.. .. .. .. .. .. U n iv e r sid a d T e c n o ló gic a d e P e re ira F a c u lta d d e C ie n c ia s A m b ie n ta le s A d m in istra c ió n d e l M e d io A m b ie n te w w w .u tp .e d u .c o /a re a s m a r in a s Carrying Capacity for dive sites In San Andres Island (Colombia) Francisco Gallo M 1 . Alejandro M artínez C 2 . Jorge Iván Ríos P. Ph.D (c ) 3 colom bia2@ scubadiving.c om boyando@ hotm ail.c om jrios @ c ol2.telec om.c om.c o D elim ita tion of c arryin g c ap ac ity for m or e freq ue ntly V isited d ive sp ots in S a n A ndrés Is lan d . Resumen: L a C ap ac id ad de C ar g a T urística , u n tip o es p ecífico d e C ap ac id a d de C ar g a A m b ien ta l, repres en ta un n ú m ero d e visita ntes p or en cim a d el cu al las con dicion es d el ecosistem a s e h a ce n ins ostenibles. S u estim a ció n pa ra los sitios d e b u ceo m ás frecu en ta d os en S an A n drés Isla, fu e el ob jetivo d e l pres en te estu dio, s olicita d o p or la a utoridad a m bien tal, C O R A L IN A p ara esta blecer u n Sis te m a D e Á reas M arin as P ro te gidas en la R es erva d e la B ios fera “ Se a F lo w er” d e la U N E S C O , con p olíticas d e m an ejo s ostenible. S e utilizó la m etod olog ía d e C ifu en tes et.al, ada pta da in clu yen d o fa ctores es ta dísticos d e correcció n p or ries g o a m biental, ad ecu ad os a las con d icion es d el m edio su b m a rin o. L os insu m os utiliza d os in clu yeron in form a ció n s ob re esta d o biofísico, intensida d d e us o y efe ctos d e los b u zos en los s itios d e prá ctica , obten id a d e obs erva cion es d e ca m p o y b itá coras p rofes iona les. A u nq u e la rela ció n en tre la ca ntida d d e visita ntes y s us efe ctos, n o es lin eal, pu d o d efinirs e en té rm in os d e prob ab ilid ad. L os resu ltad os in dicaron un p rom ed io d e 2 9,2 b u zos p or s itio al d ía, 1 0.65 7,7 a n uales . R ecorda nd o q u e con trola r el flujo d e visitan tes es s olo un a d e las estra tegias p ara el m a n ejo d e su im pa cto, s e pres en ta n las cifras , n o com o el elem ento centra l d e la estra tegia d e g estió n, sin o com o referen cia pa ra fu tu ra eva lua ción d e intens ida d d e us o y h erra m ienta p ara es tim a r el da ñ o es p erad o. Palabras clave: C apacidad de C arga - Ec oturis m o - B uc eo R ecreativo - S an A ndrés Is la - Abstract: C arr ying C ap ac ity , a sp ecific kind of en viron m ental ca rryin g ca pa city, rep res ents a lim it nu m b er of visitors ov er w itch ec os ys tem con d itions b ecom es uns ustaina ble. It’s es tim ation for m ost freq u ently us ed d iving s p ots a t S a n A n drés Is la nd , w as th e m a in ob jective o f this s tu d y, requ es ted b y C O R A L IN A , en viron m en tal au th ority, to estab lis h a M ar ine P r otected A r ea Sys te m a nd sus taina ble m a na g em ent p olicies a t n ew ly d ecla red B ios ph ere R eserv e “Se a F lo w er” b y U N E S C O . M eth od olog y fro m C ifu entes ´s et.a l. has b een us ed, bu t it w as a da pted to in clu d e sta tis tical correction fa ctors ab ou t en viron m enta l ris ks, a deq uate for u n d erw ater con d itions. U s ed item s , in clu d ed biop h ys ica l in form ation , us e d ens ity an d diver effects on divin g sites, obtain ed from in -site obs erva tion a nd p rofess iona l log b ook s. A lth ou