SwePub - sökning: L773:2578 4854

Numrering	Referens	Omslagsbild	Hitta
1.	Beaurepaire, Alexis L., et al. (författare) Population genetics for insect conservation and control 2024 Ingår i: Conservation Science and Practice (CSP). - : John Wiley & Sons. - 2578-4854. ; 6:3 Forskningsöversikt (refereegranskat)abstract Insects are essential not only for ecosystem functioning and food security but also comprise some of the world's most destructive invasive species. Therefore, both insect declines and invasions raise major conservation concerns globally and call for respective conservation or mitigation measures. However, studies of insects are hampered by intrinsic biological features of these organisms, which include extreme population fluctuations, a huge diversity of ecological strategies, and common cryptic species. Population genetics provides a large toolkit to adequately accommodate those features, thereby enabling researchers to inform and monitor the efficacy of conservation and mitigation programs. Here, we provide an overview of the molecular and analytical methods that are relevant to insect conservation or mitigation and highlight the challenges involved in their implementation. We detail how and why temporal changes in genetic diversity, population structure and migration, and the genetic basis of adaptation should be taken into account to inform insect management programs. Finally, we review the barriers to the broad adoption of population genetics in insect research and provide guidelines to facilitate the use of these methods by stakeholders. Overall, this review provides theoretical and practical guidelines for implementing population genetics in both insect conservation and control.
2.	Bertola, Laura D., et al. (författare) A pragmatic approach for integrating molecular tools into biodiversity conservation 2024 Ingår i: Conservation science and practice. - 2578-4854. ; 6:1 Tidskriftsartikel (refereegranskat)abstract Molecular tools are increasingly applied for assessing and monitoring biodiversity and informing conservation action. While recent developments in genetic and genomic methods provide greater sensitivity in analysis and the capacity to address new questions, they are not equally available to all practitioners: There is considerable bias across institutions and countries in access to technologies, funding, and training. Consequently, in many cases, more accessible traditional genetic data (e.g., microsatellites) are still utilized for making conservation decisions. Conservation approaches need to be pragmatic by tackling clearly defined management questions and using the most appropriate methods available, while maximizing the use of limited resources. Here we present some key questions to consider when applying the molecular toolbox for accessible and actionable conservation management. Finally, we highlight a number of important steps to be addressed in a collaborative way, which can facilitate the broad integration of molecular data into conservation. Molecular tools are increasingly applied in conservation management; however, they are not equally available to all practitioners. We here provide key questions when establishing a conservation genetic study and highlight important steps which need to be addressed when these tools are globally applied.image
3.	Bhardwaj, Manisha (författare) Green bridges in a re-colonizing landscape: Wolves (Canis lupus) in Brandenburg, Germany 2021 Ingår i: Conservation science and practice. - : Wiley. - 2578-4854. ; 3 Tidskriftsartikel (refereegranskat)abstract Gray wolves (Canis lupus) are recolonizing many parts of central Europe and are a key part of international conservation directives. However, roads may hinder the reestablishment of gray wolves throughout their historic range by reducing landscape connectivity and increasing mortality from wildlife-vehicle collisions. The impact of roads on wolves might be mitigated by the construction of green bridges (i.e., large vegetated overpasses, designed to accommodate the movement of wildlife over transportation corridors). In this study, we investigated the seasonal and diurnal use of a green bridge by wolves and three of their main prey species: red deer (Cervus elaphus), roe deer (Capreolus capreolus), and wild boar (Sus scrofa). We found that all four species used the green bridge. Wolves were most active in winter, whereas prey species were most active in spring and summer. All species were more active at dusk and during the night than at dawn and during the day. We found no evidence that wolf presence influenced bridge-use by prey species, consistent with other tests of the prey-trap hypothesis. Our results suggest that green bridges are used by wolves and prey species alike, and may foster connectivity and recolonization for these species in rewilding landscapes.
