Isigodi soMfula iSegura sibhekene nenselele enkulu yemvelo ngenxa yokwanda kwezilwane ezingezona ezomdabu, okuphazamisa ibhalansi yemvelo yamanzi aso. Lesi simo sesifinyelele eqophelweni lapho ukuhlukahluka kwemvelo kokuqala kusengozini enkulu, okuphoqa iziphathimandla ukuba zithathe isinyathelo esiphuthumayo ukuvimbela umonakalo ongenakuguqulwa emizimbeni yamanzi.
Ukuze kuzanywe ukuletha ukuhleleka kule nkinga yezinto eziphilayo, kuye kwaqalwa isinyathelo esihlose hhayi nje ukuqapha kodwa futhi nokuthatha isinyathelo esiqondile emhlabathini. Umgomo uwukuthuthukisa ulwazi lwamanje mayelana nokuthi lezi zinhlobo zicashe kuphi nokuthi zanda kanjani, okuvumela izinyathelo zokuphatha ukuthi zivumelane neqiniso elishintshayo lesigodi, eliyinkimbinkimbi kakhulu ngenxa yokwehlukahlukana kwezindawo zokuhlala ezilethwayo.
Ukutshalwa kwezimali kanye nezinsuku zokugcina zokuhlenga umfula
I-Segura River Basin Authority (CHS) ithathe isinyathelo sokuqala ngokuqala ithenda yesevisi ekhethekile yokuqapha lezi zilwane ezihlaselayo. Isabelomali esabelwe le misebenzi sicishe sibe yi- €300.000 ngonyaka , ikakhulukazi i-€299.692, okubonisa ukubaluleka okunikezwe ekuvikeleni imithombo yamanzi yomphakathi kule ndawo yaseSpain.
Lesi sivumelwano sizoba nesikhathi sokuqala sezinyanga eziyishumi nambili, yize singase selulwe omunye unyaka uma izidingo zomfula zisidinga. Lesi akusona isenzo esizimele, kodwa kunalokho umzamo oqhubekayo wokulandela iziqondiso zoHlelo Lokuphathwa Kwesitsha Somfula, oluhlose ukufeza isimo esihle semvelo kuwo wonke amanzi angaphakathi nezwe.
Izinhloso eziyinhloko: izimbaza ze-zebra kanye nezinkalankala
Phakathi kwezinhlobo "ezifunwa kakhulu" ezitholwe ochwepheshe bezemvelo, i -zebra mussel kanye ne-Asian clam zihlala ezindaweni eziphezulu. Lezi zinhlobo ze-mollusk zinamandla amangalisayo okuthola amakoloni futhi zingaholela ekuvinjelweni kokudoba i-zebra mussel , kanye nokususa izinhlobo zendawo. Ngakho-ke, kuzothathwa amasampula njalo kokubili izibungu kanye nezinhlobo ezindala emachibini nasezindaweni ezibalulekile zenethiwekhi yomfula.
Kodwa inkinga ayipheli lapho, njengoba izilwane ezihlala emanzini abandayo nazo zibangela izinkinga ezinkulu. Uhlelo lokuqapha luhlanganisa ukulandelela okuphelele kwe- red swamp crayfish, i-signal crayfish , kanye ne-blue crab evame ukwanda. Lezi zinhlobo azigcini nje ngokuncintisana ngokudla kodwa futhi zivame ukushintsha isakhiwo somfula futhi zithinte izitshalo zasemanzini ezinye izilwane zasendaweni ezithembele kuzo.
Ubuchwepheshe obusha bokutholwa kusenesikhathi
Enye yezinto ezintsha ezinkulu zalolu hlelo ukufakwa kwamasu e-DNA yemvelo . Le ndlela ivumela ukutholakala kohlobo oluthile, njenge-zebra mussel, ngokuhlaziya isampula yamanzi lapho isilwane sishiye khona umkhondo waso wezakhi zofuzo, ngaphandle kokudinga ukukubuka ngokomzimba. Kuyithuluzi eliyisisekelo lokuthola kusenesikhathi, okubalulekile uma kukhulunywa ngokumisa ukuhlasela ngaphambi kokuba kusabalale.
Ngaphezu kobuchwepheshe bama-molecule, izindlela zokususa ngesandla kanye nezindlela zokususa ngomshini zizogcinwa ezindaweni lapho ukuhlasela sekuyinto ebonakalayo kakade. Kuzogxilwa futhi ekuphatheni izithiyo eziwela imifula, njengamadamu kanye nama-weirs, ukuze kuqondwe ukuthi lezi zinto zithinta kanjani ukuhamba kwezinhlanzi nokuthi zingase zisize kanjani ekusabalaleni kwezinhlobo zezilwane ezingavamile.
Isimo esisesigodini soMfula iSegura sibonisa okwenzekayo engxenyeni enkulu yeMedithera, lapho kulinganiselwa ukuthi izinhlobo zezinhlanzi ezingezona ezomdabu sezivele zimele iningi elikhulu ezindaweni eziningi zomfula. Lo mzamo wohulumeni uhlose ukuguqula umkhuba oyingozi ngokuqapha njalo imvelo kanye nokungenelela okuqondile, ukuqinisekisa ukuthi izimiso zemvelo zasemanzini zibuyisa enye yebhalansi yazo elahlekile futhi zingamelana kangcono nemiphumela yemisebenzi yabantu kanye nokushintsha kwesimo sezulu.
