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Effective management of Guam's inshore fishery resources requires accumulating data on the types of fishing methods used, fishing pressure, and annual catch. To identify trends in fishing participation, effort, and catch, the Division of Aquatics and Wildlife Resources (DAWR) has been monitoring day and night coastal fishing activities since FY85. Over this period of time, survey and analysis methodologies have changed in response to fluctuations in budget and staff. In the last several years, however, field survey techniques have been expanded and refined, while estimates of Guam’s recreational and subsistence fishing activities have come to be based on more reliable data analysis techniques.

Landings


SPECIES Harvest FAMILY Harvest

mt %
mt %
Siganus spinus 4.686 13.97 Acanthuridae 7.309 21.79
Naso unicornis 3.512 10.47 Siganidae 5.106 15.22
Carnanx i'e' 2.010 5.99 Carangidae 5.038 15.02
Mulloides flavolineatus 1.590 4.74 Mullidae 2.331 6.95
Kyphosus vaigiensis 1.513 4.51 Mugilidae 1.882 5.61
Acanthurus triostegus 1.163 3.47 Kyphosidae 1.794 5.35
Liza vaigiensis 1.007 3.00 Lethrinidae 1.657 4.94
Decapterus macrosoma 0.921 2.75 Lutjanidae 1.048 3.12
Lethrinus harak 0.901 2.69 Scaridae 1.021 3.04
Naso lituratus 0.785 2.34 Labridae 0.818 2.44
TOTAL ANNUAL COMBINED 18.088 53.93
28.004 83.48


Declining Fisheries

Graph of declining inshore fish catch
Overall declines in annual harvests and shifts in species composition have been documented in the last 16 years, as shown in the graph. With the recent legislative approval of Marine Preserve Areas (MPAs) and the implementation of new fishing regulations, we can begin to manage levels of fishing activity and preserve critical areas for reef fishes to mature and reproduce. As of June 2000, DAWR began the daytime enforcement of Guam’s MPAs. Since then, a sharp decline in fishing participation was observed within the survey areas with a 46% decline in total harvests and a 29% decrease in CPUE [catch per unit effort] of reef fish species for FY00. The overall success of the MPAs will be seen in the near future if enforcement measures are maintained over time. In addition, the implementation of new survey strategies may be necessary to document the change in reef fish biomass, biodiversity, habitat, and catch rates in reef areas adjacent and within MPAs over time.

More details:
FY 2000 annual report
FY01 brief update
Created by webmaster
Last modified 03/09/2005 05:09 PM
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