4.	Blary, Constance, et al. (författare) Detection of wind turbines rotary motion by birds : A matter of speed and contrast 2023 Ingår i: Conservation Science and Practice. - 2578-4854. ; 5:10 Tidskriftsartikel (refereegranskat)abstract To reduce bird collisions on wind turbines, Automatic Detection Systems have been developed to locate approaching birds and trigger turbines to slowdown to 2–3 rotations per minute (rpm). However, it is unknown whether birds can detect this reduced speed and avoid the turbine. We conducted an operant conditioning experiment on domestic doves (Streptopelia roseogrisea) and Harris's hawks (Parabuteo unicinctus) to assess their ability to discriminate between stationary and rotating miniature wind turbines, depending on the rotation speed and the contrast between the white blades and the background (only for doves for the latter). At high contrast, regardless of the speed tested, hawks were able to differentiate between the rotating and stationary turbines, while doves were not able to discriminate the slow-rotating turbine (3 rpm) from the stationary one. The discrimination threshold increased to 8 rpm for the doves when the contrast was reduced. Our results suggest that the residual wind turbine speed of 2–3 rpm may not be detected by all bird species under all environmental conditions. Increasing the contrast between wind turbines and their environment may improve the detection of low-speed rotation by some birds, otherwise, complete turbine shutdown should be recommended.
5.	Cooke, Steven J., et al. (författare) A freshwater perspective on the United Nations decade for ecosystem restoration 2022 Ingår i: Conservation Science and Practice. - : John Wiley & Sons. - 2578-4854. ; 4:11 Tidskriftsartikel (refereegranskat)abstract Globally, ecosystems have suffered from anthropogenic stressors as we enter the sixth mass extinction within the Anthropocene. In response, the UN has declared 2020-2030 the Decade for Ecosystem Restoration, aiming to mitigate ecosystem degradation and biodiversity loss. Freshwater ecosystems are disproportionately impacted relative to marine or terrestrial systems and ecological restoration is needed to preserve biodiversity and ecosystem services. Paradoxically, freshwater is among Earth's most vital ecosystem services. Here we identify meaningful considerations from a freshwater perspective that will lead to progression toward the restoration of freshwater ecosystems: work across terrestrial and freshwater boundaries during restoration, emulate nature, think and act on a watershed scale, design for environmental heterogeneity, mitigate threats alongside restoration, identify bright spots, think long term (a decade is not long enough), and embrace social-ecological systems thinking. Further, we reflect upon the three implementation pathways identified by the UN to translate these considerations into practice in hopes of "bending the curve" for freshwater biodiversity and ecosystems. Pathway 1, building a global movement, could create a network to share experiences and knowledge promoting vicarious learning, ultimately leading to more effective restoration. Pathway 2, generating political support, will be necessary to institutionalize ecosystem protection and restoration by demonstrating the value of freshwater ecosystems and biodiversity. Pathway 3, building technical capacity, aims to improve the current and often ineffective restoration toolbox by incorporating evidence syntheses (i.e., appraisal of evidence base) and Indigenous ways of knowing (i.e., two eyed seeing). Given that freshwater ecosystems are in dire need of repair, it is our hope that these considerations and implementation pathways will contribute to an actionable and productive Decade for Ecosystem Restoration.
6.	Cromsigt, Joris (författare) The Protected Area Paradox and refugee species: The giant panda and baselines shifted towards conserving species in marginal habitats 2020 Ingår i: Conservation science and practice. - : Wiley. - 2578-4854. ; 2 Tidskriftsartikel (refereegranskat)abstract Paradoxically, despite the growth in protected areas globally, many species remain threatened and continue to decline. Attempts to conserve species in suboptimal habitats (i.e., as refugee species) may in part explain this Protected Area Paradox. Refugee species yield poor conservation outcomes as they suffer lower densities and fitness. We suggest that the giant panda may serve as an iconic example, reflecting the contraction and shift in the giant panda's range, diet and habitat use over the past 3,500years, coinciding with increasing human pressure, and now maintained by conservation efforts, this due to shifted baselines. The global bias of protected area location to less productive habitats indicates that this problem may be widespread. We urgently need efforts to identify victims of refugee species status to allow improved conservation management globally, reducing the paradoxical outcomes of our conservation efforts.
