Santiago Palazón

Santiago Palazón
Generalitat de Catalunya · Fauna and Flora Service

Ph.D. in Biological Sciences

About

173
Publications
53,455
Reads
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1,899
Citations
Additional affiliations
January 2004 - March 2019
Generalitat de Catalunya
Position
  • Researcher
January 1992 - present
University of Barcelona
Position
  • Collaborator

Publications

Publications (173)
Article
Full-text available
In semi-arid environments, the effects of irregularly distributed rainfall, flow regulation and water inter-basin transfer enhance the spread of non-native fish to the detriment of native communities. In the River Segura, since the 1980s the number of non-native fish species has progressively increased, also because of the building of water transfe...
Preprint
Full-text available
Connectivity is a key driver of the recovery and expansion of endangered populations and has to be evaluated in management plans. In practice, connectivity is difficult to quantify especially for rare and elusive species. Here, we use spatial capture-recapture (SCR) models with an ecological detection distance to identify barriers to movement. We f...
Poster
Full-text available
In the last 20 years, following the improvement of water quality, the Eurasian otter (Lutra lutra) has expanded its range in the catchment of the River Segura (Murcia region, SE Spain). We aimed to assess the effects of the variation occurred in the composition of the river’s fish community throughout this period on the feeding habits of the mustel...
Preprint
Full-text available
Abundance of small populations of large mammals may be assessed using complete counts of the different individuals detected over a time period, so-called minimum detected size (MDS). However, as population is growing larger and its distribution is expanding wider, the risk of under-estimating population size using MDS is increasing sharply due to t...
Presentation
Se han recopilado y analizado los datos de presencia (seguimientos poblacionales, capturas de control y erradicación, muertos/atropellos, observaciones, fotografías/vídeos, rastros/indicios) de las cuatro especies estudiadas en el periodo 2010-2020. Los mapas de distribución (puntos Xutm/Yutm y cuadrículas UTM 10x10 km de presencia confirmada) han...
Book
Full-text available
In the FOURTH national otter survey in Spain, 8,024 sampling points were carried out covering the entire Spanish mainland. The only province where no sampling was Almeria. The UTM grid (10x10 km) was used as a sampling unit, with a total of 4,019 grids prospected, representing 77.3% of the grids of mainland Spain. Of all sampling, 4,822 (60.1%) 600...
Article
Full-text available
Citation: Peñuelas, J.; Germain, J.; Álvarez, E.; Aparicio, E.; Arús, P.; Basnou, C.; Blanché, C.; Bonada, N.; Canals, P.; Capodiferro, M.; et al.
Article
Full-text available
The full article is available in issue 20 of Carnivore Damage Prevention News: http://www.protectiondestroupeaux.ch/fileadmin/doc/International/CDP_and_General_Infos/CDPNews20_Nov2020.pdf
Chapter
This chapter comprises the following sections: names, taxonomy, subspecies and distribution, descriptive notes, habitat, movements and home range, activity patterns, feeding ecology, reproduction and growth, behavior, parasites and diseases, status in the wild, and status in captivity.
Article
Coexistence of humans and large carnivores is a major challenge for conservation and management, especially in human‐modified landscapes. Ongoing recovery of some large carnivore populations is good conservation news, but it also brings about increased levels of conflict with humans. Compensation payments and preventive measures are used worldwide...
Article
Full-text available
The pressure elicited by invasive species on native species significantly increases with the increase of the overlap of their ecological niches. Still, the specific mechanisms of the trophic displacement of native species during the invasion process are unclear. The effects of the invasive American mink (Neovison vison) on the critically endangered...
Article
The publisher regret that the presentation of Figure 3 in the original version of the above article was incorrectly presented. The data in the image were inadvertently omitted during publication process.
Article
Full-text available
Mammals usually adjust behavioral patterns when exposed to disturbances. Elusiveness and low-risk time selection may reduce their stress in periods of highest risk. In Europe, brown bears (Ursus arctos) coexist with humans in densely populated and modified landscapes and, consequently, are exposed to human-caused disturbances during the daytime hou...
Article
Full-text available
Detection probability is an important input when studying and managing species. It reduces the miscalculations of the estimates of occupancy, population abundances and their trends inherent to the imperfect detection during sampling. However, detection probability may vary in relation to environmental and biological factors, such as the presence of...
