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For the purposes of this study, we defined long-term species monitoring as the repeated, systematic collection of data with the intention to detect changes over time in the abundance or distribution of 1 or more predefined taxa or taxonomic groups. The bias of monitoring data toward certain vertebrate taxa, particularly charismatic species, and toward developed countries reflects a similar bias across biodiversity information more generally (Amano et al., 2016; Beck et al., 2014; McRae et al., 2017; Scheele et al., 2019; Troudet et al., 2017). The 41 countries selected for the search included the 7 countries targeted for in-country searches by partners, as described above, to obtain a measure of detectability, all 17 megadiverse countries (Mittermeier et al., 1997), all of the world's 10 largest countries, and a number of randomly selected countries in regions underrepresented by other methods (Appendix S2). Keywords: biodiversity surveillance; citizen science; megadiverse countries; population trends; taxonomic bias; ciencia ciudadana; países megadiversos; sesgo taxonómico; tendencias poblacionales; vigilancia de la biodiversidad; ; ; ; ; EN biodiversity surveillance citizen science megadiverse countries population trends taxonomic bias ciencia ciudadana países megadiversos sesgo taxonómico tendencias poblacionales vigilancia de la biodiversidad 1 14 14 03/02/22 20220201 NES 220201 INTRODUCTION Data on long-term trends in species abundance and distribution underpin efforts to track and understand the global biodiversity crisis, to target scarce conservation resources to priority species and sites, and to quantify the impact of those investments (Borges et al., 2018; Butchart et al., 2010; Díaz et al., 2019). [Extracted from the article]

Bats are important ecosystems service providers, make a significant contribution to biodiversity and can be important pests and disease vectors. In spite of this, information on their migration and dispersal patterns is limited., In temperate bats, migration is most evident in females. This reflects seasonal differences in their habitat requirements, and the fact that seasonally suitable sites can be geographically distant. Tropical bats mainly migrate to track variation in food availability., Little direct information is available on the patterns and drivers of bat dispersal, although drivers may include mate competition and inbreeding avoidance. In many temperate species, differential energy requirements and local resource competition among the sexes drive sexual segregation in the summer: females remain philopatric to their natal region, and frequently to their natal colony, while males disperse. In contrast, many tropical Pteropodidae form single-male/multi-female groups in which local resource defence contributes to female-biased or all-offspring dispersal from the natal site., Population genetic studies are the most common source of evidence used to infer the spatial dynamics of bats. As expected, migratory species tend to have less genetically structured populations over large geographical scales due to mating outside of breeding areas, weak migratory connectivity and long-distance movements. In contrast and as expected, populations of sedentary species tend to be more differentiated at smaller geographical scales., Despite this general pattern, a range of factors, including historical events, dispersal capabilities, and behavioural, ecological and geographical barriers, are implicated in the genetic partitioning of bat populations, irrespective of movement patterns. These factors limit the study of bat movements using only genetic methods., Combining population genetics with other methods, such as mark-recapture, tracking or stable isotope analysis, should provide more insight into the movements of these ecologically and economically important species. [ABSTRACT FROM AUTHOR]

The article presents a study that determines the selection of old stone buildings as summer day roost of brown long-eared bats. The study compares five internal and three landscape features of roosts in stone buildings with the random and paired unoccupied buildings in Cornwall, England to determine the roost selectivity. It selects that bats based on their vicinity, and connection, to foraging habitat. It describes the quality of the roosts and the influence in the building microclimate. It also reveals that Plecotus auritus is selective of its roosts both at the building and the landscape levels.

Sea-level rise (SLR) is expected to cause major changes to coastal wetlands, which are among the world's most vulnerable ecosystems and are critical for nonbreeding waterbirds. Because strategies for adaptation to SLR, such as nature-based solutions and designation of protected areas, can locally reduce the negative effects of coastal flooding under SLR on coastal wetlands, it is crucial to prioritize adaptation efforts, especially for wetlands of international importance for biodiversity. We assessed the exposure of coastal wetlands important for nonbreeding waterbirds to projected SLR along the Mediterranean coasts of 8 countries by modeling future coastal flooding under 7 scenarios of SLR by 2100 (from 44- to 161-cm rise) with a static inundation approach. Exposure to coastal flooding under future SLR was assessed for 938 Mediterranean coastal sites (≤30 km from the coastline) where 145 species of nonbreeding birds were monitored as part of the International Waterbird Census and for which the monitoring area was delineated by a polygon (64.3% of the coastal sites monitored in the Mediterranean region). Thirty-four percent of sites were threatened by future SLR, even under the most optimistic scenarios. Protected study sites and study sites of international importance for waterbirds were, respectively, 1.5 and 2 times more exposed to SLR than the other sites under the most optimistic scenario. Accordingly, we advocate for the development of a prioritization scheme to be applied to these wetlands for the implementation of strategies for adaptation to SLR to anticipate the effects of coastal flooding. Our study provides major guidance for conservation planning under global change in several countries of the Mediterranean region., (© 2024 The Authors. Conservation Biology published by Wiley Periodicals LLC on behalf of Society for Conservation Biology.)

In France, illegal hunting of the endangered ortolan bunting Emberiza hortulana has been defended for the sake of tradition and gastronomy. Hunters argued that ortolan buntings trapped in southwest France originate from large and stable populations across the whole of Europe. Yet, the European Commission referred France to the Court of Justice of the European Union (EU) in December 2016 for infringements to legislation (IP/16/4213). To better assess the impact of hunting in France, we combined Pan-European data from archival light loggers, stable isotopes, and genetics to determine the migration strategy of the species across continents. Ortolan buntings migrating through France come from northern and western populations, which are small, fragmented and declining. Population viability modeling further revealed that harvesting in southwest France is far from sustainable and increases extinction risk. These results provide the sufficient scientific evidence for justifying the ban on ortolan harvesting in France.