Filters: Date Range: {"choice":"year"} (X) > Categories: Publication (X) > partyWithName: Southeast CASC (X)
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Executive Summary The National Park Service (NPS), in collaboration with the U.S. Geological Survey (USGS), recognizes the need to quantify the sediment budget of the barrier islands within the Gulf Islands National Seashore (GINS) to understand the coastal processes affecting island resiliency. To achieve this goal, identifying and quantifying the physical parameters that drive long-term change is necessary to model the processes that are both generative and terminal in island evolution and capture island response to long-term human alteration and climatic patterns. For example, measuring change across periods of storminess is more effective at assessing island resiliency than measuring change resulting from...
Categories: Publication;
Types: Citation
Abstract (from Springer): Climate change is altering species’ range limits and transforming ecosystems. For example, warming temperatures are leading to the range expansion of tropical, cold-sensitive species at the expense of their cold-tolerant counterparts. In some temperate and subtropical coastal wetlands, warming winters are enabling mangrove forest encroachment into salt marsh, which is a major regime shift that has significant ecological and societal ramifications. Here, we synthesized existing data and expert knowledge to assess the distribution of mangroves near rapidly changing range limits in the southeastern USA. We used expert elicitation to identify data limitations and highlight knowledge gaps for...
Categories: Publication;
Types: Citation
Rural disaster recovery governance focuses on the actions that governments take to address the immediate economic, environmental, and infrastructure needs of communities, but does not consider the structural limitations of rural communities, or the transformational power of community leadership. Applying knowledge of community leadership, governance, and social capital in a rural community where social relationships and local-level leadership are central to external interactions provides space to understand the challenges, opportunities, and limitations of disaster recovery governance and leadership systems. To do this, we conduct a secondary thematic analysis of 30 interviews of 32 disaster recovery leaders in...
Categories: Publication;
Types: Citation
Summary (from NESP Methods Brief Series): This methods brief focuses on water purification by natural land cover, which removes nonpoint-source pollutants from runoff water before they reach waterways. This analysis maps natural land cover within the likely flowpaths of water from agricultural areas to waterways. Regional priority areas for the restoration of additional natural land cover in the flowpaths and for the conservation of existing natural land cover in the flowpaths are identified based on the amount of agricultural land and the proportion of flowpaths that are made up of purifying natural land cover. Spatial datasets for these priority areas and associated metrics are available on ScienceBase.
Categories: Publication;
Types: Citation
Summary (from NESP Methods Brief): This methods brief focuses on wild pollination, which is beneficial to the production of many pollinator-dependent crops. This analysis maps the supply of potential wild pollinator habitat and the demand for pollination from agriculture. Regional priority areas for conservation and restoration of wild pollinator habitat are identified based on several metrics derived from these supply and demand maps. Spatial datasets for these priority areas and associated metrics are available on ScienceBase.
Categories: Publication;
Types: Citation
J.N. “Ding” Darling National Wildlife Refuge (DDNWR) is located on Sanibel Island along the southwestern coast of Florida, USA. Sanibel Island is heavily developed, but DDNWR provides protection for a large mangrove area that supports biodiversity and recreational opportunity. However, nitrogen (N) and phosphorus (P) eutrophication attributed to agriculture discharge along the Caloosahatchee River has affected the area’s aquatic habitat with algal blooms and may be causing untimely degradation of Sanibel’s mangrove forests. We launched a series of studies to understand how additional nutrient loading to the levels expected in the future might affect DDNWR’s mangrove resource. We experimentally fertilized selected...
Categories: Publication;
Types: Citation
Abstract (from WileyOnline): Stakeholders fundamentally shape the success of wildlife management, yet little is known about how one of the most important stakeholder groups, wildlife agency decision makers, view emerging conservation challenges. Wildlife agency decision makers collectively shape how wildlife conservation unfolds in North America, but their perspectives are generally absent in the literature. Challenges including climate change, conservation funding models, and wildlife disease make understanding how wildlife decision makers view the future of wildlife conservation essential. We interviewed 48 directors and supervisory board members of wildlife agencies in the southeast United States from July 2019...
