Improving climate and biodiversity outcomes through restoration of forest integrity.

Targeting degraded areas in forested landscapes for restoration could deliver rapid climate mitigation and biodiversity conservation, improve resilience of forested lands to future climate change, and potentially reduce the trade-offs between nature recovery and agriculture. Although the importance of forest restoration for climate mitigation is acknowledged, current estimates of its climate mitigation potential may be underestimated because they focus predominantly on reforesting cleared areas. We built on recent analyses of forest integrity and unrealized forest biomass potential to examine the potential for restoring the integrity of degraded forests. There are over 1.5 billion ha of forests worldwide that retain 50-80% of their potential biomass. Prioritizing restoration in these areas could deliver rapid biodiversity and climate mitigation benefits, relative to restoring forest on cleared land. We applied a spatial planning approach to demonstrate how restoration interventions can be targeted to support the conservation of high-integrity forest, a potential pathway to the delivery of the 30×30 goal of the Convention on Biodiversity's Global Biodiversity Framework.

Mejoras en los resultados climáticos y de biodiversidad mediante la restauración de la integridad forestal Resumen El enfoque en las áreas degradadas de los paisajes boscosos para la restauración podría generar una mitigación climática y conservación de la biodiversidad aceleradas, mejorar la resiliencia de los terrenos boscosos ante el cambio climático en el futuro y potencialmente reducir las compensaciones entre la recuperación de la naturaleza y la agricultura. Aunque se reconoce la importancia de la restauración forestal para la mitigación climática, las estimaciones actuales de su potencial de mitigación podrían estar subestimados pues se enfocan principalmente en reforestar áreas despejadas. Partimos de los análisis recientes de la integridad forestal y el potencial sin realizar de la biomasa forestal para analizar el potencial para restaurar la integridad de los bosques degradados. Hay más de 1.5 mil millones de hectáreas de bosque en todo el mundo que retienen el 50-80% de su biomasa potencial. Si se prioriza la restauración en estas áreas, se podrían generar beneficios acelerados de mitigación climática y de la biodiversidad en relación a la reforestación en áreas despejadas. Aplicamos un enfoque de planeación espacial para demostrar cómo las intervenciones de restauración pueden enfocarse para auxiliar en la conservación de bosques de gran integridad, una vía potencial para lograr el objetivo 30×30 del Marco Global para la Biodiversidad del Convenio sobre la Diversidad Biológica.

Contributions of the IUCN Red List of Ecosystems to risk-based design and management of protected and conserved areas in Africa.

Protected and conserved areas (PCAs) are key ecosystem management tools for conserving biodiversity and sustaining ecosystem services and social cobenefits. As countries adopt a 30% target for protection of land and sea under the Global Biodiversity Framework of the United Nations Convention on Biological Diversity, a critical question emerging is, which 30%? A risk-based answer to this question is that the 30% that returns the greatest reductions in risks of species extinction and ecosystem collapse should be protected. The International Union for Conservation of Nature (IUCN) Red List protocols provide practical methods for assessing these risks. All species, including humans, depend on the integrity of ecosystems for their well-being and survival. Africa is strategically important for ecosystem management due to convergence of high ecosystem diversity, intense pressures, and high levels of human dependency on nature. We reviewed the outcomes (e.g., applications of ecosystem red-list assessments to protected-area design, conservation planning, and management) of a symposium at the inaugural African Protected Areas Congress convened to discuss roles of the IUCN Red List of Ecosystems in the design and management of PCAs. Recent progress was made in ecosystem assessment, with 920 ecosystem types assessed against the IUCN Red List criteria across 21 countries. Although these ecosystems spanned a diversity of environments across the continent, the greatest thematic gaps were for freshwater, marine, and subterranean realms, and large geographic gaps existed in North Africa and parts of West and East Africa. Assessment projects were implemented by a diverse community of government agencies, nongovernmental organizations, and researchers. The assessments have influenced policy and management by informing extensions to and management of formal protected area networks supporting decision-making for sustainable development, and informing ecosystem conservation and threat abatement within boundaries of PCAs and in surrounding landscapes and seascapes. We recommend further integration of risk assessments in environmental policy and enhanced investment in ecosystem red-list assessment to fill current gaps.

