Northern Gulf of Alaska - United States of America

Basic Information
Site Name
Northern Gulf of Alaska
Short name
NGA
Country
United States of America
Keywords
inorganic nutrients
iron
Marine habitats
oceanography
phytoplankton
primary production
zooplankton
Site Description
In the NGA study area, the biological community is highly productive. The lower levels of the food chain (phytoplankton and zooplankton) support the iconic fish, crabs, seabirds, and marine mammals of Alaska. Large increases in phytoplankton during the spring and sustained production during the summer support zooplankton that transfer energy up the food chain. Substantial amounts of this organic matter also sink to feed animals on the sea bottom.
Last modified
2019-12-17 02:12:11
General Characteristics, Purpose, History
Site Status
existing
Year Established
2017
Purpose
Our research team investigates the features, mechanisms, and processes that drive NGA ecosystem production and foster its resilience.
History
1970: Oceanographic station GAK1 was established, with monthly sampling of temperature and salinity (via CTD) that continues to this day. In the early 1970s, the Seward Line was established from GAK1 to past the continental shelf break, over 150 nautical miles. 1997–2004: The US GLOBEC program (NSF/NOAA) supported intense observational and process studies of physics, chemistry, and biology, while EVOSTC funded the monthly CTD time series and consecutive moorings at GAK1. 2005: The North Pacific Research Board began funding a streamlined Seward Line program, with expanded observations supported by NPRB’s Integrated Ecosystem Research Program during 2011 and 2013. 2010–present: A consortium of NPRB, NOAA, and AOOS funds sampling. EVOSTC (through Gulf Watch Alaska) joined in 2012. Each additional member of the funding consortium has expanded the Seward Line sampling effort. 2017: The Seward Line program was selected by NSF as an important LTER site, representative of the ecosystem in the northern Gulf of Alaska.
Photos
The NGA site within the North Pacific
Geographic
Size
1000.00ha
Elevation (average)
0.00msl
Elevation (min)
-4300.00msl
Elevation (max)
0.00msl
Affiliation and Network Specific Information
Affiliation
ILTERThis site is a verified "ILTER" member.
US LTER (LTER_NGA)This site is a verified "US LTER" member.
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