BCO-DMO BlogDataset: ECOTRAN code and static scenarios
Data Citation:
Brink, K. H., Ruzicka, J., Solow, A., Steele, J., Gifford, D. J. (2019) Coastal shelf trophic structure and energy flow model from the Northern California Current, Georges Bank, the Gulf of Alaska, and the North Sea (Food Webs and Physical Contexts project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2019-02-21 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/546765 [access date]
Terms of Use
This dataset is licensed under Creative Commons Attribution 4.0.
If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.
Project:
Analysis of Continental Shelf Ecosystems: Food Web Structure and Functional Relations
(Food Webs and Physical Contexts)
Lead Principal Investigator:
Kenneth H. Brink (Woods Hole Oceanographic Institution, WHOI)
Principal Investigator:
James Ruzicka (Oregon State University, OSU-HMSC)
Co-Principal Investigator:
Andrew Solow (Woods Hole Oceanographic Institution, WHOI)
John Steele (Woods Hole Oceanographic Institution, WHOI BCO-DMO)
Scientist:
Dian J. Gifford (University of Rhode Island, URI-GSO)
Contact:
James Ruzicka (Oregon State University, OSU-HMSC)
BCO-DMO Data Manager:
Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)
Version:
2
Version Date:
2019-02-21
Restricted:
No
Validated:
Yes
Current State:
Final with updates expected
Coastal shelf trophic structure and energy flow model from the Northern California Current, Georges Bank, the Gulf of Alaska, and the North Sea (Food Webs and Physical Contexts project)
Abstract:
End-to-end models were constructed to examine and compare the trophic structure and energy flow in coastal shelf ecosystems of four US Global Ocean Ecosystem Dynamics (GLOBEC) study regions: the Northern California Current, the Central Gulf of Alaska, Georges Bank, and the Southwestern Antarctic Peninsula. High-quality data collected on system components and processes over the life of the program were used as input to the models. Although the US GLOBEC program was species-centric, focused on the study of a selected set of target species of ecological or economic importance, we took a broader community-level approach to describe end-to-end energy flow, from nutrient input to fishery production. We built four end-to-end models that were structured similarly in terms of functional group composition and time scale. The models were used to identify the mid-trophic level groups that place the greatest demand on lower trophic level production while providing the greatest support to higher trophic level production. In general, euphausiids and planktivorous forage fishes were the critical energy-transfer nodes; however, some differences between ecosystems are apparent. For example, squid provide an important alternative energy pathway to forage fish, moderating the effects of changes to forage fish abundance in scenario analyses in the Central Gulf of Alaska. In the Northern California Current, large scyphozoan jellyfish are important consumers of plankton production, but can divert energy from the rest of the food web when abundant.
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