The EconomicImpacts of Sport DiversUsing Artificial Reefsin Texas Of%shore Waters
ROBERT B. DITTON' CAROL E. THAILING', ROBIN RIECHERS'and HAL R. OSBURN' 'Departmentof Wildlifeand Fisheries Sciences TexasA &M University,TAMU 2258 CollegeS'aration, Texas 77843-2225SUSA 'TexasParks and Wddlife Austin, Texas UZA
ABSTRACT Dive charterboat operators along the Texascoast were asked to providenames and athhessesfor a representativesample of their diving customers, A random sampleof 1,059sport divers was selected fiom divecharterboat records; 614 divers took trips to the Flower GardensBanks National Marine Sanctuaryand 445 divers in proportionto theknown number of non-FlowerGardens trips by coastalregion. An 11-pagemail questionnairewas used to collect socialand economic data fiom the sampleof divers. Of the 1,059questionnaires mailed, 528 were returned usable for anoveraH effective response rate of 562/o. About256 64/o of thosewho wmt diving in Texasmarine waters in the previous12 months!indicated they took one or moretrips in theprevious 12 months to artificialreefs in Texasoffshore wtners. This paperwill focuson thegroup of sportdiverswho usedartificial reefs.Artificial reefsincluded manniade materials deployed as bottomreefs, wrecks, snd standing oil and gasplatforms. Most diversparticipated in activities suchas night diving 81/o!, und~ photography 3 /o!, wreck divmg 2/o!, and nlarine identification 2'Yo!;only 25/oparticipatedin spearfishing. Two estinu~ of sport diver offshoretrip days ,985 and 5,953! were multiplied by the averageper trip expenditurefor Texasresidents $162! yieldingestinuded total expenditures direct economic impact! in coastal communities of $261,439 to $784,106. Total expendituresin coastal communifies by non-residentsof Texas were considerably less $58,885to $176,606!. The overaHeconomic impacts of artIficial reef diving in Texaswhere dive charterboats were used to accessoffshore reefs are presented in terms of changesin total output, income, and total employment. This paper excludedprivate boat divers who usedartificial reefs of&hore and charter snd privateboatdivers accessing the Flower Giudens Banks National Marine Sanctuary. Theoverall economic impact of sportdiving in Texaswouldbe higher if theseother mgmentswere included. FinaHy,the paperwiH emp~ methodsand address methodologicaldifficulties involved in studyingthis particular group of marine resource users and their activities.
KEY WORDS:Artificial reefs,economic impact, sportdiving 53" GuN and Caribbean Fisheries Institute Pa9e 345
INTRODUCTION The total numberof sportdivers worldwide was expectedto be 14 million by the year2000 McCawly and Teaff 1995!, As the numberof divers in~, the needfor additionaldive sitesalso can be expectedto increase.Natural reefscan only accountfor a certainamount of diving activity whereallowed due to carrying capacityconcerns for sustainability.Not all shipwrecksare sited to facilitate sport diving use. Offshoreoil andgas platforms in the Gulf of Mexico providetemporary diving resourcesso long as hydrocarbonproduction continues. Thesestructures must be removed once production ceases. In many areasof the world, the constructionand maintenance of artificial reefsis aneffective means for increasing the numberof dive sites,particularly where opportunities to satisfydiver demands are oth~ limited. ~ of losing diver clientele to other marketsin the region,the TexasArtificial Reef Programadministered by the TPW hassought to createadditional diving sitesalong the Texascoast. This is seenas having a positive impact on the charterdive boat industry,related iidrastructure, as well as coastal communities. 'Ihe TexasArtificia Reef Programwas authorizedby the Texas Ariificial ReefAct of 1989and is unplementedas per the TexasArtificial ReefPlan. In this paper,artificial reefsincluded ma-made materials deployed as bottom reefs, ship ~, and standingoil and gasplatforms. Previously,artificial reefs havebeen created an sitedprimarily to incr' fish biomass. Siting is typically carried out to met suite and federal statutory requirementsin the most cost-effectiveway Gordon and Ditton 1986!. Where fishingand diving usewas intended, it wasusually assumed that dive siteswith high fish biomassand diversity will meetthe needs of andattract participants to thereefs. In otherwords, "If we build it, theywill come". Recently,however, there has been a paradigmshift towardunderstMiding and planning for usersand their rection experiencesrather than simply being concernedwith biological improvements. Accordingly,reef siting is beinglinked with humanpopulation and tourism densities andthe ex~ demandfor scubadiving -relatedresources. The reasoning is that if artificial reefsare well sitedfiom a marketperspective, use will be encouraged, and social andeconomic benefits will be forthcoming. Understandingdirect and indirecteconomic impacts of expendituresby residentand non-resident sport divers usingartificial reefspmvides decision makers with usefulfeedback on previous reef deploymenlsand a baselinefor future reef deployment The economic impaeh of artificial reef