What factors render a species more vulnerable to extinction? In reptiles, foraging mode is a fundamental ecological dimension: some species actively search for immobile prey, whereas others ambush mobile prey. Foraging mode is linked to diet, morphology, movement ecology, and reproductive output, and hence plausibly might affect vulnerability to threatening processes. Our analyses of data on 1543 taxa revealed links between foraging mode and (IUCN) conservation status, but in opposite directions in the two main squamate groups. Ambush-foraging snakes were more threatened and with declining populations than were active searchers, whereas lizards showed the reverse pattern. This divergence may be linked to differing consequences of foraging mode for feeding rates and reproductive frequency in snakes versus lizards. Our findings underscore the need for taxon-specific conservation management, particularly in groups such as reptiles that have been neglected in global conservation prioritization.
{"title":"Foraging mode affects extinction risk of snakes and lizards, but in different ways","authors":"Simon Baeckens, Shai Meiri, Richard Shine","doi":"10.1111/conl.12977","DOIUrl":"https://doi.org/10.1111/conl.12977","url":null,"abstract":"<p>What factors render a species more vulnerable to extinction? In reptiles, foraging mode is a fundamental ecological dimension: some species actively search for immobile prey, whereas others ambush mobile prey. Foraging mode is linked to diet, morphology, movement ecology, and reproductive output, and hence plausibly might affect vulnerability to threatening processes. Our analyses of data on 1543 taxa revealed links between foraging mode and (IUCN) conservation status, but in opposite directions in the two main squamate groups. Ambush-foraging snakes were more threatened and with declining populations than were active searchers, whereas lizards showed the reverse pattern. This divergence may be linked to differing consequences of foraging mode for feeding rates and reproductive frequency in snakes versus lizards. Our findings underscore the need for taxon-specific conservation management, particularly in groups such as reptiles that have been neglected in global conservation prioritization.</p>","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/conl.12977","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41230025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In July 2022, the International Union for Conservation of Nature listed the iconic North American monarch butterflies (Danaus plexippus) as Endangered because of population declines of 91% since 1996. Yet, in the United States, there are no national laws protecting monarchs. In 2020, the US Fish and Wildlife Service determined that monarchs are “warranted” for US Endangered Species listing, although this listing was “precluded” because of lack of agency resources. In the absence of federal laws, individual US state—sub‐national—wildlife agencies play an essential role in monarch conservation. State wildlife agencies document decadal plans for at‐risk species conservation via State Wildlife Action Plans (SWAPs). We analyzed all 2015–2025 SWAPs to assess and compare state‐level monarch conservation efforts. We found monarch representation in SWAPs varied widely and lacked geographic alignment with actual conservation needs and interstate coordination. For example, in the contiguous United States, 15 states that occupy critical monarch migration corridors omit listing monarchs as a species of conservation need; 10 of these states have critical breeding habitat. This limited attention in critical areas of monarch flyways is troubling. States can improve upcoming 2025–2035 plans by coordinating efforts to conserve monarch habitat across the entire migration corridor.