g h rela tions hip b etw een us e lev el a n d im pa cts is n on lin ear, it ca n b e d efin ed on term s of statistica l prob ab ility. R es ults, ind ica ted 29 ,2 daily a vera g e d ivers p er s ite, a b ou t 10 .6 57 ,7 d ivers p er yea r. T a k in g in to 1 P oB ox 1 8 7 0 P ereira, C o lom b ia, teléfon o 5 7 6 3 -3 8 8 5 6 4 T rab ajo d e G rad o L o s C ed ro s, B q 4 Ap to 1 0 2 P ereira, C o lom b ia, teléfon o 5 7 6 3 -3 6 2 2 0 0 T rab ajo d e G rad o 3 U n . T ecn o ló g ica d e P ereira FC A . L a Ju lita P ereira, C o lo m b ia, teléfon o 5 7 6 3 -2 5 7 2 7 2 ext. 1 8 1 D irector T . d e G rad o 2 más Facultad de Ciencias Ambientales, UTP .......................... C a pac id ad de ca rg a de visitan tes en área s de b uceo de San A n dré s (C o lo m b ia) Pá gina 2 a ccou nt that visitor flow con trol is on ly on e from m an y w a ys for im pa ct m a na g em ent, nu m b ers are pres ente d n ot as core stra teg y elem en t, b ut as fu tu re referen ce for us e d ens ity ass ess m ent an d as a tool for da m ag e lik elih ood estim ation. Key words: C arrying C apacity - Ec otouris m – Sc uba Diving – S an Andres Is land - In tr od u ction A n a pproa ch to th e visitors im pa ct m a na ge m ent , is th e T iris tic C arry in g A pro ac h, a kind of E n viron m en tal C a rr ying C ap a city” (C eba llos -L as cu raín, 19 9 6) that rep res ents a lim it nu m b er over w hich th e ecos ystem can n ot h old its prod u ctivity, a dap ta bility, an d reg en eration capa city (B orriet, M cC ool & S tan k e y, 19 9 8 ) . It h as b een us ed sin ce th e ea rliest 9 0' s in terres tria l p ortions of b iolog ica l res ervations in C osta R ica, "G a lap ag os " N a tiona l P a rk (E cua d or) and in th e F erna n d o N oron h a M a rin e N ationa l pa rk, in B ra zil (C ifu entes et.a l, 19 9 9). T h e S pecial A d m inistra tive U nit of N a tiona l Parks of C olo m b ia U A E P N ha s genera liz ed its u se in protected area s . T h e m ain g oal of th e p res ent s tu d y, s olicita d o p or C O R A L IN A (J u n e M arie M ow R ob ins on , 20 00 ) 4 com o a utorid ad a m b ien ta l en S an A nd rés , es la estim a ció n d e C ap acid ad de C arg a d e V isita ntes en los s itios d e b u ceo y es d e im p orta n cia en el p roces o d e con form a ció n d e áreas m a rinas p rotegidas. S tud ies ab ou t th e effe cts o f th e diving a ctivities on differen t en viron m en ts has b een carried ou t sin ce 19 92 h a ve s h ow n divers e resu lts; T h e y h a ve sh ow n diverg en ces, that s ug es t us e lim its s om ethin g b etw een 5 00 to 15 .0 00 divers for d ive sp ot a yea r. T h e n otion o f ca rryin g capa city is elastic instead of fixed , a nd it d ep en ds on oth er fa ctors, s u ch as diver ed u cation , certification level an d ba ckg rou nd (H aw k yns & R ob ers , 19 97 ). In 1 99 3 F a llon S cu ra , T om V a n' t H o f, (20 01 ) and J oh n D ixon et.al; b y com pa rin g five d ivin g sp ots w ith d ifferen t us e intensity lea d th em to th e 4 C arta de Ju n e M arie M ow R ob in son , D irector a G en eral C O R A L IN A , San A n drés Isla 2 9 D ic. 2 0 0 0 . “tresh old h yp oth esis tha t diver im p a ct b ecom e evid ent w h en th e us e exce eds a level of 4.00 0 to 6.0 0 0 divers in a sp ot p er yea r” . A lth ou g h th e n ega tive e ffects d o n ot d ep end on