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result(s) for
"Rosalino Luís Miguel"
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Positive perceptions of brown bears linked to long-term cohabitation in the Iberian Peninsula
2025
The brown bear (
Ursus arctos
) populations are expanding in the Iberian Peninsula, particularly in the Cantabrian Mountains. This ongoing expansion and the species’ return to Portugal could be jeopardized by a lack of sustainable coexistence strategies. To shed light on how experiences with bears have shaped human perceptions and attitudes toward this species, we distributed online questionnaires (
n
= 441) across Portugal and Spain. In addition, we evaluated differences in attitudes and perceptions among regions with varying levels of exposure to bears: those with (BAS) or without (NBAS) bear presence in Spain and those with (BAP) or without (NBAP) the potential to sustain bears in Portugal. Despite observing overall positive attitudes toward bears, Spanish respondents showed stronger attachment and receptiveness toward the species. Respondents from BAS, having more interactions with wild bears, were also more favourable toward sharing territory with them. Conversely, Portuguese respondents showed more neutral attitudes toward bear presence, as well as higher perception of risk and lower perception of benefit than previously reported. Our findings highlight the importance of understanding the social landscape in bears’ expansion range. As human-bear interactions increase, this knowledge is key to adopt proactive and targeted socio-ecological measures to address local community’s concerns.
Journal Article
Livelihood vulnerability increases human–wildlife interactions
by
Mucova, Serafino
,
Vahossa, Somar
,
Rosalino, Luís Miguel
in
Climate change
,
Households
,
Livelihood
2021
Human–wildlife interactions (HWIs) occur in many rural African communities, with potential impacts on livelihood vulnerability. High livelihood vulnerability may force communities to employ strategies that increase the risk of negative HWIs, yet the extent to which HWIs drive or are driven by vulnerability is unclear. We hypothesized that more vulnerable households are more likely to be exposed to wildlife and experience negative interactions. To test this hypothesis, we calculated the Livelihood Vulnerability Index (LVI) of rural households in and around Quirimbas National Park (north-eastern Mozambique) and assessed whether there is a link between livelihood vulnerability and HWIs. We found a two-way association between LVI and HWIs, with more vulnerable households indeed taking greater risks and encountering wildlife when fetching water from rivers, whereas less vulnerable households tended not to employ strategies likely to increase wildlife encounters. We also observed that HWIs exert a strong effect on livelihood vulnerability, suggesting that HWIs should be included as an exposure factor in vulnerability assessments for rural households. We recommend that livelihood strategies and community vulnerability should be considered when designing HWI mitigation schemes and implementing conservation measures.
Journal Article
Global patterns of carnivore spatial ecology research in agroecosystems
by
Rosalino Luís Miguel
,
Curveira-Santos Gonçalo
,
Santos, Maria João
in
Agricultural ecosystems
,
Agricultural expansion
,
Agricultural production
2021
The growing needs for agricultural expansion and intensification will likely continue to reduce and fragment the terrestrial habitats fundamental to mammalian carnivores. Recent research identified benefits of agroecosystems to carnivores recognizing their multifunctionality, mostly for common species. However, the variability of carnivore ecology investigated in agroecosystems, biases in agriculture types and species targeted, and methodological approaches may affect the available knowledge to reconcile conservation and agricultural production. To fill this gap, we conducted a systematic literature review to identify which aspects of and how is carnivore spatial ecology being investigated within agroecosystems. Of the 110 reviewed studies, most focused on agricultural crops (55%) and grasslands (47%) and half referred to monocultures. We found that 61% of the studies were conducted in Europe and North America. Eighty-four carnivore species were studied, 73% classified as Least Concern, with 67% of the studies targeting a single species and 30% focused on only seven common species. Almost all studies included some form of habitat use analysis and species’ home-range and its attributes (e.g. size, resource selection), the most common spatial ecology aspects studied. Most studies suggested that agriculture functions as food provisioning (69%) but few used direct food availability measures. Our results highlight that studies tend to be descriptive and geographically biased towards northern hemisphere and to non-forested agricultural types. We suggest that future carnivore spatial ecology research in agroecosystem should be hypotheses-driven, with greater focus on the mechanisms and processes through which agroecosystems might affect carnivore spatial ecology in particular for areas with high priority for carnivore conservation.
