Island biota is currently threatened by global anthropogenic pressures. The limited ability of island species to track suitable conditions and their inherent sensitivity to anthropogenic changes make insular biota highly vulnerable to global threats. Although vulnerability assessments of species to single threats individually have been conducted, the vulnerability of island faunas to multiple global change drivers has not. We evaluated the relative vulnerability of 266 insular bird and mammal species from 45 islands in six well-studied archipelagos to multiple threats. We first quantified the current exposure of islands to climate change, land-use change, and biological invasions. We then calculated insular assemblage sensitivity based on species' ecological characteristics, such as diet and habitat specialization, generation length, and geographical rarity. To assess the adaptive capacity of insular species in response to these threats, we examined biotic and abiotic features, such as species' dispersal ability, terrain heterogeneity, and proportion of protected area. Exposure and adaptive capacity markers varied greatly among the six archipelagos, but the mean sensitivity of assemblages was similar across islands. Hawai'i, the Azores, and the Mascarenes had high vulnerability scores. Climate change and biological invasions were dominant threats in Hawai'i, and land-use change was the dominant threat in the Mascarenes, Azores, and Canaries. Assemblages from the Galapagos and Tristan da Cunha had lower vulnerability to current threats. The differences in vulnerability among island assemblages, mostly arising from differences in exposure and adaptive capacity, mean these islands' conservation needs differ. Our results delineate the mechanisms behind the vulnerability of insular biota under global change, a necessary step to effectively preserve island biodiversity and its associated human benefits.
Islands are at the forefront of global environmental change. Biological invasions, land-use change, and climate change are driving population declines and causing irreversible losses in island ecosystems. Although global threat exposure maps have been developed in recent years, they are mostly designed for coarse-grained, continental-extent analyses, often overlooking islands. Here, we assessed the cumulative exposure to biological invasion, land-use change, and climate change by 2050, for more than 16,000 islands worldwide using multiple threat markers. Climate change emerged as a ubiquitous threat, being the dominant threat for 65% of all islands, followed by land-use change (22%) and biological invasions (13%). Islands with the highest cumulative exposure were more likely to be isolated, without historical connection with the mainland. Small and low-elevation islands at low latitudes exhibited greater exposure to climate change, whereas larger, high-elevation islands tended to be more exposed to land-use change. Certain countries and subdivisions, such as Seychelles, Bangladesh, China, French Polynesia, and Micronesia, harbored statistically disproportionate numbers of highly exposed islands, highlighting geographic hotspots of cumulative exposure where conservation efforts might be particularly urgent. Our study indicates that by 2050, most islands will be simultaneously exposed to a triple threat arising from the combined impacts of land-use change, climate change, and biological invasions. This study provides robust quantification of island cumulative exposure to three key drivers of biodiversity loss, making a crucial step toward assessing global biodiversity vulnerability.
Small Pacific islands can be important sources and sinks of marine pollution from organic and inorganic waste. However, waste is transported and deposited differently along shorelines according to prevailing weather conditions, which vary seasonally. Wakatobi National Park, a marine national park and tourism destination in Sulawesi, Indonesia, is subject to multiple waste issues. Using the Huntete shoreline, and Kulati Village in the National Park, as a case study, we investigated how monsoon processes influence the type and abundance of marine waste; the volume, composition, and sources of the waste; and how local/village-level waste management could effectively reduce the input of domestic waste into the marine environment. We collected, identified, and quantified shoreline waste along four 25 m transects on the Huntete shoreline. We collected data during three monitoring periods during different monsoon seasons: September 2018 (east monsoon season: EMS); November 2018 (transitional monsoon season: TMS), and January 2019, (west monsoon season: WMS). We found that the EMS resulted in 540 kg of waste, TMS in 693 kg, and WMS in 613 kg. The volume of shoreline organic waste (95-99%) was higher than the inorganic waste. The inorganic waste was dominated by plastics, particularly polystyrene (PS) and Polyethylene Terephthalate (PET) in weight. This site, and others like it, will continue to face waste issues if effective small island waste management is not in place. Our findings and recommendations can inform and guide policy making at a village level, as well as the development of small island waste management strategies more broadly.