th e q ua ntity b ut on th e b eha vior of th e visitors, it is un a ccep tab le to think tha t th e n u m b er of visitors could g row w ith ou t lim it. A w a y to con n ect th e da m ag e w ith th e n u m b er of vis itors is to es tim a te, bas ed on sta tis tics , th e da m a ge likelih oo d, a con cep t sim ila r to R isk, as fu n ction of H azar d an d V ulner ab ility to feed th e carr ying ca pa city m od el. A lth ou g h th e m a na g em ent p olicies w ou ld b e cen tered in d ivers e m eth ods tha t d o n ot n ecess arily lim it th e n u m b er of us ers , it is p oss ib le to us e g oals of da m ag e red u ction a nd to g en erate stim u lus to en force its a pp lication. T h is m odification to C ifu entes m eth od olog y and its ap plica tion to un d ers ea tou ris m a re th e m a in con trib utions to th e pres ent cha pter. M aterials and m ethods T w en ty-three p la ces w ere s elected a m on g th os e m ost us ed on es. R elative in form ation ab ou t localization, intens ity us e, cu rren t state, form s and com p os ition of b ottom coverin gs, effect o f th e divers a n d op era tion p rotocols , w as gath ered b y m ea ns o f direct obs erva tions a nd d ive logb ook s of s ix (6 ) d ifferen t p rofess iona ls (3 1,58 % ). I n fras tru ctu re, equ ip m ent an d tea m s ass ess m ent w ere us ed, w ith s even (7 ) diving op erators (7 7,78 % ) to es tim a te th e op erative m a na ging an d con trol ca pa city, as w ell as P a d i p rofess iona l diving op era tion stan da rds as a referen ce to eva lua te th e s ervice protoc ols. T h e calcu lation for th e V is itors C a rr ying C ap a city w as ca rried out bas ed on m eth od olog y b y C ifu en tes (1 99 9 ) us ed b y W W F in C entra l A m erica, ad ap ting correction fa ctors to más C a pac id ad de ca rg a de visitan tes en área s de b uceo de San A n dré s (C o lo m b ia) un d erw ater con dition s, an d p rob ab ilis tic elem en ts for ha za rd a nd vuln era bility. T h e process consists of three levels : • C alculation of th e P h ys ica l C arry in g C a pac ity ( C C F ); C alculation of th e R ea l C arr ying C ap acity ( C C R ); y • C alculation of th e E ffective C arry in g C a pac ity (C C E ), ea ch on e s m aller or sim ila r to th e p revious on e. T h e P h ysics ca rr yin g ca pa city is th e es tim a te of th e m a xim u m nu m b er of vis itors that p h ys ica lly cou ld sta y in or g et to certain pla ce for a given p eriod o f tim e. It is d efin ed as : CCF = ( S ) * NV SP w h ere: S = a vailab le surface in linea l S P = surfa ce used b y a dive m eters N v = n u m b er of tim es th at cou ld rep eat th e vis it du ring a da y w ith out consid erin g d ecom p ress ion m od els: Nv = Hv tv w h ere: H v = S ch ed ule of visit tv = T im e n eed ed to ea ch visit T h e R e al C arrying C a pac ity (C C R ) a ffe cts C C F b y C orr ectio n F ac to rs su ch as: a ccess difficu lty, fra gility of th e ree f com m u n ity sp ecies , requ irem en t o f sp ecialized eq uip m en t or tech nics (varia ble x). T h e C orre ctio n F a ctors for x are calculated as follow : FCx = 1 - ( Mlx Mtx ) w h ere: F c x = C orrec tion F a ctors for va ria b le x ; M L x = R estrictive M a gnitu de for va riab le x; & M T x = T otal m a gn itud for varia ble x T h e correction fa ctor cou ld b e u nd ers tood from th e