Joaquín Pérez

Junta de Andalucía

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Papers

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i-10 index

Research Trends

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Co-Authors

Javier Rodríguez-Siles

Centro Regional de Selección y Reproducción Animal

José María Gil‐Sánchez

Universidad de Granada

MÁ

Miguel Ángel Díaz-Portero

Junta de Andalucía

ÁA

Ángel Arredondo

Habitat for Humanity

Inmaculada Cancio

Universidad Rey Juan Carlos

Juan Manuel Sáez

Universidad de Granada

F. Javier Herrera-Sánchez

Universidad de Granada

Abdeljebbar Qninba

Mohammed V University

Gerardo Valenzuela

University of Chile

Jesús de Lucas

Regional Government of Castile-La Mancha

Cooperative Institutions

Agencia de Medio Ambiente y Agua de Andalucía

Junta de Andalucía

Universidad de Granada

University of Almería

Consejo Superior de Investigaciones Científicas

Universidad Complutense de Madrid

Universitat Autònoma de Barcelona

Estación Biológica de Doñana

Centre for Research on Ecology and Forestry Applications

Universidad Rey Juan Carlos

Author Statistics

Papers

Citation

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Exploratory Factor Analysis, Criterion and Psychometric Properties of a Proposed Scale to Measure the Risk of Eating Disorders in Adolescents (PETCA)

Societies (2023)

Montserrat Monserrat Hernández Ángeles Arjona Garrido Juan Carlos Checa Olmos Darío Salguero García Joaquín Pérez

This paper deals with the different risk scales of eating disorder in adolescents. The main objective is to create a scale to measure the risk of developing eating disorders using social and behavioral variables. The trial sample included 605 adolescents, aged 12–17 years (M = 14.27; SD 1.44), randomly selected from several centers who requested to participate in a health program. After using the principal component extraction method (PCA) with adequate internal consistency and reliability, and with a total explained variance of 60%, factor analysis showed five factors: satisfaction with body image, self-esteem, use of social networks, negative relationship with food, and image and social recognition. Pearson’s correlation coefficients between our scale and reference scale (SCOFF) factors provided information on converging validity. However, the Cronbach’s alpha values for dimensions 3 and 4 failed to reach the desired scores, and it was noted that not all dimensions had the same number of elements. Therefore, future interventions and proposals to develop a stronger scale are proposed. Despite the drawbacks, our findings provide a solid foundation for further analysis to find the most reliable method of analysis possible in this innovative area. We believe that this scale can help both health and education professionals to develop effective interventions.

Exploratory factor analysis

10.3390/soc13070156

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Citations (2)

The use of camera trapping for estimating Iberian lynx (Lynx pardinus) home ranges

European Journal of Wildlife Research (2011)

José María Gil‐Sánchez Manuel Gómez del Moral José Bueno Javier Rodríguez-Siles Santiago de Lillo

Camera trap

Home range

Tracking (education)

10.1007/s10344-011-0533-y

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Citations (48)

Awareness of the professional needs of secondary school teachers through self-directed professional development

Análisis y Modificación de Conducta (2023)

Darío Salguero García Milagros Padilla Orta Montserrat Hernández Joaquín Pérez

The importance of teacher professional development has been extensively studied, with researchers agreeing that opportunities for professional development can improve both teacher education and student learning outcomes. This study was conducted to evaluate the effectiveness of a new approach to professional development, known as self-directed professional development. It focused on the knowledge, participation, and effectiveness of voluntary professional development methods in secondary schools, with a specific emphasis on Almería's secondary school teachers. The study utilized the systematic sampling method to select 194 respondents from the sample group. These respondents were given a Likert scale questionnaire, and the data collected were analyzed using statistical methods such as percentage, mean, standard deviation, and chi-square test. The results showed that even though the secondary school teachers had limited knowledge about self-directed professional development and online resources, they still informally participated in self-directed professional development.

