Lee Hannah

Lee Hannah
Conservation International · Betty and Gordon Moore Center

About

123
Publications
78,505
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19,157
Citations
Citations since 2016
33 Research Items
8781 Citations
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Publications

Publications (123)
Article
Climate change is challenging the ability of protected areas (PAs) to meet their objectives. To improve PA planning, we developed a framework for assessing PA vulnerability to climate change based on consideration of potential climate change impacts on species and their habitats and resource use. Furthermore, the capacity of PAs to adapt to these c...
Article
Decision-makers discussing landmark agreements on health and biodiversity must include four actions to reduce the risk of animals and people exchanging viruses. Decision-makers discussing landmark agreements on health and biodiversity must include four actions to reduce the risk of animals and people exchanging viruses.
Article
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Addressing global environmental challenges requires access to biodiversity data across wide spatial, temporal and taxonomic scales. Availability of such data has increased exponentially recently with the proliferation of biodiversity databases. However, heterogeneous coverage, protocols, and standards have hampered integration among these databases...
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The lives lost and economic costs of viral zoonotic pandemics have steadily increased over the past century. Prominent policymakers have promoted plans that argue the best ways to address future pandemic catastrophes should entail, “detecting and containing emerging zoonotic threats.” In other words, we should take actions only after humans get sic...
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To meet the ambitious objectives of biodiversity and climate conventions, the international community requires clarity on how these objectives can be operationalized spatially and how multiple targets can be pursued concurrently. To support goal setting and the implementation of international strategies and action plans, spatial guidance is needed...
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Landscape connectivity improves species’ capacity to adapt to climate change. These models are increasingly needed and available for climate-change conservation planning. However, their relative strengths and weaknesses are unclear. We asked how well do the spatial outputs from four connectivity models intended to support climate change conservatio...
Article
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Biodiversity contributes to the ecological and climatic stability of the Amazon Basin1,2, but is increasingly threatened by deforestation and fire3,4. Here we quantify these impacts over the past two decades using remote-sensing estimates of fire and deforestation and comprehensive range estimates of 11,514 plant species and 3,079 vertebrate specie...
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Climate change is causing species’ ranges to shift, many at unprecedented rates, all across the planet. This poses a challenge for planning and management of biodiversity conservation through area-based conservation, as conserved areas are fixed in place. However, nearly a decade of research shows that strategic planning for new conserved areas can...
Preprint
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paragraph To meet the ambitious objectives of biodiversity and climate conventions, countries and the international community require clarity on how these objectives can be operationalized spatially, and multiple targets be pursued concurrently ¹ . To support governments and political conventions, spatial guidance is needed to identify which areas...
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Climate change is increasingly driving fundamental shifts in ecosystems, land use, and human livelihoods. Because of these rapid shifts, some conventional adaptation strategies may have limited success in reducing the impact of climate change. In some circumstances, there will be a need for considering transformative changes as part of adaptation s...
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Limiting climate change to less than 2°C is the focus of international policy under the climate convention (UNFCCC), and is essential to preventing extinctions, a focus of the Convention on Biological Diversity (CBD). The post‐2020 biodiversity framework drafted by the CBD proposes conserving 30% of both land and oceans by 2030. However, the combin...
Article
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Growing conditions for crops such as coffee and wine grapes are shifting to track climate change. Research on these crop responses has focused principally on impacts to food production impacts, but evidence is emerging that they may have serious environmental consequences as well. Recent research has documented potential environmental impacts of sh...
Article
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Climate change research often relies on downscaled General Circulation Models (GCM), projections of future scenarios that are used to build ecological and evolutionary models. With more than 35 different GCMs widely available at resolution of 10km and finer, standardized methods to understand the differences among GCM projections in a region of int...
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New Guinea is the most biologically and linguistically diverse tropical island on Earth, yet the potential impacts of climate change on its biocultural heritage remain unknown. Analyzing 2353 endemic plant species distributions, we find that 63% of species are expected to have smaller geographic ranges by 2070. As a result, ecoregions may have an a...
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A key feature of life’s diversity is that some species are common but many more are rare. Nonetheless, at global scales, we do not know what fraction of biodiversity consists of rare species. Here, we present the largest compilation of global plant diversity to quantify the fraction of Earth’s plant biodiversity that are rare. A large fraction, ~36...
Article
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The impacts of climate change and the socioecological challenges they present are ubiquitous and increasingly severe. Practical efforts to operationalize climate-responsive design and management in the global network of marine protected areas (MPAs) are required to ensure long-term effectiveness for safeguarding marine biodiversity and ecosystem se...
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Understanding how habitat heterogeneity is linked to biodiversity patterns within flood–pulse catchments is needed for their effective conservation. To study those communities, researchers have begun to explore how local environmental factors influence species composition patterns at relatively fine scales within complex habitat mosaics. However, a...
Article
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In the face of major shifts in temperature and precipitation, some conventional strategies that help people to cope or incrementally adapt to climate change may become inappropriate in the long-term. Transformative adaptation, i.e. fundamental systems' changes that address root causes of vulnerability may be needed. However, we have a limited under...
