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This dataset contains taxonomic information, counts, and lengths of macroinvertebrates collected from rivers in northwest Alaska using drift and kick nets during summer and fall 2015-2019.
Album caption: Figure 1. Lagena laevis (Montagu) (p. 20). USNM 241892, X 30; Kara Sea, sta. 53. 2. Laryngodigma hyalascidia (Loeblich and Tappan) (p. 20) USNM 241905, X 50; Kara Sea sta. 106 3. Bulimina exilis (Brady) (p. 17) USNM 241893, X 50; Kara Sea, sta. 53. 4. Parafissarina sp. (p. 20). USNM 241924, X 30; Greenland Sea, sta. 13. a, Front view; b, side view. 5. Parafissarina tectulostoma (Loeblich and Tappan) (p. 20). USNM 241931, X 50; Greenland Sea, sta. 33. 6. Parafissarina groenlandica (Stschedrina) (p. 20). ...
Climate change is already affecting ecosystems, and will likely trigger significant and permanent changes in both ecological and human communities. Such transformations are already occurring in the Arctic region of Alaska, where temperatures are warming at twice the global average and causing some ecosystems to transition to new states. Arctic warming has led to coastal erosion that has forced human communities to relocate and a loss of sea ice that has forced marine mammals, such as polar bears and walrus, to adapt to a more terrestrial mode of living. Meanwhile, in the Great Plains of the U.S., past interactions between land and water use during the Dust Bowl and recent high rates of depletion of the Ogallala...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2019,
Arctic,
Arctic,
CASC,
Drought,
Snow conditions are extremely important to a wide range of hydrologic and ecosystem components and processes, including those related to surface energy and moisture stores and fluxes, vegetation, mammals, birds, and fish. The required snow datasets currently do not exist at the required spatial and temporal resolutions needed by end users such as scientists, land managers, and policy makers.
Categories: Publication;
Types: Citation;
Tags: Alaska CASC,
Arctic,
Arctic,
Landscapes,
Other Water,
The digitally compiled map includes geology, oil and gas field centerpoints, and geologic provinces of the Arctic (North Pole area encircled by 640 N Latitude). The GIS data sets were designed originally in ESRI's ARC/INFO ver. 8.0.1 and were published as part of a series of interim CD-ROM products of the U.S. Geological Survey's World Energy Project (WEP). The goal of the WEP is to assess the undiscovered, technically recoverable oil and gas resources of the world. Results of this assessment were reported in the year 2000 (see USGS DDS-60; http://pubs.usgs.gov/dds/dds-060/).
The digitally compiled map includes geology, oil and gas field centerpoints, and geologic provinces of the Arctic (North Pole area encircled by 640 N Latitude). The GIS data sets were designed originally in ESRI's ARC/INFO ver. 8.0.1 and were published as part of a series of interim CD-ROM products of the U.S. Geological Survey's World Energy Project (WEP). The goal of the WEP is to assess the undiscovered, technically recoverable oil and gas resources of the world. Results of this assessment were reported in the year 2000 (see USGS DDS-60; http://pubs.usgs.gov/dds/dds-060/).
The dataset consists of geochemical and isotopic data from fine-grained sediments and glendonite crystals collected at Carter Creek on the North Slope of Alaska. Total Organic Carbon (TOC) values in the measured section were found to range between 0.5 and 3.5%, with a shift towards lower values in the uppermost 5 m of the section. Stable isotopes (13C) in organic matter were relatively stable throughout the section, ranging between -25.5 and -26, with a slight 0.3 per mil positive shift within this range approximately 57 m from the base of the section. Glendonites themselves were analyzed for δ13Ccarb and δ18Ocarb, with δ18O values relatively consistent between -0.22 and +1.28, and a much wider range of δ13C values...
This coverage includes arcs, polygons and polygon labels that describe Arctic portion of the U.S. Geological Survey defined geologic provinces of the World in 2000.
Berry-producing plants, a key resource in Alaska Native communities, provide primary subsistence and have been integral to maintaining cultural cohesion, sense of place, and physical ties to the surrounding landscape. Despite the importance of berry-producing plants, relatively little is known about their vulnerability to changes in climate and environmental conditions. The dynamics of insect populations are strongly related to climate; however, very little is known about the insect pollinators of berry plants in Arctic and sub-Arctic ecosystems. This interaction between plants and pollinators is critical to plant communities and for providing fruit resources to Indigenous communities. Numerous plant species...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2022,
Alaska,
Alaska CASC,
Alaska Natives and Corporations,
Alaska Natives and Corporations,
To meet the climate change planning and adaptation needs of Alaska managers and decision makers, I developed a set of statewide summaries of available climate change projections that can be further subset using GIS techniques for requests by management unit, watershed, or other location. This facilitates the development of tailored climate futures for decision makers’ regional or subregional management context. This file describes the source data and summaries for purposes of technical /scientific documentation. The methods and presentation for these datasets were adapted from products in previous USGS-approved IP products for the AKCASC Building Resilience Today project (e.g, Community of Kotlik et al. 2019)....