The critical role of women in natural resource management is becoming increasingly recognized globally. In many Pacific communities, women are highly dependent on natural resources to feed and support their families, and their lives are closely entwined with the quality and quantity of these resources. However, in traditional patriarchal systems, women face multiple challenges related to traditional gender dynamics, including unequal access to natural resources, and lack of decision-making power. Sasi, a customary practice to manage the continuous supply of forest or marine resources by applying temporary harvest closures, has been practiced for more than 400 years in the eastern part of Indonesia, historically by men. In a world-first initiative, a women’s group in West Papua, Waifuna, undertook management of a sasi in 2008, with their rights fully acknowledged by the subvillage government, church, and customary holders. Here, we describe and discuss the group’s management of sea cucumbers and lobsters. We found that, despite the challenges they faced, through sasi management women increased their capacity to participate in conservation activities and decision-making, as well as contribute to marine conservation efforts. In addition, the whole community benefitted from changing perspectives on women’s abilities to manage natural resources because of the deconstruction of the prohibitive social norms that restricted women’s participation in the past.
Effective environmental policies for the tropics depend on accurate, representative scientific data. However, there is strong evidence from particular disciplines and regions that existing research is patchily distributed. Here, we show that poor representation of sampling and citation in some biomes and across key environmental gradients from all disciplines for the entire tropics may lead to flawed scientific paradigms and inappropriate policy prescriptions. We map sampling locations and citations from 2 738 published studies in natural terrestrial tropical environments across all disciplines to identify gaps in field sampling effort and research attention. Five ecoregions - all in moist broadleaf forests - generate 22% of the total citations but cover only 3% of the tropical land area. By contrast, drier biomes with low tree cover account collectively for 57% of the tropical area but generate only 20% of total citations. Locations that are drier, colder, with greater plant species richness, lower tree cover and facing greater climate change extremes are under-sampled and under-cited. Our results will help to correct these imbalances to improve the scientific basis for environmental policies across the tropics.
The majority of vulnerability assessments of biodiversity to global changes have so far been applied to, and designed for, mainland systems, overlooking islands. However, islands harbour unique biodiversity and are epicentres of ongoing extinctions. We thus introduce a specific framework for quantifying the vulnerability of terrestrial insular biota to multiple threats. This framework uses markers of exposure, sensitivity, and adaptive capacity to account for the unique characteristics of island biodiversity. Our assessment framework involves five steps: (1) defining the scope of the vulnerability assessment, (2) selecting the most appropriate markers, (3) computing the vulnerability metric, (4) evaluating uncertainties, and (5) providing recommendations for conservation. The development of this vulnerability framework tailored for island systems is part of a larger initiative to meet international policy targets that better integrate biodiversity threats and dimensions. We thus discuss the need and urgency for applying this framework to guide evidence-based decisions for the conservation of insular biodiversity, and for increased attention to insular biota at the science-policy interface.
Diagnosing chronic myeloid leukaemia (CML) during pregnancy is rare. Tyrosine kinase inhibitors (TKIs) have traditionally been contraindicated owing to their teratogenicity. Management decisions should consider the risks to mother and foetus of uncontrolled disease and teratogenic medications. Further cases are required to build upon the paucity of current literature. We report 22 cases of CML diagnosed during pregnancy from 2002 to date. Twenty-one pregnancies resulted in healthy babies and one patient miscarried. Some patients remained untreated throughout pregnancy but the majority received one or both of interferon-α and leucapheresis. One patient was started on imatinib at Week 26, and one on hydroxycarbamide in the third trimester. We report haematological parameters during pregnancy to provide clinicians with realistic expectations of management. There were no fetal abnormalities related to treatment during pregnancy. Seventeen patients achieved at least major molecular response on first-line TKI. A diagnosis of CML during pregnancy can be managed without significant consequences for mother or child. Leucapheresis and interferon-α are generally safe throughout pregnancy. Despite having been avoided previously, there is growing evidence that certain TKIs may be used in particular circumstances during the later stages of pregnancy. Future work should aim to further elucidate this safety profile.