Categories: Publication;
Types: Citation
Abstract (from WileyOnline): An inherent challenge in managing rare or cryptic species is data deficiency. For this reason, ancillary data is a potentially valuable resource for generating key population estimates for priority species. We compiled ancillary commensal data collected between 1982 and 2020 during surveys of gopher tortoise (Gopherus polyphemus) burrows to estimate the terrestrial distribution of gopher frogs (Rana capito) from potential breeding wetlands. Gopher frogs were detected in gopher tortoise burrows 30‒3,879 m from identified wetlands. A global model of all records from all sites indicated that the probability of a gopher frog residing in a gopher tortoise burrow declined with increasing distance...
Categories: Publication;
Types: Citation
Abstract (from ScienceDirect): Climate change may induce mismatches between wildlife reproductive phenology and temporal occurrence of resources necessary for reproductive success. Verifying and elucidating the causal mechanisms behind potential mismatches requires large-scale, longer-duration data. We used eastern wild turkey (Meleagris gallopavo silvestris) nesting data collected across the southeastern U.S. over eight years to investigate potential climatic drivers of variation in nest initiation dates. We investigated climactic relationships with two datasets, one inclusive of successful and unsuccessful nests (full dataset) and another of just successful nests (successfully hatched dataset), to determine whether...
Categories: Publication;
Types: Citation
Emydoidea blandingii (Holbrook, 1838; Blanding’s turtles) are a species of medium-sized, long-lived, semiaquatic, freshwater turtles with a wide distribution across the northern and eastern United States and southern Canada. They have an annual activity cycle consisting of late autumn and winter overwintering and spring emergence, spring movement and foraging, spring and summer nesting, and summer and autumn foraging and nonnesting movement. In response to changes in average and extreme temperatures, Blanding’s turtles are likely to experience increased physiological stress and reduced reproductive success. Variability in precipitation may affect the availability of freshwater habitats for overwintering, shelter,...
Categories: Publication;
Types: Citation
Abstract (from USGS): Adapting cultural resources to climate-change effects challenges traditional cultural resource decision making because some adaptation strategies can negatively affect the integrity of cultural resources. Yet, the inevitability of climate-change effects—even given the uncertain timing of those effects—necessitates that managers begin prioritizing resources for climate-change adaptation. Prioritization imposes an additional management challenge: managers must make difficult tradeoffs to achieve desired management outcomes related to maximizing the resource values. This report provides an overview of a pilot effort to integrate vulnerability (exposure and sensitivity), significance, and use potential...
Categories: Publication;
Types: Citation;
Tags: Sea-Level Rise and Coasts,
Southeast CASC,
Water, Coasts and Ice
Abstract (from ScienceDirect): Natural resource plans play a critical role in guiding the sustainable management of forest ecosystems. However, little is known about the quality of management plans. In this study, we evaluated and compared the quality of 35 management plans from federal, state, and nongovernment groups managing longleaf pine ecosystems in the Southeast United States. We developed a plan evaluation tool consisted of five components: (1) Problem and Objective Statement, (2) Fact Base, (3) Actions and Implementation, (4) Integration with Other Plans, and (5) Stakeholder Participation, to examine to what extent plans incorporated planning best practices. We tested a hypothetical model for understanding...
Categories: Publication;
Types: Citation;
Tags: Data Visualization & Tools,
Science Tools For Managers,
Southeast CASC
Abstract (from FireEcology) Background: Projected trajectories of climate and land use change over the remainder of the twenty-first century may result in conditions and situations that require flexible approaches to conservation planning and practices. For example, prescribed burning is a widely used management tool for promoting longer-term resilience and sustainability in longleaf pine ecosystems of the southeastern United States, but regional stressors such as climatic warming, changing fire conditions, and an expanding wildland-urban interface may challenge its application. To facilitate the development of fire management strategies that account for such changes, we surveyed nearly 300 fire managers to elicit...
