Ubukhulu bubalulekile: amadada asebusika ahlala isikhathi eside futhi asebenzisa izindawo ezimbalwa zokuhlala emachibini amakhulu aseShayina.

Ijenali:Ucwaningo Lwezinyoni, 10(1), amakhasi 1-8.

Izinhlobo (zezinyoni):I-wigeon yase-Eurasian (i-Mareca penelope), Idada eliyi-Falcated (i-Mareca falcata), i-pintail yaseNyakatho (i-Anas acuta)

Isifinyezo:

Ubufakazi busikisela ukuthi izinyoni zasemanzini zasebusika sezigxile kakhulu emachibini amabili amakhulu aseYangtze River Floodplain, i-East Dong Ting Lake (iSifundazwe saseHunan, 29°20′N, 113°E) kanye nePoyang Lake (iSifundazwe saseJiangxi, 29°N, 116°20′E), uma kuqhathaniswa namanye amachibi, naphezu kokusungulwa kwezindawo zokugcina izilwane kwenye indawo. Nakuba lobu budlelwano kungenzeka bubangelwa indawo yokuhlala engaphazanyiswa emachibini amakhulu, asiqondi okuningi ngabashayeli abathinta ukuziphatha komuntu ngamunye ngemuva kwalokhu kuthambekela. Silandelele ukunyakaza kwasebusika kwezinhlobo ezintathu zamadada (i-Eurasian Wigeon Mareca penelope, i-Falcated Duck M. falcata kanye ne-Northern Pintail Anas acuta) sisebenzisa ama-GPS transmitter, sihlola umehluko phakathi kwamachibi amabili amakhulu kanye namanye amachibi amancane ekusetshenzisweni kwezindawo zokuhlala zamadada, isikhathi sokuhlala echibini ngalinye kanye namabanga ansuku zonke ahanjiswa yizinyoni eziphawuliwe ngenkathi zikulezi zindawo. I-Eurasian Wigeon kanye ne-Falcated Duck zahlala isikhathi eside ngokuphindwe kahlanu futhi cishe zasebenzisa izinhlobo zemvelo zokuhlala emachibini amabili amakhulu (91‒95% wezindawo) uma kuqhathaniswa nobude besikhathi sokuhlala emachibini amancane, lapho zachitha khona izinsuku ezingu-28‒33 ngokwesilinganiso (ngaphandle kwendawo yokubamba) futhi zasebenzisa izindawo eziningi ezahlukene zokuhlala (kufaka phakathi cishe u-50% ngaphandle kwamachibi). Ucwaningo lwethu lulokuqala ukukhombisa ukuthi ukuhlala isikhathi esifushane kanye nokusetshenziswa kwezindawo zokuhlala okuhlukahlukene ngamadada emachibini amancane kungasiza ekuchazeni ukuqoqwa okubonakalayo kwesifunda kwenani elikhona lalezi nezinye izinhlobo emachibini amakhulu eminyakeni yamuva nje. Lokhu kuqhathaniswa nokuncipha kwenani lazo emachibini amancane, lapho ukulahlekelwa kanye nokuwohloka kwendawo yokuhlala kuye kwabonakala khona kakhulu kunasemachibini amakhulu.