Iingcali zenzululwazi ziye zabiza intaka ekwazi ukubhabha ngaphezu kwe-11 lamawaka eekhilomitha ngaphandle kokuphumla
Abantu abaninzi ubuncinane kanye ebomini babo baphupha ngokuba namaphiko, kodwa iintaka azinayo nje le nxalenye yomzimba, kodwa ziyakwazi ukubhabha ixesha elide, ezinye zazo ngaphandle kokuyeka, ukutya kunye namanzi.
Iintaka zinamandla amakhulu abantu abanokuphupha ngawo kuphela - banokubhabha. Ukukwazi ukubhabha kuthetha ukukwazi ukuhamba ngokukhawuleza, kwaye ezinye iintaka, ezifana namarhanisi, zaziwa ngokufuduka ukuya kuthi ga kwi-2,400 km kwiiyure ezingama-24, ubhala uGrunge.
Lo ngumsebenzi oncomekayo, kodwa kukho iintaka ezithatha imigama emide kakhulu. Ngokomzekelo, intaka encinane engaselunxwemeni, ekuthiwa yi<em>bartail godwit, enomlomo omde ngokungaqhelekanga, yeyona ntaka yabhabha inde kwimbali yezazinzulu.
Ngokutsho kweengcali, i-godwit iyakwazi ukunqoba iikhilomitha ezingaphezu kwe-11 lamawaka ngaphandle kokumisa. Okumangalisa nangakumbi kukuba ii<em>godwit zibhabha, nto leyo ethetha ukuba amaphiko azo ahambahamba ngalo lonke ixesha lokubhabha, ngokungafaniyo neealbatross.
Iiflaya ezimangalisayo
Iingcali zilandelele ezi ntaka ukususela ngo-2007 kwaye zafumanisa ukuba zihlala zigubungela ukuya kwi-11 lamawaka eekhilomitha.
Ezinye iintlobo ze godwit zaziwa ngokuhamba ukusuka eOstreliya ukuya eNew Siberia, ngelixa ezinye zifuduka ukusuka eNew Zealand ukuya eAlaska.
Iingcali bezilandelela ezi ntaka ukusukela ngo-2007 kwaye zafumanisa ukuba zihlala zigubungela i-11,000 km. Ngentlakohlaza, ezi ntaka zifumaneka ngaselunxwemeni oluchumileyo, apho zifumana intabalala yokutya phakathi kwamanxweme nakwimigxobhozo. Zikwabeka amaqanda azo kwindlwane ezinengca entlakohlaza.
NgoJuni okanye ngoJulayi baqalisa uhambo lwabo olude olugodukayo, apho abanye bemisa kumazwe aseMerika okanye kuMntla Afrika ukuze bafumane ukutya. Abanye abamisi kwaphela, bachitha iintsuku ezisi-8 kwinqwelomoya ngaphandle kokuphumla.
Imfihlelo kaGodwit
UGodwit unendlela eyahlukileyo yokugcina nokulahla amanqatha kunezinye izidalwa ezininzi.
Njengenkoliso yeentaka ezifudukayo, iigodwit zinobuchule obumangalisayo obuzivumela ukuba zikwazi ukuhambahamba kulo mhlaba. Ukuze zenze uhambo olude ngolo hlobo, iintaka kufuneka zikwazi ukubhadula, zilandele ixesha, ziqikelele umgama, zide zikwazi nokuqikelela imozulu. Kodwa eyona nto ibalulekileyo ekufuneka beyenzile ngaphambi kokuba bahambe ngenqwelo-moya kukutya amafutha awaneleyo ukuze babe namandla ohambo olude.
Kubalulekile ukuqaphela ukuba iigodwits zinendlela eyahlukileyo yokugcina nokulahla amanqatha kunezinye izidalwa ezininzi. Ngoxa umzimba wezi ntaka utshisa amanqatha, uvelisa ikharbon diokside namanzi, agcinwa kumafutha. La “mandla amakhulu” abenza bakwazi ukuphila ngaphandle kokusela amanzi kangangeentsuku ezininzi.
Akunjalo ngaphandle kwebhayoloji
Imizimba neempiko zikaGodwitches zibhabha, kwaye inkqubo yazo yokuphefumla ivumela ukuba ziphile ngeoksijini encinane.
Imizimba namaphiko kaGodwitches asebenza emoyeni, yaye inkqubo yawo yokuphefumla iwavumela ukuba aphile ngeoksijini encinane njengoko ebhabha phezu kolwandle, apho ioksijini incinane kunasemhlabeni.
Uphando lwezazinzulu lubonisa ukuba ngaphambi kokuba zibhabhe, izihlunu zepectoral, intliziyo, nemiphunga yazo ziphindwe kabini okanye kathathu ngobukhulu, ngoxa isisu, isibindi, amathumbu nezintso ziyancipha. Olu tshintsho lubuyela esiqhelweni emva kokuba ezi ntaka zifike apho ziya khona.
Ngaphezu koko, ezi zidalwa ezimangalisayo zinesinye isakhono esinokuthi abantu abaninzi bangathanda ukuba nabo - banokulala ngexesha lokuhamba.
Oku kungenxa yokuba ubuchopho babo abunayo i-unihemispheric, nto leyo ebavumela ukuba bafumane ubuthongo obungeyo-REM. Oku kuthetha ukuba elinye icala lengqondo yabo ilele ngelixa elinye livukile de bafike kwindawo abasingise kuyo.
