipid and carotenoid quantification in leatherback turtle eggs: insights into reproductive success and conservation
Lipid and carotenoid quantification in leatherback turtle eggs: insights into reproductive success and conservation Open
The role of egg nutrients in the embryonic development success of threatened marine reptiles remains relatively unexplored from a conservation perspective. This study assesses lipid and carotenoid profiles in leatherback turtle Dermochelys…
View article: Nocturnal camouflage through background matching against moonlight
Nocturnal camouflage through background matching against moonlight Open
Camouflage is often considered a daytime phenomenon based on light and shade. Nocturnal camouflage can also occur, but its mechanistic basis remains unclear. Here, we analyze the conditions for background matching (BM) of avian predators a…
View article: Assessing citizen science data quality for bird monitoring in the Iberian Peninsula
Assessing citizen science data quality for bird monitoring in the Iberian Peninsula Open
Citizen science data on biodiversity has experienced significant growth, largely driven by advancements in technology that facilitate data sharing. In recent years, mobile applications have provided a substantial boost to both the collecti…
View article: Groundwater Abstraction has Caused Extensive Ecological Damage to the Doñana World Heritage Site, Spain
Groundwater Abstraction has Caused Extensive Ecological Damage to the Doñana World Heritage Site, Spain Open
Acreman et al. (Wetlands 42:63, 2022) reviewed evidence for ecological damage to the Doñana wetlands (UNESCO World Heritage Site [WHS] and Ramsar site), Spain, associated with intensification of groundwater use, particularly for agricultur…
View article: New Insights into the Cosmetic Behaviour of Bearded Vultures: Ferruginous Springs Are Shared Sequentially
New Insights into the Cosmetic Behaviour of Bearded Vultures: Ferruginous Springs Are Shared Sequentially Open
Different hypotheses have been proposed to explain the function of cosmetic behaviour of bearded vultures, being the signalling individual dominance status the most accepted. However, no advances have been made in understanding this myster…
View article: The Enrichment of Specific Hair Follicle-Associated Cell Populations in Plucked Hairs Offers an Opportunity to Study Gene Expression Underlying Hair Traits
The Enrichment of Specific Hair Follicle-Associated Cell Populations in Plucked Hairs Offers an Opportunity to Study Gene Expression Underlying Hair Traits Open
Gene expression differences can assist in characterizing important underlying genetic mechanisms between different phenotypic traits. However, when population-dense tissues are studied, the signals from scarce populations are diluted. Ther…
View article: Generation of raptor diversity in Europe: linking speciation with climate changes and the ability to migrate
Generation of raptor diversity in Europe: linking speciation with climate changes and the ability to migrate Open
Europe holds a rich community of diurnal birds of prey, and the highest proportion of transcontinental migratory raptorial species of any landmass. This study will test the hypotheses that the high diversification of the raptor assemblage …
View article: Owl-like plaques of the Copper Age and the involvement of children
Owl-like plaques of the Copper Age and the involvement of children Open
In the Copper Age, slate engraved plaques were produced massively in the southwestern corner of the Iberian Peninsula. Researchers have speculated about the function of these palm-sized stone objects for more than a century, although most …
View article: Feral Animal Populations: Separating Threats from Opportunities
Feral Animal Populations: Separating Threats from Opportunities Open
Feral animals are those that live in the wild but are descendants of domesticated populations. Although, in many cases, these feral populations imply a demonstrable risk to the ecosystems in which they live and may conflict with local wild…
View article: Out of Africa: Juvenile Dispersal of Black-Shouldered Kites in the Emerging European Population
Out of Africa: Juvenile Dispersal of Black-Shouldered Kites in the Emerging European Population Open
Knowledge of animal dispersal patterns is of great importance for the conservation and maintenance of natural populations. We here analyze juvenile dispersal of the poorly studied Black-shouldered Kite (Elanus caeruleus) monitored in south…
View article: Development of a Fixed-Wing Drone System for Aerial Insect Sampling
Development of a Fixed-Wing Drone System for Aerial Insect Sampling Open
Most current insect research techniques are ground-based and provide scarce information about flying insects in the planetary boundary layer (PBL), which remains a poorly studied ecological niche. To address this gap, we developed a new in…
View article: The Dynamics of Lepus granatensis and Oryctolagus cuniculus in a Mediterranean Agrarian Area: Are Hares Segregating from Rabbit Habitats after Disease Impact?
