Lwenza ntoni utshintsho lwemozulu kwiilwandle zethu?

Njengoko besithethile ngamanye amaxesha, utshintsho lwemozulu luchaphazela zonke iimbombo zomhlaba. Kwaye, kwakungayi kuba kuncinci kwiilwandle nakwiilwandle. Iziphumo zayo ezitshabalalisayo ziyatshintsha iimeko zokuphila kuzo zonke iilwandle zomhlaba.

Okwangoku, Iziphumo ezenza olona tshintsho kwiimeko zokuphila elwandle kukwanda kwamaqondo obushushu bamanzi ngaphezulu. Lwenza ntoni utshintsho lwemozulu kwiilwandle zethu?

Ukwanda kwamaqondo obushushu elwandle

Amaqondo obushushu bamanzi angaphezulu ayenyuka kwaye ngayo, phytoplankton, esisiseko sako konke ukutya kwetyathanga lokutya elwandle, liyancipha. Iziganeko zemozulu kunye notshintsho lobushushu lubangela utshintsho kumaza olwandle.

Utshintsho kumaza olwandle lungazichaphazela njani iintlobo? Ilula kakhulu, i-phytoplankton yenziwe zizityalo ezincinane kakhulu ezichuma kwaye zifumaneka emanzini. Njengomsinga kunye neepateni zabo zokujikeleza kutshintsha, ukutya kweentlobo ezininzi ezizigcinayo kuyatshintsha indawo. Ngale ndlela, banyanzela iintlobo ukuba zihambe kwaye zitshintshe indawo yokuhlala, zibeka emngciphekweni wokujongana nezinye iintlobo zezilwanyana ezinobungozi kwaye zizinyanzele ukuba zilungele iimeko ezintsha.

Konke oku kubangela iimpembelelo ezingalunganga ngakumbi kwizinto eziphilayo zaselwandle kunye nokunciphisa amathuba okusinda kweentlobo ezininzi.

Isifundo ngotshintsho lwemozulu kwiilwandle

Isifundo sichonge iindawo ezintandathu eziphambili zeplanethi ekufuneka zikhuselwe ukuba ubomi buqhubeka ukubakho elwandle. Olu phononongo luqhutywa ngabaphandi base-Australia, New Zealand kunye nabaseSpain. Ukuphanda ngeempawu zendalo kunye nendlela utshintsho lwemozulu oluchaphazela ngayo, basebenzise idatha evela kwiqela leesathelayithi eziqokelelwe kule minyaka ingama-30 idlulileyo ukufumanisa ukuba utshintsho lwemozulu lubuchaphazela njani ulwandle lweplanethi yonke.

Ndiyabulela kuphuhliso lwetekhnoloji, kuye kwenzeka ukufumana imifanekiso yendlela utshintsho lwemozulu oluchaphazela ngayo ulwandle kwihlabathi liphela kwisisombululo somzobo asikafikelelwa kude kube ngoku. Nangona ifiziksiki esisiseko isithi iimeko kulwelo oluphakathi ziphela zifana kuyo yonke indawo, kubukhulu bolwandle izinto azifani. Ke ngoko, ukufudumala kwehlabathi akufani kuwo onke amanzi kwaye ayingombandela nje wobubanzi.

Iziphumo zotshintsho lwemozulu kwiilwandle

Iziphumo zokutshintsha kwemozulu zibangela ulwandle, okanye ubuncinci obona bukhawulezileyo kwaye kwangoko, zezi:

• Ukufudumala kwamanzi angaphezulu
• Ukuhla kwemveliso yeklorophyll kwizityalo
• Utshintsho kwiipatheni zolwandle

Olu phando lupapashiwe kwi Uphuhliso lwezesayensi, kwaye ibonisa iindlela ezimbini ezichaseneyo. Kwisandle esinye, Ukufudumeza kwamanzi aphezulu akuyekanga ukwanda ukusukela ngeminyaka yoo-80 kwinkulungwane ephelileyo. Kwelinye icala, uxinzelelo lwechlorophyll kwimitha nganye yee-cubic aluyekanga ukuncipha ukusukela ngoko. Umsebenzi uphinde walinganisa umahluko wesithathu: imisinga yolwandle, abo banoxanduva lokusasaza ubushushu kuwo wonke umhlaba kwaye, ngokudibeneyo nentshukumo yemozulu, nazo ezo zezulu. Nangona kukho ukungafani okukhulu, ngokubanzi le milambo yolwandle iyacotha.

Ukudibanisa zonke ezi zinto yindlela izazinzulu ezikwazileyo ukuzichaza kwindawo nganye kwaye zikwazile ukulinganisa iimpembelelo zotshintsho lwemozulu kwinqanaba lengingqi nelasekhaya. Imimandla ye-polar yezo zinengxaki yokunyuka okuthe kratya kumaqondo obushushu bamanzi abo Kwaye kulapho, xa amanzi amnandi anyibilikayo eza kusebenza, aphazamisa imisinga yolwandle. Ngokubhekisele kwiyantlukwano yendalo, omabini amaNtla eAtlantic kunye nomantla wePasifiki bafumana ukufudumala okunempembelelo kwindalo yezilwanyana zaselwandle engekamiswa.

Njengoko ubona, utshintsho lwemozulu luchaphazela zonke iimbombo zomhlaba kwaye kokukhona kufundwa, kokukhona ulwazi ukuba iziphumo ziyinyani kwaye aziyeki ukwanda.