Eloy Revilla

Eloy Revilla
Estación Biológica de Doñana · Biologia de la Conservacion

About

317
Publications
96,085
Reads
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13,842
Citations
Additional affiliations
January 2002 - present
Spanish National Research Council
Position
  • Estacion Biologica de Doñana
January 1999 - December 2001
Helmholtz-Zentrum für Umweltforschung

Publications

Publications (317)
Preprint
Long-term approaches are needed to accurately assess the magnitude of biodiversity change. Mining historical documents that include wildlife citations is a promising approach to describe past species distributions and derive conservation baselines. However, historical species records have multiple biases (just as contemporary ones) and ignoring the...
Article
Full-text available
Assessing the road effects on biodiversity is challenging because impacts may depend on both wildlife responses to roads and on the spatial arrangement of roads. We questioned whether an increase in road encroachment leads to significant changes in species occurrence and community composition. Using a large citizen-science dataset of point-counts p...
Article
Full-text available
Mammalian carnivores may be important agents of prehistoric bone accumulations. Taphonomic analyses of bone assemblages used for specific assignment usually include information on feeding, breeding, denning and even defecating ecology of extant species. Here, we review literature for the Hyaenidae, Felidae and Canidae families of carnivores, focusi...
Article
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Rear‐edge alpine biodiversity is expected to suffer one of the largest ecological impacts due to current and foreseen climate change. For highly mobile and long‐living species, climate change might operate through a wide spectrum of demographic and ecological processes influencing population dynamics, which in turn affect local abundance and may ev...
Preprint
Full-text available
Assessing the road effects on biodiversity is challenging because impacts may depend on both wildlife responses to roads and on the spatial arrangement of roads. We questioned whether an increase in road encroachment i.e., the advancement of roads into non-urban areas, leads to significant changes (positive and negative) in species occurrence, and...
Article
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The wildcat is typically found in low densities. Here, we estimated wildcat abundance in cattle pastures interspersed between forests in northern Iberian Peninsula, and their patterns of intra-annual and daily use. We censused wildcats three times daily (morning, afternoon, and night) from a car during 4 years in summer season. We also carried out...
Article
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Dispersal is a key demographic process involving three stages: emigration, transience and settlement; each of which is influenced by individual, social and environmental determinants. An integrated understanding of species dispersal is essential for demographic modelling and conservation planning. Here, we review the dispersal patterns and determin...
Article
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Human encroachment into natural habitats is typically followed by conflicts derived from wildlife damage to agriculture and livestock. Spatial risk modelling is a useful tool to gain the understanding of wildlife damage and mitigate conflicts. Although resource selection is a hierarchical process operating at multiple scales, risk models usually fa...
Data
Supplementary material: De Gabriel Hernando, M., Fernández-Gil, J., Roa, I., Juan, J., Ortega, F., de la Calzada, F. and Revilla, E. 2021. Warming threatens habitat suitability and breeding occupancy of rear-edge alpine bird specialists. Ecography. 44:1191–1204.
Article
Full-text available
Alpine ecosystems are particularly vulnerable to climate change. For widely distributed alpine specialists, rear‐edge populations are disproportionately important; it is expected that climate change will reduce their occupancy ranges due to the loss of suitable habitats and connectivity among them. Using four alpine bird species inhabiting the sout...
Article
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Systematic road-kill surveys are useful to study the impact of roads on wildlife. However, they are time- and budget-consuming, so the use of non-systematic data in road ecology is currently gaining popularity (for instance, by environmental consultants). Some data sources such as atlases (i.e., compilations of species records from a given region),...
Article
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Felids and canids coexist along their ranges worldwide. Various interactions can occur between these carnivores, with multiple consequences such as demographic changes of competitors, or behavioural modifications in the use of the spatial, temporal or trophic niches. European wildcats (Felis silvestris silvestris) and red foxes (Vulpes vulpes) coex...
Article
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Chemical communication is important for many species of mammals. Male brown bears, Ursus arctos , mark trees with a secretion from glands located on their back. The recent discovery of pedal glands and pedal-marking at a site used for tree-rubbing led us to hypothesize that both types of marking form part of a more complex communication system. We...
Article
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Apex predators play important roles in ecosystem functioning and, where they coexist, intraguild interactions can have profound effects on trophic relationships. Interactions between predators range from intraguild predation and competition to facilitation through scavenging opportunities. Despite the increased availability of fine-scale GPS data,...
Book
El objetivo de este documento es proveer las herramientas necesarias para que el diseño de los seguimientos ambientales, la toma de datos y su posterior gestión garanticen la extracción de conclusiones robustas sobre la efectividad de las medidas de mitigación del efecto fragmentador de las vías de transporte. El uso de esas herramientas hará posib...