Article
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The Manokwari Declaration is an unprecedented pledge by the governors of Indonesia's two New Guinea provinces to promote conservation and become SE Asia's new Costa Rica. This is an exciting, yet challenging endeavour that will require working on many fronts that transcend single disciplines. Because Indonesian New Guinea has the largest expanse of...
Article
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Equatorial fishes, and the critically important fisheries based on them, are thought to be at-risk from climate warming because the fishes have evolved in a relatively aseasonal environment and possess narrow thermal tolerance windows that are close to upper thermal limits. We assessed survival, growth, aerobic performance and critical thermal maxi...
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Significance Coffee production supports the livelihoods of millions of smallholder farmers around the world, and bees provide coffee farms with pollination. Climate change will modify coffee and bee distributions, and thus coffee production. We modeled impacts for the largest coffee-growing region, Latin America, under global warming scenarios. Alt...
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Climate impact models are often implemented at horizontal resolutions (“scales”) too coarse to be readily applied in local impact assessments. However, recent advancements in fine-scale modeling are allowing the creation of impact models that can be applied to landscape-scale adaptation planning. Here, we illustrate the use of fine-scale impact mod...
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Climate change will have serious repercussions for agriculture, ecosystems, and farmer livelihoods in Central America. Smallholder farmers are particularly vulnerable due to their reliance on agriculture and ecosystem services for their livelihoods. There is an urgent need to develop national and local adaptation responses to reduce these impacts,...
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This special issue addresses the adaptation challenges facing smallholders, ecosystems and ecosystem services in the region. In this introduction, we review the literature on regional climate and its drivers, climate change projections, impacts on agriculture and ecosystems, and information management for adaptation in the region. Short description...
Article
Land allocation for urban growth is central to sustainable development strategy because urban growth can impact space available for food production, ecosystem services and biodiversity conservation. Urbanization is a growing stressor due the 2.5 billion additional people projected to live in urban areas by 2050. Potential climate change impacts to...
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2016. Shrinking windows of opportunity for oak seedling establishment in southern California mountains. Ecosphere 7(11): Abstract. Seedling establishment is a critical step that may ultimately govern tree species' distribution shifts under environmental change. Annual variation in the location of seed rain and microclimates results in transient " w...
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Context Predicting climate-driven species’ range shifts depends substantially on species’ exposure to climate change. Mountain landscapes contain a wide range of topoclimates and soil characteristics that are thought to mediate range shifts and buffer species’ exposure. Quantifying fine-scale patterns of exposure across mountainous terrain is a key...
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Balancing society's competing needs of development and conservation requires careful consideration of tradeoffs. Renewable energy development and biodiversity conservation are often considered beneficial environmental goals. The direct footprint and disturbance of renewable energy, however, can displace species' habitat and negatively impact popula...
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Here, we introduce a novel theory for multispecies fisheries that exploit fish stocks evenly within and across trophic levels in an entire ecosystem (i.e., fishery comprises all fleets). These “indiscriminate” fisheries may be common in developing countries where fish provide the main source of dietary protein. We show that simple food web modules,...
Article
Survival of early life stages is key for population expansion into new locations and for persistence of current populations (Harper and others 1977, Grubb 1977). Relative to adults, these early life stages are very sensitive to climate fluctuations (Ropert-Coudert et al. 2015), which often drive episodic or “event-limited” regeneration (e.g. pulses...
Technical Report
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Herbivory has a major function in maintaining reefs in a positive coral and crustose coralline algal dominance that allows vertical reef accretion to keep pace with rising sea level. Fisheries management that maintains reef herbivore populations, particularly parrotfishes, is crucial to coral reef health and its dependent ecosystem services, which...
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Climate change may drive shifts in global agriculture that will affect remaining natural lands, with important consequences for the conservation of species and ecosystems. Wine production is an excellent model for examining this type of impact, because suitable climate is central to product quality and production is centered in Mediterranean climat...
Conference Paper
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Inland fisheries represent an important source of protein and income for many communities, particularly in the tropics. It has been shown that ectotherms living in climatically stable tropical environments tend to be thermal specialists, and that some of them achieve their optimal metabolic performance at temperatures near their upper tolerance lim...
Conference Paper
Background/Question/Methods Global change poses many challenges to ecologists seeking to provide a good estimation of changes in species distributions in the Anthropocene era. Through the combination of different modeling approaches, ecologists seek to address how the changing climate and atmosphere affect processes directly linked to species ran...
Conference Paper
Background/Question/Methods Consumption of land for use in cities and urban settings is a major force altering the environment. A measure of how efficient different land use policies or plans are, is how much open space they leave for other purposes, whether natural or for human use. Here we examine the effect of five alternative policies on land...
Conference Paper
Background/Question/Methods Although numerous studies report that climate change-induced range shifts are already underway for many species, there is growing concern that some species will be unable to keep pace with rapid climate change. Of particular concern are slowly dispersing and reproducing species whose life histories are incompatible wit...