{"title":"Who cares about monarch butterflies? Comparing US State Wildlife Action Plans 2015–2025","authors":"K. Harris, Damon M. Hall, D. Finke","doi":"10.1111/conl.12976","DOIUrl":"https://doi.org/10.1111/conl.12976","url":null,"abstract":"In July 2022, the International Union for Conservation of Nature listed the iconic North American monarch butterflies (Danaus plexippus) as Endangered because of population declines of 91% since 1996. Yet, in the United States, there are no national laws protecting monarchs. In 2020, the US Fish and Wildlife Service determined that monarchs are “warranted” for US Endangered Species listing, although this listing was “precluded” because of lack of agency resources. In the absence of federal laws, individual US state—sub‐national—wildlife agencies play an essential role in monarch conservation. State wildlife agencies document decadal plans for at‐risk species conservation via State Wildlife Action Plans (SWAPs). We analyzed all 2015–2025 SWAPs to assess and compare state‐level monarch conservation efforts. We found monarch representation in SWAPs varied widely and lacked geographic alignment with actual conservation needs and interstate coordination. For example, in the contiguous United States, 15 states that occupy critical monarch migration corridors omit listing monarchs as a species of conservation need; 10 of these states have critical breeding habitat. This limited attention in critical areas of monarch flyways is troubling. States can improve upcoming 2025–2035 plans by coordinating efforts to conserve monarch habitat across the entire migration corridor.","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44524711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jayden E. Engert, Robert L. Pressey, Vanessa M. Adams
Australia is a global leader in land clearing and biodiversity loss. The overwhelming majority of land clearing within Australia and, globally, is driven by agricultural conversion. The importance of agricultural lands also leads to the concentration of habitat protection in landscapes that do not support productive land uses, which might contribute to species conservation in marginal habitat. Using an integrated agricultural capability map and threatened vertebrate fauna range maps, we show that observed biases in protected area location have varied impacts at the species level. Specifically, threatened vertebrate fauna with habitat capable of supporting high-value productive lands received less protection and experienced greater habitat loss. Similarly, almost all species assessed received protection in the portions of their ranges less conducive to productive land uses. Finally, we identify regions of Australia at risk of future land clearing and the species likely to bear the brunt of the impacts. Our results demonstrate the importance of protecting land capable of supporting productive uses to conserve the most affected threatened species.
{"title":"Threatened fauna protections compromised by agricultural interests in Australia","authors":"Jayden E. Engert, Robert L. Pressey, Vanessa M. Adams","doi":"10.1111/conl.12975","DOIUrl":"https://doi.org/10.1111/conl.12975","url":null,"abstract":"<p>Australia is a global leader in land clearing and biodiversity loss. The overwhelming majority of land clearing within Australia and, globally, is driven by agricultural conversion. The importance of agricultural lands also leads to the concentration of habitat protection in landscapes that do not support productive land uses, which might contribute to species conservation in marginal habitat. Using an integrated agricultural capability map and threatened vertebrate fauna range maps, we show that observed biases in protected area location have varied impacts at the species level. Specifically, threatened vertebrate fauna with habitat capable of supporting high-value productive lands received less protection and experienced greater habitat loss. Similarly, almost all species assessed received protection in the portions of their ranges less conducive to productive land uses. Finally, we identify regions of Australia at risk of future land clearing and the species likely to bear the brunt of the impacts. Our results demonstrate the importance of protecting land capable of supporting productive uses to conserve the most affected threatened species.</p>","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/conl.12975","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41230074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Projects designed to incentivize ecosystem management for societal benefits are becoming increasingly popular and are often touted as win–win solutions for social and environmental challenges. Yet, there are important concerns about the equity and justice implications of these programs, and there is strong evidence that a lack of attention to justice can exacerbate or create inequities. We focus on water funds, a subset of watershed ecosystem investment programs that are being scaled globally. We specifically discuss how three long‐standing Andean programs have shifted through time toward a greater focus on equity and justice. We argue that these shifts, while imperfect, have been critical to their durability and that, more generally, continued alignment of nature‐based investment programs with broader equity and justice concerns is essential for long‐term durability and success.
