Javier Calzada

ORCID: 0000-0001-5701-2238
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About
Contact & Profiles
Research Areas
  • Wildlife Ecology and Conservation
  • Species Distribution and Climate Change
  • Bat Biology and Ecology Studies
  • Animal Ecology and Behavior Studies
  • Evolution and Paleontology Studies
  • Genetic diversity and population structure
  • Rabbits: Nutrition, Reproduction, Health
  • Animal Behavior and Welfare Studies
  • Mediterranean and Iberian flora and fauna
  • Ecology and Vegetation Dynamics Studies
  • Fish Ecology and Management Studies
  • Environmental DNA in Biodiversity Studies
  • Economic and Environmental Valuation
  • Mycobacterium research and diagnosis
  • Primate Behavior and Ecology
  • Marine animal studies overview
  • Avian ecology and behavior
  • Comparative Animal Anatomy Studies
  • Tuberculosis Research and Epidemiology
  • Rabies epidemiology and control
  • Historical and socio-economic studies of Spain and related regions
  • Infectious Diseases and Tuberculosis
  • Archaeological and Historical Studies
  • Aquatic Invertebrate Ecology and Behavior
  • Animal Law and Welfare

Universidad de Huelva
2014-2024

Universidad Carlos III de Madrid
2012

Instituto de Ecología
2009

X-Fab (Germany)
2009

Consejo Superior de Investigaciones Científicas
2000-2006

Estación Biológica de Doñana
2000-2006

Abstract Aichi Target 12 of the Convention on Biological Diversity (CBD) contains aim to ‘prevent extinctions known threatened species’. To measure degree which this was achieved, we used expert elicitation estimate number bird and mammal species whose were prevented by conservation action in 1993–2020 (the lifetime CBD) 2010–2020 timing 12). We found that 21–32 7–16 since 1993, 9–18 two seven 2010. Many remain highly may still become extinct. Considering 10 five did go extinct (or are...

10.1111/conl.12762 article EN cc-by Conservation Letters 2020-09-09

Abstract: Applied conservation biology must provide solutions for the of species in modern landscapes, where prime habitats are being continuously fragmented and altered animals restricted to small, nonviable populations. We studied habitat selection a population endangered Iberian lynx ( Lynx pardinus ) by examining 14 years radiotracking data obtained from trapped two different source areas. Habitat was independently predispersal areas, dispersing individuals through region, postdispersing...

10.1046/j.1523-1739.2000.98539.x article EN Conservation Biology 2000-06-01

Abstract: The Iberian lynx (Lynx pardinus) may be the first charismatic felid to become extinct in a high-income country, despite decades of study and much data that show extinction is highly probable. International Union for Conservation Nature categorizes it as critically endangered; about 200 free-ranging individuals remain two populations southern Spain. measures aimed at averting extirpation have been extensively undertaken with 4 former 10 recorded 25 years ago. Two four extirpated....

10.1111/j.1523-1739.2010.01607.x article EN Conservation Biology 2010-11-17

Abstract Desert rivers are highly dynamic systems in which dry periods, frequently involving the cessation of superficial flow, alternate with violent flash floods. In spite their territorial importance and high functional biological diversity, desert have received little attention scientific literature, especially Northern Africa. This study investigated distribution non‐native fish, relationship river damming potential impacts on native biodiversity main basins draining arid areas Morocco...

10.1002/aqc.2487 article EN Aquatic Conservation Marine and Freshwater Ecosystems 2014-09-12

During the last 70 years, Iberian lynx Lynx pardinus has experienced dramatic changes in its environment, range size, and population size. In a context of widespread support for conservation, recent downgrading from Critically Endangered to IUCN Red List drawn some public concern. Here we expand summarized account published website illustrate how assessments are performed well studied species. Assessment requires assignment highest threat category which species qualifies according any five...

10.7325/galemys.2017.a2 article EN Galemys Spanish Journal of Mammalogy 2017-12-13

10.1644/1545-1410(2001)680<0001:gg>2.0.co;2 article Mammalian Species 2001-12-01

ABSTRACT The first clear evidence of the establishment an invasive freshwater bivalve in Africa is provided, through description distribution Corbicula fluminea Morocco. C. was detected 2008 and 2011 two independent river basins, although still absent other systems throughout country. This information used to propose management actions, which should be focused on avoiding interbasin expansion as well new introduction events from European fresh waters. Copyright © 2012 John Wiley &amp; Sons, Ltd.