7.	Epstein, Yaffa, et al. (författare) When is it legal to hunt strictly protected species in the European Union? 2019 Ingår i: Conservation Science and Practice. - : Wiley. - 2578-4854. ; 1:3 Forskningsöversikt (refereegranskat)abstract In the European Union (EU), the Habitats Directive bans the killing of strictly protected animal species. The killing of individual animals may nevertheless be allowed when there is no satisfactory alternative and doing so would not be detrimental to the maintenance of species populations at favorable conservation status for one of five enumerated reasons. This exception has been used by national authorities to allow hunting, frequently triggering litigation. Here, we review several contested aspects of the provisions allowing exceptions from strict protection, particularly those in the controversial Article 16(1)(e), in order to clarify Member States' discretion in allowing hunting. Correctly interpreting these provisions is necessary to ensure species are protected at the level intended by the Habitats Directive, and that their conservation status is improved or maintained. Our review suggests that it would be very difficult for national authorities to allow the hunting of strictly protected species while complying with EU law.
8.	Hinneberg, Heiko, et al. (författare) Truly invasive or simply non-native? Insights from an artificial crested newt hybrid zone 2022 Ingår i: Conservation Science and Practice. - : John Wiley & Sons. - 2578-4854. ; 4:8 Tidskriftsartikel (refereegranskat)abstract Introductions of non-native species can pose serious threats to native populations and ecosystems. However, the impact of introduced species depends on intrinsic characteristics, local habitat conditions, and the interaction with native species. Case-specific management strategies may therefore be required. Using phenotypic characters and molecular markers for species identification, we provide insights into an artificial hybrid zone between two closely related newt species, the native Triturus cristatus and the introduced T. carnifex, near Tübingen, south-west Germany. Our analyses revealed a central Italian origin of the non-native T. carnifex and suggested their sustained presence in the study area for at least six years, probably much longer. In some ponds, extensive hybridization with native T. cristatus was detected. However, we found no evidence for a displacement of the native species by its non-native congener. The gradient from pure T. carnifex to pure T. cristatus currently extends over 7 km. A future expansion of the hybrid zone and swamping of a neighboring T. cristatus meta-population appears unlikely under the local configuration of breeding ponds. We propose to monitor the hybrid zone using genetic markers for evaluating the direction and speed of gene flow, complemented by capture-recapture studies to reveal trends in species-specific population sizes. To protect the native T. cristatus, we recommend practitioners to maintain their habitats, for example, by preventing illegal release of gold fish, by counteracting early drying of the breeding ponds, and by regularly cutting back trees and shrubs along the shoreline.
9.	Hofmeester, Tim (författare) A review of factors to consider when using camera traps to study animal behavior to inform wildlife ecology and conservation 2020 Ingår i: Conservation science and practice. - : Wiley. - 2578-4854. ; 2 Forskningsöversikt (refereegranskat)abstract Camera traps (CTs) are an increasingly popular method of studying animal behavior. However, the impact of cameras on detected individuals-such as from mechanical noise, odor, and emitted light-has received relatively little attention. These impacts are particularly important in behavioral studies in conservation that seek to ascribe changes in behavior to relevant environmental factors. In this article, we discuss three sources of bias that are relevant to conservation behavior studies using CTs: (a) disturbance caused by cameras; (b) variation in animal-detection parameters across camera models; and (c) biased detection across individuals and age, sex, and behavioral classes. We propose several recommendations aimed at mitigating responses to CTs by wildlife. Our recommendations offer a platform for the development of more rigorous and robust behavioral studies using CT technology and, if adopted, would result in greater applied benefits for conservation and management.