{"title":"Toward more equitable ecosystem investment programs—Adaptation and equity are central to the design and functioning of successful water funds","authors":"L. Bremer, K. Brauman, M. Echavarría","doi":"10.1111/conl.12974","DOIUrl":"https://doi.org/10.1111/conl.12974","url":null,"abstract":"Projects designed to incentivize ecosystem management for societal benefits are becoming increasingly popular and are often touted as win–win solutions for social and environmental challenges. Yet, there are important concerns about the equity and justice implications of these programs, and there is strong evidence that a lack of attention to justice can exacerbate or create inequities. We focus on water funds, a subset of watershed ecosystem investment programs that are being scaled globally. We specifically discuss how three long‐standing Andean programs have shifted through time toward a greater focus on equity and justice. We argue that these shifts, while imperfect, have been critical to their durability and that, more generally, continued alignment of nature‐based investment programs with broader equity and justice concerns is essential for long‐term durability and success.","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48141553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eleanor Warren-Thomas, Antje Ahrends, Yunxia Wang, Maria M. H. Wang, Julia P. G. Jones
Agricultural commodity production is a major driver of tropical deforestation and biodiversity loss. Natural rubber from Hevea brasiliensis, a valuable commodity without viable substitutes, has recently been included in the European Union (EU) deforestation regulation that aims to halt imports of goods containing embedded deforestation. Sustained growth in demand for rubber is driven by increasing tire production, caused by rising transport flows and personal car ownership. We show that average natural rubber yields remain static, meaning 2.7–5.3 million ha of additional plantations could be needed by 2030 to meet demand. A systematic literature search identified 106 case studies concerning transitions to and from rubber, revealing that substantial rubber plantation area expansion since 2010 has occurred at the expense of natural forest. Eliminating deforestation from rubber supply chains requires support for millions of smallholder growers to maintain or increase production from existing plantations, without land or water degradation. Supply chain traceability efforts offer opportunities to deliver such support. While the inclusion of rubber in EU legislation is a positive step, it is critical to ensure that smallholders are not marginalized to avoid exacerbating poverty, and that other markets follow suit to avoid displacement of rubber-driven deforestation to unregulated markets.
{"title":"Rubber's inclusion in zero-deforestation legislation is necessary but not sufficient to reduce impacts on biodiversity","authors":"Eleanor Warren-Thomas, Antje Ahrends, Yunxia Wang, Maria M. H. Wang, Julia P. G. Jones","doi":"10.1111/conl.12967","DOIUrl":"https://doi.org/10.1111/conl.12967","url":null,"abstract":"<p>Agricultural commodity production is a major driver of tropical deforestation and biodiversity loss. Natural rubber from <i>Hevea brasiliensis</i>, a valuable commodity without viable substitutes, has recently been included in the European Union (EU) deforestation regulation that aims to halt imports of goods containing embedded deforestation. Sustained growth in demand for rubber is driven by increasing tire production, caused by rising transport flows and personal car ownership. We show that average natural rubber yields remain static, meaning 2.7–5.3 million ha of additional plantations could be needed by 2030 to meet demand. A systematic literature search identified 106 case studies concerning transitions to and from rubber, revealing that substantial rubber plantation area expansion since 2010 has occurred at the expense of natural forest. Eliminating deforestation from rubber supply chains requires support for millions of smallholder growers to maintain or increase production from existing plantations, without land or water degradation. Supply chain traceability efforts offer opportunities to deliver such support. While the inclusion of rubber in EU legislation is a positive step, it is critical to ensure that smallholders are not marginalized to avoid exacerbating poverty, and that other markets follow suit to avoid displacement of rubber-driven deforestation to unregulated markets.</p>","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/conl.12967","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41229820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cori Lopazanski, Bergen Foshay, Jessica L. Couture, Daniel Wagner, Lee Hannah, Emily Pidgeon, Darcy Bradley
Climate change is threatening marine systems, and its widespread and dynamic effects are creating challenges for designing and managing marine protected areas (MPAs). The majority of recommendations for climate-resilient MPAs focus on enhancing ecological resilience to disturbance and updating management strategies to respond as changes occur. Here, we assess how existing recommendations for climate resilience are applied in real-world MPA management, using criteria from five key management components: objectives, assessments, design, monitoring, and management. Our review evaluates 172 management plans for 555 MPAs across 52 countries and written in nine languages. We find that MPA management plans contain many underlying scientific and management principles for promoting resilience to climate change, even when “climate change” or related terms are not specifically included: plans include long-term objectives (93.6%), threat-reduction strategies (99.4%), monitoring programs (97.7%), and adaptive management (93%). However, there is substantial variation in the degree to which plans explicitly incorporate climate change into their strategies, from not mentioning it at all (21.5%) to developing detailed climate change-specific action plans (20.9%), with most somewhere in between. In addition to identifying common gaps across management plans, we also provide practical examples of activities MPA managers are undertaking to address climate change.