p oint of view of s ta tistica l p roba bility, if w e observe tha t th e ter m ( M L x / M T x) is equa l to th e em pirical p rob ab ility of th e va riab le x, ass ocia ted to th e relative frequ en c y of x in th e o bs ervation ’s field log b ook , for th e biolog ica l a nd p h ys ica l con dition s as w ell as for us e an d its effects in Pá gina 3 diving s p ots. T h is w a y, th e correction fa ctor, brin g us a q uan tita tive a pp roa ch, th e prob ab ility tha t x d oes n ot occ ur ; F C x = 1 -p (x ). E l cálculo d e C a pa cid ad d e C a rga R eal estaría dad o p or la sigu ien te fó rm u la: CCR = CCF * FCsoc * FCfg * FCda * FCanc * FCev * FCvie * FCmc * FCpe T h e follow ing correction fa ctors w ere cons id ered : • F a ctor of s ocia l correction (F s oc). It cons id ers th e size of th e g rou ps, a ccord ing to th e nu m b er of vis itors p er sup ervis or, th e d uration of th e diving a n d th e d ista n ce b etw een divers g rou ps a void in g con g estion a nd im pro ving su p ervis ion and con trol tas ks. • It dis cou n t th e p ercen ta g e of fra gile cov erin gs, lik e p roba bility o f in tera ction of divers w ith th e b ottom in th os e a reas. F a ctor of D a m ag es du e to con ta cts (F C da ); It is bas ed on th e m a th em atic al like liho o d of d am ag e ass ociated to th e frequ en c y of con ta cts w ith th e b ottom , a n d th e p roba bility tha t th es e con ta cts caus e d a m ag es. F a ctor of C orrection for a n ch ora g e (F C a nc ); b y ana log ous w a y, it com p ensa tes th e m a th em atica l lik elih ood o f d a m a g es for an ch orag e on cora l form a tions . F a ctor for E va cua tion (F C ev ); It introd u ces us e redu ction for pla ces w ith p articu la r difficu lties for em erg en c y eva cua tion , just su ita ble for exp erts. F a ctor of W eath er restriction (F C v ie ); It cons id ers th e tem p ora ry lim its of us e du e to stron g w a ves an d/or curren ts. M inicou rs e F a ctor (F C m c )F or a chievem en t of introd u ctor y d ivin g exp erien ces, th e stud en ts to instru ctor ratio dim in is h es from 8:1 to 6 :1 , a n add itiona l correction fa cto for m in icous es F C m c = 0,75 ; O ver h ea d en viron m ent (F cp e) F or ca ves or shipw recks p en etration, th e ra n g e is o f 2:1, s o th e n ew correction fa ctor for over h ea d en viron m en t is F C pe = 0,2 5. más C a pac id ad de ca rg a de visitan tes en área s de b uceo de San A n dré s (C o lo m b ia) T h e E ffectiv e C arry in g C ap ac ity (C C E ), rela tes (C C R ) w ith th e M an a ge m en t C ap ac ity (C M ), d efin ed as th e b est con dition th at th e ad m inis tration sh ou ld h a ve to p ra ctice th e a ctivities an d m eet th e g oa ls in a sa tis fa ctor y w a y. T h eC M is estim ated as p ercen tag e res p ect to th e op tim u m from ea ch varia ble an d th e ob tain ed Pá gina 4 data w as a vera g ed. V a ria bles su ch as air tan k refillin g, b oa t tra ns p ortation , diver su p ervision , m a na g em ent a n d control u nd erw a ter w ere us ed as lim iting criteria. T h e a ttitu d e o f th e p rofess iona ls w ere con sid ered, as w ell as read in ess a n d us e o f equ ip m en t. CCE = CCR*CM R esults Tabla 1. Visitors C arry ing capacity Dive Spot CCF FCso c FCfg FCda Fcan c FCev FCvie CC R CM B ajo B o nito 82 0 5,6 7 0,0 16 0 