Article
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Microclimates have played a critical role in past species range shifts, suggesting that they could be important in biological response to future change. Terms are needed to discuss these future effects. We propose that populations occupying microclimates be referred to as holdouts, stepping stones and microrefugia. A holdout is a population that pe...
Article
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Addressing the global challenges of climate change, food security and poverty alleviation requires enhancing the adaptive capacity and mitigation potential of agricultural landscapes across the tropics. However, adaptation and mitigation activities tend to be approached separately, due to a variety of technical, political, financial and socioeconom...
Article
The golden toad (Bufo periglenes) disappeared from Costa Rica in 1989 and became the first terrestrial extinction to be linked to climate change. Like the first marine extinction attributed to climate change (see chapter 7), the extinction of the golden toad was linked to El Niño events. The marine extinction is irrefutably linked to coral bleachin...
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International policy is placing increasing emphasis on adaptation to climate change, including the allocation of new funds to assist adaptation efforts. Climate change adaptation funding may be most effective where it meets integrated goals, but global geographic priorities based on multiple development and ecological criteria are not well characte...
Data
Global map of crop suitability and suitability for range restricted birds change in 2050/2090 under B1 emission scenario. Areas in which overall decreases are anticipated in crop suitability are shown in green, with increasing color intensity indicating multiple GCM agreement. Areas of declining climatic suitability for restricted range birds are s...
Data
Global map of crop suitability and suitability for range restricted birds change in 2050/2090 under A2 emission scenario using the ensemble mean of 5 GCMs. Areas in which overall decreases are anticipated in crop suitability are shown in green. Areas of declining climatic suitability for restricted range birds are shown in blue. Overlap of declinin...
Data
Performance of each SDM tested by overall accuracy, Kappa, TSS, MCC, specificity and sensitivity. Maxent scored highest performance except sensitivity that RF scored the highest performance. (TIF)
Data
Global map of crop suitability and suitability for range restricted birds change in 2050 under A2 emission scenario. Areas in which overall decreases are anticipated in crop suitability are shown in green, with increasing color intensity indicating multiple GCM agreement. Areas of declining climatic suitability for restricted range birds are shown...
Data
Species and parameters used for EcoCrop modeling. Some crop species contained different species and varieties, so the model adapted the widest range of environmental requirement among species/varieties. The list of species used in the model appears below the table. Minimum and maximum temperature/precipitation requirements represent the environment...
Data
Global map of crop suitability and suitability for range restricted birds change in 2050/2090 under B1 emission scenario using mean of 5 GCMs. Areas in which overall decreases are anticipated in crop suitability are shown in green. Areas of declining climatic suitability for restricted range birds are shown in blue. Overlap of declining crop suitab...
Data
Global map of crop suitability and suitability for range restricted birds change in 2090 under A2 emission scenario using 6 Species Distribution Model results. Areas in which overall decreases are anticipated in crop suitability are shown in green, with increasing color intensity indicating multiple GCM agreement. Areas of declining climatic suitab...
Article
Full-text available
Viticulture will not cease in major wine-growing regions in response to climate change, because vineyard managers will not let that happen. Adaptation measures will be taken to permit continued cultivation of wine grapes. These adaptation measures can place major stress on water resources and freshwater ecosystems (1).
Article
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Climate change is expected to impact ecosystems directly, such as through shifting climatic controls on species ranges, and indirectly, for example through changes in human land use that may result in habitat loss. Shifting patterns of agricultural production in response to climate change have received little attention as a potential impact pathway...
Article
Recent studies suggest that species distribution models (SDMs) based on fine-scale climate data may provide markedly different estimates of climate-change impacts than coarse-scale models. However, these studies disagree in their conclusions of how scale influences projected species distributions. In rugged terrain, coarse-scale climate grids may n...
Article
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Freshwater biodiversity and ecosystem services are critically important to human wellbeing throughout the Lower Mekong River watershed and particularly so around the Tonle Sap Great Lake of Cambodia (hereafter the Tonle Sap Lake). Though seemingly lacustrine, the Tonle Sap Lake is actually an enormous wetland within a. (2012) A watershed moment for...
Conference Paper
Background/Question/Methods Global climate change is causing shifts in ranges of tree species. Many studies investigating the potential responses of tree species to climate change rely on temperature tolerances inferred from range boundaries. Field trials assessing differential growth responses within microclimates, and additionally, using seeds...
Conference Paper
Background/Question/Methods Traditional approaches to conservation can be insufficient in the face of climate change and predicted shifts in species ranges. California is particularly vulnerable because of its many endemic and threatened species. Conservation planning under climate change faces the unique problem that areas of suitable habitat sh...
Article
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As natural resource management agencies and conservation organizations seek guidance on responding to climate change, myriad potential actions and strategies have been proposed for increasing the long-term viability of some attributes of natural systems. Managers need practical tools for selecting among these actions and strategies to develop a tai...