Ijenali:Uphando lweeNtaka, 10(1), iphe.1-8.
Iintlobo (zeentaka):I-wigeon yase-Eurasian (Mareca penelope), Idada eliyiFalcated (Mareca falcata), i-pintail yaseMntla (Anas acuta)
Isishwankathelo:
Ubungqina bubonisa ukuba iintaka zasemanzini ezihlala ebusika ziye zagxila kakhulu kumachibi amabini amakhulu eYangtze River Floodplain, iEast Dong Ting Lake (iPhondo laseHunan, 29°20′N, 113°E) kunye nePoyang Lake (iPhondo laseJiangxi, 29°N, 116°20′E), xa kuthelekiswa namanye amachibi, nangona kusekwe iindawo zokugcina izilwanyana kwezinye iindawo. Nangona olu lwalamano lunokwenzeka ngenxa yobuninzi beendawo zokuhlala ezingaphazanyiswanga kumachibi amakhulu, asiqondi kakuhle ngabaqhubi abachaphazela ukuziphatha komntu ngamnye okubangela olu tyekelo. Silandelele iintshukumo zasebusika zeentlobo ezintathu zamadada (i-Eurasian Wigeon Mareca penelope, iFalcated Duck M. falcata kunye neNorthern Pintail Anas acuta) sisebenzisa ii-GPS transmitters, sihlola umahluko phakathi kwamachibi amabini amakhulu kunye namanye amachibi amancinci ekusetyenzisweni kweendawo zokuhlala zamadada, ixesha lokuhlala echibini ngalinye kunye nomgama wemihla ngemihla ohanjiswa ziintaka eziphawulweyo ngelixa zikwiindawo ezinje. I-Eurasian Wigeon kunye neFalcated Duck zahlala ixesha elide ngokuphindwe kahlanu kwaye zazisebenzisa phantse kuphela iintlobo zendalo zokuhlala kumachibi amabini amakhulu (91‒95% yeendawo) xa kuthelekiswa nobude bexesha lokuhlala kumachibi amancinci, apho zachitha iintsuku ezingama-28‒33 ngokomndilili (ngaphandle kwendawo yokubamba) kwaye zasebenzisa ezinye iindawo zokuhlala ezahlukeneyo (kuquka malunga nama-50% ngaphandle kwamachibi). Uphononongo lwethu lolokuqala ukubonisa ukuba ixesha elifutshane lokuhlala kunye nokusetyenziswa kweendawo zokuhlala ezahlukeneyo ngamadada kumachibi amancinci kunokunceda ekuchazeni ukuxinana okubonakalayo kwengingqi kwamanani akhoyo kwezi ntlobo kunye nezinye iintlobo kumachibi amakhulu kwiminyaka yakutshanje. Oku kuthelekiswa nokuncipha kobuninzi bazo kumachibi amancinci, apho ukulahleka kwendawo yokuhlala kunye nokonakala kwayo kuye kwabonakala ngakumbi kunakumachibi amakhulu.
IMPAPASHO IYAFUMANEKA KWI:
https://doi.org/10.1186/s40657-019-0167-4