4 0,9 00 8 0,7 68 5 0,9 75 3 1 0,6 7 61,05 0,4 12 6 CC E 24,57 18,43 B lue D ia m o nd 82 0 5,6 7 0,0 16 0 4 0,8 87 4 0,7 68 5 1 1 0,9 34 2 83,85 0,4 12 6 34,60 25,95* B lue W all 82 0 5,6 7 0,0 16 0 4 0,8 45 5 0,7 68 5 0,9 75 3 0,7 01 2 0,3 28 19,67 0,4 12 6 7,9 2 C a bles 82 0 5,6 7 0,0 16 0 4 0,8 45 5 0,7 68 5 0,9 75 3 0,7 01 2 0,3 28 19,67 0,4 12 6 7,9 2 C ntl. P iscinita 82 0 5,6 7 0,0 16 0 4 0,9 31 9 0,7 68 5 0,9 75 3 1 0,9 34 2 88,06 0,4 12 6 35,43 C nl D ia m o n d 82 0 5,6 7 0,0 16 0 4 0,4 03 7 0,7 68 5 0,9 75 3 1 0,9 34 2 38,15 0,4 12 6 15,35 C u ev as 41 0 2,8 3 0,0 61 9 0,7 91 0,6 48 3 1 1 0,9 34 2 12 1,6 7 0,4 12 6 50,20 D . d e M org a n 82 0 5,6 7 0,0 16 0 4 0,7 87 3 0,7 68 5 0,9 75 3 1 0,9 34 2 74,39 0,4 12 6 29,94 E s. d e p adi 82 0 5,6 7 0,0 16 0 4 0,7 87 3 0,7 68 5 0,9 75 3 1 0,9 34 2 74,39 0,4 12 6 29,94 F aro 41 0 2,8 3 0,0 61 9 0,9 79 1 0,6 48 3 1 1 0,9 34 2 15 0,6 0,4 12 6 62,14 M o nta nita 82 0 5,6 7 0,0 16 0 4 0,9 27 3 0,7 68 5 0,9 75 3 1 0,6 7 62,84 0,4 12 6 25,29 N irva n a 41 0 2,8 3 0,0 61 9 0,9 10 5 0,6 48 3 1 1 0,9 34 2 14 0,0 5 0,4 12 6 57,78 P . las C hern as 82 0 5,6 7 0,0 16 0 4 0,8 45 9 0,7 68 5 0,9 75 3 1 0,3 28 28,06 0,4 12 6 11,29 P irá mid e 27 3 5 0,0 16 0 4 0,8 94 6 0,6 48 3 0,9 75 3 1 0,6 7 17,05 0,4 12 6 6,8 6 5,1 4 P iscinita 41 0 2,8 3 0,0 61 9 0,9 41 6 0,6 48 3 1 1 0,9 34 2 14 4,8 3 0,4 12 6 59,76 control P u nta P a di 41 0 2,8 3 0,0 61 9 0,8 29 4 0,6 48 3 0,9 75 3 1 0,9 34 2 12 7,5 7 0,4 12 6 51,34 R e g ga e N est 82 0 5,6 7 0,0 16 0 4 0,8 69 7 0,7 68 5 0,9 75 3 1 0,6 7 58,94 0,4 12 6 23,72 R o co sa 82 0 5,6 7 0,0 16 0 4 0,9 00 8 0,7 68 5 0,9 75 3 1 0,6 7 61,05 0,4 12 6 24,57 T r de T ortu g as 82 0 5,6 7 0,0 16 0 4 0,8 45 5 0,7 68 5 0,9 75 3 0,7 01 2 0,3 28 19,67 0,4 12 6 7,9 2 V elerito 82 0 5,6 7 0,0 16 0 4 0,4 77 3 0,7 68 5 0,9 75 3 1 0,9 34 2 45,1 0,4 12 6 18,15 W est P oint 82 0 5,6 7 0,0 16 0 4 0,8 43 1 0,7 68 5 0,9 75 3 1 0,9 34 2 79,67 0,4 12 6 32,06 24,04 W est V ie w 82 0 5,6 7 0,0 16 0 4 0,8 41 3 0,6 48 3 1 0,7 01 2 0,9 34 2 47,02 0,4 12 6 19,40 14,55 W ild Life 82 0 5,6 7 0,0 16 0 4 0,9 31 9 0,7 68 5 0,9 75 3 1 0,9 34 2 88,06 0,4 12 6 35,43 26,57 Diver/day aver age 29,20 Annual average 10.657,70 FC m c 37,65** 46,61 43,34 18,43 C arry in g C ap ac ity as A v erag e vis itan tors p er s ite a d ay . *O v er-h ead 8,6 5 b u z os / día. ** O v er-h ead 12,5 5 b u z os / día. T h e a nn ua l m ea n ob s erved in S an A n d rés coral reefs, con tras ts w ith th e 5 0 00 an nu al divers p er pla ce s u gg ested as referen ce b y van ´t H o f for B on aire 5 . T h is differen ce ca n b e exp la in ed b y th e 5 E n trev ista con T om v an ´t H of, p rim er g eren te d e B o n a ire M a rin e P a rk con su ltor p ara N eth erla n d s A n tilles N a tio n a l P a rk F o u n d a tio n , , con su lto r p o r C en ter for M arin e C on serv ation C M C p ara el estab lecim ien to d e la reserv a de la b iosfera d e la U N E S C O S ea F lo w er, S an An d rés Isla, C o lo m b ia, M arzo de 2 0 0 1 . más C a pac id ad de ca rg a de visitan tes en área s de b uceo de San A n dré s (C o lo m b ia) low er prop ortion p res ent at S a n A n d res o f sus ceptib le sp ecies su ch as b ra n ch ed corals , usua lly us ed to eva lu ate vuln era bility cora l reefs 6 . A noth er im porta nt difference, exist in u sed m eth odolo gy estim ating carrying