Mwero wemvura unokanganisa kuwanikwa kwenzvimbo dzekudya dzakakwana kune shiri dzemvura dziri kutyisidzirwa

Journal:Ecology uye evolution, 7(23), pp.10440-10450.

Zvisikwa(Avian):Huru chena-kumberi hanzi (Anser albifrons), Aswan hanzi (Anser cygnoides)

Abstract:

Nzvimbo dzakakura dzemvura paPoyang Lake, dzakagadzirwa nekuchinja kunoshamisa kwemwaka wemvura, inoumba nzvimbo huru yechando yevanotama Anatidae kuChina. Kudzikiswa kwenzvimbo ine mvura mukati memakore gumi nemashanu apfuura kwakatungamira kune zvikumbiro zvekuvaka Damu rePoyang kuti richengetedze huwandu hwemvura yemuchando mukati medhamu. Kushandura hurongwa hwemvura huchakanganisa shiri dzemvura zvinoenderana nekuchinja kwehuwandu hwemvura pakuwanikwa kwechikafu uye kuwanikwa. Isu takatsvaga marudzi maviri ehanzi ane maitiro akasiyana ekudyisa (great white-fronted geese Anser albifrons [mafuro emhuka] uye swan geese Anser cygnoides [tuber-feeding species]) munguva dzechando mbiri dzine mazinga emvura akasiyana (kuramba kuderera muna 2015; yakaramba iine mvura yakakwira muna 2016, yakafanana neiyo yakafanotaurwa yekuchinja kwemvura yePoyang padanho rekudyara kwemvura). pazvinomera nekukwirira. Muna 2015, hanzi dzakachena-kumberi dzakashandisa madhaka madhaka akatevedzana, achidya mapfumo mapfupi ane zvinovaka muviri, ukuwo swan geese aichera pasi pemvura kumucheto kwemvura kune machubhu. Iyi yakakosha inosimba ecotone inotevedzana inofumura chikafu chepasi pemvura uye inotsigira yepakutanga-nhanho graminoid kukura panguva yekuderera kwemvura. Munguva yakadzikama yemvura yakakwira muna 2016, marudzi ese ari maviri akasarudza madhaka, asiwo kusvika padanho rakakura rekugara ane nguva yakareba yakasimbiswa mwaka wegraminoid sward nekuti kuwana machubhu uye kukura kutsva kwegraminoid kwakaganhurirwa pasi pemvura yakakwira. Yakareba yakasimbiswa graminoid sward inopa zvishoma zvine simba purofiti yefurawa yemarudzi ese. Kuderera kwakanyanya kwenzvimbo yekugara yakakodzera uye kuvharirwa kumafuro ane purofiti shoma nemvura yakakwira kungangoderedza kugona kwegezi kuunganidza zvitoro zvemafuta zvakaringana kuti zvifambe, uye zvinogona kukonzeresa kurarama nekubereka kunotevera. Zvatinowana zvinoratidza kuti mvura yakakwira muPoyang Lake inofanira kuchengetwa munguva yechirimo, asi ichitenderwa kudzikira zvishoma nezvishoma, zvichiratidza nzvimbo itsva munguva yechando kuitira kuti shiri dzemvura dziwane mukana kubva kumasangano ese ekudyisa.