Contribuciones de la Lista Roja de Ecosistemas de la UICN al diseño y manejo basados en riesgos de las áreas conservadas y protegidas en África Resumen Las áreas protegidas y conservadas (APC) son herramientas clave del manejo de ecosistemas para conservar la biodiversidad y mantener los servicios ambientales y los cobeneficios sociales. Conforme los países adoptan un objetivo de 30% para la protección del suelo y el mar bajo el Marco Mundial de Biodiversidad de la Convención sobre la Diversidad Biológica de las Naciones Unidas, surge una pregunta crítica: ¿cuál 30%? Una respuesta basada en riesgos a esta pregunta es que se debe proteger el 30% que rinda la mayor reducción del riesgo de extinción de especies y del colapso del ecosistema. Los protocolos de la Lista Roja de la Unión Internacional para la Conservación de la Naturaleza (UICN) proporcionan métodos prácticos para evaluar estos riesgos. Todas las especies, incluidos los humanos, dependen de la integridad de los ecosistemas para su bienestar y supervivencia. África tiene una importancia estratégica para el manejo de ecosistemas debido a la convergencia de una gran diversidad de ecosistemas, presiones intensas y un nivel elevado de dependencia del humano hacia la naturaleza. Revisamos los resultados (p. ej.: aplicaciones de las valoraciones de las listas rojas de ecosistemas al diseño de áreas protegidas, planeación de la conservación y manejo) de un simposio en el primer Congreso de Áreas Protegidas Africanas convocado para discutir el papel de la Lista Roja de Ecosistemas de la UICN en el diseño y manejo de las APC. Existen avances recientes en la evaluación de los ecosistemas, con 920 tipos de ecosistemas evaluados bajo los criterios de la Lista Roja de la UICN en 21 países. Mientras estos ecosistemas comprenden una diversidad de ambientes en todo el continente, los principales vacíos temáticos los encontramos para los dominios subterráneos, de agua dulce y marina, además de que existe un gran vacío geográfico en el norte de África y en partes del este y oeste africano. Los proyectos de evaluación fueron implementados por una comunidad diversa de agencias gubernamentales, organizaciones no gubernamentales e investigadores. La influencia de las evaluaciones sobre las políticas y el manejo se da con la información que proveen a las extensiones y el manejo de las redes de áreas protegidas formales, el apoyo para la toma de decisiones de desarrollo sustentable y la guía para la conservación de ecosistemas y el abatimiento de amenazas dentro de los límites de las APC y en los paisajes terrestres y marinos adyacentes. Recomendamos una mayor integración de las evaluaciones de riesgo dentro de las políticas ambientales y más inversión para las evaluaciones de lista roja de los ecosistemas cubrir los vacíos existentes.

The minimum land area requiring conservation attention to safeguard biodiversity.

Ambitious conservation efforts are needed to stop the global biodiversity crisis. In this study, we estimate the minimum land area to secure important biodiversity areas, ecologically intact areas, and optimal locations for representation of species ranges and ecoregions. We discover that at least 64 million square kilometers (44% of terrestrial area) would require conservation attention (ranging from protected areas to land-use policies) to meet this goal. More than 1.8 billion people live on these lands, so responses that promote autonomy, self-determination, equity, and sustainable management for safeguarding biodiversity are essential. Spatially explicit land-use scenarios suggest that 1.3 million square kilometers of this land is at risk of being converted for intensive human land uses by 2030, which requires immediate attention. However, a sevenfold difference exists between the amount of habitat converted in optimistic and pessimistic land-use scenarios, highlighting an opportunity to avert this crisis. Appropriate targets in the Post-2020 Global Biodiversity Framework to encourage conservation of the identified land would contribute substantially to safeguarding biodiversity.

Local conditions and policy design determine whether ecological compensation can achieve No Net Loss goals.

Many nations use ecological compensation policies to address negative impacts of development projects and achieve No Net Loss (NNL) of biodiversity and ecosystem services. Yet, failures are widely reported. We use spatial simulation models to quantify potential net impacts of alternative compensation policies on biodiversity (indicated by native vegetation) and two ecosystem services (carbon storage, sediment retention) across four case studies (in Australia, Brazil, Indonesia, Mozambique). No policy achieves NNL of biodiversity in any case study. Two factors limit their potential success: the land available for compensation (existing vegetation to protect or cleared land to restore), and expected counterfactual biodiversity losses (unregulated vegetation clearing). Compensation also fails to slow regional biodiversity declines because policies regulate only a subset of sectors, and expanding policy scope requires more land than is available for compensation activities. Avoidance of impacts remains essential in achieving NNL goals, particularly once opportunities for compensation are exhausted.