Chapter
In the last forty years, continental vertebrates have suffered a sharp decline in Catalonia. Many autochthonous species are threatened due to habitat loss and fragmentation, environmental pollution, and interaction with invasive alien species. A hybridization between autochthonous species and exotic or domestic species is occurring. The number of e...
Presentation
Full-text available
Talk presented at the 29th International Congress for Conservation Biology ICCB : https://conbio.org/mini-sites/iccb-2019/ ) in Kuala Lumpur (Malaysia) on the 24th of July 2019. Summary : The political fragmentation and the high species mobility imply that most European large carnivore populations are transboundary, which makes conservation effort...
Article
Full-text available
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...
Article
Full-text available
When the first two bears from Slovenia were set free in the central Pyrenees in 1996, we could hardly imagine what the future would bring. Twenty three years later, the biological and ecological situation of the species is very favourable, despite the numerous pitfalls, obstacles and problems that have arisen along the way. Much of the responsibili...
Article
Full-text available
The brown bear has an omnivorous diet and is an opportunistic hunter. Sometimes it causes attacks on livestock, mainly on sheep and goats, and on bee hives. There is also occasional damage to cattle and horses. This negative interaction with the primary sector implies an additional difficulty that causes economic losses and may put at risk the reco...
Article
Full-text available
Since its release in 1999, the Pyros male has monopolized the reproduction of this incipient bear population. Already in Slovenia, in 1999, he impregnated the females Ziva and Mellba before they were captured and moved to the central Pyrenees. The appearance of children, grandchildren and great-grandchildren of Pyros raised the alarm of a possible...
Article
Full-text available
The genetic characteristics of introduced populations have a relevant impact on their ability to establish and spread. The American mink (Neovison vison), native to North America, is an important invasive species in the Iberian Peninsula. Here, we used mitochondrial DNA sequences data to investigate the genetic diversity and phylogeographic structu...
Article
Full-text available
Desde su liberación en 1997, el macho Pyros ha monopolizado la reproducción de esta incipiente población osera. Ya en Eslovenia, en 1996, fecundó a las hembras Ziva y Mellba antes de que estas fueran capturadas y trasladadas a los Pirineos centrales. La aparición de hijos, nietos y bisnietos de Pyros puso la voz de alarma de una posible endogamia f...
Article
Full-text available
Cuando en 1996 se liberaron en los Pirineos centrales las dos primeras osas procedentes de Eslovenia, poco podíamos imaginar lo que nos depararía el futuro. Después de 23 años, la situación biológica y ecológica de la especie es muy favorable, a pesar de los múltiples escollos, trabas y problemas que han ido apareciendo en el transcurso del tiempo....
Article
Full-text available
El oso pardo presenta una dieta omnívora y es un cazador oportunista. A veces causa ataques sobre la ganadería, principalmente sobre ovino y caprino, y sobre la apicultura. Puntualmente, causa daños sobre ganado bovino y equino. Esta interacción negati va con el sector primario implica una dificultad añadida que causa quebrantos económicos y puede...
Article
Full-text available
The European mink (Mustela lutreola) is one of the most threatened mammals of Europe. Its present distribution is limited to three isolated areas: northern Spain and western France, the Danube delta in Romania, and Ukraine and Russia. Hunting pressure, habitat loss and the impact of the alien American mink (Neovison vison) have all been proposed as...
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...
Chapter
Full-text available
Large carnivores are keystone species in the ecosystems where they inhabit. Their loss may provoke an imbalance at several levels of the ecosystem. Conservation strategies for existing populations of large carnivores and restoration programmes of disappeared populations can help at maintaining the ecosystem balance and foster the perception links o...
Preprint
Full-text available
Human administrative borders have no effect on wild animals, and the vast home ranges of large carnivores often cause them to live simultaneously on the territory of two or more countries or jurisdictions with different management policies. Here, we investigate the importance of transboundary population monitoring using as a case study the Pyrenean...
Article
Full-text available
The European mink is a critically endangered mustelid with only three declining and isolated populations. Based on particular interpretation of genetic studies, the origin of SW population (France and Spain) and its conservation measures were recently questioned, and considered an example of managed relocation. The four published genetic studies sh...