Journal Article
Ecological drivers of Mycobacterium avium subsp. paratuberculosis detection in mongoose (Herpestes ichneumon) using IS900 as proxy
2020
Mycobacterium avium
subsp.
paratuberculosis
(
MAP
) is the etiological agent of Johne’s disease or paratuberculosis, a chronic infection affecting domestic ruminants worldwide. Despite sporadic reports of
MAP
occurrence in non-ruminants, information on the risk factors predisposing for infection is still scarce and evidence of transmission paths linking the livestock-wildlife-environment interfaces also remains lacking. In this study, we predicted that environmental, host-related, land use and human driven disturbance factors would modulate carnivore exposure to
MAP
. To test these hypotheses, we performed a retrospective survey, based on microbiological and molecular methods, in mainland Portugal including five sympatric species from the
Herpestidae
,
Canidae
,
Viverridae
, and
Mustelidae
families (n = 202) and examined 16 variables as putative predictors of
MAP
occurrence. Molecular evidence of
MAP
using IS
900
as proxy was demonstrated in 7.43% (95%CI: 4.55–11.9) of surveyed carnivores, the highest proportions being registered for red fox (
Vulpes vulpes
) (10%; 95%CI: 4.0–23) and Egyptian mongoose (
Herpestes ichneumon
) (6.0%; 95%CI: 3.2–11). We demonstrate that important species of the Mediterranean carnivore guild, such as stone marten (
Martes foina
) and common genet (
Genetta genetta
), may also be exposed to
MAP
, being this the first time that occurrence in genet is reported. The high proportion of DNA-positive specimens, concurrent with the apparent lack of gastro-enteric lesions and molecular confirmation of IS
900
in feces, argue for the presence of subclinical carriers that occasionally shed bacteria, potentially aiding as source of infection to susceptible species and possibly contributing for environmental contamination. Achievement of
MAP
isolation would prove beyond any doubt that
MAP
is present in this wildlife population. Ecological modelling results suggested that the probability of
MAP
infection using IS
900
as proxy in mongoose is positively associated with higher altitude and temperature stability, as well as with lower annual rainfall. Density of livestock farms was found not to be a significant predictor, which may indicate that the livestock-wildlife interface is probably not important as an infection route for mongoose.
Journal Article
Research trends and geographical distribution of mammalian carnivores in Portugal (SW Europe)
by
Bencatel, Joana
,
Ferreira, Catarina C.
,
Barbosa, A. Márcia
in
Analysis
,
Animals
,
Biodiversity
2018
Information regarding species' status at a regional scale is instrumental for effective conservation planning. Some regions of southwestern Europe, such as Portugal, albeit included in the Mediterranean biodiversity hotspot, lack a detailed assessment of the distribution patterns of several taxonomic groups, such as carnivores. Moreover, information is scattered, often unreliable and biased towards some species or regions. This study aimed at reviewing the existing knowledge on mammalian terrestrial carnivores in Portugal, to analyse research trends, update the species checklist and assess their historical and current distribution patterns. We conducted a comprehensive review of 755 scientific studies to analyse several publication metrics and compiled 20,189 presence records of all mammalian terrestrial carnivores occurring in Portugal since historical times to evaluate their distribution patterns. Carnivore research in Portugal began in the 18th century, with a recent boost in the mid-1990s, and has been biased towards certain research topics and regionally threatened species. There are 15 extant species in Portugal, with nine occurring across the country, six showing a more limited range, as well as one additional species currently locally extinct (Ursus arctos). Over the last decades, the distribution ranges of seven species apparently remained stable, two expanded, two contracted, and three showed unclear trends. The presence of a new invasive carnivore, the raccoon (Procyon lotor), is also documented here. This study illustrates the relevance of a comprehensive analysis of non-systematic data to assess the historic and current status of mammalian terrestrial carnivores at a national level, and to identify knowledge gaps and research priorities.
Journal Article
Drivers of Psammodromus algirus abundance in a Mediterranean agroforestry landscape
by
Fernandes, Joana
,
Petrucci-Fonseca, Francisco
,
Santos-Reis, Margarida
in
Abandonment
,
Abundance
,
Agricultural practices
2019
Mediterranean European landscapes have been shaped by human activities for centuries, particularly by livestock and farming. Traditionally managed montado landscapes have been recognized as having a crucial role in biodiversity conservation, providing habitat complexity and thus, ecological conditions for a variety of species. Biodiversity associated with montado can only be maintained under specific agricultural practices, with the intensification or abandonment of such practices posing serious threats for wildlife. Despite the high number of reptile species endemic to the Iberian Peninsula, research on the influence of agroforestry management practices on these species has been scarce. The mediterranean lizard Psammodromus algirus is a generalist species that responds to changes in the structure and quality of microhabitats, specifically the shrub layer, which is greatly affects by changes in cattle grazing intensity. In this study, we assessed how grazing affects the frequency of occurrence of P. algirus in a Mediterranean landscape dominated by montado. We detected that areas of intermediate age regarding grazing exclusion support higher lizard abundance, with P. algirus abundance being limited by vegetation structure and solar radiation. Thus, we may infer that the vegetation structure regulatory role of cattle will affect this lizard’s abundance, limiting it indirectly. We suggest that the maintenance of adequate traditional management, allowing the grazing pressure at low to moderate levels, would be beneficial to this species and reptiles in general and conclude that reconciling grazing and reptile conservation is possible if done in a sustainable way.
