Oshaka yizona ezidla kakhulu olwandle, kepha hhayi ngenxa yalesi sizathu, bakhululiwe ezinsongweni ezinamandla abantu abahlala bezethula kubantu. Ukwehla koshaka kungadala ushintsho ekubunjweni komzimba wenhlanzi eziguquke kuyo yonke imvelo.
Ziyoba njani izinhlanzi ngaphandle kokubakhona koshaka?
Ukulungiswa kwezinhlanzi
Izinhlanzi zakha izingxenye zomzimba ukuze zivumelane nezimo kukho konke ukuvela kohlobo. Isibonelo, baba namehlo amakhulu ukuze babone kangcono, amaphiko okubhukuda ngokushesha futhi abalekele izilwane ezidla ezinye ngisho nolwelwesi lwamafinyila ukuzivikela kubuthi bolwelwe oluthile olunjenge-anemones.
Uma ushaka, yini iyisilwane esidla ulwandle esiyinhloko, iqala ukunciphisa nokuqeda inani labantu ngenxa yesenzo somuntu, izinhlanzi ngeke zidinge izitho ezinjalo eziyinkimbinkimbi ukuze zibalekele kubo, ngakho-ke ukwakheka kwezinhlanzi kungashintsha emakhulwini eminyaka.
Isibonelo, izinhlobo ezithile zezinhlanzi zingayeka ukukhula ngamehlo amakhulu kangako noma zenze imisila emincane, ngoba isidingo sazo sokubhukuda ngokushesha siphele.
Lokhu kukhonjiswa kungumphumela wocwaningo ngezinhlobo ezahlukahlukene zezinhlanzi eRowley Shoals naseScott Reef, izinhlelo ezimbili ezingomakhelwane zamakhorali enyakatho-ntshonalanga ye-Australia, eziphethe ngokuthi lezi zinguquko zingathinta imvelo.
"Umehluko ekubunjweni komzimba wenhlanzi ohlala ezinhlelweni ezimbili zamakhorali kungaba nemiphumela ekuhambeni kwamandla emvelweni futhi ekugcineni kuthinta iwebhu yokudla”Kusho umholi womsebenzi, uShanta Barley, wase-University of Western Australia (UWA).
Umehluko omkhulu osungulwe phakathi kwezixhobo zamakhorali ezimbili ezifundwe ngukuthi ukudoba akuvumelekile eRowley Shoals naseScott Reef, inqobo nje uma kungokuhweba. Ukudoba oshaka kule ndawo yamakhorali sekuqhubeke isikhathi esingaphezu kwekhulu futhi, ngenxa yalokho, inani loshaka liyancipha.
Imithelela koshaka
Ngemuva kwamashumi eminyaka adlule, ukudotshwa koshaka ngenjongo yokuhweba kwande kakhulu esifundeni. Kanjalo nokufunwa kwamaphiko oshaka ezimakethe zase-Asia. Lokhu, njengoba ungalindela, Kubangela umonakalo omkhulu kubantu bakashaka eScott Reef.
Abaphenyi baqoqe izinhlanzi ezingama-611 zezinhlobo eziyisikhombisa ezindaweni zombili base bezithwebula. Ukubona umehluko we-morphological yenhlanzi ngayinye, izithombe zihlaziywa ngamadijithi ukubona ububanzi nobude bomzimba wenhlanzi ngayinye, indawo yamehlo nomsila.
Izinguquko zesimilo
Ngemuva kwemiphumela yokuhlaziywa kwezithombe ze-morphology yenhlanzi kuzo zombili izixhobo zamakhorali, kutholakele ukuthi eScott Reef amehlo ezinhlanzi avame ukuba yizisulu zoshaka mancane ngama-46% kunezinhlobo zezinhlobo ezifanayo abahlala eRowley Shoals.
Umphumela ofanayo utholakele ekuhlaziyweni kwesilinganiso somsila, ngoba incane ngama-40%. Lokhu kungenxa yokuthi izinhlanzi azidingi imisila emikhulu noma amehlo ukuze zibone futhi zibalekele oshaka, ngoba inani labantu liyehla.
"Amehlo abalulekile ekutholeni izilwane ezidla ezinye, ikakhulukazi ezimeni eziphansi, lapho oshaka bevame ukuzingela inyamazane yabo, futhi ukuma komsila kukuvumela ukuba kwandise ijubane futhi babalekele oshaka," kusho uHammerschlag, ongumbhali wombhali wocwaningo.
Njengoba ukwazi ukubona, umuntu ubangela ushintsho ku-morphology yenhlanzi, ngoba imisebenzi yayo yokubona nokubalekela izidlo zayo azisadingeki kangako. Kancane kancane, ngokuhamba kweminyaka, i-morphology yalezi zinhlanzi ingahluka ngokuphelele kolunye uqu lwamakhorali nakwezinye, naphezu kokuvela kohlobo olufanayo.