Assessing national human footprint and implications for biodiversity conservation in Iran.

Recent global-scale studies have revealed intense levels of human activities within many protected areas worldwide. However, these analyses rely on coarse global-scale data, making their utility for informing local-scale conservation action limited. We developed a spatially explicit national human footprint index for Iran, a biologically diverse country in west Asia, based on the latest high-resolution datasets available for human pressures. We assessed the extent and intensity of human pressure within Iranian protected areas, and across the biomes and ecoregions of Iran. We found that almost one-quarter (22%) of officially protected land was under intense human pressure, mostly located in north-west and west of the country. Protected areas within temperate grasslands, savannas, and shrublands are most impacted, with two-third of their area under intense pressure. The findings provide valuable information for targeting management strategies to alleviate human pressures within protected areas, and also act as a comprehensive database to track the state of protected areas through time.

Prescribing Practices of Nurse Practitioners and Physician Assistants Waivered to Prescribe Buprenorphine and the Barriers They Experience Prescribing Buprenorphine.

BACKGROUND: In 2016, the Comprehensive Addiction Recovery Act permitted nurse practitioners (NPs) and physician assistants (PAs) to obtain a waiver to prescribe buprenorphine to treat opioid use disorder (OUD), with the goal of increasing access to this treatment. This study's purpose was to describe the buprenorphine prescribing practices of NPs and PAs and compare the barriers rural and urban providers face delivering treatment. METHODS: From the October 2018 Drug Enforcement Administration list of providers with the waiver to prescribe buprenorphine, all rural NPs and PAs (1,057) and a random sample of 500 urban NPs and PAs were surveyed. The questionnaire queried respondents about demographics, prescribing practices, practice characteristics, reimbursement policies, and barriers to prescribing buprenorphine to treat OUD. RESULTS: Of the waivered NPs and PAs, 80.3% reported having prescribed buprenorphine and 71.1% said they were currently accepting new patients with OUD. Providers with the 30-patient waiver were treating, on average, 13.2 patients; 37.0% were not treating any patients. The most common barrier, cited by half of providers, was concerns about diversion/medication misuse. More rural providers indicated lack of specialty backup and mental health providers as a barrier than urban providers. Never-prescribers and former-prescribers reported 6 barriers at significantly higher rates than did current prescribers. More rural providers accepted Medicaid and cash reimbursement than urban providers. CONCLUSIONS: NPs and PAs face many of the same barriers to providing buprenorphine as physicians have reported. Interventions to address these barriers have the potential to benefit all providers with the waiver to prescribe buprenorphine.

Quantifying biases in marine-protected-area placement relative to abatable threats.

Marine protected areas (MPAs) are a critical defense against biodiversity loss in the world's oceans, but to realize near-term conservation benefits, they must be established where major threats to biodiversity occur and can be mitigated. We quantified the degree to which MPA establishment has targeted stoppable threats (i.e., threats that can be abated through effectively managed MPAs alone) by combining spatially explicit marine biodiversity threat data in 2008 and 2013 and information on the location and potential of MPAs to halt threats. We calculated an impact metric to determine whether countries are protecting proportionally more high- or low-threat ecoregions and compared observed values with random protected-area allocation. We found that protection covered <2% of ecoregions in national waters with high levels of abatable threat in 2013, which is ∼59% less protection in high-threat areas than if MPAs had been placed randomly. Relatively low-threat ecoregions had 6.3 times more strict protection (International Union for Conservation of Nature categories I-II) than high-threat ecoregions. Thirty-one ecoregions had high levels of stoppable threat but very low protection, which presents opportunities for MPAs to yield more significant near-term conservation benefits. The extent of the global MPA estate has increased, but the establishment of MPAs where they can reduce threats that are driving biodiversity loss is now urgently needed.