10.	Januchowski-Hartley, Stephanie R., et al. (författare) Perceptions of a curriculum vitae clinic for conservation science students 2019 Ingår i: Conservation Science and Practice. - : John Wiley & Sons. - 2578-4854. ; 1:6, s. 1-7 Tidskriftsartikel (refereegranskat)abstract We led a curriculum vitae (CV) clinic aimed at student participants attending the 28th International Congress for Conservation Biology (ICCB 2017) in Cartagena, Colombia. The CV Clinic was a pilot program consisting of resources to assist with developing an effective CV and involving preconference and at-conference reviews of student attendees' CVs. Here, we explore our experiences in organizing the CV Clinic as well as nonparticipant and participant perceptions of the clinic. We used an online standardized interview form to gather qualitative data on nonparticipant and participant perceptions of the CV Clinic, and to explore how such a CV Clinic program could best align with student needs. Most respondents who submitted their CV for review ahead of ICCB 2017 (n = 9) found the template and guidance useful. Half of the respondents who did not participate in the CV Clinic perceived the clinic as duplicating services provided by their academic institutions. Both participant and nonparticipant respondents perceived value in such a CV Clinic, but also believed that adjustments could be made to make the CV review part of a broader professional development program lead by Society for Conservation Biology (SCB). Key lessons learned from the CV Clinic include the need to: (a) document and evaluate professional development initiatives within SCB; (b) better understand and account for the diversity of student needs before program creation; and (c) pilot and evaluate appropriateness of different locations, frequency, and duration of professional development programs.
11.	Jönsson, Jimmy, et al. (författare) The shifting society syndrome : Values, baselines, and Swedish forest conservation in the 1930s and 2010s 2021 Ingår i: Conservation Science and Practice. - : John Wiley & Sons. - 2578-4854. ; 3:10 Tidskriftsartikel (refereegranskat)abstract This study addresses a response to shifting baseline syndrome (SBS), a syndrome implying that land managers' acceptance of environmental change declines gradually due to lack of historical knowledge. Some actions to counteract SBS are haunted by methodological problems associated with measuring natural states and ignoring societal effects on ideas of naturalness. To balance methodological discussions of SBS, this study analyzes the social contexts of baseline demarcations historically. It compares baselines in two Swedish forest conservation debates-about the Fiby forest in the 1930s and the Ojnare forest in the 2010s-focusing on scalable and unscalable values. To operationalize shifting societal criteria for baseline demarcations, we introduce the "shifting society syndrome" concept. The study identifies several societal shifts and shows that Fiby's baseline was shaped by the scalable value of age and the nonscalable values of uniqueness and Swedishness, and Ojnare's by the scalable value of biodiversity and the nonscalable values of uniqueness and wildness. We argue that values, scalability, and historical change are crucial variables in the practice of demarcating baselines and that intellectual history is a useful tool for methodological self-reflection in SBS research.
12.	Kershaw, Francine, et al. (författare) The Coalition for Conservation Genetics : Working across organizations to build capacity and achieve change in policy and practice 2022 Ingår i: Conservation Science and Practice. - : Wiley. - 2578-4854. ; 4:4 Tidskriftsartikel (refereegranskat)abstract The Coalition for Conservation Genetics (CCG) brings together four eminent organizations with the shared goal of improving the integration of genetic information into conservation policy and practice. We provide a historical context of conservation genetics as a field and reflect on current barriers to conserving genetic diversity, highlighting the need for collaboration across traditional divides, international partnerships, and coordinated advocacy. We then introduce the CCG and illustrate through examples how a coalition approach can leverage complementary expertise and improve the organizational impact at multiple levels. The CCG has proven particularly successful at implementing large synthesis-type projects, training early-career scientists, and advising policy makers. Achievements to date highlight the potential for the CCG to make effective contributions to practical conservation policy and management that no one “parent” organization could achieve on its own. Finally, we reflect on the lessons learned through forming the CCG, and our vision for the future.
