Northern Gulf of Alaska - United States of America
Northern Gulf of Alaska
United States of America
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.
General Characteristics, Purpose, History
Our research team investigates the features, mechanisms, and processes that drive NGA ecosystem production and foster its resilience.
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.
Affiliation and Network Specific Information