Anthropogenic pressures threaten biodiversity, necessitating conservation actions founded on robust ecological models. However, prevailing models inadequately capture the spatiotemporal variation in environmental pressures faced by species with high mobility or complex life histories, as data are often aggregated across species’ life histories or spatial distributions. We highlight the limitations of static models for dynamic species and incorporate life history variation and spatial distributions for species and stressors into a trait-based vulnerability and impact model. We use green sea turtles in the Greater Caribbean Region to demonstrate how vulnerability and anthropogenic impact for a dynamic species change across four life stages. By incorporating life stages into a trait-based vulnerability model, we observed life stage-specific vulnerabilities that were otherwise unnoticed when using an aggregated trait value set. Early life stages were more vulnerable to some stressors, such as inorganic pollution or marine heat waves, and less vulnerable to others, such as bycatch. Incorporating spatial distributions of stressors and life stages revealed impacts differ for each life stage across spatial areas, emphasizing the importance of stage-specific conservation measures. Our approach showcases the importance of incorporating dynamic processes into ecological models and will enable better and more targeted conservation actions for species with complex life histories and high mobility.
Anthropogenic stressors to marine ecosystems from climate change and human activities increase extinction risk of species, disrupt ecosystem integrity, and threaten important ecosystem services. Addressing these stressors requires understanding where and to what extent they are impacting marine biological and functional diversity. We model cumulative risk of human impact upon 21,159 marine animal species by combining information on species-level vulnerability and spatial exposure to a range of anthropogenic stressors. We apply this species-level assessment of human impacts to examine patterns of species-stressor interactions within taxonomic groups. We then spatially map impacts across the global ocean, identifying locations where climate-driven impacts overlap with fishing, shipping, and land-based stressors to help inform conservation needs and opportunities. Comparing species-level modeled impacts to those based on marine habitats that represent important marine ecosystems, we find that even relatively untouched habitats may still be home to species at elevated risk, and that many species-rich coastal regions may be at greater risk than indicated from habitat-based methods alone. Finally, we incorporate a trait-based metric of functional diversity to identify where impacts to functionally unique species might pose greater risk to community structure and ecosystem integrity. These complementary lenses of species, function, and habitat provide a richer understanding of threats to marine biodiversity to help inform efforts to meet conservation targets and ensure sustainability of nature’s contributions to people.
The global decline in the extent and condition of ecological communities has resulted in an increasing demand for recovery and conservation plans. Conservation plans for ecological communities require a management framework with measurable, time-bound objectives, a targeted management strategy, and indicators that enable actions to be evaluated in relation to objectives. Methods that allow for the transfer of knowledge among similar systems and facilitate consistent and comparable plans are essential, especially when resources are constrained. We describe a process to streamline the development of conservation plans by combining functionally similar community sub-types into a multi-community State and Transition Model. We demonstrate this approach in a case study where we use the combined expertise of Australian ecologists to build a multi-community State and Transition Model for eucalypt woodlands of southern Australia – an ecosystem which occupies a vast geographical range across temperate Australia and includes many distinct vegetation communities, a growing number of which are endangered or threatened. We identify commonalities and differences among three broad woodland sub-types including a set of eight general condition states, a list of drivers of transitions among condition states, and the uncertainties and time-frames associated with each transition. Two key findings across all models are that management is state-dependent, and transition directly to the ‘Exemplar’ state from any other state is considered highly unlikely. Other examples of State and Transition Models in the literature are focused on single communities or a significantly smaller scale, and this is the first attempt to construct a nationally relevant multi-community State and Transition Model via a structured and consultative process. Based on this case study, we propose a repeatable protocol for developing multi-community State and Transition Models. This process could improve and streamline the development of robust conservation plans for threatened ecological communities more broadly.
