SEMINAR: Special CIMAS Seminar, Rodrigo H. Bustamante, CSIRO, Monday, Oct. 24, Noon, SLAB

[Marva Loi <mloi@rsmas.miami.edu>]

Special CIMAS SEMINAR

 

Rodrigo H. Bustamante (presenter),
Cathy M. Dichmont, Nick Ellis,

Shane P. Griffiths, Wayne A. Rochester,
Aijun R. Deng, and Elisabetta Morello

 

CSIRO Marine and Atmospheric Research

Ecosciences Precinct

Brisbane, Australia

 

“A Spatially-explicit Management Strategy Evaluation
Framework for the Northern Prawn Fishery”

 

 

Monday, October 24, 2011, NOON

 

SLAB SEMINAR ROOM (SA103)

Science and Administration Building, RSMAS

 

ABSTRACT

 

We present an operational spatially-explicit management simulation framework that addresses quantitatively multiple conservation, economics, and fisheries management objectives. We integrate bioeconomic stock and ecological risk assessment models with the affected foodweb, together with the simulated effects of trawling and biophysical distribution models, all interacting in a double‐adaptive cycle form of a spatial management strategy evaluation framework (sMSE). The sMSE evaluates scenarios of static and dynamic closures and Marine Protected Areas (MPAs). These closures did not affect fisheries management targets and at current fishing effort levels, the trawling‐induced changes are small, with little variation across a range of performance metrics. These changes increase as fishing effort increases. All scenarios exhibited high spatial variability, with most effects on fishing‐affected habitats. These effects varied regionally and the affected biota showed positive and negative changes. Depending on the management objectives, the scenarios can act as best, nil, and worst‐ case scenarios for biotic group performance. For threatened and endangered species, closures could increase and decrease the biomass of such taxa, largely due to movements and trophic interactions. Comparing across simulated scenarios, the greater the fishing closures, the more responses as whole and the coarser the spatial scales, the less changes detected. These results confirm the need for spatial information at the same spatial scale as the impacts. No single scenario satisfied all or most management objectives. This work provide a front‐end example of the use of biophysical modelling tools for the implementation of an ecosystem‐based approach for the conservation management of Australia’s marine ecosystems.

-- 
Marva P. Loi
Administrative Assistant
Cooperative Institute for Marine and Atmospheric Science
Rosenstiel School of Marine and Atmospheric Science
University of Miami
4600 Rickenbacker Causeway
Miami, FL 33149-1031
Tel: 305-421-4159
Fax: 305-421-4999
Email: mloi@rsmas.miami.edu