13.	Owen, Kylie, et al. (författare) An increase in detection rates of the critically endangered Baltic Proper harbor porpoise in Swedish waters in recent years 2021 Ingår i: Conservation Science and Practice. - : Wiley. ; 3:8 Tidskriftsartikel (refereegranskat)abstract The Baltic Proper harbor porpoise (Phocoena phocoena) is currently listed as critically endangered (CR), with the Static Acoustic Monitoring of the Baltic Sea Harbor Porpoise (SAMBAH) project concluding that only ~500 individuals remain. This population has a distribution that spans the waters of nine countries, making regular abundance estimates and management action challenging. Given the continued decline of other depleted porpoises, namely the vaquita (Phocoena sinus), the question is often raised about whether management action would even have a positive impact, or whether it is too late for population recovery. When abundance estimates are sparse over time, monitoring programs at key sites are likely to serve as the best indication of population trends, and may provide an early indication of changes at the population level. We compared passive acoustic monitoring data from 12 stations that were utilized both in the SAMBAH project (2011–2013) and as a part of the Swedish National Monitoring Program (2017–2020) to determine trends in detection rates. There was a 29% increase in mean daily detection rate during May–October (over the breeding season) between the two study periods. At the three stations with the highest number of detections, log linear regression revealed a yearly increase of 2.4% between 2011 and 2019 (−4.4–9.6, 95% CI). This may be indicative of the beginnings of population recovery, or simply an indication that the decline has stalled. The rate of increase is still well below what is likely to be possible for porpoise populations, and unlikely to buffer against any potential increase in pressures in the future. We therefore call for urgent management action to remove threats and protect this CR population, the only resident cetacean in the Baltic region, in order to give it the best chance of recovery.
14.	Parker, Kim, et al. (författare) Impacts of a trophy hunting ban on private land conservation in South African biodiversity hotspots 2020 Ingår i: Conservation science and practice. - : Wiley. - 2578-4854. ; 2:7 Tidskriftsartikel (refereegranskat)abstract Private land conservation areas (PLCAs) have become critical for achieving global conservation goals, but we lack understanding of how and when these areas respond to global pressures and opportunities. In southern Africa, where many PLCAs rely on trophy hunting as an income-generating strategy, a potential ban on trophy hunting locally or abroad holds unknown consequences for the future conservation of these lands. In this study, we investigate the consequences of a potential trophy hunting ban in PLCAs in two biodiversity hotspots in South Africa's Eastern and Western Cape provinces. We used semistructured interviews with PLCA managers and owners to elicit perceived impacts of an internationally imposed trophy hunting ban on conservation activities in PLCAs, and to probe alternative viable land uses. The majority of interviewees believed that both the economic viability of their PLCA and biodiversity would be lost following a hunting ban. Owners would primarily consider transitioning to ecotourism or livestock farming, but these options were constrained by the social-ecological context of their PLCA (e.g., competition with other PLCAs, ecological viability of farming). Our results suggest that a trophy hunting ban may have many unintended consequences for biodiversity conservation, national economies, and the livelihoods of PLCA owners and employees. Along with similar social-ecological studies in other areas and contexts, our work can inform policy decisions around global trophy hunting regulation.
15.	Raatikainen, Kaisa J., et al. (författare) Pathways towards a sustainable future envisioned by early-career conservation researchers 2021 Ingår i: CONSERVATION SCIENCE AND PRACTICE. - : John Wiley & Sons. - 2578-4854. ; 3:9 Tidskriftsartikel (refereegranskat)abstract Scientists have warned decision-makers about the severe consequences of the global environmental crisis since the 1970s. Yet ecological degradation continues and little has been done to address climate change. We investigated early-career conservation researchers' (ECR) perspectives on, and prioritization of, actions furthering sustainability. We conducted a survey (n = 67) and an interactive workshop (n = 35) for ECR attendees of the 5th European Congress of Conservation Biology (2018). Building on these data and discussions, we identified ongoing and forthcoming advances in conservation science. These include increased transdisciplinarity, science communication, advocacy in conservation, and adoption of a transformation-oriented social-ecological systems approach to research. The respondents and participants had diverse perspectives on how to achieve sustainability. Reformist actions were emphasized as paving the way for more radical changes in the economic system and societal values linked to the environment and inequality. Our findings suggest that achieving sustainability requires a strategy that (1) incorporates the multiplicity of people's views, (2) places a greater value on nature, and (3) encourages systemic transformation across political, social, educational, and economic realms on multiple levels. We introduce a framework for ECRs to inspire their research and practice within conservation science to achieve real change in protecting biological diversity.