AbstractEnvironmental losses are increasingly evoking ‘‘ecological grief’’ among environmental and conservation professionals. Ecological grief is a natural but difficult psychological experience, and a risk to well‐being. Despite this, there are currently few resources available to support environmental professionals and their organizations to reduce the risks to well‐being and cope effectively with ecological grief. As a result, environmental professionals who experience this risk in the workplace are unlikely to be equipped with the knowledge, skills, or context to support themselves, colleagues, or peers, in experiences of ecological grief. In this paper, we provide information, guidance, and examples of workplace support for ecological grief. Drawing on insights from the field of grief and bereavement, we identify peer support and organizational responses as key supportive factors for those experiencing ecological grief. We also present a new concept, ‘‘ecological grief literacy,’’ to guide effective peer and organizational support. While peers have the potential to provide interpersonal support and connection for ecological grieving, it is essential that the organizations that employ environmental professionals enact policies and practices that provide structures, resources, and contexts to enable environmental professionals to effectively support ourselves and each other.
Global warming and biodiversity loss continue to increase, and the environment is being degraded faster than at any time in history. At the same time, it will take generations, if ever, to reach gender parity. These issues are all connected. Women and girls, particularly in low-income countries, are disproportionately harmed, yet remain underrepresented or entirely absent from the spaces that shape the global climate and biodiversity agenda. We argue that this is a failure of leadership and science and delivers serious injustice and harm to women and the environment. In this paper we explore the case of gender inequity within market-based responses to these crises, including carbon-offsetting and biodiversity conservation. We present evidence that reveals how market-based solutions primarily benefit men, especially rich and powerful men in high income countries, whilst ignoring and minimising rights, interests, and lives of women, primarily those in low-income countries. We highlight that to have any chance of being equitable, market-based climate and biodiversity solutions must also consider gender at their core. It must be intentional. We make recommendations to address gender-based injustice through both reform and radical change.
The social dimensions of human–wildlife conflicts are becoming increasingly important. In regions where crop‐raiding is a common issue, local people's attitudes toward wildlife is an important indicator of how successful conservation efforts are likely to be. One such area is the east Tibetan Plateau—a biodiversity hotspot with well‐preserved forest ecosystems and mountain villages where subsistence farming is practiced. In this context, we conducted a survey of people's tolerance toward wildlife in five Tibetan villages that experience conflicts arising from crop‐raiding incidents. We interviewed 83 respondents, 76 of whom were participants in a compensation scheme that provided payments for crop damage. Wildlife tolerance was generally high, mostly due to mutualistic wildlife values, whereby people believed they should coexist with animals equally instead of exploiting them as natural resources. Tolerance was influenced by people's wildlife preference rather than the level of damage to croplands: people were likely to show higher tolerance toward culturally important species even when they were crop‐raiding animals. While economic and mitigation efforts as part of traditional conservation management led to increased tolerance, the compensation scheme and fencing were less important than wildlife preference. We suggest that conservation management for human‐wildlife conflicts should develop region and stakeholder‐specific engagement strategies. Crucially, such strategies should incorporate cultural considerations to fully address the complex human dimensions inherent in these issues.
The planet is facing climate and biodiversity loss crises that impact all of humanity and yet globally, women remain underrepresented in leading solutions to these urgent conservation challenges. As one of the world’s largest conservation non-profit organizations, The Nature Conservancy (TNC) provided a large case-study for understanding inequity for women in the conservation sector. In 2018, all 1,789 conservation and science staff at TNC were surveyed to understand how they are able to develop their careers and contribute to conservation research and decision making. Of the 904 responses (490 men and 414 women), results show that men influence conservation and science decisions more than women; women face multiple barriers across their conservation careers due to gender bias; women experience sexual harassment and discrimination, as well as fear retaliation more than men; and men reported the sector as a more equitable and favorable place for women than women themselves experienced. Our data demonstrates that gender equality (equal representation of men and women) does not automatically mean that women no longer face systemic inequity and that intersectional issues such as race, location and caring responsibilities can all make it even more difficult for women to excel. Respondents drew from experiences across their conservation careers, to suggest how the conservation sector could address these issues. Based on our findings, we recommend practical ways the conservation sector can improve gender equity, including via workplace and cultural change measures, as well as changes to recruitment, pay transparency, and career development policies.