ca pa city ; C o m parison b etw een th e m ore a nd less visited diving spots condition , bu t it did n ot res ult con clusive for S a n A nd ré s, as th is in form a tion w as n ot a vaila ble.. T h e d eteriora tion rep orted in th e stud y of B on aire is rela ted to diver con cen tration arou n d th e m o orin g bu o ys d irectly o ver th e cora ls, an d th e p rop os ed n u m b er is just a g en era l referen ce. T h e nu m b er prop os ed for S a n A nd rés is differen tia l a ccord in g to th e cha ra cteristics of ea ch on e o f th e d ivin g s p ots a n d its us e. T h e obtain ed valu es com p ared to th e cu rrent flow of vis itors , 0,73 divers p er divin g sp ot a da y, in dicate a w asted offer tha t can b e op tim ized , h om og en izin g th e s eas ona l trends o f th e d em an d, b y m ea ns of exp loration of oth er m a rk ets a nd offers to tra vel on low s eas on. It w ould fa cilita te to cou nt on m ore su p ervis ion and con trol p ers on n el. G raph 1 . C om parison betw ee n c urre nt u se a nd effective carrying capacity 70 60 H ow e ver th e n u m b er ob ta in ed for L a P ir a m ide is b eing overc om e b y th e level of cu rren t us e; A lth ou g h th e daily us e a verag e (1,7 5) is low er tha n C C E , th e s eas ona l flow g en era tes in tens ive us e, u p to 44 d aily visitors. E l F a ro, N ir va na , B ajo B o nito y la R o cos a su ffer s im ila r ph en om en a. It is n ecessa ry to un d erlin e that th e C M has b een pres ented as a n a vera g e o f th e d ivin g cen ters tha t ha ve pa rticipa ted in th e stud y. A lth ou g h th e in dividu al ca pa city of ea ch d ivin g op era tor ca n va ry, th e us e o f differen tial carr ying ca pa cities is hind ered for ea ch op era tor for th e follow in g reas ons : • T h e as sign m ent of op era tion sh ares w ou ld b e evid ently d is crim ina tor y; • W ould b e com p lica ted th e a d m in istrative fu n ction of th e p ark; a nd • W ould n ot b e com p ensa ted th e ind ivid ua l va ria bility o f th e effect of th e visitors. A lth ou g h a trad itiona l ap p roa ch , rela tes th e qua ntity of da m a g e in a pla ce w ith th e n u m b er o f visitors , a ccord in g to R ou p ha el & In glis (1 99 7), su ch a n a p proa ch is q uite s im p listic. F irst, b eca us e th e effects of th e d ivers a re m ore in flu en ced b y th eir ab ility an d b eh a vior tha n b eca us e of th eir n u m b er; an d s econ d , b eca us e o f th e divers e ph ysical an d b iological cha ra cteristics of th e reefs reflect differen t d egrees o f sus ceptib ility to th e p ress u re o f th e vis itors. C onclusions and recom m endations F or th is rea son, th e ex ercise of estim a ting th e V isitors C a rry in g C a pac ity is presented, as a re fere nce line fo r assesing the u se inte nsity for diving areas, instea d of as m ain ele m e nt of th e m a na ge m ent strategy . 40 30 20 10 s e all Pi rá m id le W ab e Blu C an til C o co de Ve lB le ar rit w ie tV es W eg R Ba jo ga e Bo N nit es o t i a ad ñit lP ta on de as M d t es W nj po Es ia D ue tP m oin on e ita Lif cin ild Bl Pis a nt la Pu de til C an W di Pa an cin irv N Fa ro ita a 0 Pis Buzos al día 50 Pá gina 5 Sitio de buceo Uso actual CCEfectiva CC Minicurso M inic urs e m id dle lin e (B rok en ). Pis cinita , c on trol s ite w ith z ero (0) m in ic urs es . O b s erv e Lin es clos e for La P irám ide, Blue W all, C a bles , y T ram pa d e T ortugas . 