Adaptation to similar selective pressures can explain morphological convergence between closely related species in contact zones. Geostatistics and Geographical Information System were used to identify multi‐scale patterns of morphological variability and test the hypothesis of morphological convergence due to local environmental pressures in the contact areas between Vipera aspis and Vipera latastei in the Iberian Peninsula. Nine morphological traits from 630 and 362 vipers at regional and local scale, respectively, were interpolated by Kriging to generate surfaces of morphological variation. Kriging is a geostatistical algorithm that allows investigating the spatial structure of data with statistical models. At both scales, a convergent north–south pattern in morphological variability was observed and the contact areas were identified as integration zones where intermediate vipers are found. Significant correlations were found between surfaces of univariate and multivariate traits, with precipitation and temperature seasonality. Thus, several morphological traits were apparently under local environmental selection. Nevertheless, the influence of biotic pressures and gene flow on morphological convergence of vipers in contact zones deserves further study.

Agricultural intensification has been associated with biodiversity declines, habitat fragmentation and loss in a number of organisms. Given the prevalence of this process, there is a need for studies clarifying the effects of changes in agricultural practices on local biological communities; for instance, the transformation of traditional rainfed agriculture into intensively irrigated agriculture. We focused on pond-breeding amphibians as model organisms to assess the ecological effects of agricultural intensification because they are sensitive to changes in habitat quality at both local and landscape scales. We applied a metacommunity approach to characterize amphibian communities breeding in a network of ponds embedded in a terrestrial habitat matrix that was partly converted from rainfed crops to intensive irrigated agriculture in the 1990s. Specifically, we compared alpha and beta diversity, species occupancy and abundance, and metacommunity structure between irrigated and rainfed areas. We found strong differences in patterns of species occurrence, community structure and pairwise beta diversity between agricultural management groups, with a marked community structure in rainfed ponds associated with local features and the presence of some rare species that were nearly absent in the irrigated area, which was characterized by a random community structure. Natural vegetation cover at the landscape scale, significantly lower on the irrigated area, was an important predictor of species occurrences. Our results suggest that maintaining both local and landscape heterogeneity is key to preserving diverse amphibian communities in Mediterranean agricultural landscapes.

The American mink Neovison vison is a widely distributed species in Spain, for which important basic ecological data are lacking. We studied mink den site selection in a location in central Spain during the winter of 2008/09 using snow‐tracking and direct observation. Dens were located more frequently in tree roots (51.9%; N = 79) inside emergent vegetation (15.2%) and on human‐created enbankments (15.2%). Human buildings and burrows were scarcely used (< 10%). The logistic regressions we carried out supported that minks used secondary river beds for shelter more often than their availability in the environment should predict. These secondary areas are characterised by their low width and the frequent presence of small streams (of < 1m width). In rough terms, this pattern could be a way of avoiding potential interactions with other animals sharing the same habitat, and also for thermoregulation while resting. On the basis of the wide habitat niche, ecosystem management as a measure of mink control appears to be ineffective.

Protected areas in Latin America are typically surrounded by ranching landscapes, where large carnivores such as the jaguar (Panthera onca), co‐habit with ranchers, which potentially causes negative interactions. It is crucial, however, recognize that effective coexistence hinges on developing conservation policies that not only address these negative interactions but also embrace the diversity of the landowners' perspectives, aligning with the preferences of communities to prevent conservation conflicts. In this study, we conducted discrete choice experiments (DCE) with 196 ranchers in five localities in the Calakmul region to assess their preferences about four key attributes related to jaguar conservation: percentage of forests, livestock management practices, the number of desired jaguars and the willingness to invest in measures that promote coexistence between livestock and jaguars. Our research reveals that ranchers' preferences are diverse. Some favour increased forest cover and silvopastoral ranching, while others prefer reduced forest areas and the absence of jaguars. To address these diverse viewpoints and promote positive preferences, we must develop a comprehensive strategy considering the full spectrum of needs and preferences. Therefore, conservation incentives must be designed to address local communities' fundamental needs, such as education, healthcare, women's empowerment and cultural preservation. Participatory diagnostics involving local communities are imperative to accurately identify these needs. The observed heterogeneity of preferences in our study emphasizes the importance of integrating these diverse perspectives into conservation policies for a more balanced and equitable distribution of resources. Our findings demonstrate the value of DCEs in providing valuable information for developing more effective and socially acceptable jaguar conservation policies that consider diverse perspectives and the people's characteristics in our sample population. Read the free Plain Language Summary for this article on the Journal blog.

There are many biometric differences between the males and females of the European pond turtle (Emys orbicularis) as regards their size, colouring, the shape of the plastron, tail, etc. The males use their claws to grasp the female during copulation and hence sexual selection should favour the males that have larger claws, which allow them to grasp the female better. Here, we address this type of sexual dimorphism in a comparative analysis of indices obtained from claw length, the length of the carapace and the locality where individuals were sampled. The results show that the curvature of the claws differs between the two sexes, being longer in males and increasing with age, size, and hence, the state of sexual maturity, than in females. Greater claw length could confer advantages for males when grasping the carapace of females, and hence, improve their reproductive fitness. Importance in the reproductive success that might have this feature in males could originate future studies that will relate the shape, thickness, length and other measures of the claws in males with their reproductive success in different populations, genetic variety, and most importantly, viability of populations.