Angler Heterogeneity and Species-Specific Demand for Recreational Fishing in the Southeast United...
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Angler Heterogeneity and Species-Specific Demand for Recreational Fishing in the Southeast United States* Tim Haab (Ohio State University) Rob Hicks (College of William and Mary) Kurt Schnier (University of Rhode Island) John Whitehead (Appalachian State University) AFS Annual Meeting, Lake Placid, NY, Sept. 10-14, 2006 *MARFIN #NA06NMF4330055
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Transcript of Angler Heterogeneity and Species-Specific Demand for Recreational Fishing in the Southeast United...
Angler Heterogeneity and Species-Specific Demand for Recreational Fishing in the Southeast United States*
Tim Haab (Ohio State University)Rob Hicks (College of William and Mary)Kurt Schnier (University of Rhode Island)John Whitehead (Appalachian State University)
AFS Annual Meeting, Lake Placid, NY, Sept. 10-14, 2006
*MARFIN #NA06NMF4330055
Targeting behavior Compare various
angler targeting models
• single-species• aggregates of related
species• all species combined
Our research will consider:
Our research will consider:
Species substitutionEstimate angler willingness to
substitute to other species or species groups when fishing quality or fishing management changes
Our research will:
Estimate how willingness to substitute species might differ by angler typesocioeconomic factorspreferencesgear type (i.e., mode)
Our research will:
Provide species-specific estimates of economic value for: changes in fishing
quality management (e.g.,
size limits, bag limits)
To date:
We have identified the feasibility of demand modeling at the species level
Estimated a prototype single species demand model
MRFSS 2000
LA to NC n = 70,781
Southeast 2000 (Limited Valuation Round) n = 42,079
Hook and line trips only (99%), day trips only (67%), delete missing values on key variables n = 18,709
Targets a species n=11,257
Fishing mode
0
10
20
30
40
50
60
70
Shore
Party/Charter
Private/Rental
State of intercept
0
5
10
15
20
25
30
35
40
LA
MS
AL
FL (G)
FL (SA)
GA
SC
NC
Species
425 unique species caught by recreational anglers sampled by the MRFSS
15 species account for 82% of the targeting activity and 38% of the (type 1) catch
Top 5 target species of interest
Spotted seatrout 23%
Red drum 20%
Dolphin 6%
King mackerel 6%
Spanish mackerel 4%
Species groups
Big game 4%
Bottom fish 4%
Flat fish 5%
Small game 11%
Snapper - grouper 15%
Target BehaviorAny Species Dolphin
sign p-value sign p-value
Intercept + p < .01 - p < .01
Years fished + p < .01 - p < .01
Boat owner + p < .01 +
Shore mode - p < .01
Charter mode - p < .01 + p < .01
Days fished + p < .01 - p < .01
Wave 4 - - p < .01
Wave 5 + p < .01 - p < .01
Wave 6 + p < .01 - p < .01
Gulf - p < .01 - p < .01
Random Utility Models
Conditional LogitU = X’β + e
Mixed LogitU = X’δ + ε + e
Dependent variables
Travel cost [party/charter] TC = charter fee + driving
costs + time costs [private/rental] TC = driving costs + time
costs Predicted (type 1) catch rate
Depends on 5-year historic (type 1) catch rate
Big (20” or greater) Small (less than 20”)
Historic big game catch rate Number of MRFSS interview sites in the
county
Conditional/Mixed Logit
Party/charter boatEight counties
Private/rental boat Ten counties
Conditional Logit Results
Coeff t-stat
Travel cost -0.054 -25.13
Dolphin catch > 20" 11.37 9.87
Dolphin catch < 20" 1.15 9.11
Big game catch 13.30 14.38
Log(number of sites) 0.10 1.67
Number of observations = 685Number of alternatives = 18Number of cases = 12330
Mixed Logit Results
Number of observations = 685Number of alternatives = 18Number of cases = 12330
Coeff t-stat
Travel cost -0.080 -16.45
Stand. Dev. of TC 0.035 6.33
Dolphin catch > 20" 8.91 5.15
Dolphin catch < 20" 1.21 5.09
Big game catch 9.00 12.49
Log(number of sites) 0.036 0.47
Economic value of one fish per trip
Conditional Mixed
Big (> 20”) 209.78 110.82
Big + 1 sd 194.54
Big - 1 sd 77.48
Small (< 20”) 21.22 15.05
Small + 1 sd 26.42
Small - 1 sd 10.52
Policy analysis
About 1.3 million dolphin trips in east coast of FloridaThe welfare loss of new 20” size limit
is about:• $15/fish/trip • x 1.3 million trips• = $19.5m (=/- 1 sd: $33.8m, $14.3m)
These costs could be compared to the benefits …
Future work
Incorporate 1997 data Consider species substitution models for:
Dolphin King mackerel Red drum Spanish mackerel Snapper-grouper Aggregate species groups
Policy analysis: size limits, bag limits
Contact
John Whitehead
Department of Economics
Appalachian State University
Boone, NC 28608
http://www.appstate.edu/~whiteheadjc
Nested Logit
Party/charter Private/rental
Eight counties Ten counties
Nested Logit Results
Number of observations = 685Number of alternatives = 18Number of cases = 12330
Result
Travel cost OK
Dolphin catch > 20" Not stat. sig.
Dolphin catch < 20" OK
Big game catch Not stat. sig.
Log(number of sites) OK
