Latitude and Longitude of Shallow Nearshore Sites Sampled by SCUBA for Kelp Abundance, Bottom Cover, and Sea Urchin Density and Size Distribution along the North Pacific Rim from Bering Island to Southeast Alaska during 1987-2021

The data consist of latitude and longitude of over 600 nearshore rocky bottom sites that were sampled by SCUBA between 1987 and 2021. The sites are from 38 locations on the north Pacific Rim ranging from Bering Island, along the Aleutian Island chain and the Alaska Peninsula to Southeast Alaska. At each site, counts were made of kelp species and estimates made of the percent cover of fleshy red and other benthic algae, as well as cover by non-motile invertebrates, in twenty 0.25 m2 quadrats. Urchins were counted and collected from quadrats until either 20 quadrats were sampled or about 200 urchins were collected. Kelp and bottom cover data and the urchin density and size data are presented in other tables. Many...

Categories: Data; Tags: Alaska Peninsula National Wildlife Refuge, Russia, Southeast Alaska, Western Aleutian Islands, geography, All tags... location, Fewer tags

Kelp and Sea Urchin Data Obtained by SCUBA at Shallow Nearshore Sites along the North Pacific Rim from Bering Island to Southeast Alaska Obtained over Multiple Decades Beginning in 1987

Between 1987 and 2021, over 600 nearshore rocky bottom sites were sampled by scuba at 38 locations on the north Pacific Rim ranging from Bering Island, along the Aleutian Island chain and the Alaska Peninsula to southeast Alaska. Sites were plotted at random from along the coasts of islands or areas designated. Hard substrate was targeted. Most sites were sampled more than once, years or decades apart. Many sites in the western Aleutians were resampled several times as sea otter populations densities changed there. Each site was sampled using 20 quadrats along 20-25-foot depth contour. At a subset of sites, 40-foot depths were sampled. Divers counted kelps but non-motile invertebrates, Desmarestia spp. (acid weed),...

Tags: Alaska Peninsula National Wildlife Refuge, Aquatic Biology, Ecology, Russia, Southeast Alaska, All tags... Southwest Alaska, USGS Science Data Catalog (SDC), Western Aleutian Islands, benthic ecosystems, biota, geography, location, sea urchins and sand dollars, Fewer tags

Corrected Fire Perimeters of Alaska's National Wildlife Refuges

This data package includes 481 geospatial vector polygons of historic fire perimeters associated with National Wildlife Refuges in Alaska. These polygons, originally held within the Alaska Large Fire Database (ALFD), were reviewed and found to have geospatial inaccuracies with respect to the fire they represent. They were corrected and updated based on a variety of remote sensing resources; the Monitoring Trends in Burn Severity (MTBS) database (https://www.mtbs.gov/viewer/index.html), geospatial rasters of historic fire activity derived from Landsat 1-9 imagery in the Google Earth Engine(https://earthengine.google.com) environment, and historical air photos acquired through EarthExplorer (https://earthexplorer.usgs.gov/)....

Categories: Data; Tags: Alaska, Alaska Peninsula National Wildlife Refuge, Arctic National Wildlife Refuge, Becharof National Wildlife Refuge, Disturbance, All tags... Environment, Fires, Forestry, Habitat alteration and disturbance, Innoko National Wildlife Refuge, Izembeck National Wildlife Refuge, Kanuti National Wildlife Refuge, Kenai National Wildlife Refuge, Kodiak National Wildlife Refuge, Koyukuk National Wildlife Refuge, Land Use / Land Cover, Land Use Change, Landsat, Landscape, Landscape Processes, Nowitna National Wildlife Refuge, Remote Sensing, Remote sensing, Selawik National Wildlife Refuge, Tetlin National Wildlife Refuge, Togiak National Wildlife Refuge, USGS Science Data Catalog (SDC), Wildland fire, Yukon Delta National Wildlife Refuge, Yukon Flats National Wildlife Refuge, Fewer tags

Alaska Landbird Monitoring Survey Dataset

Boreal Partners in Flight developed the Alaska Landbird Monitoring Survey (ALMS) primarily to monitor breeding populations of landbirds in the vast off-road areas of Alaska in conjunction with data collected from the roadside North American Breeding Bird Survey (BBS). ALMS is a collaborative program in which agencies and other entities conduct standardized surveys of breeding birds and their habitats on the lands they manage and then provide the data to the U.S. Geological Survey Alaska Science Center for analysis and archiving. The ALMS monitoring program comprises a set of survey blocks that have been selected in a stratified-random design primarily across state and Federal natural resource lands in Alaska with...

Categories: Data; Tags: Admiralty Island, Alaska, Alaska Maritime National Wildlife Refuge, Alaska Peninsula, Alaska Peninsula National Wildlife Refuge, All tags... Andreafsky Wilderness, Animal and plant census, Animals/vertebrates, Arctic National Wildlife Refuge, Biodiversity, Biogeography, Biota, Bird behavior, Birds, Chugach National Forest, Chugach State Park, Copper River Census Area, Copper River Delta Fish and Wildlife Management Area, Cranes and allies, Denali National Park and Preserve, Denali State Park, Detection distance, Ducks/geese/swans, Eagle/falcons/hawks and allies, East Fork Skagway River, Ecology, Ecology, Environment, Environmental conditions, Fairbanks North Star Borough, Field inventory and monitoring, Fort Greely, Grebes, Habitats, Herons/egrets and allies, Innoko National Wildlife Refuge, James Dalton Mountain, Joint Base Elmendorf-Richardson, Kanuti National Wildlife Refuge, Kenai Wilderness, Klondike Gold Rush National Historic Park, Kodiak National Wildlife Refuge, Koyukuk National Wildlife Refuge, Koyukuk River, Loons, Migratory birds, Mitkof Island, Mount Fairplay, National Petroleum Reserve in Alaska, Natlaratlen River, North Slope Borough, Nowitna National Wildlife Refuge, Ornithology, Perching Birds, Resident birds, Sandpipers, Selawik National Wildlife Refuge, South Baranof Wilderness, Spatial distribution, Taku Glacier, Terrestrial ecosystems, Tetlin National Wildlife Refuge, Tongass National Forest, Tracy Arm-Fords Terror Wilderness, USGS Science Data Catalog (SDC), Waders/gulls/auks and allies, Wildlife, Wildlife Biology, Fewer tags