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Transcript
No paper
available
Theme:
Special Sessions
Session:
TuG2 - Economic effects of climate change on fisheries 2
Title:
Climate Change, ENSO Frequency and Intensity, and the Gulf
of Mexico Headboat Fishery
Author(s):
David Carter , David Letson
Abstract:
Recent results from a vector error correction (VEC) analysis indicate
that El Niño-Southern Oscillation (ENSO) events appear to affect both
red snapper landings and effort in the Gulf of Mexico headboat fishery
(Carter and Letson 2005). A key finding is that the outcome of policy
changes can vary depending on ENSO conditions. This suggests that
climate change could have an impact on the effectiveness of fishery
regulations. To examine this assertion, we use a VEC model to
simulate the changes in headboat effort and red snapper landings
expected from potential ENSO frequency and strength shifts. The
assumptions regarding the ENSO scenarios are based on work by
Chen et al. (2001) and Timmermann et al. (1999). Specifically, we
assume the frequency of both the El Niño and La Niña phases would
increase, while the Neutral phase frequency would be reduced, and
that stronger events such as 1982 and 1997 would become more
likely. We construct a Markov chain of ENSO years consistent with
these assumptions and use it to simulate changes in the fishery. The
ENSO scenarios are simulated with and without regulatory changes to
evaluate the sensitivity of policy outcomes to climate change.
Carter, D.W. and D. Letson. 2005. 'Effort Response, Harvest, Climate,
and the Economy in the Gulf of Mexico Recreational Red Snapper
Fishery.' NOAA/SEFSC SSRG Working Paper Series, Miami, Florida
USA.
Chen, C.C., B.A. McCarl, and R.M. Adams. 2001. 'Economic
Implications of Potential ENSO Frequency and Strength Shifts.'
Climatic Change 49:147-159.
Timmermann, A., J. Oberhuber, A. Bacher, M. Each, M. Latif, and E.
Roeckner. 1999. 'ENSO Response to Greenhouse Warming.' Nature
398: 694-697.