Sesgos de Cuantificación en la Ubicación de Áreas Marinas Protegidas en Relación con las Amenazas Abatibles a la Biodiversidad Resumen Las áreas marinas protegidas (MPAs, en inglés) son un sistema de defensa crítica contra la pérdida de biodiversidad en los océanos del mundo, pero para hacer realidad los beneficios de conservación de corto plazo, estas áreas deben establecerse en donde ocurren la mayoría de las amenazas para la biodiversidad y en donde puedan mitigarse. Cuantificamos el grado al cual la fundación de MPAs se ha enfocado en amenazas abatibles (es decir, amenazas que pueden abatirse solamente por medio de MPAs manejadas efectivamente) al combinar los datos de amenazas para la biodiversidad marina espacialmente explícita en 2008 y en 2013 y la información sobre la ubicación y el potencial que tienen las MPAs para detener las amenazas. Calculamos una medida de impacto para determinar si los países están protegiendo proporcionalmente más ecoregiones de alta o baja amenaza y comparamos los valores observados con las áreas protegidas asignadas al azar. Descubrimos que la protección cubría <2% de las ecoregiones en aguas nacionales con niveles altos de amenazas abatibles en 2013, lo cual es ∼59% menos protección en las áreas de alta amenaza que si las MPAs se hubieran ubicado al azar. Las ecoregiones con una baja amenaza relativa tuvieron 6.3 veces más protección estricta (categorías I-II de la Unión Internacional para la Conservación de la Naturaleza) que las ecoregiones con amenaza alta. Treinta y un ecoregiones tuvieron niveles altos de amenazas abatibles pero muy baja protección, lo cual representa oportunidades para que las MPAs tengan más beneficios significativos a corto plazo. La extensión del conjunto global de MPAs ha incrementado, pero la fundación de MPAs en lugares donde pueden reducir laamenazas que causan la pérdida de biodiversidad es una necesidad urgente en día.

The Location and Protection Status of Earth's Diminishing Marine Wilderness.

As human activities increasingly threaten biodiversity [1, 2], areas devoid of intense human impacts are vital refugia [3]. These wilderness areas contain high genetic diversity, unique functional traits, and endemic species [4-7]; maintain high levels of ecological and evolutionary connectivity [8-10]; and may be well placed to resist and recover from the impacts of climate change [11-13]. On land, rapid declines in wilderness [3] have led to urgent calls for its protection [3, 14]. In contrast, little is known about the extent and protection of marine wilderness [4, 5]. Here we systematically map marine wilderness globally by identifying areas that have both very little impact (lowest 10%) from 15 anthropogenic stressors and also a very low combined cumulative impact from these stressors. We discover that ∼13% of the ocean meets this definition of global wilderness, with most being located in the high seas. Recognizing that human influence differs across ocean regions, we repeat the analysis within each of the 16 ocean realms [15]. Realm-specific wilderness extent varies considerably, with >16 million km2 (8.6%) in the Warm Indo-Pacific, down to <2,000 km2 (0.5%) in Temperate Southern Africa. We also show that the marine protected area estate holds only 4.9% of global wilderness and 4.1% of realm-specific wilderness, very little of which is in biodiverse ecosystems such as coral reefs. Proactive retention of marine wilderness should now be incorporated into global strategies aimed at conserving biodiversity and ensuring that large-scale ecological and evolutionary processes continue. VIDEO ABSTRACT.

One-third of global protected land is under intense human pressure.

In an era of massive biodiversity loss, the greatest conservation success story has been the growth of protected land globally. Protected areas are the primary defense against biodiversity loss, but extensive human activity within their boundaries can undermine this. Using the most comprehensive global map of human pressure, we show that 6 million square kilometers (32.8%) of protected land is under intense human pressure. For protected areas designated before the Convention on Biological Diversity was ratified in 1992, 55% have since experienced human pressure increases. These increases were lowest in large, strict protected areas, showing that they are potentially effective, at least in some nations. Transparent reporting on human pressure within protected areas is now critical, as are global targets aimed at efforts required to halt biodiversity loss.

Sixteen years of change in the global terrestrial human footprint and implications for biodiversity conservation.

Human pressures on the environment are changing spatially and temporally, with profound implications for the planet's biodiversity and human economies. Here we use recently available data on infrastructure, land cover and human access into natural areas to construct a globally standardized measure of the cumulative human footprint on the terrestrial environment at 1 km(2) resolution from 1993 to 2009. We note that while the human population has increased by 23% and the world economy has grown 153%, the human footprint has increased by just 9%. Still, 75% the planet's land surface is experiencing measurable human pressures. Moreover, pressures are perversely intense, widespread and rapidly intensifying in places with high biodiversity. Encouragingly, we discover decreases in environmental pressures in the wealthiest countries and those with strong control of corruption. Clearly the human footprint on Earth is changing, yet there are still opportunities for conservation gains.

Global terrestrial Human Footprint maps for 1993 and 2009.