10.33776/amc.v49i181.7812

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Citations (0)

Evaluating methods for surveying the Endangered Cuvier's gazelleGazella cuvieriin arid landscapes

Oryx (2016)

José María Gil‐Sánchez F. Javier Herrera-Sánchez Begoña Álvarez Ángel Arredondo Jesús Bautista

Abstract The Endangered Cuvier's gazelle Gazella cuvieri is an endemic ungulate of north-western Africa. Information on the species has been based primarily on non-systematic surveys, and the corresponding status estimates are of unknown quality. We evaluate the effectiveness and efficiency of two field methods for systematic surveys of populations of Cuvier's gazelle in arid environments: distance sampling (based on sightings) and sampling indirect sign (tracks and scats). The work was carried out in the north-western Sahara Desert, in Morocco, where what is possibly the largest population of Cuvier's gazelle persists. A logistically viable survey was conducted over a total area of c. 20.000 km 2 in 10 expeditions during 2011–2014. A total of 67 sites were surveyed, with 194 walking surveys (2,169 km in total). Gazelle signs were detected at 50 sites, and gazelles were sighted at 21 sites (61 individuals). We found a relationship between sightings and abundance indices based on indirect sign, which could be useful for population monitoring or ecological studies. Additionally, the data could be used in occupancy modelling. Density estimates based on distance sampling required considerable effort; however, it is possible to survey large areas during relatively short campaigns, and this proved to be the most useful approach to obtain data on the demographic structure of the population.

Distance sampling

Ungulate

Occupancy

10.1017/s0030605316000430

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Citations (17)

Feeding Specialization of Honey Badgers in the Sahara Desert: A Trial of Life in a Hard Environment

Diversity (2020)

José María Gil‐Sánchez F. Javier Herrera-Sánchez Javier Rodríguez-Siles Juan Manuel Sáez Miguel Ángel Díaz-Portero

The honey badger (Mellivora capensis) is a medium-sized carnivore distributed throughout Africa to the Arabian Peninsula, Iran, Turkmenistan, and India. However, available information on its ecology is very scarce. We studied its feeding ecology in the remote north-western Sahara Desert, based on the contents of 125 fecal samples collected during large scale surveys. Samples were confirmed to belong to honey badgers by camera trapping and genetic analyses. Barely 18 prey species were detected. The diet primarily consisted of spiny-tailed lizards Uromastyx nigriventris and U. dispar (72% of volume in scats). Secondary prey items were arthropods (14%), small mammals (8%), other reptiles (4%), and eggs (0.8%). Some small geographic and temporal differences were related to the consumption of beetle larvae and rodents as alternative prey. Camera trapping and distance sampling surveys showed that diel activities did not overlap between honey badgers and spiny-tailed lizards, suggesting that badgers primarily dig lizards out of their burrows when inactive. Consumption of spiny lizards by other sympatric meso-carnivores was < 6.1% of occurrence (223 analyzed scats); the honey badger behaved as a trophic specialist in the Sahara, probably thanks to exclusive anatomical adaptations for digging. We discuss the role of this circumstance minimizing the exploitative competition, which could allow the survival of this large mustelid in this low productive and highly competitive environment.

Carnivore

10.3390/d12020059

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Citations (4)

Identifying priority conservation areas in a Saharan environment by highlighting the endangered Cuvier’s Gazelle as a flagship species

Scientific Reports (2020)

F. Javier Herrera-Sánchez José María Gil‐Sánchez Begoña Álvarez Inmaculada Cancio Jesús de Lucas

Abstract Monitoring populations and designing effective conservation actions for endangered species present significant challenges. An accurate understanding of current distribution, ecological traits and habitat requirements is imperative in formulating conservation strategies. Recent surveys on the southernmost Cuvier’s Gazelle ( Gazella cuvieri ) population, an ungulate endemic to North Africa, showcase its importance in terms of numbers and genetic diversity. This population inhabits a remote region in the extreme north-western portion of the Sahara Desert and has not been well studied. Here, we examine the potential distribution of Cuvier’s Gazelle and the environmental factors limiting the species in a Saharan environment, by combining broad-scale field survey data and species distribution models. Our objective was to identify high priority conservation areas in the southernmost known portion of the species’ distribution by modelling habitat selection at the landscape scale using a predictive distribution map. Our results show that the distribution of Cuvier’s Gazelle is strongly related to mountainous areas with heterogeneous terrain and remoteness from large human settlements over other ecological factors that had less impact on the species’ presence and distribution. We also provide a quantitative estimate of the potential distribution range of Cuvier’s Gazelle in southern Morocco, identifying two well-demarcated key areas. The two core areas currently contain enough rugged terrain isolated from human encroachment to support the endangered species in this harsh desert environment. We encourage the implementation of conservation planning for Cuvier’s Gazelle as an “ umbrella species ”, which will confer effective protection to higher-quality habitat zones and co-occurring species, leading to sustainable and ecologically responsible development in the region.

