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The Gulf of Alaska is one of the most productive marine ecosystems on Earth, supporting salmon fisheries that alone provide nearly $1 billion per year in economic benefits to Southeast Alaska. Glaciers are central to many of the area’s natural processes and economic activities, but the rates of glacier loss in Alaska are among the highest on Earth, with a 26-36 percent reduction in total volume expected by the end of the century. This project brought together scientists and managers at a workshop to synthesize the impacts of glacier change on the region’s coastal ecosystems and to determine related research and monitoring needs. Collected knowledge shows that melting glaciers are expected to have cascading effects...
Abstract (from http://bioscience.oxfordjournals.org/content/65/5/499): Rates of glacier mass loss in the northern Pacific coastal temperate rainforest (PCTR) are among the highest on Earth, and changes in glacier volume and extent will affect the flow regime and chemistry of coastal rivers, as well as the nearshore marine ecosystem of the Gulf of Alaska. Here we synthesize physical, chemical and biological linkages that characterize the northern PCTR ecosystem, with particular emphasis on the potential impacts of glacier change in the coastal mountain ranges on the surface–water hydrology, biogeochemistry, coastal oceanography and aquatic ecology. We also evaluate the relative importance and interplay between interannual...
Streamwater dissolved oxygen (DO) concentrations are driven by interacting physical and biotic parameters. Future DO depletion events in small, coastal salmon streams are therefore likely to be driven by changes in hydrology in addition to atmospheric warming. We measured DO, temperature, discharge and spawning salmon abundance in upstream (reference reach) and downstream salmon bearing reaches of four streams in southeast Alaska to determine how multiple physical and biotic factors interact to control streamwater DO. Stream temperature ranged from 5.1 to 15.8 °C and fell within the optimum range that is considered favorable for salmon physiology. Concentrations of DO ranged from 2.8 to 12.3 mg/L, with concentrations...
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The Alaska Coastal Rainforest Center (ACRC) held a symposium titled “Coastal Temperate Rainforests: Integrating Science, Resource Management, and Communities” on April 17‐19, 2012, in Juneau, Alaska. The three day event included an all‐day field trip to Berner’s Bay (north of Juneau), an international plenary, three concurrent sessions, two lunch‐time keynote speakers, an evening open public reception, an evening science social, and an evening banquet.The list of speakers may be found in the attached program, or at http://acrc.alaska.edu. To highlight a few of the keynotes speakers, Dr. Peter Kareiva (The Nature Conservancy) spoke at the opening public reception and the banquet, Dr. Kirk Johnson (Denver Museum of...
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The Situk River is among the most productive resource in Alaska, with nine native fish species and 10 times the density of juvenile coho salmon than any other Southeast Alaskan watershed. The associated fisheries in the Situk River and its adjoining estuary drive a $2 million economy for the community of Yakutat (population 600), with 89 percent of the households harvesting salmon for subsistence purposes. The Yakutat foreland area that encompasses the Situk River watershed is a vast landscape of low gradient drainages with forested mosaics of side channels and pools that are responsible for up to 80 percent of coho salmon production. These highly productive aquatic habitats are sensitive to even small shifts in...
Abstract (from http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0132652): Climate warming is likely to cause both indirect and direct impacts on the biophysical properties of stream ecosystems especially in regions that support societally important fish species such as Pacific salmon. We studied the seasonal variability and interaction between stream temperature and DO in a low-gradient, forested stream and a glacial-fed stream in coastal southeast Alaska to assess how these key physical parameters impact freshwater habitat quality for salmon. We also use multiple regression analysis to evaluate how discharge and air temperature influence the seasonal patterns in stream temperature and DO. Mean daily...
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Webinar 2015: Alaska’s National Hydrography Dataset (NHD), the digital data layer that depicts the location of lakes and streams, was originally created from the 1950’s topographic maps. With funding support from the LCC Network, this project focused on establishing a statewide framework to improve the hydrography mapping and stewardship in Alaska. This will be achieved through the creation of a statewide system to make digital mapping data updates accessible and affordable, and through the creation of a statewide hydrography mapping coordinator position to synchronize updates and guide hydrography mapping development. This framework will allow agencies and organizations to greatly improve their hydrography mapping...
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Webinar 1: Alaska’s National Hydrography Dataset (NHD), the digital data layer that depicts the location of lakes and streams, was originally created from the 1950’s topographic maps. With funding support from the LCC Network, this project focused on establishing a statewide framework to improve the hydrography mapping and stewardship in Alaska. This will be achieved through the creation of a statewide system to make digital mapping data updates accessible and affordable, and through the creation of a statewide hydrography mapping coordinator position to synchronize updates and guide hydrography mapping development. This framework will allow agencies and organizations to greatly improve their hydrography mapping...
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The dataset contains the recorded locations of amphibians collected in Southeast Alaska from 1867 to 2002. The records were compiled from 15 university and museum collections in the US and Canada. The data contain records for the following species: Northwestern Salamander, Long-toed Salamander, Roughskin Newt, Western Toad, Pacific Chorus Frog, Columbia Spotted Frog, Wood Frog, and the Red-legged Frog.
Tags: Alaska, Alaska, Ambystoma gracile, Ambystoma gracile, Ambystoma macrodactyum, All tags...