{"title":"Principles for climate resilience are prevalent in marine protected area management plans","authors":"Cori Lopazanski, Bergen Foshay, Jessica L. Couture, Daniel Wagner, Lee Hannah, Emily Pidgeon, Darcy Bradley","doi":"10.1111/conl.12972","DOIUrl":"https://doi.org/10.1111/conl.12972","url":null,"abstract":"<p>Climate change is threatening marine systems, and its widespread and dynamic effects are creating challenges for designing and managing marine protected areas (MPAs). The majority of recommendations for climate-resilient MPAs focus on enhancing ecological resilience to disturbance and updating management strategies to respond as changes occur. Here, we assess how existing recommendations for climate resilience are applied in real-world MPA management, using criteria from five key management components: objectives, assessments, design, monitoring, and management. Our review evaluates 172 management plans for 555 MPAs across 52 countries and written in nine languages. We find that MPA management plans contain many underlying scientific and management principles for promoting resilience to climate change, even when “climate change” or related terms are not specifically included: plans include long-term objectives (93.6%), threat-reduction strategies (99.4%), monitoring programs (97.7%), and adaptive management (93%). However, there is substantial variation in the degree to which plans explicitly incorporate climate change into their strategies, from not mentioning it at all (21.5%) to developing detailed climate change-specific action plans (20.9%), with most somewhere in between. In addition to identifying common gaps across management plans, we also provide practical examples of activities MPA managers are undertaking to address climate change.</p>","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/conl.12972","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41230061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andhika P. Prasetyo, Joanna M. Murray, Muh. Firdaus A. K. Kurniawan, Naiara G. Sales, Allan D. McDevitt, Stefano Mariani
Illegal fishing, unregulated bycatch, and market demand for certain products (e.g., fins) are largely responsible for the rapid global decline of shark and ray populations. Controlling trade of endangered species remains difficult due to product variety, taxonomic ambiguity, and trade complexity. The genetic tools traditionally used to identify traded species typically target individual tissue samples, and are time-consuming and/or species-specific. Here, we performed high-throughput sequencing of trace DNA fragments retrieved from dust and scraps left behind by trade activities. We metabarcoded “shark-dust” samples from seven processing plants in the world's biggest shark landing site (Java, Indonesia), and identified 61 shark and ray taxa (representing half of all chondrichthyan orders), more than half of which could not be recovered from tissue samples collected in parallel from the same sites. Importantly, over 80% of shark-dust sequences were found to belong to CITES-listed species. We argue that this approach is likely to become a powerful and cost-effective monitoring tool wherever wildlife is traded.
{"title":"Shark-dust: Application of high-throughput DNA sequencing of processing residues for trade monitoring of threatened sharks and rays","authors":"Andhika P. Prasetyo, Joanna M. Murray, Muh. Firdaus A. K. Kurniawan, Naiara G. Sales, Allan D. McDevitt, Stefano Mariani","doi":"10.1111/conl.12971","DOIUrl":"https://doi.org/10.1111/conl.12971","url":null,"abstract":"<p>Illegal fishing, unregulated bycatch, and market demand for certain products (e.g., fins) are largely responsible for the rapid global decline of shark and ray populations. Controlling trade of endangered species remains difficult due to product variety, taxonomic ambiguity, and trade complexity. The genetic tools traditionally used to identify traded species typically target individual tissue samples, and are time-consuming and/or species-specific. Here, we performed high-throughput sequencing of trace DNA fragments retrieved from dust and scraps left behind by trade activities. We metabarcoded “shark-dust” samples from seven processing plants in the world's biggest shark landing site (Java, Indonesia), and identified 61 shark and ray taxa (representing half of all chondrichthyan orders), more than half of which could not be recovered from tissue samples collected in parallel from the same sites. Importantly, over 80% of shark-dust sequences were found to belong to CITES-listed species. We argue that this approach is likely to become a powerful and cost-effective monitoring tool wherever wildlife is traded.</p>","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/conl.12971","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41229680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sue Stolton, Hannah L. Timmins, Nigel Dudley, Olga Biegus, Chris Galliers, William Jackson, Marianne Kettunen, Barney Long, Madhu Rao, Carlos Manuel Rodriguez, Cristina Romanelli, Tim Schneider, Andrew Seidl, Rohit Singh, Matt Sykes
