Usayizi ubalulekile: amadada asebusika ahlala isikhathi eside futhi asebenzisa izindawo zokuhlala ezimbalwa emachibini amakhulu aseShayina.

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

Izinhlobo (Izinyoni):I-Eurasian wigeon (i-Mareca penelope), idada elikhohliwe (Mareca falcata), i-Northern pintail (Anas acuta)

Abstract:

Ubufakazi bubonisa ukuthi izinyoni zasemanzini zasebusika sezigxile kakhulu emachibini amabili amakhulu e-Yangtze River Floodplain, e-East Dong Ting Lake (eSifundazweni saseHunan, 29°20′N, 113°E) kanye neChibi LasePoyang (IsiFundazwe saseJiangxi, 29°N, 116°20′E), naphezu kwezinye izindawo ezigcina amachibi. Nakuba lobu budlelwano kungenzeka bubangelwe yizinga elikhulu lezindawo zokuhlala ezingaphazamiseki emachibini amakhulu, sikuqonda kancane abashayeli abathinta ukuziphatha komuntu ngamunye okubangela lokhu kuthambekela. Silandele ukunyakaza kwasebusika kwezinhlobo ezintathu zamadada (i-Eurasian Wigeon Mareca penelope, i-Falcated Duck M. falcata kanye ne-Northern Pintail Anas acuta) sisebenzisa ama-transmitters e-GPS, sihlola umehluko phakathi kwamachibi amabili amakhulu namanye amachibi amancane asetshenziswa endaweni yamadada, isikhathi sokuhlala echibini ngalinye kanye nezinyoni ezimakiwe nsuku zonke ngenkathi zihanjiswa yizinyoni ezimakiwe nsuku zonke. I-Eurasian Wigeon kanye ne-Falcated Duck yahlala isikhathi eside ngokuphindwe kahlanu futhi yacishe yasebenzisa kuphela izinhlobo zendawo yokuhlala yemvelo emachibini amabili amakhulu (91‒95% wezindawo) uma kuqhathaniswa nobude besikhathi sokuhlala emachibini amancane, lapho yachitha khona izinsuku ezingu-28‒33 ngokwesilinganiso (ngaphandle kwendawo yokuthunjwa) futhi yaxhaphaza izindawo eziningi ezihlukene ngaphandle kwe-cluding 5%. Ucwaningo lwethu olokuqala olubonisa ukuthi ubude obufushane bokuhlala kanye nokusetshenziswa kwendawo okuhlukahlukene kwamadada emachibini amancane kungase kube nomthelela ekuchazeni inani elibonakalayo lesifunda lezinombolo ezikhona zalezi nezinye izinhlobo zezilwane emachibini amakhulu kunawo wonke eminyakeni yamuva. Lokhu kuqhathaniswa nokuncipha kwazo ngobuningi emachibini amancane, lapho ukulahleka kwezindawo zokuhlala kanye nokuwohloka kuye kwabonakala kakhulu kunasemachibini amakhulu.