Abstract: We measured stream temperature continuously during the 2011 summer run-off season (May through October) in nine watersheds of Southeast Alaska that provide spawning habitat for Pacific salmon. The nine watersheds have glacier coverage ranging from 0% to 63%. Our goal was to determine how air temperature and watershed land cover, particularly glacier coverage, influence stream temperature across the seasonal glacial meltwater hydrograph. Multiple linear regression models identified mean watershed elevation (related to glacier extent) and watershed lake coverage (%) as the strongest landscape controls on mean monthly stream temperature, with the weakest (May) and strongest (July) models explaining 86% and...
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This strategic plan is a guiding framework that lays out the objectives and goals for Alaska Hydrology Technical Working Group and AK Hydro to accomplish high-resolution statewide hydrography updates that meet national mapping standards and local partners’ needs.The strategic plan identifies five key objec-tives: 1) Map Alaska’s Water 2) Support Alaska’s Hydrography Needs 3) provide Hydrography Services 4) establish a Sus-tainable Hydrography future and 5) allow for Data Integration. These strategic objectives will give AK Hydro and AHTWG success in meeting the mission to efficiently serve the hydrography needs of Alaska. The objectives as-sist in mapping the surface water of Alaska, meeting NHD standards, securing...
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The Province of British Columbia, Ministry of Forests, Lands, & Natural Resource Operations, in partnership with Simon Fraser University and the Alaska Coastal Rainforest Center, led a third workshop to develop cross-boundary geospatial and climate data sets in support of regional conservation applications across NPLCC international boundaries. The workshop will provide opportunities for communicating and discussing priorities for the exchange, development and unification of geospatial and climate datasets.
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: AK-0, Academics & scientific researchers, Alaska, B.C. North Cascades, B.C. North Cascades, All tags...
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The Tongass National Forest has identified resources that are important to stakeholders and vulnerable to climate-related stressors. Cooperators will review an action plan and convene a workshop to be held in Southeast Alaska in 2016. The workshop will foster collaboration between scientists, managers, and stakeholders. Workshop goals include: sharing information about climate-related stressors and effects on NPLCC Priority Resources in the Tongass National Forest; developing strategic priorities for improving understanding, reducing risks, and increasing adaptive capacity and resilience; coordinating support for increasing knowledge and informing resource managers
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Alaska is an expansive state with abundant water resources. The complex landscape is defined by water and ice, but Alaska lacks quality mapping of its surface water features. The Alaska Hydrography Technical Working Group and Alaska Hydrography Database have worked to establish the Alaska Hydrography Strategic Plan to promote and guide a core mission to efficiently serve the current and future hydrography needs of Alaska for the next five years. This work will update the state’s hydrography in the National Hydrography Database from its current condition to meet national 1:24,000-scale standards. This work has focused on coordination of hydrography needs with partners and land managers, planning for the future hydrography...
    map background search result map search result map From Icefield to Ocean: Glacier Change Impacts to Alaska’s Coastal Ecosystems Amphibian Observations Cross Boundary Data Integration III- Landcover Data Data Integration Workshop in Support of the Coastal Temperate Rainforest of Southeast Alaska and British Columbia Geospatial and climatic data layers for coastal and temperate rainforest biome Final NPLCC Project Report - NPLCC Cross-Border Final Report & Appendices 2014 Data Integration Workshop in Support of the Coastal Temperate Rainforest of Southeast Alaska and British Columbia Final Report Coastal Temperate Rainforest Symposium Coastal Temperate Rainforest Symposium Final Report 2014 Webinar for Bringing Alaska's Hydrology into the 21st Century 2015 Webinar: Bringing Alaska's Freshwater Hydrography into the 21st Century Bringing Alaska’s Freshwater Hydrography into the 21st Century Alaska Hydrography Strategic Plan: Mapping Alaska's Water 2017-2021 Final Report: Climate Change in the Tongass National Forest Fostering Strategic Collaboration and Informing Sustainable Management of Priority Resources Community Engagement in a Stream-network Assessment of Salmon Thermal-habitat in the Situk River Watershed of Yakutat, Alaska Coastal Temperate Rainforest Symposium Coastal Temperate Rainforest Symposium Final Report Geospatial and climatic data layers for coastal and temperate rainforest biome Final NPLCC Project Report - NPLCC Cross-Border Final Report & Appendices 2014 Data Integration Workshop in Support of the Coastal Temperate Rainforest of Southeast Alaska and British Columbia Final Report Cross Boundary Data Integration III- Landcover Data Data Integration Workshop in Support of the Coastal Temperate Rainforest of Southeast Alaska and British Columbia Community Engagement in a Stream-network Assessment of Salmon Thermal-habitat in the Situk River Watershed of Yakutat, Alaska Final Report: Climate Change in the Tongass National Forest Fostering Strategic Collaboration and Informing Sustainable Management of Priority Resources Amphibian Observations From Icefield to Ocean: Glacier Change Impacts to Alaska’s Coastal Ecosystems 2014 Webinar for Bringing Alaska's Hydrology into the 21st Century 2015 Webinar: Bringing Alaska's Freshwater Hydrography into the 21st Century Bringing Alaska’s Freshwater Hydrography into the 21st Century Alaska Hydrography Strategic Plan: Mapping Alaska's Water 2017-2021