Remotely-sensed and bottom-up survey information were compiled on eight variables measuring the direct and indirect human pressures on the environment globally in 1993 and 2009. This represents not only the most current information of its type, but also the first temporally-consistent set of Human Footprint maps. Data on human pressures were acquired or developed for: 1) built environments, 2) population density, 3) electric infrastructure, 4) crop lands, 5) pasture lands, 6) roads, 7) railways, and 8) navigable waterways. Pressures were then overlaid to create the standardized Human Footprint maps for all non-Antarctic land areas. A validation analysis using scored pressures from 3114×1 km(2) random sample plots revealed strong agreement with the Human Footprint maps. We anticipate that the Human Footprint maps will find a range of uses as proxies for human disturbance of natural systems. The updated maps should provide an increased understanding of the human pressures that drive macro-ecological patterns, as well as for tracking environmental change and informing conservation science and application.

Correction: Modeling Reef Fish Biomass, Recovery Potential, and Management Priorities in the Western Indian Ocean.

[This corrects the article DOI: 10.1371/journal.pone.0154585.].

Modeling Reef Fish Biomass, Recovery Potential, and Management Priorities in the Western Indian Ocean.

Fish biomass is a primary driver of coral reef ecosystem services and has high sensitivity to human disturbances, particularly fishing. Estimates of fish biomass, their spatial distribution, and recovery potential are important for evaluating reef status and crucial for setting management targets. Here we modeled fish biomass estimates across all reefs of the western Indian Ocean using key variables that predicted the empirical data collected from 337 sites. These variables were used to create biomass and recovery time maps to prioritize spatially explicit conservation actions. The resultant fish biomass map showed high variability ranging from ~15 to 2900 kg/ha, primarily driven by human populations, distance to markets, and fisheries management restrictions. Lastly, we assembled data based on the age of fisheries closures and showed that biomass takes ~ 25 years to recover to typical equilibrium values of ~1200 kg/ha. The recovery times to biomass levels for sustainable fishing yields, maximum diversity, and ecosystem stability or conservation targets once fishing is suspended was modeled to estimate temporal costs of restrictions. The mean time to recovery for the whole region to the conservation target was 8.1(± 3SD) years, while recovery to sustainable fishing thresholds was between 0.5 and 4 years, but with high spatial variation. Recovery prioritization scenario models included one where local governance prioritized recovery of degraded reefs and two that prioritized minimizing recovery time, where countries either operated independently or collaborated. The regional collaboration scenario selected remote areas for conservation with uneven national responsibilities and spatial coverage, which could undermine collaboration. There is the potential to achieve sustainable fisheries within a decade by promoting these pathways according to their social-ecological suitability.

Integrating human responses to climate change into conservation vulnerability assessments and adaptation planning.

The impact of climate change on biodiversity is now evident, with the direct impacts of changing temperature and rainfall patterns and increases in the magnitude and frequency of extreme events on species distribution, populations, and overall ecosystem function being increasingly publicized. Changes in the climate system are also affecting human communities, and a range of human responses across terrestrial and marine realms have been witnessed, including altered agricultural activities, shifting fishing efforts, and human migration. Failing to account for the human responses to climate change is likely to compromise climate-smart conservation efforts. Here, we use a well-established conservation planning framework to show how integrating human responses to climate change into both species- and site-based vulnerability assessments and adaptation plans is possible. By explicitly taking into account human responses, conservation practitioners will improve their evaluation of species and ecosystem vulnerability, and will be better able to deliver win-wins for human- and biodiversity-focused climate adaptation.

Old and sleeping rough: elderly homeless persons on the streets of Boston.

Older individuals living on the streets of our urban cities are a unique sub-group of the homeless population. No studies have been published about these elderly "rough sleepers" who face daunting obstacles to health care while facing a litany of health risks on the streets that are magnified by the physical and mental limitations of advancing years. To improve our understanding of this itinerant group, the Street Team of the Boston Health Care for the Homeless Program prospectively followed 30 individuals aged 60 or older living on Boston's streets for the four-year period from 2000 through 2003. This cohort included 8 (27%) women and 22 (73%) men ranging in age from 60 to 82 years. The average age was 67 years old At the end of the four year study period, 9 (30%) had died and 6 (20%) were in nursing homes. Despite intense efforts, only 5 (17%) found housing. Seven (23%) were still on Boston's streets after four years, and one was lost to follow-up. We conclude that elderly rough sleepers have high morbidity and mortality and pose significant challenges to programs seeking to provide housing and supportive health care services for this vulnerable sub-group of elderly homeless persons. New and creative housing options are needed, and the delicate issues of competency and guardianship must be addressed.