Our planet is facing increasing challenges: climate change, biodiversity loss, pandemics, poverty, and many other problems closely linked to a deteriorating environment. Meanwhile, one of our most important assets, rangers working in protected and conserved areas responsible for managing large tracts of the planet's lands and waters, are often underutilized, underrecognized and underequipped. They are generally left out of the debate about conservation and sustainable development policy, despite being central to the success of those policies. This paper outlines the need for global leaders across multiple sectors to recognize the profession of rangers as essential planetary health workers and to position rangers more effectively within global conservation and environmental policy mechanisms. It introduces the challenges facing rangers, the emerging diversity of roles within the ranger profession and the important contribution of rangers to conservation and sustainable development. It presents policy and implementation avenues to improve recognition and professionalization of rangers as key executors of conservation and development policy, particularly considering the recent Global Biodiversity Framework ambitions.
{"title":"Essential planetary health workers: Positioning rangers within global policy","authors":"Sue Stolton, Hannah L. Timmins, Nigel Dudley, Olga Biegus, Chris Galliers, William Jackson, Marianne Kettunen, Barney Long, Madhu Rao, Carlos Manuel Rodriguez, Cristina Romanelli, Tim Schneider, Andrew Seidl, Rohit Singh, Matt Sykes","doi":"10.1111/conl.12955","DOIUrl":"https://doi.org/10.1111/conl.12955","url":null,"abstract":"<p>Our planet is facing increasing challenges: climate change, biodiversity loss, pandemics, poverty, and many other problems closely linked to a deteriorating environment. Meanwhile, one of our most important assets, rangers working in protected and conserved areas responsible for managing large tracts of the planet's lands and waters, are often underutilized, underrecognized and underequipped. They are generally left out of the debate about conservation and sustainable development policy, despite being central to the success of those policies. This paper outlines the need for global leaders across multiple sectors to recognize the profession of rangers as essential planetary health workers and to position rangers more effectively within global conservation and environmental policy mechanisms. It introduces the challenges facing rangers, the emerging diversity of roles within the ranger profession and the important contribution of rangers to conservation and sustainable development. It presents policy and implementation avenues to improve recognition and professionalization of rangers as key executors of conservation and development policy, particularly considering the recent Global Biodiversity Framework ambitions.</p>","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/conl.12955","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6243938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Blake R. Hossack, David Hall, Catherine L. Crawford, Caren S. Goldberg, Erin Muths, Brent H. Sigafus, Thierry Chambert
Interventions of the host–pathogen dynamics provide strong tests of relationships, yet they are still rarely applied across multiple populations. After American bullfrogs (Rana catesbeiana) invaded a wildlife refuge where federally threatened Chiricahua leopard frogs (R. chiricahuensis) were reintroduced 12 years prior, managers launched a landscape-scale eradication effort to help ensure continued recovery of the native species. We used a before-after-control-impact design and environmental DNA sampling of 19 eradication sites and 18 control sites between fall 2016 and winter 2020–2021 to measure community-level responses to bullfrog eradication, including for two pathogens. Dynamic occupancy models revealed successful eradication from 94% of treatment sites. Native amphibians did not respond to bullfrog eradication, but the pathogens amphibian chytrid fungus (Batrachochytrium dendrobatidis) and ranaviruses were coextirpated with bullfrogs. Our spatially replicated experimental approach provides strong evidence that management of invasive species can simultaneously reduce predation and disease risk for imperiled species.