10.1002/aqc.2231 article EN Aquatic Conservation Marine and Freshwater Ecosystems 2012-03-01

During 1997 and 1998, a survey of Iberian carnivores was conducted to study the epidemiology bovine tuberculosis in Doñana National Park surrounding areas southwestern Spain. Post-mortem examinations were done on seven red foxes (Vulpes vulpes), two Egyptian mongoose (Herpestes ichneumon), one weasel (Mustela nivalis), genets (Genetta genetta), lynx (Lynx pardinus), Eurasian badger (Meles meles), polecats putorius). Lesions suggestive not detected but, culture, Mycobacterium bovis isolated...

10.7589/0090-3558-41.2.435 article EN Journal of Wildlife Diseases 2005-04-01

Summary Food availability is considered a major factor determining spacing behaviour in territorial species, especially for females. Theoretically, spatial overlap (considered the opposite of territoriality) and food are related nonlinear manner (hypothesized inverted‐ U function), with high levels at extremes gradient low intermediate this gradient. Similar patterns expected encounter frequencies owing to its correlation overlap. However, these predictions have rarely been tested highly...

10.1111/1365-2656.12226 article EN Journal of Animal Ecology 2014-04-11

Abstract Aichi Target 12 of the Convention on Biological Diversity (CBD) aims to ‘prevent extinctions known threatened species’. To measure its success, we used a Delphi expert elicitation method estimate number bird and mammal species whose were prevented by conservation action in 1993 - 2020 (the lifetime CBD) 2010 timing 12). We found that 21–32 7–16 since 1993, 9–18 2–7 2010. Many remain highly threatened, may still become extinct near future. Nonetheless, given ten five did go (or are...

10.1101/2020.02.11.943902 preprint EN cc-by-nd bioRxiv (Cold Spring Harbor Laboratory) 2020-02-12

We conducted a retrospective serologic survey for antibodies against the MPB70 protein of Mycobacterium bovis in wild carnivores from Doñana National Park (southwestern Spain). Serum samples 118 red foxes (Vulpes vulpes), 39 Iberian lynx (Lynx pardinus), 31 Eurasian badgers (Meles meles), five Egyptian mongoose (Herpestes ichneumon), four European genet (Genetta genetta), and one otter (Lutra lutra) were analyzed using an indirect competitive enzyme-linked immunoassay. Antibodies M. detected...

10.7589/0090-3558-42.3.704 article EN Journal of Wildlife Diseases 2006-07-01

Despite their potential importance, biological processes such as competitive exclusion (CE) have been largely neglected in phylogeographical studies. Here, we analyse the role of glacial events and CE evolutionary history lesser white-toothed shrew, Crocidura suaveolens, Iberia based on cytochrome b sequences. All Iberian samples grouped together with rest western European populations within previously described clade IV. We identified three distinct lineages this major clade, two them...

10.1093/biolinnean/blx126 article EN Biological Journal of the Linnean Society 2017-12-14

Mammalian carnivores may be important agents of prehistoric bone accumulations. Taphonomic analyses assemblages used for specific assignment usually include information on feeding, breeding, denning and even defecating ecology extant species. Here, we review literature the Hyaenidae, Felidae Canidae families carnivores, focusing ecological behavioural traits that are commonly as criteria to assign accumulations whether these correspond present behaviour We found a total 93 records where 12...

10.1016/j.quascirev.2022.107459 article EN cc-by-nc-nd Quaternary Science Reviews 2022-04-20

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10.2139/ssrn.4845873 preprint EN 2024-01-01

Abstract Crocidura iculisma (= C . suaveolens ) is a shrew (Soricidae, Eulipotyphla) showing fragmented distribution limited to the Iberian Peninsula, southern and western France northwestern Italy. Although it has been in Peninsula since Middle Pleistocene, its biogeographical history remains poorly known. Here, we provide new data on from Castillejo del Bonete site (southern Spain) dated as 3.8–3.6 cal kyr BP. At same time, analyse changes geographic based palaeontological record. We have...

10.1111/mam.12374 article EN cc-by-nc Mammal Review 2024-07-29

Abstract Montane biota is vulnerable to climate change, especially in the case of relict species environmentally extreme areas. The Dades trout Salmo multipunctata a from Draa basin, on southern slopes High Atlas Mountains, Morocco. Apart its genetic and morphological singularity almost nothing known about this species. We surveyed whole potential distribution range found that only two isolated populations exist (in M'Goun catchments), occupying an extremely small range, &lt; 22 km stream...

10.1017/s0030605316001551 article EN Oryx 2017-04-06

Abstract Accurate knowledge of the distribution rare species remains a great challenge in conservation biology because these are prone to extinction and number becoming is increasing. However, usually difficult delimit their low abundances and/or small ranges. These difficulties even greater when they sympatric with morphologically similar that can lead identification errors. Here, we use barn owl ( Tyto alba ) pellets infer, indirectly, potential habitat associations lesser white‐toothed...

10.1111/jzo.12660 article EN Journal of Zoology 2019-03-04
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