Kerim Aydin

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  • Sandra Lowe, James Ianelli, Mark Wilkins, Kerim Aydin, Robert Lauth, Ingrid Spies
  • 2006
Executive Summary Summary of Major Changes Relative to the November 2005 SAFE report, the following substantive changes have been made in the assessment of Atka mackerel. Changes in the Input Data 1. Catch data were updated and catch assumed for projections were set equal to ABC, whereas projections in last year's assessment used constrained TAC levels(More)
The Chukchi Sea is a seasonally ice-covered, marginal Arctic-shelf sea that possesses both large petroleum reserves and abundant biological communities, including migratory mammals and seabirds. We developed a mass balance food web model for the eastern Chukchi Sea to evaluate the trophic structure of this ecosystem and to compare food web properties of the(More)
Steller Sea Lions, Pacific cod, and Atka mackerel are part of a complex, interrelated food web in the Aleutian Islands (Fig. 1). The effects of fishing policy changes, therefore, should be evaluated in both single-species and multispecies contexts. In particular, Atka mackerel are a central species in the Aleutian Islands food web, serving as both predator(More)
  • Sandra Lowe, James Ianelli, Mark Wilkins, Kerim Aydin, Robert Lauth, Ingrid Spies
  • 2008
Executive Summary Summary of Major Changes Relative to the November 2007 SAFE report, the following substantive changes have been made in the assessment of Atka mackerel. Changes in the Input Data 1. Fishery catch data were updated. 2. The 2007 fishery age composition data were included. 3. Survey biomass estimates from the southern Bering Sea were(More)
  • James N Ianelli, Taina Honkalehto, Steve Barbeaux, Stan Kotwicki, Kerim Aydin, Neal Williamson
  • 2008
Executive Summary This chapter covers the Eastern Bering Sea (EBS) region—the Aleutian Islands region (Chapter 1A) and the Bogoslof Island area (Chapter 1B) are presented separately. Summary of major changes Changes in the input data The primary changes include: • The 2012 NMFS summer bottom-trawl survey (BTS) abundance at age estimates are included. • The(More)
  • James N Ianelli, Steve Barbeaux, Taina Honkalehto, Stan Kotwicki, Kerim Aydin, Neal Williamson
  • 2006
Executive Summary The focus of this chapter is on the Eastern Bering Sea (EBS) region. The Aleutian Islands region (Chapter 1A) and the Bogoslof Island area (Chapter 1B) are presented as separate sections. Changes in the input data The 2006 NMFS summer bottom-trawl survey (BTS) abundance at age estimates were computed and included for this assessment.(More)
  • Olav A Ormseth, Mike Canino, Liz Conners, Sandi Neidetcher, Peter Munro, Sarah Gaichas +1 other
  • 2008
Executive summary The NPFMC is considering action that would treat the eastern Bering Sea and Aleutian Islands separately for the purposes of Pacific cod management. This report is intended to summarize existing biological information on Pacific cod that may be useful in evaluating this action. The following conclusions may be useful and are described in(More)
of Major Changes Relative to the November edition of last year's BSAI SAFE report, the following substantive changes have been made in the Pacific cod stock assessment. Changes in the Input Data 1) Catch data for 2006 were updated, and preliminary catch data for 2007 were incorporated. 2) Commercial fishery size composition data were recompiled for the(More)
  • Martin Dorn, Kerim Aydin, Steven Barbeaux, Michael Guttormsen, Bernard Megrey, Kally Spalinger +1 other
  • 2008
of major changes Relative to last year's assessment, the following changes have been made in the current assessment. Assessment model The age-structured assessment model developed using ADModel Builder (a C++ software language extension and automatic differentiation library) and used for assessments in 1999-2007 was used again for this year's assessment.(More)
We applied ecosystem energetics and foraging theory to characterize the spatial extent of the Pribilof Archipelago ecosystem, located in the southeast Bering Sea. From an energetic perspective, an ecosystem is an area within which the predatory demand is in balance with the prey production. From a foraging perspective, an ecosystem boundary should at least(More)