The thawing of ice-rich soils in permafrost landscapes, a process known as thermokarst, can result in profound impacts on the energy and water balance, carbon fluxes, wildlife habitat, and existing infrastructure in the local area. The Alaska Thermokarst Model is a “state-and-transition" model being developed to simulate landscape evolution in polygonal tundra landscapes commonly found on the Arctic Coastal Plain of Alaska. This study will focus on the second step of the landscape evolution process – initiation of the thermokarst process through the concept of “climate priming” of the landscape. “Climate priming” occurs when there is high early and total winter snow precipitation, above normal winter temperatures,...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2021,
Alaska,
Alaska CASC,
Arctic,
Arctic,
In Arctic and sub-Arctic regions, snow plays a crucial role in atmospheric and hydrologic systems and has a major influence on the health and function of regional ecosystems. Warming temperatures may have a significant impact on snow and may therefore affect the entire water cycle of the region. A decrease in precipitation in the form of snow, or “snow drought”, can manifest in several ways including changes to total snowfall amounts, snow accumulation, and the timing/length of the snow season. Understanding these changes is then critical for understanding and predicting a variety of climate impacts to wildlife and ecosystems. However, little research has been conducted to date to understand how this change may...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2016,
Alaska,
Alaska CASC,
Arctic,
Arctic,
The datasets contains include permafrost microbial community taxanomic data at the class level from 133 samples across the panarctic.
Permafrost – the thick layer of permanently frozen soil found in Arctic regions – has been thawing rapidly over the past century due to climate change. When permafrost thaws unevenly, it produces thermokarst landscapes, irregular surfaces of small hills interspersed with hollows. The processes that produce thermokarst can lead to significant changes within the surrounding ecosystems, altering water quality, vegetation, and water, carbon, and nutrient storage and flows. These changes can have substantial implications for fish and wildlife populations and disrupt rural communities and infrastructure. The goal of this project was to better understand the extent of thermokarst processes and the rate at which they...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2012,
Alaska,
Alaska CASC,
Arctic,
Arctic,
Alaska’s land, water, plants, wildlife, and seasons are undergoing a great upheaval, and its people, especially the communities living in remote villages are directly and severely impacted by these widespread environmental changes. These changes are not only widespread but also often so rapid that we cannot possibly have enough scientists and professionals on the ground to detect and predict these changes before their effects are obvious. Especially environmental changes occurring in and around the remote communities in Alaska are directly affecting the subsistence resources and practices, thus have the most impact on the socio-economic conditions of these communities. In order to detect, monitor, and forecast these...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2016,
Alaska,
Alaska CASC,
Arctic,
Arctic,
Areas along the Arctic coast are changing the fastest among all of Earth’s habitats due to climate change. The Arctic coast is a fragile ecosystem that provides habitat for migratory birds, endangered species, and species critical for local subsistence living. In this area, permafrost is thawing rapidly, changing how much and when water reaches rivers, ponds, lakes, wetlands and groundwater. In addition, there is also a growing interest in oil and gas resource exploration. With ongoing permafrost thaw, future warming, and interests in oil and gas extraction in the coastal plain (also known as the 1002 area) of the Arctic National Wildlife Refuge, it is urgent to improve the understanding of this area and its vulnerability...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2021,
Alaska,
Alaska,
Alaska CASC,
Alaska CASC,
Landscape Conservation Cooperatives (LCCs) are public-private partnerships composed of states, tribes, federal agencies, non-governmental organizations, universities, international jurisdictions, and others working together to address landscape and seascape scale conservation issues. LCCs inform resource management decisions to address broad-scale stressors-including habitat fragmentation, genetic isolation, spread of invasive species, and water scarcity-all of which are magnified by a rapidly changing climate. For further information go to https://www.fws.gov/science/catalog. The previous 2011 LCC Network Areas data is available at https://www.sciencebase.gov/catalog/item/52f2735ee4b0a6f0bd498c2f
Categories: Data,
Publication;
Types: ArcGIS Map Package,
ArcGIS REST Map Service,
ArcGIS Service Definition,
Citation,
Downloadable,
Map Service;
Tags: Aleutian and Bering Sea Islands,
Appalachian,
Arctic,
California,
Caribbean,
Landscape Conservation Cooperatives (LCCs) are public-private partnerships composed of states, tribes, federal agencies, non-governmental organizations, universities, international jurisdictions, and others working together to address landscape and seascape scale conservation issues. LCCs inform resource management decisions to address broad-scale stressors-including habitat fragmentation, genetic isolation, spread of invasive species, and water scarcity-all of which are magnified by a rapidly changing climate. For further information go to https://www.fws.gov/science/catalog. The previous 2011 LCC Network Areas data is available at https://www.sciencebase.gov/catalog/item/52f2735ee4b0a6f0bd498c2f
Categories: Data,
Publication;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Aleutian and Bering Sea Islands,
Appalachian,
Arctic,
California,
Caribbean,
Water temperature plays a large role in freshwater ecosystems in the Arctic and sub-Arctic. It affects the physical and biological features of rivers, like how the water interacts with the landscape and the life cycles of organisms that live in the river. For example, unseasonably warm water temperatures in Alaska’s large rivers in 2019 caused large numbers of salmon to die before they could reach their spawning grounds. Though water temperature data is important for natural resources monitoring programs, these data are historically lacking and hard to collect for large river systems. Satellites and other remote sensing techniques can offer valuable insight to Alaskan stream conditions. They can measure thermal...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2022,
Alaska,
Alaska CASC,
Arctic,
Arctic,
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