16.	Robuchon, Marine, et al. (författare) Conserving species' evolutionary potential and history : Opportunities under the Kunming–Montreal Global Biodiversity Framework 2023 Ingår i: Conservation Science and Practice. - 2578-4854. ; 5:6 Tidskriftsartikel (refereegranskat)abstract Genetic diversity (GD) and phylogenetic diversity (PD) respectively represent species' evolutionary potential and history, and support most of the biodiversity benefits to humanity. Yet, these two biodiversity facets have been overlooked in previous biodiversity policies. As the Parties to the Convention on Biological Diversity (CBD) adopted the Kunming–Montreal Global Biodiversity Framework (GBF) in December 2022, we analyze how GD and PD are considered in this new framework and discuss how their incorporation in the GBF could strengthen their conservation. Although the inclusion of certain indicators could be elevated, both GD and PD are an integral part of the recently adopted GBF. This represents a significant improvement compared to the CBD strategic plan 2011–2020 and an unprecedented opportunity to bring species' evolutionary potential and history to the core of public biodiversity policies. We urge the scientific community to leverage this opportunity to actually improve the conservation of species' evolutionary potential and history.
17.	Romero, Miguel, et al. (författare) The risk of unintended deforestation from scaling sustainable livestock production systems 2021 Ingår i: Conservation science and practice. - : Wiley. - 2578-4854. ; 3 Tidskriftsartikel (refereegranskat)abstract Silvopastoral systems (SPS)-production systems integrating trees, forages, and livestock within the same land area-are recognized as critical for reducing tropical deforestation and improving livelihoods, ecosystem services, and carbon sinks. Yet, research on how scaling SPS influences forest cover changes at large geographical scales is scant. Our study delves deeper into the interlinkages between scaling SPS and deforestation. In two surveys conducted among 144 Colombian Amazon livestock producers with traditional or SPS farms, we assessed changes in herd composition between 2016 and 2020. Results showed a change in herd composition, with fewer males and more cows/heifers, suggesting a shift toward specializing in milk production, which, with the appropriate environmental incentives and safeguards, would unlikely broaden deforestation. However, interlinkages between the dairy and beef value chains suggest that extra male cattle from SPS intensification would be moved for fattening as a source of beef to new pastures at the forest border. If SPS scaling interventions in the Colombian Amazon are to be truly deforestation-free, they need to be designed based on a clear understanding of the interlinkages between food and land systems. Therefore, policies advancing the livestock and land-use agenda must create mechanisms that support deforestation-free livestock intensification, based on biophysical and socioeconomic evaluations.
18.	Sacre, Edmond (författare) The relative conservation impact of strategies that prioritize biodiversity representation, threats, and protection costs 2020 Ingår i: Conservation science and practice. - : Wiley. - 2578-4854. ; 2 Tidskriftsartikel (refereegranskat)abstract Despite exponential increases in the coverage of protected areas (PAs) over recent decades, global biodiversity continues to decline. One explanation for this lack of success is that the efficacy of conservation prioritization strategies is rarely measured in terms of conservation "impact," which requires comparing proposed PA networks to a counterfactual scenario in which no intervention is applied. This approach contrasts with measuring efficacy using surrogates for conservation impact, such as the extent, total biodiversity value, or representativeness of a proposed PA network. However, implementing an experimental counterfactual scenario is difficult because of time, funding, and ethical constraints. Here, we use an alternative and complementary approach: anex-postanalysis with counterfactual outcomes measured using historical empirical data on changes in biodiversity in unprotected landscapes. This approach allows for the comparison of different retrospectively implemented prioritization strategies to a real counterfactual outcome. In our analysis, we predict the impact of several alternative PA prioritization strategies in Queensland, Australia, using high-resolution datasets of vegetation clearing, habitat type, and land acquisition cost. Our results show that achieving conventional conservation targets does not equate to achieving impact, and that alternative, and relatively simple, prioritization strategies can achieve far greater impacts.