Societal Impact Statement Plants are fundamental to terrestrial and aquatic ecosystems and are key to human livelihoods. To protect plant diversity, systematic approaches to conservation assessment are needed. Many nations have legislation or other policy instruments that seek to protect biodiversity (including plants), and species‐level assessments are essential for identifying the most threatened species that require special and immediate protection measures. Some plants occur in only one place (for instance, a single country) and here we have estimated how many of these ‘endemic’ species have had their threats assessed in each country or close country‐equivalent worldwide. We show that the level of assessment completion is only weakly related to the income of countries or the likely level of threat that species face. Summary The Global Strategy for Plant Conservation ambitiously called for an assessment of the conservation status of all recognised plant taxa by 2020. This target was not met in the short term. Nevertheless, the need for conservation assessments remains urgent as plants go extinct and face increasing threats from human impacts on the biosphere. Here, the completeness of threat assessments for endemic flora in 179 countries or their close equivalents was assessed. To do so, distribution information from the World Checklist of Vascular Plants was combined with assessments collated in the ThreatSearch database. The completeness of assessments was expected to be associated with the objective affluence of countries (measured using inequality‐adjusted Human Development Index (IHDI)) and/or the exposure of their plant species to threats associated with human impacts (measured using Global Human Modification index (GHM)). The number of endemic species per country was also hypothesised to influence the completion of assessments. Overall, 58% of all country‐based endemic species examined have no conservation assessment (127,643 species). Countries' progress toward the completion of threat assessments for endemic plants could not be confidently predicted by IHDI, GHM or the richness of endemic plant flora. The shortfall in threat assessments identified here restricts national regulation of actions which imperil plant species, with particular consequences for endemic plant species subject to local laws. Some nations with high IHDI scores (i.e. wealthier nations) are not systematically assessing extinction risk in their endemic species. Scarce funding should be directed to global hotspots of endemism with few available resources for assessment.
Healthy marine ecosystems provide critical benefits to people worldwide, but increasing threats from climate change and human activities disrupt ecosystem functionality and put these benefits at risk. Local and regional assessments have shown these impacts can be substantial, but we lack a global assessment of risk to marine biodiversity. Here we assessed risk of impact by intersecting spatial distributions of 21,267 marine animal species with distributions of 13 anthropogenic stressors according to each species’ vulnerability, examining results through multiple lenses that connect to different conservation objectives: species, taxon, and functional vulnerability. Using this species-focused approach, we found that vulnerable functional entities in coastal ecosystems across all marine ecological provinces are at greater risk of impact than indicated by assessments of broader ecosystem-level impact risk based on vulnerability of representative habitats, driven largely by climate stressors. Where multiple lenses of impact assessment indicate elevated risk, broad area-based protections may be warranted, but where impacts are focused on vulnerable functional entities there may be opportunities for more narrowly targeted conservation strategies such as local habitat restoration, assisted migration, or fishing gear restrictions. These results provide key insights at local to global scales on where and how to best meet conservation of species diversity and ecosystem function.