Species distribution

Flagship Species

10.1038/s41598-020-65188-6

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Citations (11)

Applications of non-intrusive methods to study the sand cat: a field study in the Sahara Desert

European Journal of Wildlife Research (2023)

José María Gil‐Sánchez F. Javier Herrera-Sánchez Javier Rodríguez-Siles Miguel Ángel Díaz-Portero Ángel Arredondo

Abstract Surveys based on indirect signs and camera trapping are two non-invasive methods extensively used for monitoring elusive mammals. Both approaches can be useful to obtain key information on wildlife in remote areas, since they may allow for the logistically viable design of optimal field frameworks. The sand cat ( Felis margarita ) is a feline that inhabits the Sahara Desert, the Arabian Peninsula, and western Asian deserts. Its basic ecology is poorly known and the status and impacts of threats are difficult to assess. Some local population declines have been detected, and more research is needed. Based on field surveys carried out in the Atlantic Sahara, we have evaluated the applications of both methods to study this species. Our results show that (a) camera trapping provided reliable data on several key aspects of its ecology, (b) walking surveys to collect feces for molecular data failed completely, and (c) for footprints, identification problems and the marked effects of the absence of optimal substrates and the prevalence of wind are relevant handicaps. Beyond this evaluation, we provide for the first time some key aspects of the ecology of sand cats in the Sahara Desert, including habitat selection, density, diel activity, and predator–prey relationships.

Desert (philosophy)

10.1007/s10344-023-01645-7

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Citations (1)

Adolescent Behaviours and Their Relationship to the Risk of Developing Eating Disorders

Healthcare (2023)

Joaquín Pérez Montserrat Monserrat Hernández Ángeles Arjona Garrido Darío Salguero García Juan Carlos Checa Olmos

Eating disorders (ED) in adolescents represent a significant problem in today’s society, with multiple factors influencing them, such as predisposing factors, precipitating factors and perpetuating factors. Objective: This paper aimed to determine the relationships between some of the factors considered to be predisposing and precipitating in terms of the development of ED in adolescents and to relate them to the SCOFF index. Participants: The sample was made up of 264 subjects aged between 15 and 19 (48.8% females and 51.1% males). Methods: This study was conducted in two phases. In the first study phase, a descriptive analysis of the sample was performed, encompassing the frequencies of the independent variables and dependent variable (ED). In the second phase of study, we created several linear regression models. Results: A total of 11.7% of adolescents are at high risk for ED, and the variables that predict the variability of manifesting the danger of ED are the following: physical self-conception and family relationships. Conclusions: This work shows the need to approach eating disorders in a multidisciplinary way (biological and social), since this will enable the disease to be better conceptualized and prevention guidelines to be more effective.

Sample (material)

10.3390/healthcare11040624

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Citations (2)

Human–felid conflict as a further handicap to the conservation of the critically endangered Iberian lynx

European Journal of Wildlife Research (2013)

Germán Garrote Guillermo López José María Gil‐Sánchez Eva Rojas Manuel Ruíz

10.1007/s10344-013-0695-x

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Citations (32)

Feeding Ecology of the Cuvier’s Gazelle (Gazella cuvieri, Ogilby, 1841) in the Sahara Desert

Animals (2023)

F. Javier Herrera-Sánchez Omar R. López Javier Rodríguez-Siles Miguel Ángel Díaz-Portero Ángel Arredondo

Knowledge of the feeding ecology of ungulates in arid biomes offers an interesting model for understanding the drought resistance of large desert-adapted herbivores, a crucial issue in the face of increasing desertification due to climate change. To assess the feeding ecology of the endangered Cuvier's gazelle (Gazella cuvieri) in the Sahara desert, we used a multi-method approach combining faecal samples, direct observations, and the recording of indirect signs of feeding. We hypothesised that browser behaviour is the best foraging strategy for species living in hyper-arid environments, mainly due to long periods without grazing opportunities. Complementarily, we explored the effects of the main environmental descriptors (rainfalls and NDVI) on feeding patterns and diet quality. We found that Cuvier's diets are based mainly on acacias (Vachellia tortilis, V. flava) and occasionally on the annual forb Anastatica hierochuntica. In total, eighteen species (five trees, nine shrubs, three herbs, and one grass) belonging to fifteen families were recorded. Our result confirmed the browsers' characteristic of this species, reaffirming its ability to settle in a hostile environment. Acacias stand out as key species consumed at the southernmost limit of their range; hence, future conservation plans and strategies should take this into account for the survival of Cuvier's gazelle in desert environments.

Biome

Desertification

10.3390/ani13040567

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Citations (2)