Chinyorwa:Tsvagiridzo yeNhunzi, 10(1), mapeji 1-8.
Mhando dzeshiri (Avian):Hove dzeEurasian wigeon (Mareca penelope), Dhadha reFalcated (Mareca falcata), Northern pintail (Anas acuta)
Pfupiso:
Humbowo hunoratidza kuti shiri dzemumvura dzinogara munguva yechando dzave kunyanya kuungana mumadhamu maviri makuru eYangtze River Floodplain, East Dong Ting Lake (Hunan Province, 29°20′N, 113°E) nePoyang Lake (Jiangxi Province, 29°N, 116°20′E), zvichienzaniswa nemamwe madhamu, pasinei nekugadzwa kwenzvimbo dzinochengeterwa mvura kune dzimwe nzvimbo. Kunyange hazvo hukama uhwu hungangodaro hwakakonzerwa nehuwandu hwakawanda hwenzvimbo dzisina kukanganiswa mumadhamu makuru, hatinzwisisi zvakawanda nezvezvinokonzeresa izvi. Takatevedza kufamba kwemhando nhatu dzedhadha munguva yechando (Eurasian Wigeon Mareca penelope, Falcated Duck M. falcata naNorthern Pintail Anas acuta) tichishandisa maGPS transmitters, tichiongorora mutsauko uripo pakati pemadhamu maviri makuru nemamwe madhamu madiki mukushandiswa kwenzvimbo dzedhadha, nguva yekugara padhamu rega rega uye daro rezuva nezuva rinofambiswa neshiri dzine tag dziri panzvimbo idzi. Duku reEurasian Wigeon neFalcated Duck rakagara kwenguva yakareba kashanu uye rakashandisa mhando dzenzvimbo dzechisikigo mumadhamu maviri makuru (91‒95% yenzvimbo) zvichienzaniswa nenguva yekugara mumadhamu madiki, kwavakapedza mazuva 28‒33 paavhareji (tisingabatanidzi nzvimbo yakatorwa) uye vakashandisa nzvimbo dzakasiyana-siyana (kusanganisira anenge 50% kunze kwemadhamu). Chidzidzo chedu ndicho chekutanga kuratidza kuti kugara kwenguva pfupi uye kushandiswa kwakasiyana-siyana kwemadhadha mumadhamu madiki zvinogona kubatsira kutsanangura huwandu hwenzvimbo dziripo hwemhando idzi nedzimwe mhuka mumadhamu makuru mumakore achangopfuura. Izvi zvichienzaniswa nekudzikira kwehuwandu hwavo mumadhamu madiki, uko kurasikirwa kwenzvimbo nekuora kwave kuri pachena kupfuura mumadhamu makuru.
BHUKU RINOWANIKA PA:
https://doi.org/10.1186/s40657-019-0167-4
