Project Information

Title: SEA: Juvenile Herring Growth and Habitat Partitioning 96320-T

Project Year and Number: 1996: 96320-T

Other Fiscal Years and Numbers for this Project: 1999: 99320-T-CLO, 1999: 99320-T-SUPP-CLO, 1998: 98320-T, 1998: 98320-T-SUPP, 1997: 97320-T, 1995: 95320-T

Principal Investigator (PI): Brenda Norcross (University of Alaska Fairbanks)

Managing Agency: ADFG

Assisting Personnel: Evelyn Brown, Robert Foy, Michele Frandsen, Jody Seitz, Kevin Stokesbury

Research Location: Prince William Sound

Restoration Category: Research

Injured Resources Addressed: Pacific Herring

Abstract: This project would investigate what may be causing the failure of herring runs in PWS by investigating the dynamics of larval and juvenile herring. The proposed project, together with other investigations being undertaken as part of the SEA program, would attempt to describe the relative importance of zooplankton abundance, oceanic conditions, habitat requirements, and density dependent predation in determining large fluctuations in herring abundance.


Proposal: Not Available

Reports:
Annual Report FY96: View (2,709 KB)
Final Report: See Project 99320-T-SUPP-CLO

Publications from this Project: None Available

Datasets:
EVOSTC Data Archive: The data collected by this project can be broken into 5 major groups: 1) Broadscale aerial survey mapping in Prince William Sound of forage fish schools, gulls, marine mammals, tide rips and jellyfish from May through August. In 1995 many of the same variables were mapped in parts of the outer Kenai as well. 2) Broadscale acoustic mapping of fish aggregations mainly within Prince William Sound for October 1995, March 1996 and July 1996. Validation with nearshore and offshore seines, mid-water and surface trawls, long-lines and, to a lesser extent, gillnets. 3) Population sampling of herring (age, weight, length, and energetic content) from selected sites around the Sound and stomach sampling of juvenile herring and pollock over a 24 hour period processed to genus or family level (of prey item). 4) Nearshore zooplankton sampling over 24 hour period in selected sites collected with both vertical nets and tucker trawls. 5) Archived, but unprocessed otoliths, from population collections of juvenile herring from selected sites. ASCII files and database tables Availability: Available to collaborating researchers and managers and through the scheduled release of the SEA database.