Ukwahluka kwamaxesha kunye nabemi ekufudukeni kweWhimbrels kwi-East Asia-Australasian Flyway.

Ijenali:Uphando lweeAvian, i-11 (1), iphepha 1-12.

Iintlobo (Intaka):iiWhimbrels (Numenius phaeopus variegatus)

Inkcazo:

Ukugcina iintaka ezifudukayo kulucelomngeni ngenxa yokuxhomekeka kwazo kwiindawo ezininzi ezikude kumanqanaba ahlukeneyo omjikelo wonyaka wobomi bazo. Ingqikelelo ye "flyway", ebhekiselele kuzo zonke iindawo ezigutyungelwe kukuzala, ukungazali kunye nokufuduka kweentaka, ibonelela ngesikhokelo sentsebenziswano yamazwe ngamazwe yolondolozo. Kwindlela enye yokubhabha, nangona kunjalo, imisebenzi yokufuduka yohlobo olufanayo inokwahluka kakhulu phakathi kwamaxesha onyaka kunye nabemi. Ukucacisa iiyantlukwano zamaxesha onyaka kunye nabemi ekufudukeni luncedo ekuqondeni i-ecology yokufuduka kunye nokuchonga izithuba zolondolozo. Iindlela Ngokusebenzisa umkhondo wesathelayithi silandele umkhondo wee-Whimbrels (i-Numenius phaeopus variegatus) ukusuka kwiindawo ezingazalisiyo e-Moreton Bay (MB) nase-Roebuck Bay (RB) e-Australia kwi-East Asian-Australasian Flyway. Iimvavanyo ze-Mantel zisetyenziselwe ukuhlalutya amandla oqhakamshelwano lokufuduka phakathi kokungazali kunye neendawo zokuzalanisa ze-MB kunye ne-RB yabantu. Uvavanyo lukaWelch lwasetyenziselwa ukuthelekisa imisebenzi yokufuduka phakathi kwabantu ababini naphakathi kokufudukela emantla nakumazantsi. Iziphumo Ngexesha lokufudukela emantla, umgama wokufuduka kunye nobude bexesha bebude kuluntu lwe-MB kune-RB yabemi. Umgama kunye nobude benqwelomoya yomlenze wokuqala ngexesha lokufudukela emantla bekude kuluntu lwe-MB kune-RB yabemi, ebonisa ukuba abantu be-MB bafake amafutha amaninzi ngaphambi kokuba bahambe kwiindawo ezingazaliswanga ukuze baxhase inqwelomoya yabo ende engamisiyo. Abemi be-RB babonise uqhagamshelo lokufuduka olubuthathaka (iindawo zokuzalanisa ezisasazwa kuluhlu lweelongitudi ezingama-60) kunabemi be-MB (iindawo zokuzalela ezigxile kuluhlu lweelongitudi ezi-5 kwiMpuma Ekude yaseRashiya). Xa kuthelekiswa nabemi be-MB, inani labemi be-RB belixhomekeke ngakumbi kwiindawo zokumisa kuLwandle oluMthubi kunye nemimandla yonxweme e-China, apho indawo yokuhlala elwandle ilahlekelwe kakhulu. Nangona kunjalo, inani labantu be-RB linyukile ngelixa inani labantu be-MB lehlile kumashumi eminyaka adlulileyo, iphakamisa ukuba ilahleko yendawo yokuhlala enamanzi kwiindawo zokumisa kunempembelelo encinci kubemi be-Whimbrel, enokusebenzisa iindidi zokuhlala ezahlukeneyo. Iintsingiselo ezahlukeneyo phakathi kwabemi zinokuba ngenxa yamanqanaba ahlukeneyo oxinzelelo lokuzingela kwiindawo zabo zokuzalela. Isiphelo Olu phononongo luqaqambisa ukuba amanyathelo olondolozo anokuphuculwa ngokuqonda umjikelo wonyaka opheleleyo wonyaka wokushukuma kwabantu abaninzi be-Whimbrels mhlawumbi nezinye iintaka ezifudukayo.