6 E n trev ista con U sseg lio P ao lo , b ió lo g o m arin o co rp o ració n C O R A L IN A . S a n A nd ré s Isla , M a rz o 2 0 0 1. It m us t b e rem em b ered th at th e lim it of visitors d oes n ot con stitute a g oa l in its elf, b ut a w a y (an d n ot th e on ly on e) to p rotect th e res ources of th e area , an d it sh ou ld b e revis ed p eriod ica lly a ccording to th e varia tions o f th e en viron m en ta l con dition s; T h e d ecreas e of th e freq u en c y o f tou ch es or th e in creas e in th e divin g op erators and divers m a na g em ent capa city, in creas e th e más C a pac id ad de ca rg a de visitan tes en área s de b uceo de San A n dré s (C o lo m b ia) carr ying cap a city, com ing clos er to th e C C F in th e m eas u re tha t th e effects aim to zero. T h e s ug g es ted ca rryin g capa city, is a n a vera g e of 2 9,2 divers p er diving sp ot a da y, d im inis h ed Pá gina 6 for m ini- cou rs es to 7 5 % a nd 25 % for ov er h ea d en viron m ents. A ck n ow le d ges To P A D I P ro ject A W A R E F ou nd atio n, C a. U S A a nd S a n A nd res Is la nd D ive s h ops w h o pa rtially fina n ced th e p res ent s tu d y. It w as d evelop ed insid e th e fra m e o f S ea F lo w er B iosp here R eser ve M arin e P r ote cte d A rea pr oject w ith th e com m itm en t a n d su p p ort of th e en viron m ental au th ority, C ora lina. R efere n ce s : B O R R IE T . W illia m , M cC O O L S tep h en F . & S T A N K E Y G eorg e H . 1 99 8, P r ote cte d A re a P lan nin g, P r inc ip les a nd Stra teg ies, E n : L IN D B E R G K reg , W O O D M ag an E p ler & E N D E L D R U M D a vid E c oto uris m , A G uide for P la nn ers an d M a n ager s V ol. 2, T h e E cotou ris m S ociety, N orth B en ning ton , U S A , p. 13 3 -1 51 . C E B A L L O S - L A S C U R A ÍN , H é ctor. 1 99 6 T our is m , E co to uris m an d P ro tec ted A re as, C ita d o p or : C IF U E N T E S A . M igu el et.a l; 1 9 99 C a pa cida d de C arg a T ur ístic a de las A r eas d e U s o P úb lico d e M on u m e nto N ac io na l el G uay a bo, C osta R ic a. W W F C en troa m é rica, T u rria lba, C os ta R ica p.8. C IF U E N T E S A . M igu el et.a l;1 99 9 C a pac id a d de C arg a T urís tic a de las A re as de U s o P ú blic o d e M on u m e nto N ac io na l el G uay a bo, C osta R ic a. W W F C en troa m é rica, T u rria lba, C os ta R ica 75 p. H A W K IN S , J.P . y. R O B E R T S , C .M . 19 97 . E s tim a ting the c arryin g c ap ac ity of c or al r eefs for re cre atio na l scub a diving. E n : P roc. 8 th In t. C ora l R eef S ym p. 2 :1 92 3 -26. C ita d o p or: va n’t H O F , T om ; T our is m Im p acts O n C or al R eefs : Incr eas in g A w ar en ess In T he T o uris m Sec tor , O p.cit. R O U P H A E L ; A n th on y & IN G L IS ; G ra em e J . Im pa cts of R e crea tion al Sc ub a D iv ing at Sites w ith differen t T o p ogr ap hies, E ls evier S cien ce, A u stralia 1 99 7, 8p . van ’t H O F , T om ; 20 01 T o uris m Im p acts O n C or al R eefs: Incre asing A w are ness In T he T o uris m Sec tor A U N E P C on trib ution to th e Interna tion al C ora l R ee f In form a tion N etw ork (IC R IN ), F ren ch M in istr y o f th e E n viron m en t (M A T E ), S ab a, N eth erlan ds A ntilles.