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Location Folder Show Tree ROOT _ScienceBase Catalog __National and Regional Climate Adaptation Science Centers ___Alaska CASC FY 2011 Projects FY 2012 Projects FY 2013 Projects FY 2014 Projects FY 2015 Projects More... Filters Date Range Past year (3) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts U.S. Geological Survey Zhiliang Zhu Climate Adaptation Science Centers Christopher J. Sergeant Kevin A Fitzgerald More... Categories Data (3) Tag Types Theme (5) USGS Scientific Topic Keyword (5) Place (5) Harvest Set (5) Tag Schemes None (4) Common geographic areas (2) USGS Thesaurus (2) ISO 19115 Topic Category (4) Marine Realms Information Bank (MRIB) keywords (1) Alexandria Digital Library Feature Type Thesaurus (1) Coastal and Marine Ecological Classification Standard (1) More... View Results as: JSON ATOM CSV Browse Folder

RTK GPS survey data in 1002 area of the Arctic National Wildlife Refuge The RTK survey, using a Trimble unit, was conducted in August 2021 in the coastal plains region (1002 area) of the Arctic National Wildlife Refuge, as part of a landscape vulnerability assessment. A total of six transects are included in the data, including five research sites and one transect collected at the camp site. Mean horizontal precision was 0.006m, mean vertical precision was 0.011m. Categories: Data; Tags: Arctic, Arctic National Wildlife Refuge, Climatology, Geography, Geomorphology, All tags... Hydrology, Permafrost, RTK, USGS Science Data Catalog (SDC), Fewer tags Stream hydrology and a pulse subsidy shape patterns of fish foraging Pulsed subsidy events create ephemeral fluxes of hyper-abundant resources that can shape annual patterns of consumption and growth for recipient consumers. However, environmental conditions strongly affect local resource availability for much of the year, and can heavily impact consumer foraging and growth patterns prior to pulsed subsidy events. Thus, a consumer’s capacity to exploit pulse subsidy resources may be influenced by antecedent environmental conditions, but this has rarely been shown in nature and is unknown in aquatic ecosystems. We sampled fish at a high frequency (daily - weekly measurements) to examine the importance of hydrologic variation and a salmon pulse subsidy on the foraging patterns of two... Categories: Data; Tags: Coho Salmon, Dolly Varden, Fish foraging, Southeast Alaska, USGS Science Data Catalog (SDC), All tags... Wildlife Biology, biota, Fewer tags Alaska Climate Futures (mid and late 21st century) and Historical References (20th century) 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).... Tags: Alaska, Arctic, Climatology, USGS Science Data Catalog (SDC), biota, All tags... climate futures, climate projections, fire frequency, precipitation, snow, temperature, vegetation change, water balance, Fewer tags Riverine carbon form and flow data from a temperate forested watershed in Southeast Alaska (2021) Data from high frequency sampling of multiple carbon forms were collected in a predominately rain-fed watershed in Southeast Alaska during the main run-off season (May-October 2021). The dataset includes dissolved organic carbon, particulate organic carbon, coarse particulate organic carbon, and invertebrate biomass carbon point samples and daily stream flow. The objective of this study was to collect data on carbon export and flow to model watershed export of carbon forms. Categories: Data; Tags: Aquatic Biology, Southeast Alaska, USGS Science Data Catalog (SDC), Water Resources, biogeochemistry, All tags... environment, hydrology, organic matter, riverine carbon, Fewer tags All available data for Sergeant et al. 2020, A classification of streamflow patterns across the coastal Gulf of Alaska This .zip file contains four products that will allow users to recreate the analyses and spatial data figures used in Sergeant et al. 2020, A classification of streamflow patterns across the coastal Gulf of Alaska: 1) Autoclass input and output files (provided as folders with multiple simple text files), 2) Classification data (.csv file) for individual watersheds, including Fundamental Daily Streamflow Statistics, landcover variables, and class membership, 3) Esri map package (.mpk file) that will allow users to recreate Figures 3 and 5 using ArcGIS and extract basic watershed-scale data such as watershed ID, drainage area, primary class assignment, and primary class membership probability (for users interested... Tags: Alaska, Aquatic Biology, AutoClass, British Columbia, Coastal watersheds, All tags... Ecology, Flow regime, Fuzzy classification, Gulf of Alaska, Gulf of Alaska, Hydrology, South Central Alaska, Southeast Alaska, Southwest Alaska, Streams, USGS Science Data Catalog (SDC), Water Resources, coastal ecosystems, environment, river discharge, rivers, spatial analysis, spatial characteristics of habitats, streamflow, watershed, Fewer tags