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Folders: ROOT > ScienceBase Catalog > National and Regional Climate Adaptation Science Centers > National CASC > FY 2009 Projects ( Show direct descendants )

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Abstract: Rising environmental temperatures result from changes in land use and global climate and can cause significant shifts in the composition and distribution of species within communities. In freshwater systems, the larval life stage, glochidia, of Unionida mussels develops as an obligate parasite on host fish gills or fins before transforming into the juvenile stage and dropping to the sediment to complete the life cycle. Because of the relationship between freshwater mussels and their often specific host fish species, mussels are not only limited by their own variable thermal tolerances, but also by those of their host fish. Our intent was to compile data from available literature regarding thermal sensitivities...
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This shapefile approximates the area less than 20 km offshore of the North Pacific Coastline as defined by the "World Country Boundaries (Generalized)" shapefile distributed by ESRI as part of their Data & Maps data series.
The Geo Data Portal Blog provides news and updates about the Geo Data Portal (GDG), a portal that provides access to numerous climate datasets for particular areas of interest. Blog updates include information on new datasets, developments to the GDP and other such topics.
Here a number of scripts are provided that were developed to process the SST data. The scripts are written in the Python Language. Python is a freely-available, open-source scripting language that is object oriented and is supported by ArcGIS as a framework for creating and executing Geoprocessor tasks. Python also runs as a stand-alone programming language. The scripts were built using Python release 2.5.1, which is included with ESRI's ArcGIS 9.3.1. ArcGIS 9.3.x also supports Python version 2.5.4, but does not support later Python versions. Python is downloadable from http://www.python.org/download/releases/2.5.4/. The PythonWin development environment provides a Graphic User Interface (GUI) for the python scripting...
Abstract (from Science of the Total Environment): Changes in climate are known to alter air temperature and precipitation and their associated thermal and hydrological regimes of freshwater systems, and such alterations in habitat are anticipated to modify fish composition in fluvial systems. Despite these expected changes, assessing climate change effects on habitat and fish over large regions has proven challenging. The goal of this study is to describe an approach to assess and identify stream reaches within a large region that are susceptible to climate changes based on responses of multiple fish species to changes in thermal and hydrological habitats occurring with changes in climate. We present a six-step...
Categories: Publication; Types: Citation
Species with different ecological niches will likely exhibit distinct responses to a changing environment. Differences in the magnitude of niche specialization may also indicate which species may be more vulnerable to environmental change, as many life-history characteristics are known to affect climate change vulnerability. We characterized the niche space of three sympatric high-elevation ground-dwelling squirrels, yellow-bellied marmot (Marmota flaviventer), Belding's ground squirrel (Urocitellus beldingi), and golden-mantled ground squirrel (Callospermophilus lateralis), in the alpine and upper subalpine regions of the Sierra Nevada in California. We used 5879 observations of individual squirrels, collected...
Categories: Publication; Types: Citation
Abstract (from http://onlinelibrary.wiley.com/doi/10.1111/j.1523-1739.2012.01853.x/abstract): Globally, seabirds are vulnerable to anthropogenic threats both at sea and on land. Seabirds typically nest colonially and show strong fidelity to natal colonies, and such colonies on low-lying islands may be threatened by sea-level rise. We used French Frigate Shoals, the largest atoll in the Hawaiian Archipelago, as a case study to explore the population dynamics of seabird colonies and the potential effects sea-level rise may have on these rookeries. We compiled historic observations, a 30-year time series of seabird population abundance, lidar-derived elevations, and aerial imagery of all the islands of French Frigate...
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Our study addresses the general question of the degree to which wildlife species can adapt to, or possibly even modify, effects from climate change. We focused on five species of mammals in the alpine zone of the Sierra Nevada mountain range, including the federally endangered Sierra Nevada bighorn sheep and the American pika, a species recently proposed for listing due to the loss of populations from altered climatic conditions. It was expected that there will be an upward expansion of trees and shrubs from lower elevations and that many or even most alpine meadows will be converted to woody dominated communities. Meadows provide critical habitat for many alpine mammal species, and their conversion could represent...
Global climate change scenarios predict an increase in air and ocean temperatures, storm intensity, storm surge and inundation of low-lying coastal areas and small islands. Projections of changing oceanographic conditions and inundation are at levels that could affect seabird populations including those of the black-footed albatross (Phoebastria nigripes; BFAL). The resilience of BFAL populations in the face of more frequent extreme weather events and nesting habitat loss is therefore a critical issue for wildlife managers. Colony establishment behavior and dispersal biology are poorly understood for BFAL. Despite this uncertainty, management decisions to safeguard BFAL breeding populations in the face of climate...
Climate change is expected to result in widespread changes in species distributions (e.g., shifting, shrinking, expanding species ranges; e.g., Parmesan and Yohe 2003), especially for freshwater fish species (Heino et al. 2009). Although anglers and other resource users could be greatly affected by changes in species distributions, predicted changes are rarely reported in ways that can be easily understood by the general public. In contrast, climate science that more directly affects human welfare or livelihoods is often more readily communicated to the general public because it is of greater concern or closely related to everyday life. Read More at http://news.fisheries.org/translating-climate-change-effects-into-everyday-language-an-example-of-more-driving-and-less-angling/.
map background search result map search result map How will Mammals in the Alpine Zone of the Sierra Nevada Mountains Respond to Future Climate? laysan_island_50cm_contours laysan_island_50cm_contours How will Mammals in the Alpine Zone of the Sierra Nevada Mountains Respond to Future Climate?