246 
Fishery Bulletin 1 12(4) 
Table 1 
Average unweighted ( UW ) and weighted ( W ) harvest rates per angler trip for groupers (Epinephelus spp., Hyportho- 
dus spp., or Mycteroperca spp.) and red snapper (Lutjanus campechanus ) were calculated for 28 fishing zones, which 
represented a coastal county along the Gulf of Mexico where fishing for these species occurred in 2009 . Data are 
from the National Marine Fisheries Service’s Access Point Angler Intercept Survey in west Florida, Alabama, Missis- 
sippi, and Louisiana for anglers fishing from private boats. This table also shows the number of individual sites with- 
in each zone where fishing occurred for groupers and red snapper. The proportion of angler trips by zone is shown for 
the sample ( A/j ) data. Survey weights were used first to estimate the total number of trips at the population level by 
zone and then to calculate by zone the proportion of trips evaluated at the mean population level ( Qj ) and the lower 
and upper limits of the 95 % confidence interval around the mean. No value in a cell signifies that the zone had no 
predicted trips in the lower-limit scenario and, therefore, data for that zone were not used. 
Zone 
Number 
of sites 
Harvest rate 
Proportion of trips 
Groupers 
Red snapper 
Sample 
( Hj ) 
Population ( Qj ) 
UW 
W 
UW 
W 
Mean 
Lower 
limit 
Upper 
limit 
1 
7 
0.150 
0.043 
1.155 
1.003 
0.025 
0.020 
0.036 
0.016 
2 
3 
0.708 
0.763 
1.000 
0.898 
0.046 
0.038 
0.046 
0.035 
3 
9 
0.732 
0.668 
1.273 
1.219 
0.023 
0.050 
- 
0.068 
4 
2 
0.532 
0.527 
0.010 
0.010 
0.002 
0.004 
- 
0.006 
5 
5 
0.433 
0.411 
0.010 
0.010 
0.058 
0.040 
0.048 
0.037 
6 
7 
0.059 
0.049 
0.010 
0.010 
0.033 
0.054 
0.047 
0.053 
7 
4 
0.563 
0.533 
0.333 
0.333 
0.003 
0.003 
- 
0.005 
8 
11 
0.403 
0.408 
1.380 
1.601 
0.074 
0.072 
0.059 
0.071 
9 
11 
1.119 
1.098 
1.310 
1.495 
0.036 
0.059 
- 
0.071 
10 
3 
0.864 
0.956 
1.086 
1.181 
0.007 
0.003 
- 
0.005 
11 
3 
0.246 
0.222 
0.010 
0.010 
0.085 
0.053 
0.060 
0.049 
12 
9 
0.148 
0.262 
0.010 
0.010 
0.104 
0.091 
0.137 
0.078 
13 
7 
0.254 
0.165 
0.010 
0.010 
0.006 
0.007 
- 
0.010 
14 
3 
1.027 
1.435 
0.010 
0.010 
0.003 
0.002 
- 
0.003 
15 
7 
0.193 
0.212 
0.010 
0.010 
0.034 
0.034 
0.011 
0.037 
16 
5 
0.208 
0.303 
1.153 
1.188 
0.030 
0.039 
0.022 
0.041 
17 
4 
0.384 
0.318 
0.010 
0.010 
0.042 
0.033 
0.045 
0.029 
18 
19 
0.344 
0.337 
1.500 
1.643 
0.187 
0.188 
0.351 
0.148 
19 
3 
0.182 
0.193 
1.262 
1.689 
0.026 
0.056 
- 
0.084 
20 
6 
0.551 
0.499 
1.402 
1.402 
0.067 
0.058 
0.044 
0.058 
21 
5 
1.143 
1.054 
0.010 
0.010 
0.002 
0.001 
- 
0.002 
22 
5 
0.786 
0.749 
0.010 
0.010 
0.031 
0.043 
0.041 
0.042 
23 
3 
0.010 
0.010 
1.020 
1.045 
0.022 
0.018 
0.021 
0.017 
24 
3 
0.010 
0.010 
1.707 
1.381 
0.002 
0.001 
- 
0.001 
25 
3 
1.400 
1.039 
1.749 
1.867 
0.018 
0.018 
- 
0.023 
26 
2 
0.010 
0.010 
2.931 
3.412 
0.008 
0.006 
- 
0.007 
27 
4 
0.010 
0.010 
0.200 
0.170 
0.006 
0.002 
0.006 
0.001 
28 
5 
0.010 
0.010 
0.512 
0.520 
0.017 
0.009 
0.026 
0.005 
included. Anglers from Texas were not included because 
Texas does not participate in the Marine Recreational 
Information Program. Following standard practice (e.g., 
Gentner, 2007; Haab et al., 2012), we grouped together 
the intercept sites, where anglers were interviewed, 
within the same coastal county and then redefined the 
site chosen by the angler in terms of a coastal county, 
or zone. Across the 4 states in our sample, 160 APAIS 
intercept sites had data for private-boat trips for grou- 
pers or red snapper. We aggregated these 160 sites 
into 28 zones (Table 1). To address potential biases 
with aggregation of differing numbers of sites in each 
zone, a variable for the natural logarithm of the num- 
ber of sites in that zone was included in the vector, q, 
of attributes (Parsons and Needleman, 1992). Figures 
1 and 2 were created with the maps, ggplot2, and GIS- 
Tools packages for R, vers. 3.0.0 (R Core Team, 2013). 
The mean population-level frequency of trips in 
each zone in 2009 (and the 95% confidence interval) 
was estimated with the Surveyfreq procedure in SAS, 
vers. 9.3 (SAS Institute, Cary, NC) by using the APA- 
IS weightings, stratum, and cluster information. The 
mean, lower confidence limit, and upper confidence 
limit of the population proportions (Qj) were divided 