Chapter
Full-text available
Conflicts between humans and bears have occurred since prehistory. Through time, the catalogue of human–bear conflicts (HBC) has been changing depending on the values and needs of human societies and their interactions with bears. Even today, conflict situations vary among the eight species of bears and geographically across these species’ ranges....
Chapter
Brown bears Ursus arctos were historically persecuted and almost eradicated from southern Europe in the twentieth century as a result of hunting and direct persecution. The effects of human-induced mortality were exacerbated by other threats, such as habitat loss and fragmentation, due to the expansion of human populations. As a result, nowadays th...
Chapter
The media and scientific literature are increasingly reporting an escalation of large carnivore attacks on humans, mainly in the so-called developed countries, such as Europe and North America. Although large carnivore populations have generally increased in developed countries, increased numbers are not solely responsible for the observed rise in...
Article
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Red foxes, European wildcats and domestic cats share cattle pastures for hunting in La Pernía Valley, northern Spain. To understand the mechanisms that allow the coexistence of these mesopredators in a habitat characterized by its anthropogenic modifications, we recorded sightings of these species in pastures in the summers of 2016, 2017, 2018 and...
Article
Modern cars have an array of sensors that allow different objects to be recognized, including large and small animals. They thus have the potential to become a tool for monitoring biodiversity and improving driver safety. But to achieve this various challenges in computing, communications and privacy need to be addressed.
Article
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Monitoring visitor dynamics and their nature-based experiences is an important dimension in the conservation management of protected areas. In the current digital age, the content analysis of social media information is being increasingly used in such a context. However, research testing whether social media content analysis provides similar inform...
Article
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Group living is an important behavioral feature in some species of mammals, although somewhat uncommon in the Order Carnivora. Wolves Canis lupus are highly social and cooperative carnivores that live in family groups, i.e. packs. The number of wolves in a pack affects social, reproductive and predatory behavior, thus conditioning population dynami...
Article
Extinction risk is often associated with intrinsic species traits such as larger size, higher trophic level, narrower habitat niche or smaller distribution area. Despite this, fast extinctions can also occur in species that apparently do not exhibit any of these traits. The Andalusian Buttonquail (Turnix sylvaticus sylvaticus) is a critically endan...
Article
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Concern for megafauna is increasing among scientists and non-scientists. Many studies have emphasized that megafauna play prominent ecological roles and provide important ecosystem services to humanity. But, what precisely are ‘megafauna’? Here, we critically assess the concept of megafauna and propose a goal-oriented framework for megafaunal resea...
Article
Understanding the breeding cycle of wildlife is essential to afford conservation strategies. This is especially important for barely studied species and urgent for those at serious risk of extinction. The Andalusian Buttonquail is an endangered endemic of the Western Mediterranean, confined to a cultivated strip in the Moroccan Atlantic coast. We p...
Article
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In the “digital conservation” age, big data from Earth observations and from social media have been increasingly used to tackle conservation challenges. Here, we combined information from those two digital sources in a multimodel inference framework to identify, map, and predict the potential for nature's cultural contributions to people in two con...
Conference Paper
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Las carreteras son una de las infraestructuras humanas que generan un mayor impacto, siendo los atropellos de fauna su consecuencia más visible y estudiada. La ciencia ciudadana está ganando popularidad como una fuente de datos (también en la Ecología de Carreteras) que permite estudios a una escala de otra forma inabarcable. Existe un debate sobre...
Conference Paper
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Wildlife crossing structures are used to mitigate barrier effects and to reduce mortality. Many factors affect their effectivity, including typology, location and maintenance. The monitoring of the use of these structures is frequently legally binding, often by the environmental impact assessments (EIAs) in the form of environmental monitoring or w...
Article
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Zoogeographical regions, or zooregions, are areas of the Earth defined by species pools that reflect ecological, historical and evolutionary processes acting over millions of years. Consequently, researchers have assumed that zooregions are robust and unlikely to change on a human timescale. However, the increasing number of human‐mediated introduc...
Article
Multiple environmental factors are known to shape species distributions at the global scale, including climate and topography, but understanding current extents of occurrence and biodiversity patterns requires considering anthropogenic factors as well. Numerous studies have explored the relationship between contemporary human activities and differe...
Article
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The increasing trend of large carnivore attacks on humans not only raises human safety concerns but may also undermine large carnivore conservation efforts. Although rare, attacks by brown bears Ursus arctos are also on the rise and, although several studies have addressed this issue at local scales, information is lacking on a worldwide scale. Her...