Technical Report
Full-text available
The EU NON-NATIVE SPECIES RISK ANALYSIS – RISK ASSESSMENT TEMPLATE for Neovison vison was made as an argument to introduce this species on the EU Invasive Alien Species list. The first Union list of 37 plant and animal species was introduced in August 2016 and another 12 were added in August 2017. However, this accounts for just 3% of all IAS belie...
Article
Full-text available
1. Wildlife damage to human property threatens human–wildlife coexistence. Conflicts arising from wildlife damage in intensively managed landscapes often undermine conservation efforts, making damage mitigation and compensation of special concern for wildlife conservation. However, the mechanisms underlying the occurrence of damage and claims at la...
Article
The American mink (Neovison vison) is a semi-aquatic mustelid from North America that is considered an invasive species in many countries. Due to its reported damage to native species, efforts are often undertaken to eradicate or control these mink populations. The aims of this study were to describe the demographic structures of three mink populat...
Article
Full-text available
Age estimation of three mustelid species with similar body size was performed in Northern Spain. Canine samples of 1766 carcasses from 1661 American mink (Neovison vison), 54 European mink (Mustela lutreola), and 51 European polecats (Mustela putorius) were sectioned, and cementum annuli counts in tooth sections were used for age estimation. Americ...
Article
The European mink (Mustela lutreola) has undergone a dramatic decline and is one of the most endangered mammals in the world. The invasive American mink (Neovison vison) is considered the main factor for this decline. However, the American mink's introduction and the subsequent ecological concurrence of the two species cannot solely explain the dec...
Article
Full-text available
The European mink (Mustela lutreola, L. 1761) is a critically endangered mustelid, which inhabits several main river drainages in Europe. Here, we assess the genetic variation of existing populations of this species, including new sampling sites and additional molecular markers (newly developed microsatellite loci specific to European mink) as comp...
Chapter
Full-text available
There are only three remaining populations of European mink Mustela lutreola (Linnaeus, 1761) in Europe: the Western (Spain and France), the Romanian (Danube Delta) and the Russian population (divided into several subpopulations). The current Spanish population is composed of less than 500 individuals, distributed along 2300 kilometres of watercour...
Data
Understanding changes over time in the distribution of interacting native and invasive species that may be symptomatic of competitive exclusion is critical to identify the need for and effectiveness of management interventions. Occupancy models greatly increase the robustness of inference that can be made from presence/absence data when species are...
Article
Trophic relationships between invasive species in multiply invaded ecosystems may reduce food limitation relative to more pristine ecosystems and increase resilience to control. Here, we consider whether invasive predatory American mink Neovison vison are trophically subsidized by invasive crayfish. We collated data from the literature on density a...
Article
Full-text available
An experimental release of the European mink (Mustela lutreola) was carried out in the Salburua wetland in North Spain between 2008 and 2010. A partial removal of feral American mink (Neovison vison) was done preceding the release. The survival and the cause of death of each of 27 captive-bred minks were studied during five months after release. On...
Article
Full-text available
The American mink Neovison vison is an elusive mustelid that is monitored mostly through the detection of its field signs, namely, footprints and scats. In Europe, the American mink has been often monitored using the standard otter survey strategy developed specifically for the Eurasian otter Lutra lutra, requiring to walk transects of 600 m spaced...
Article
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Article
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Human intervention is the main cause of the decline of the Critically Endangered European mink Mustela lutreola. In this study we analysed the main causes of direct human-caused mortality of the species in Spain. A total of 47 mortality records were obtained for the period 1950–1989, and 145 for 1990–2008. There was temporal variation in the cause...
Article
Full-text available
We studied the morphology of American mink Neovison vison in five out of the six introduced populations in Spain. The spatial and temporal variation of body weight (BW), body length (BL), tail length, hind-foot length and ear length were analysed. Temporal trends in BW and BL in relation to years since mink introduction were also analyzed. In addit...