AimMining is increasingly pressuring areas of critical importance for biodiversity conservation, such as the Brazilian Amazon. Biodiversity data are limited in the tropics, restricting the scope for risks to be appropriately estimated before mineral licensing decisions are made. As the distributions and range sizes of other taxa differ markedly from those of vertebrates-the common proxy for analysis of risk to biodiversity from mining-whether mining threatens lesser-studied taxonomic groups differentially at a regional scale is unclear.LocationBrazilian Amazon.MethodsWe assess risks to several facets of biodiversity from industrial mining by comparing mining areas (within 70 km of an active mining lease) and areas unaffected by mining, employing species richness, species endemism, phylogenetic diversity and phylogenetic endemism metrics calculated for angiosperms, arthropods and vertebrates.ResultsMining areas contained higher densities of species occurrence records than the unaffected landscape, and we accounted for this sampling bias in our analyses. None of the four biodiversity metrics differed between mining and nonmining areas for vertebrates. For arthropods, species endemism was greater in mined areas. Mined areas also had greater angiosperm species richness, phylogenetic diversity and phylogenetic endemism, although less species endemism than unmined areas.Main ConclusionsUnlike for vertebrates, facets of angiosperm and arthropod diversity are relatively higher in areas of mining activity, underscoring the need to consider multiple taxonomic groups and biodiversity facets when assessing risk and evaluating management options for mining threats. Particularly concerning is the proximity of mining to areas supporting deep evolutionary history, which may be impossible to recover or replace. As pressures to expand mining in the Amazon grow, impact assessments with broader taxonomic reach and metric focus will be vital to conserving biodiversity in mining regions.
Land clearing and protected area provision are two contrasting forces shaping the persistence of species in the landscape. Using Australia's flora as a case study, we characterize the three possible states of species persistence: protected, cleared, or at risk of future loss based on agricultural capability, using a comprehensive suite of plant distributions and traits. We test the assumption that plant species, assemblages, and growth forms are adequately preserved in protected areas in Australia, and contrast this result with historic and future loss driven by trajectories of continued land clearing. We find levels of protection and clearing are inversely related, with both bioregions and species with high levels of clearing having low protection. We find only one third of Australian bioregions meet international protection targets of 30 % of area in formal protection. Similarly, we find that 29 % of plant species have met representation protection targets (with 30 % of their range protected), while similar numbers (33 %) have clearing as the dominant land use across their ranges. Protection and clearing have also unevenly affected species with different growth forms, range sizes, and distributions across agricultural land capability. Narrow-ranged woody species (e.g., trees) are the most at-risk group in relation to clearing, whereas large-ranged non-woody species (e.g., graminoids, herbs) are afforded a high level of protection in reserved lands. We demonstrate that the Australian protected-area network, although theoretically underpinned by sound CAR principles (comprehensive, adequacy, representativeness), falls short in protecting both individual plant species and growth forms.
The growth and survival of individual trees determine the physical structure of a forest with important consequences for forest function. However, given the diversity of tree species and forest biomes, quantifying the multitude of demographic strategies within and across forests and the way that they translate into forest structure and function remains a significant challenge. Here, we quantify the demographic rates of 1961 tree species from temperate and tropical forests and evaluate how demographic diversity (DD) and demographic composition (DC) differ across forests, and how these differences in demography relate to species richness, aboveground biomass (AGB), and carbon residence time. We find wide variation in DD and DC across forest plots, patterns that are not explained by species richness or climate variables alone. There is no evidence that DD has an effect on either AGB or carbon residence time. Rather, the DC of forests, specifically the relative abundance of large statured species, predicted both biomass and carbon residence time. Our results demonstrate the distinct DCs of globally distributed forests, reflecting biogeography, recent history, and current plot conditions. Linking the DC of forests to resilience or vulnerability to climate change, will improve the precision and accuracy of predictions of future forest composition, structure, and function.
Rapid coastal development continues to jeopardize the integrity of marine socio-ecological systems. China is now the largest bilateral creditor of overseas development finance, and there are growing concerns over the impacts of this boom in Chinese development finance on marine systems. Here, we quantify the risks of coastal development projects financed by China to marine biodiversity and coastal Indigenous communities. Ports present the greatest impact risks to marine systems, with power plants, roads, and other facilities presenting relatively high localized risks. Risks are most prominent in Africa and the Caribbean, with coastal Indigenous communities in Western Africa at greatest risk from development. All projects present some risk to threatened marine species and potential critical habitats, but few present high risks to nearby protected areas. Mitigating these risks will require more social and environmental safeguards, higher standards for host country impact assessments, and greater integration of land-sea risk mitigation and management approaches.