The Dynamics of Lepus granatensis and Oryctolagus cuniculus in a Mediterranean Agrarian Area: Are Hares Segregating from Rabbit Habitats after Disease Impact? Open
The genera Oryctolagus and Lepus (order Lagomorpha) are essential elements in the trophic chain in the Iberian Peninsula, being the main prey of many predators, including some highly endangered predators such as the Iberian lynx (Lynx pard…
View article: Generation of raptor diversity in Europe: linking speciation with climate changes and the ability to migrate
Generation of raptor diversity in Europe: linking speciation with climate changes and the ability to migrate Open
Aim Europe should be considered as a diversity hotspot for diurnal raptors, but just during the breeding season, as it holds the higher proportion of transcontinental migratory species of any landmass, and the area becomes depleted during …
View article: Leucistic plumage as a result of progressive greying in a cryptic nocturnal bird
Leucistic plumage as a result of progressive greying in a cryptic nocturnal bird Open
Leucism, broadly defined as the lack of melanin pigmentation, occurs in many animal species. Most studies on leucism and other colour aberrations are based on opportunistic observations or small cross-sectional samples, thus limiting our a…
View article: Tracking Flights to Investigate Seabird Mortality Induced by Artificial Lights
Tracking Flights to Investigate Seabird Mortality Induced by Artificial Lights Open
Light pollution causes attraction and/or disorientation of seabirds, leading to mortality events due to multiple threats. This is a poorly understood phenomenon, largely because of the challenge to track seabirds at night from their nests …
View article: Night Capture of Roosting Cave Birds by Neanderthals: An Actualistic Approach
Night Capture of Roosting Cave Birds by Neanderthals: An Actualistic Approach Open
Evidence is accumulating on the regular and systematic Neanderthal exploitation of birds. However, the motivations, mechanisms, and circumstances underlying this behavior remains little explored despite their potential implications on Nean…
View article: Integumentary Colour Allocation in the Stork Family (Ciconiidae) Reveals Short-Range Visual Cues for Species Recognition
Integumentary Colour Allocation in the Stork Family (Ciconiidae) Reveals Short-Range Visual Cues for Species Recognition Open
The family Ciconiidae comprises 19 extant species which are highly social when nesting and foraging. All species share similar morphotypes, with long necks, a bill, and legs, and are mostly coloured in the achromatic spectrum (white, black…
View article: Interspecific sexual selection, a new theory for an old practice: the increase of artificial biodiversity through creation of modern, standardized breeds
Interspecific sexual selection, a new theory for an old practice: the increase of artificial biodiversity through creation of modern, standardized breeds Open
Darwin set the pillars of organismic evolution when he defined natural and sexual selection in the 19th century. Concurrently, a frenzy of selective breeding programmes, generally supported by the wealthy and aristocratic, gave rise to nov…
View article: Feathers turn grey: cross-sectional and longitudinal data from red-necked nightjars
Feathers turn grey: cross-sectional and longitudinal data from red-necked nightjars Open
This data set includes measurements of the prevalence of unpigmented (leucistic) feathers in red-necked nightjars (Caprimulgus ruficollis). Data on date of capture, sex, age, presence-absence of leucistic feathers and body size of each ind…
View article: Additional file 1 of A QTL for conformation of back and croup influences lateral gait quality in Icelandic horses
Additional file 1 of A QTL for conformation of back and croup influences lateral gait quality in Icelandic horses Open
Additional file 1.
View article: Renewables in Spain threaten biodiversity
Renewables in Spain threaten biodiversity Open
Peer reviewed
View article: Taphonomic information from the modern vertebrate death assemblage of Doñana National Park, Spain
Taphonomic information from the modern vertebrate death assemblage of Doñana National Park, Spain Open
Modern death assemblages provide insights about the early stages of fossilization and useful ecological information about the species inhabiting the ecosystem. We present the results of taphonomic monitoring of modern vertebrate carcasses …