Journal Article
Drivers of wood mouse body condition in Mediterranean agroforestry landscapes
by
Rosalino Luís Miguel
,
Fragoso, Ricardo
,
Santos-Reis, Margarida
in
Agricultural land
,
Agricultural management
,
Agroforestry
2020
Agriculture and pastureland for cattle grazing are common land uses in Mediterranean landscapes. These activities significantly alter the habitat conditions, affecting the body conditions of wild communities, especially those with low vagility, such as small mammals. We aimed to evaluate how cattle grazing and the habitat composition affected the body condition of the wood mouse Apodemus sylvaticus in a southern Mediterranean agroforestry system using the Scale Mass Index (SMI) as an indicator of individuals condition. To assess variation in body condition, wood mice were live-trapped in a gradient of grazed sites with different stocking intensities, as well in sites excluded to grazing at different time periods (1998, 2004, and 2008). Wood mice body conditions were influenced by both microhabitat and macrohabitat drivers, with sex-biased patterns, while for the females, only the shrub species had an influence (a microhabitat variable); for the males, both the shrub species and the undercover density (and specifically their interaction) were the important drivers (microhabitat and macrohabitat variables). Unexpectedly, the physical condition variation detected between periods was not directly proportional to the exclusion period, but rather, a certain degree of similarity was found between the different sites (sites excluded since 2004 paired with grazed sites). These results suggest that the presence of food and shelter are determinants to the wood mouse’s physical condition: for females, securing food sources enhance the body condition, while for males, the degree of cover, and consequently refuge against predators, seems to be determinant. These results reinforce the need for sustainable landscape management to assure the maintenance of habitat heterogeneity.
Journal Article
Influence of life-history traits on the occurrence of carnivores within exotic Eucalyptus plantations
by
Fonseca, Carlos
,
Guillera-Arroita, Gurutzeta
,
Hilário, Renato R.
in
Biodiversity
,
BIODIVERSITY REVIEW
,
Body mass
2020
Aim The world's forested area has been declining, especially in developing countries. In contrast, forest plantations are increasing, particularly exotic Eucalyptus plantations, which cover nowadays over 20 million ha worldwide. This global landscape change affects native communities, especially those at higher trophic levels that are affected by bottom–up cascading effects, such as carnivores. We seek to identify the general life‐history traits of mammalian carnivore species that use exotic Eucalyptus plantations. Location We reviewed 55 studies reporting carnivore presence in Eucalyptus plantations worldwide. Methods We consider seven species life‐history traits (generation length, social behaviour, body mass, energetic trophic level, diet diversity, habitat generalist/specialist and locomotion mode) as candidate drivers. We used generalized linear mixed models, with life‐history traits as fixed factors, and study as well as carnivore species as random factors. We obtained the carnivore occurrence data from the literature (detection of 42 different species, from seven families). We considered non‐detected species those with an IUCN Red List of Threatened Species estimated distribution range overlapping with the study areas, but not recorded by the studies. Results While we found no evidence of an effect of any of the other life‐history traits tested, our modelling procedure indicated that habitat generalist species are more likely to use Eucalyptus forests than specialist species. Main conclusions Our results, therefore, confirm an impoverishment of predator communities in disturbed environments, with the exclusion of the most specialist predators, leading to fragmentation of their populations and, ultimately contributing to their local extinction. The local extinction of specialist carnivores may lead to “functional homogenization” of communities within plantations, modifying ecosystem functioning with a negative impact on plantations’ productivity, profitability and services.
Journal Article
Brown bear damage: patterns and hotspots in Croatia
by
Reljić, Slaven
,
Huber, Đuro
,
Hipólito, Dário
in
Agricultural economics
,
Animal behavior
,
Animal populations
2020
Human–bear conflicts resulting from livestock depredation and crop use are a common threat to the brown bear Ursus arctos throughout its range. Understanding these conflicts requires the recording and categorization of incidents, assessment of their geographical distribution and frequency, and documentation of the financial costs and the presence of any preventative measures. Damage compensation schemes can help mitigate conflicts and, in some cases, improve acceptance of bears. This study aims to elucidate the major factors determining the patterns of damage caused by bears, examine the effectiveness of preventative measures in reducing such damage, and identify bear damage hotspots in Croatia. Our analysis is based on damage reports provided by hunting organizations to the Croatian Ministry of Agriculture during 2004–2014. The highest number of claims were made for damage to field crops and orchards. Damage to livestock, agricultural crops and beehives resulted in the highest total cost to farmers. Damage to beehives and to automatic corn feeders for game species incurred the highest cost per damage event. We identified a hotspot for bear damage claims in Croatia, located near Risnjak National Park and the border with Slovenia. Damage appears higher in areas that have more villages closer to protected areas and a greater per cent of forest cover, indicating a synergistic effect of protected environments that facilitate bear movements and the presence of human activities that provide easily accessible food for bears.
Journal Article