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Folders: ROOT > ScienceBase Catalog > National and Regional Climate Adaptation Science Centers ( Show direct descendants )

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Note: this data release has been deprecated. Please see new data release here: https://doi.org/10.5066/P18WWMVR. Freshwater fish are among the most vulnerable taxa to climate change globally but are generally understudied in tropical island ecosystems. Climate change is predicted to alter the intensity, frequency, and variability of extreme flow events on the Caribbean island of Puerto Rico. These changes may impact Caribbean native and non-native stream ecosystems and biota complex ways. We compiled an extensive dataset of native and non-native fish assemblages collected at 119 sites across Puerto Rico from 2005 to 2015. We coupled these data with stream flow indices and dam height to understand how flow dynamics...
Under climate change, ecosystems are experiencing novel drought regimes, often in combination with stressors that reduce resilience and amplify drought’s impacts. Consequently, drought appears increasingly likely to push systems beyond important physiological and ecological thresholds, resulting in substantial changes in ecosystem characteristics persisting long after drought ends (i.e., ecological transformation). In the present article, we clarify how drought can lead to transformation across a wide variety of ecosystems including forests, woodlands, and grasslands. Specifically, we describe how climate change alters drought regimes and how this translates to impacts on plant population growth, either directly...
Categories: Publication; Types: Citation
In the face of climate change and associated increases in disturbances, some areas, known as refugia, will remain or become newly habitable for species, while others will be lost. Planning and managing for refugia can support biodiversity and conservation. However, without explicit consideration of justice, planning and management for refugia risks unnecessarily limiting information about local conditions and traditional practices that may be contained in Indigenous knowledges, and causing maladaptive consequences such as exclusion of Indigenous communities from decision-making and from protected areas, with loss of use of traditional plants and animals. The article proposes a new concept, Indigenous refugia, that...
Categories: Publication; Types: Citation
There is broad concern that the range shifts of global flora and fauna will not keep up with climate change, increasing the likelihood of population declines and extinctions. Many populations of nonnative species already have advantages over native species, including widespread human-aided dispersal and release from natural enemies. But do nonnative species also have an advantage with climate change? Here, we review observed and potential range shifts for native and nonnative species globally. We show that nonnative species are expanding their ranges 100 times faster than native species, reflecting both traits that enable rapid spread and ongoing human-mediated introduction. We further show that nonnative species...
Categories: Publication; Types: Citation
As wildfire activity increases and fire-size distributions potentially shift in many forested regions worldwide, anticipating the spatial patterns of burn severity expected with future fire activity is critical for ecological understanding and informing management and policy. Because spatial patterns of burn severity are influenced by a complex mixture of drivers, they remain difficult to predict for any given burned landscape. At broader extents, however, spatial scaling relationships relating high-severity patch size and shape to overall fire size, when combined with scenarios regarding regional area burned and fire-size distributions, offer a means to anticipate the spatial configuration of burn severity in future...
Categories: Publication; Types: Citation
The goals of my fellowship project were to: (1) contextualize how habitat management in eastern North Carolina may be impacted when accounting for the future effects of climate change; and (2) develop risk assessment tools to assist conservation managers in the region meet their ecosystem objectives using prescribed fire. The results of this project were intended to help habitat managers meet their conservation goals in a future characterized by changing climate conditions.
Categories: Publication; Types: Citation
The geographic redistributions of species due to a rapidly changing climate are poised to perturb ecological communities and significantly impact ecosystems and human livelihoods. Effectively managing these biological impacts requires a thorough understanding of the patterns and processes of species geographic range shifts. While substantial recent redistributions have been identified and recognized to vary by taxon, region, and range geometry, there are large gaps and biases in the available evidence. Here, we use the largest compilation of geographic range change observations to date, comprised of 33,016 potential redistributions across 12,009 species, to formally assess within- and cross-species coverage and...
Categories: Publication; Types: Citation
Predicting the effects of warming temperatures on the abundance and distribution of organisms under future climate scenarios often requires extrapolating species–environment correlations to climatic conditions not currently experienced by a species, which can result in unrealistic predictions. For poikilotherms, incorporating species' thermal physiology to inform extrapolations under novel thermal conditions can result in more realistic predictions. Furthermore, models that incorporate species and spatial dependencies may improve predictions by capturing correlations present in ecological data that are not accounted for by predictor variables. Here, we present a joint species, spatially dependent physiologically...
Categories: Publication; Types: Citation


    map background search result map search result map The Effects of Flow Extremes on Native and Non-Native Stream Fishes in Puerto Rico (Deprecated July 2024) The Effects of Flow Extremes on Native and Non-Native Stream Fishes in Puerto Rico (Deprecated July 2024)