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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...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2012,
Alaska,
Alaska CASC,
Basins,
CASC, All tags...
Climate Change,
Completed,
Drainage,
Drainage System,
Glacier Change,
Glaciers and Permafrost,
Glaciers and Permafrost,
Gulf of Alaska,
Hydrography,
Projects by Region,
Science Tools for Managers,
Science Tools for Managers,
Sea-Level Rise and Coasts,
Sea-Level Rise and Coasts,
State of the Science,
State of the Science,
Water, Coasts and Ice,
Water, Coasts and Ice,
Watershed,
Y.T.,
Yukon,
Yukon Territory, Fewer tags
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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...
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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...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: AK-0,
Academics & scientific researchers,
Alaska,
B.C.,
Conservation NGOs, All tags...
Federal resource managers,
Informing Conservation Delivery,
LCC Network Science Catalog,
NPLCC,
Priority B. Changes in air temperature and precipitation on forests,
Report,
Socio-economics/Ecosystem Services,
Traditional Ecological Knowledge,
climate adaptation,
climate change,
completed,
product,
traditional ecological knowledge, Fewer tags
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Rates of glacier loss in the northern Pacific coastal temperate rainforest (PCTR) are among the highest on Earth. These changes in glacier volume and extent will affect the flow and chemistry of coastal rivers, as well as the nearshore marine ecosystem of the Gulf of Alaska (GOA). Runoff from glaciers accounts for about half of the land-to-ocean movement of freshwater into the GOA, strongly influencing the freshwater and marine ecosystems along the coast. Runoff from glaciers, for example, significantly impacts the water temperature and clarity of aquatic habitats, which are important conditions for salmon reproduction. Moreover, runoff from glaciers along the GOA is an important factor in the structure of the...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2011,
2012,
2012,
Alaska,
Alaska CASC, All tags...
CASC,
Climate Change,
Completed,
Drainage,
Drainage System,
Forests,
Forests,
Glaciers and Permafrost,
Glaciers and Permafrost,
Hydrography,
Landscapes,
Landscapes,
Projects by Region,
Rainforest,
Sea-Level Rise and Coasts,
Sea-Level Rise and Coasts,
Water, Coasts and Ice,
Water, Coasts and Ice,
Watershed,
Y.T.,
Yukon,
Yukon Territory, Fewer tags
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