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Coastal and Estuarine Research Federation 20th Biennial ConferenceEstuaries and Coasts in a Changing World1-5 November 2009, Portland, Oregon, USA

Topic: Fisheries

SCI-206: Fish and Fisheries (Poster Only)

SCI-029: Dredging and Construction Impacts on Critical Life Stages of Fish.

Conveners: Kathryn Ford (kathryn.ford@state.ma.us) and Tay Evans (tay.evans@state.ma.us)

This session is designed to focus on construction impacts to marine fisheries resources. Presenters are asked to examine how dredging and construction cause direct or indirect mortality (including habitat impacts) to fish.  Some topics that are of interest include the lethal and sublethal effects of suspended sediment on marine fisheries species, experiments on the effects of siltation on eggs, larvae or juvenile life stages, and recommended species specific threshold levels for environmental stressors such as turbidity and noise. Dredging and construction methodologies designed to avoid impact, and studies that illustrate their effectiveness, are also solicited.

SCI-102: Ecology of Salmon in Changing Coastal Waters.

Convener: Laurie Weitkamp (Laurie.Weitkamp@noaa.gov)

Many research programs currently study the ecology of Pacific (Oncorhynchus spp.) and Atlantic salmon (Salmo salar) in coastal waters. This session will present recent findings from these programs in both the Pacific and Atlantic oceans, with a focus on how salmon at all stages of coastal residency respond to changing coastal conditions. Comparing the response of salmon to dynamic coastal ecosystems will increase our understanding of the common factors affecting salmon, but also suggest how they might respond to future ocean conditions. Lessons learned from salmon also likely apply to other, less-intensively studied coastal species.

SCI-058: Forage Fish in a Changing Climate.

Conveners: Marisa Litz (litzm@onid.orst.edu) and Robert Emmett (robert.emmett@noaa.gov)

Forage fish are an abundant and critical component of nearshore and estuarine environments. As their name implies, forage fish provide important ecosystem services by transferring energy from primary and secondary producers to higher trophic levels, including predatory fish, birds and mammals. Over multi-decadal scales, forage fish abundances have been shown to fluctuate in response to variable ocean conditions. The vitality of forage fish resources can also be a valuable indicator of coastal marine productivity and health.

SCI-011: Linking Land-use, Environmental Gradients and Anadromous Fish Behavior.

Conveners: Shaun Clements (shaun.clements@oregonstate.edu), Carl Schreck (carl.schreck@oregonstate.edu) and David Noakes (david.noakes@oregonstate.edu)

Residence in, or passage through, the estuary represents a critical stage in the life history of many anadromous fish. Evidence suggests that conditions in the estuary may play a significant role in determining the success of various life history strategies. In this session, we invite participants to address the role of environmental gradients on the behavior and survival of anadromous fish in the estuary. Topics may include: the effect of the environment on predator and prey interactions; a discussion on the likely impacts of rapid environmental change on estuarine use by anadromous fish; changes in life history structure of populations as a result of environmental change; and the link between land-use practices, the estuarine environment, and the foraging and habitat use of anadromous fish.

SCI-005: Salmon Response to Natural and Anthropogenic Changes in North Pacific Estuaries.

Conveners: Daniel Bottom (Dan.Bottom@noaa.gov), Charles Simenstad (simenstd@u.washington.edu) and Kurt Fresh (Kurt.Fresh@noaa.gov)

Decline of salmon populations across much of their distribution has increased interest in the estuarine ecology of Pacific salmon and the effects of estuarine habitat changes on population viability. With the help of new analytical techniques - otolith microchemistry, stable isotope analyses, genetic stock identification, tagging technologies and telemetry, and hydrodynamic modeling - salmon ecology has progressed significantly. Many researchers now are using these techniques to investigate estuarine habitat changes and their effects on salmon performance and on the life history diversity and resilience of salmon populations. The session will compare effects of estuarine changes on: (1) salmon rearing opportunities and habitat associations; (2) salmonid food webs and performance (e.g., consumption, residency and growth); and (3) the life history diversity and resilience of salmon populations. We will discuss the implications of these changes for estuary restoration and salmon recovery efforts in different North Pacific regions.

SCI-086: Commercially Important Decapods.

Convener: Alan Shanks (ashanks@uoregon.edu)

Why are some fisheries sustainable (i.e., despite strong fishing pressure we have not seen a population crash) while other fisheries are unsustainable (i.e., we have witnessed a population crash). By looking at the life history characteristics of species coupled with the management tools used in their fishery can we develop rules of thumb to guide fisheries management?

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Conference Management
5400 Bosque Blvd Ste 680 · Waco, TX, 76710
Ph: (254) 776-3550 · Fax: (254) 776-3767