19.	Sidemo Holm, William, et al. (författare) Land sharing versus land sparing—What outcomes are compared between which land uses? 2021 Ingår i: Conservation Science and Practice. - : Wiley. - 2578-4854. ; 3:11 Tidskriftsartikel (refereegranskat)abstract Land sharing versus land sparing describes contrasting strategies to conserve biodiversity while maintaining agricultural production. We comprehensively reviewed empirical studies comparing land-sharing and land-sparing strategies to assess how these were conceptualized and how consequences for biodiver- sity, commodity production, and additional ecosystem services have been quantified. Out of 52 studies, a majority conceptualized land sharing as environmental-friendly agriculture or low-yielding agriculture, and land spar- ing as high-yielding agriculture combined with preserved natural habitats. However, the latter also represented land sharing in several studies, resulting in an overlap in how land sharing and land sparing were conceptualized. Stud- ies focuses on a limited number of taxonomic groups, primarily birds, whereas ecosystem services (mainly carbon storage) and economic outcomes were rarely considered. To facilitate comparisons and on-the-ground implementa- tion, we suggest to recognize the multitude of land-use combinations along a continuum from extreme land sharing to extreme land sparing. This includes being explicit about both the spatial scales of preserved habitats and the features in land sharing or intermediate strategies that are assumed to benefit biodiversity and hamper commodity production. We also suggest that taxonomic groups, ecosystem services, and welfare consequences should be analyzed based on conservation needs and impacts on social–ecological systems.
20.	Öckinger, Erik (författare) Seminatural areas act as reservoirs of genetic diversity for crop pollinators and natural enemies across Europe 2024 Ingår i: Conservation science and practice. - 2578-4854. ; 6 Tidskriftsartikel (refereegranskat)abstract Despite increasing recognition of the importance of the multiple dimensions of biodiversity, including functional or genetic diversity as well as species diversity, most conservation studies on ecosystem service-providing insects focus on simple diversity measures such as species richness and abundance. In contrast, relatively little is known about the genetic diversity and resilience of pollinators or natural enemies of crop pests to population fragmentation and local extinction. The genetic diversity and demographic dynamics of remnant populations of beneficial insects in agricultural areas can be a useful indicator proving additional insights into their conservation status, but this is rarely evaluated. Although gene flow between agricultural and seminatural areas is key to maintaining genetic diversity, its extent and directionality remain largely unexplored. Here, we apply a pan-European sampling protocol to quantify genetic diversity and structure and assess gene flow between agricultural and nearby seminatural landscapes in populations of two key ecosystem service-providing insect species, the lady beetle Coccinella septempunctata, an important predator of aphids and other crop pests, and the bee pollinator Andrena flavipes. We show that A. flavipes populations are genetically structured at the European level, whereas populations of C. septempunctata experience widespread gene flow across the continent and lack any defined genetic structure. In both species, we found that there is high genetic connectivity between populations established in croplands and nearby seminatural areas and, as a consequence, they harbor similar levels of genetic diversity. Interestingly, demographic models for some regions support asymmetric gene flow from seminatural areas to nearby agricultural landscapes. Collectively, our study demonstrates how seminatural areas can serve as genetic reservoirs of both pollinators and natural enemies for nearby agricultural landscapes, acting as sources for recurrent recolonization and, potentially, contributing to enhancing ecosystem service and crop production resilience in the longer term.image Our study demonstrates how seminatural areas can serve as genetic reservoirs of both pollinators and natural enemies for nearby agricultural landscapes, acting as sources for recurrent recolonization and, potentially, contributing to enhancing ecosystem service and crop production resilience in the longer term.

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