Preprint
Full-text available
Understanding how the world’s biodiversity is organized and how it changes across geographic regions is critical to predicting the effects of global change ¹ . Ecologists have long documented that the world’s terrestrial fauna is organized hierarchically in large regions - or realms - and continental scale subregions 2–6 , with boundaries shaped by...
Article
The last populations of threatened taxa usually survive in low-impacted areas, whose protection and management is critical for its conservation. However, they can also be located in humanized and highly dynamic areas, whose management can be extremely challenging. The Andalusian buttonquail (Turnix sylvaticus sylvaticus) is the critically endangere...
Article
Social networks are the result of interactions between individuals at different temporal scales. Thus, sporadic intergroup encounters and individual forays play a central role in defining the dynamics of populations in social species. We assessed the rate of intergroup encounters for three western lowland gorilla (Gorilla gorilla gorilla) groups wi...
Article
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In previous centuries, wolves were extirpated across much of their range worldwide, but they started to recover in Europe since the end of last century. A general pattern of this recovery is the expansion of the range occupied by local populations. The Iberian wolf population, shared by Portugal and Spain, reached its lowest extent and abundance ar...
Article
The current rapid loss of biodiversity globally calls for improved tools to predict conservation status. Conservation status varies among taxa and is influenced by intrinsic species’ traits and extrinsic factors. Among these predictors, the most consistently recognized and widely available is geographic range area. However, ranges of equal area can...
Article
Full-text available
Large carnivores are often persecuted due to conflict with human activities, making their conservation in human-modified landscapes very challenging. Conflict-related scenarios are increasing worldwide, due to the expansion of human activities or to the recovery of carnivore populations. In general, brown bears Ursus arctos avoid humans and their s...
Data
Set of top candidate models (ΔAICc <2) with combinations of the variables that could influence the probability and the intensity of damage of apiaries by brown bears in the Cantabrian Mountains, Spain. Variables include environmental factors, apiary features, and spatial and temporal factors. Note that the variables Probability-1, Prevention, Human...
Article
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Rewilding is emerging as a promising restoration strategy to enhance the conservation status of biodiversity and promote self-regulating ecosystems while re-engaging people with nature. Overcoming the challenges in monitoring and reporting rewilding projects would improve its practical implementation and maximize its conservation and restoration ou...
Article
Despite severe population declines and an overall range contraction, some populations of large carnivores have managed to survive in human‐modified landscapes. From a conservation perspective, it is important to identify the factors allowing for this coexistence, including the relevant habitat characteristics associated with the presence of large c...
Presentation
Full-text available
Coastlines of protected areas are used by humans for harvesting and recreational aims, often using motorized vehicles. With the aim to investigate the impact of beach traffic on the breeding success of ground-nesting birds, in the spring of 2010 we surveyed the coastline of Doñana National Park (south-western Spain). We focused on Kentish plovers C...
Preprint
Full-text available
Human activity leading to both species introductions and extinctions is widely known to influence diversity patterns on local and regional scales. Yet, it is largely unknown whether the intensity of this activity is enough to affect the configuration of biodiversity at broader levels of spatial organization. Zoogeographical regions, or zooregions,...
Article
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Aim: Agriculture is a key threat to biodiversity; however, its relationship with biodiversity patterns is understudied. Here, we evaluate how the extent, intensity and history of croplands relate to the global distribution of threatened mammals. We propose two hypotheses to explain these relationships: shelter , which predicts that threatened speci...
Article
The barrier effect is a pervasive impact of road networks. For many small mammals individual avoidance responses can be the mechanism behind the barrier effect. However, little attention has been paid to which species and road characteristics modulate road avoidance and mortality risk. We measured the strength of the barrier effect imposed by the r...
Conference Paper
Full-text available
The mitigation of the conflicts associated to livestock predation and agriculture damage is pivotal for the conservation of large carnivores in Europe. Aiming to identify the management strategies that more efficiently mitigate these conflicts, we made a critical review of the current policies to manage damage made by brown bears, lynx, wolves and...
Article
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There is the tendency to assume that endangered species have been both genetically and demographically healthier in the past, so that any genetic erosion observed today was caused by their recent decline. The Iberian lynx (Lynx pardinus) suffered a dramatic and continuous decline during the 20th century, and now shows extremely low genome- and spec...
Article
Full-text available
Most mammals rely upon scent for intraspecific communication. As most bear species have large home ranges and are non-territorial, scent deposit while walking could be an effective way to communicate with conspecifics. Here, we investigate the existence of pedal glands in brown bears and their role in chemical communication from a histological, bio...