link to AFSC home page
Mobile users can use the Site Map to access the principal pages

link to AFSC home page link to NMFS home page link to NOAA home page

EMA: Southeast Alaska Coastal Monitoring

ABL Home
Ecosystem Monitoring & Assessment
BASIS
Gulf of Alaska Ecosystem Assessment
Chukchi Sea Ecosystem Assessment
Salmon Ocean Ecology & Bycatch Analysis:
Anadromous Fish
Pink Salmon Forecasting
Southeast Alaska Coastal Monitoring
Autonomous Underwater Vehicles
Oceanography
Program Activities:
History
Personnel
Publications
Posters
Data Sets
SECM
Measuring water properties with a conductivity-temperature-depth profiler
SECM
Sampling zooplankton with a tandem Bongo net in Icy Strait
SECM
Processing a fish catch after a surface trawl haul onboard a chartered vessel

Research conducted by EMA's Southeast Alaska Coastal Monitoring (SECM) project focuses on the study of juvenile salmon in the coastal waters of the Gulf of Alaska ecosystem. (Watch the streaming "What we do" video below.) This Auke Bay Laboratories project addresses key objectives of the NOAA Fisheries Strategic Plan and international science programs including the North Pacific Anadromous Fish Commission (NPAFC) and the (Pacific Salmon Commission) Northern Fund. Ecosystem metrics from SECM research are used to develop indexes and stock assessments for NOAA's annual Ecosystem Consideration Report.

Primary SECM goals are to:

  • Understand the early marine ecology and distribution of juvenile salmon and associated species
  • Build time series of oceanographic and ecological indices for the coastal waters of Southeast Alaska
  • Identify factors affecting salmon productivity (e.g., climate change, prey, abundance, and predators)
  • Produce data sets to evaluate hatchery and wild stock interactions, and forecast regional adult salmon returns

SECM research was initiated in the spring of 1997, just prior to the onset of a strong El Niņo event, and has continued annually. SECM sampling occurs around Icy Strait (58°N, 136°W) in the northern region and have been sustained for 20 years. This is a principal seaward migration corridor for salmon both juveniles and returning adults.

SECM researchers have compiled a multi-year time series of biophysical data associated with juvenile salmon culled from monthly sampling intervals in May, June, July, and August. Juvenile salmon and ecologically-related species are sampled with a surface trawl and associated oceanographic measurements are taken. This time series includes data on:

  • Temperature and salinity profiles
  • Surface nutrients and chlorophyll
  • Zooplankton (upper 20-m and integrated)
  • Size, abundance, and origin of salmon
  • Potential predators of juvenile salmon
Interannual variability of late spring and summer temperatures in the upper 20-m water column of Icy Strait, 1997-2016
Interannual variability of late spring and summer temperatures in the upper 20-m water column of Icy Strait, 1997-2016.

Some of these biophysical data are being used to forecast pink salmon returns to Southeast Alaska and to evaluate recent trends in commercial salmon harvest and ocean survival within the region. These analyses also explore the impact of large-scale, climate-driven processes on salmon year-class strength.


Average catches of juvenile salmon per surface trawl haul in Icy Strait, Southeast Alaska in June, July, and August since 1997. Catch numbers are untransformed and vessel calibrated to 20-minutes of trawling time
Average catches of juvenile salmon per surface trawl haul in Icy Strait, Southeast Alaska in June, July, and August since 1997. Catch numbers are untransformed and vessel calibrated to 20-minutes of trawling time

SECM Survey Reports:
(NPAFC documents)

1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015

 

Contacts:
Andrew Gray, Emily Fergusson, Jim Murphy, Jordan Watson
Auke Bay Laboratories
Alaska Fisheries Science Center, NOAA Fisheries

Ted Stevens Marine Research Institute
17109 Pt Lena Loop Rd
Juneau AK 99801
(907) 789-6047
Andrew.Gray@noaa.gov


            | Home | Site Map | Contact Us | Webmaster | Privacy | Disclaimer | Accessibility | Print |           doc logo