October 5, 2015 — The following was released by the University of Rhode Island:

Size-based methods to understand marine ecosystems, fisheries potential and impacts

by Simon Jennings, Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK

Friday 9 October at Noon in the Coastal Institute Auditorium Narragansett Bay Campus

Abstract: Body-size-based methods provide insights into marine systems and fisheries impacts that complement those from more complex species-based analyses. These methods are applicable to many systems since they have relatively low parameter demands and are based on established ecological principles. However, they may omit structures, processes and outliers that “matter” to science or fishery managers. Drawing on examples from highly abstracted system models through to tactical models being considered for fisheries management, I review the strengths and weaknesses of size-based methods and challenge them with data. Having highlighted and sought to address some of the uncertainties, I examine what size-based methods can contribute to predicting global fish production, biomass and catch potential, biodiversity, fish contributions to biogeochemical cycles, climate change effects and tradeoffs between fisheries yields and impacts.