Chinyorwa:Tsvagiridzo yeNhunzi, 10(1), p.19.
Mhando dzeshiri (Avian):MaGeese eGreater White-fronted (Anser albifrons)
Pfupiso:
Dzidziso yekutama inoratidza, uye zvimwe zvidzidzo zvinoratidza, kuti kuti makwikwidzirwe nzvimbo dzakanakisisa dzekuberekesa uye kuwedzera kubudirira kwekubereka, shiri dzinofamba daro refu dzinowanzo tora nzira yekuderedza nguva panguva yekutama kwechirimo, zvichikonzera kutama kwenguva pfupi kwechirimo zvichienzaniswa nekwakaitika mumatsutso. Tichishandisa ma GPS/GSM transmitters, takatevera kutama kwakazara kwe11 Greater White-fronted Geese (Anser albifrons) pakati pekumaodzanyemba kwakadziva kumabvazuva kweChina neRussian Arctic, kuti tiratidze nguva yekutama uye nzira dzevanhu vekuEast Asia, uye kuenzanisa musiyano wenguva pakati pekutama kwechirimo nekumatsutso kwevanhu ava. Takaona kuti kutama muchirimo (mazuva 79 ± 12) kunotora nguva inopfuura kaviri kuti kufukidza daro rakafanana nerakaitika mumatsutso (mazuva 35 ± 7). Musiyano uyu wenguva yekutama wakanyanya kutsanangurwa nenguva yakawanda inopedzerwa muchirimo (mazuva 59 ± 16) pane mumatsutso (mazuva 23 ± 6) panzvimbo dzekumira zvakanyanya. Tinofunga kuti mahanzi aya, anofungidzirwa kuti anorera mhuka zvishoma, aipedza nguva inosvika zvikamu zvitatu muzvina zvenguva yekutama panzvimbo dzekumira muchirimo kuti awane nzvimbo dzekuchengetera simba rekushandisa pakubereka, kunyange hazvo tisingakwanise kuramba fungidziro yekuti nguva yekunyunguduka kwechirimo yakabatsirawo pakumira kwenguva refu. Mumatsutso, akawana nzvimbo dzekuchengetera simba remagetsi dzinodiwa munzvimbo dzekuberekera dzakakwana kusvika kunzvimbo dzekuNortheast China dzisina kumira, izvo zvakaderedza nguva yekumira mumatsutso uye zvakaita kuti kufamba kwematsutso kukurumidze kupfuura muchirimo.
BHUKU RINOWANIKA PA:
https://doi.org/10.1186/s40657-019-0157-6