Categories: Publication;
Types: Citation
Abstract (from ScienceDirect): Extreme streamflow is a key indicator of flood risk, and quantifying the changes in its distribution under non-stationary climate conditions is key to mitigating the impact of flooding events. We propose a non-stationary process mixture model (NPMM) for annual streamflow maxima over the central US (CUS) which uses downscaled climate model precipitation projections to forecast extremal streamflow. Spatial dependence for the model is specified as a convex combination of transformed Gaussian and max-stable processes, indexed by a weight parameter which identifies the asymptotic regime of the process. The weight parameter is modeled as a function of the annual precipitation for each of...
Categories: Publication;
Types: Citation
Extreme winter temperatures govern the northern range limit of black mangroves (Avicennia germinans) in southeastern North America. There is a pressing need for studies that advance our understanding of how extreme cold temperature events affect mangroves near their range limits. However, such events are infrequent and challenging to study at regional scales. Here, we compared the damage to mangroves from extreme freeze events in 2018 and 2021, using local data from sites in USA (Florida, Louisiana, and Texas) and northeastern Mexico (Tamaulipas). In 2018, mangrove damage was concentrated in Louisiana and the upper Texas coast, where minimum temperatures ranged from -4 °C to -7 °C. In 2021, damage from a more severe...
Categories: Publication;
Types: Citation
Sea levels across the planet are rising, particularly along the eastern coast of the United States. Climate-induced sea level rise can result in the inundation and intrusion of seawater into freshwater drainages. This would alter salinity regimes and lead to the salinization of coastal freshwater ecosystems. Increased salinity levels in freshwater can negatively affect freshwater-dependent species, including native mussels belonging to the order Unionida, which are highly sensitive to changes in water quality. Sea salt is largely made up of sodium and chloride ions, forming sodium chloride, a known toxicant to freshwater mussels. However, sea salt is a mixture that also contains other major ions, including potassium,...
Categories: Publication;
Types: Citation
Summary (from NESP Methods Brief Series): This methods brief focuses on recreational birding, which is a popular activity in the United States. This analysis maps the location of recreational birding activity in the southeastern U.S. Regional priorities for conservation of birding areas are identified based on the total amount of birding activity and the proportion of birding activity that takes place on unprotected land. Spatial datasets for these priority areas and associated metrics are available on ScienceBase.
Categories: Publication;
Types: Citation
Wildlife conservation success depends on regional conservation efforts, but little is known about barriers and opportunities that ‘boots on the ground’ wildlife conservation practitioners face when tackling regional conservation. This study provides the first data addressing these important questions in the southeastern United States. Surveyed professionals indicated that their top priority for regional conservation efforts was increasing the likelihood of conservation success for species with multi-state ranges, followed by the need to describe threats to species and their habitats. Perhaps not surprisingly, these priority areas were also where conservation practitioners were most likely to work in regional collaborations....
Categories: Publication;
Types: Citation
Impacts of sea level rise will last for centuries; therefore, flood risk modeling must transition from identifying risky locations to assessing how populations can best cope. We present the first spatially interactive (i.e., what happens at one location affects another) land change model (FUTURES 3.0) that can probabilistically predict urban growth while simulating human migration and other responses to flooding, essentially depicting the geography of impact and response. Accounting for human migration reduced total amounts of projected developed land exposed to flooding by 2050 by 5%–24%, depending on flood hazard zone (50%–0.2% annual probability). We simulated various “what-if” scenarios and found managed retreat...
Categories: Publication;
Types: Citation
Abstract (from Frontiers): Small Island Nations, often comprised of Atolls, are at considerable risk of climate change impacts from sea-level rise to coral acidification to increasing cyclone intensity; understanding how they will change in the coming century is vital for climate mitigation and resiliency. However, the morphology of atolls are not well quantified or summarized. In this work, we calculate modern atoll morphometrics on a global scale including 3,786 motu and 593 reef flats on 154 atolls. Temporal composites of Landsat imagery are created for 4 years (2015–2018), and are classified into motu, reef flat, open water/lagoon via unsupervised classification. Morphometrics, including widths, lengths, and...
Categories: Publication;
Types: Citation
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