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RECA: Recruitment Energetics

ABL Home
Recruitment, Energetics, & Coastal Assessment
Recruitment Energetics:
Fish Processing and Food Habits
Proximate Composition
Coastal Assessment
Division Activities:
Data Sets
Arctic cod and isopods from nearshore trawl
 Arctic cod and isopods from nearshore trawl
Juvenile Pacific herring
 Juvenile Pacific herring

Our research lab applies methods of analytical biochemistry to understand the structure and function of marine food webs. Our studies assess factors underlying energy allocation strategies and nutritional quality of forage species using lipid class and proximate analysis. We employ fatty acid analysis as a means of understanding patterns of energy flow in large marine ecosystems such as the Arctic, Bering Sea and Gulf of Alaska. Our analysis of energy phenology and trophic linkages is aimed at predicting the consequences of climate change on ecosystem functions

Our work proceeds from the central idea that juvenile fish need to grow rapidly and store energy if they are to survive winter, which is a period of resource depletion. These needs are most acute for those organisms or life stages that depend directly on the annual production cycle particularly at high latitudes. The resulting seasonal flux in energy content of species has a profound influence on their recruitment and nutritional value to their predators. This bioenergetic approach allows us to understand how temperature and forage quality influence the productivity of high latitude marine ecosystems

Ron Heintz
Auke Bay Laboratories
Alaska Fisheries Science Center, NOAA Fisheries

Ted Stevens Marine Research Institute
17109 Pt Lena Loop Rd
Juneau AK 99801
(907) 789-6058

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