{"title":"Successful eradication of invasive American bullfrogs leads to coextirpation of emerging pathogens","authors":"Blake R. Hossack, David Hall, Catherine L. Crawford, Caren S. Goldberg, Erin Muths, Brent H. Sigafus, Thierry Chambert","doi":"10.1111/conl.12970","DOIUrl":"https://doi.org/10.1111/conl.12970","url":null,"abstract":"<p>Interventions of the host–pathogen dynamics provide strong tests of relationships, yet they are still rarely applied across multiple populations. After American bullfrogs (<i>Rana catesbeiana</i>) invaded a wildlife refuge where federally threatened Chiricahua leopard frogs (<i>R. chiricahuensis</i>) were reintroduced 12 years prior, managers launched a landscape-scale eradication effort to help ensure continued recovery of the native species. We used a before-after-control-impact design and environmental DNA sampling of 19 eradication sites and 18 control sites between fall 2016 and winter 2020–2021 to measure community-level responses to bullfrog eradication, including for two pathogens. Dynamic occupancy models revealed successful eradication from 94% of treatment sites. Native amphibians did not respond to bullfrog eradication, but the pathogens amphibian chytrid fungus (<i>Batrachochytrium dendrobatidis</i>) and ranaviruses were coextirpated with bullfrogs. Our spatially replicated experimental approach provides strong evidence that management of invasive species can simultaneously reduce predation and disease risk for imperiled species.</p>","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/conl.12970","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41229765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Finance is a precondition for many of the activities that harm ecosystems, but how to address this underlying driver of biodiversity loss remains a topic of debate. This paper reviews the Task Force on Nature-Related Financial Disclosures (TNFD), a corporate-led effort that aims to identify how changes to biodiversity may create financial risks for companies and investors. This approach is also promoted as a strategy for managing the impact of business on biodiversity, with the assumption that risk disclosure will more effectively price biodiversity-harming activities. We assess the potential of the TNFD toward this end, and invite conservation scientists, practitioners, and policymakers to engage critically with its theory of change. We find that the relationship between disclosing biodiversity risk and redirecting finance away from environmental degradation is tenuous and unproven, making this mechanism insufficient for addressing the impact of the financial sector on nature. We question the embrace of another industry-led mechanism that implies that a lack of information is the greatest barrier to stopping biodiversity loss. Further, there are risks that this financial sector approach to biodiversity will reinforce the highly unequal concentration of power and wealth, which is itself inimical to transformative change, as called for by the Intergovernmental Science–Policy Platform on Biodiversity and Ecosystem Services.
{"title":"Risky business: Protecting nature, protecting wealth?","authors":"Audrey Irvine-Broque, Jessica Dempsey","doi":"10.1111/conl.12969","DOIUrl":"https://doi.org/10.1111/conl.12969","url":null,"abstract":"<p>Finance is a precondition for many of the activities that harm ecosystems, but how to address this underlying driver of biodiversity loss remains a topic of debate. This paper reviews the Task Force on Nature-Related Financial Disclosures (TNFD), a corporate-led effort that aims to identify how changes to biodiversity may create financial risks for companies and investors. This approach is also promoted as a strategy for managing the impact of business on biodiversity, with the assumption that risk disclosure will more effectively price biodiversity-harming activities. We assess the potential of the TNFD toward this end, and invite conservation scientists, practitioners, and policymakers to engage critically with its theory of change. We find that the relationship between disclosing biodiversity risk and redirecting finance away from environmental degradation is tenuous and unproven, making this mechanism insufficient for addressing the impact of the financial sector on nature. We question the embrace of another industry-led mechanism that implies that a lack of information is the greatest barrier to stopping biodiversity loss. Further, there are risks that this financial sector approach to biodiversity will reinforce the highly unequal concentration of power and wealth, which is itself inimical to transformative change, as called for by the Intergovernmental Science–Policy Platform on Biodiversity and Ecosystem Services.</p>","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/conl.12969","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6171563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}