Mwaka uye mutsauko wehuwandu mukutama kweWhimbrels muEast Asia-Australasian Flyway.

Journal:Avian Research, 11(1), p.1-12.

Zvisikwa(Avian):Whimbrels (Numenius phaeopus variegatus)

Abstract:

Kuchengetedza shiri dzinotama kunonetsa nekuda kwekuvimba kwadzo nenzvimbo dzakawanda dziri kure pamatanho akasiyana ehupenyu hwadzo hwepagore. Pfungwa ye "flyway", iyo inoreva nzvimbo dzose dzakafukidzwa nekuberekesa, kusabereka, uye kutama kweshiri, inopa hurongwa hwekushandira pamwe kwenyika dzakawanda kuchengetedza. Nenzira imwe cheteyo, zvisinei, kutama kwemarudzi mamwe chete kunogona kusiyana zvikuru pakati pemwaka nenhamba. Kujekesa musiyano wemwaka uye wehuwandu mukutama kunobatsira pakunzwisisa kutama kwezvipenyu uye nekuona mikaha yekuchengetedza. Nzira Tichishandisa satellite-kuronda takaronda kutama kweWhimbrels (Numenius phaeopus variegatus) kubva kunzvimbo dzisingaberekere paMoreton Bay (MB) neRoebuck Bay (RB) muAustralia muEast Asian-Australasian Flyway. Miedzo yeMantel yakashandiswa kuongorora kusimba kwekutama kwekubatana pakati peasina kubereka uye nzvimbo dzekuberekesa dzeMB neRB vanhu. Muedzo weWelch wakashandiswa kuenzanisa zviitiko zvekutama pakati pevanhu vaviri uye pakati pekuenda kuchamhembe nekumaodzanyemba. Mibairo Panguva yekutamira kuchamhembe, nhambwe yekufamba uye nguva yaive yakareba kune huwandu hweMB pane huwandu hweRB. Chinhambwe uye nguva yekubhururuka kwegumbo rekutanga panguva yekutamira kuchamhembe kwaive kwakareba kune huwandu hweMB pane huwandu hwevanhu veRB, zvichiratidza kuti vanhu veMB vaise mafuta akawanda vasati vabva kunzvimbo dzisina kuberekesa kuti vatsigire ndege yavo yakareba isingamire. Huwandu hweRB hwakaratidza kusasimba kwekutama kwekubatana (nzvimbo dzekuberekesa dzinopararira pamusoro pehupamhi hwemakumi matanhatu longitudes) pane huwandu hweMB (nzvimbo dzekuberekesa dzinotarisa mumhando ye5 longitudes kuFar Eastern Russia). Kuenzaniswa nehuwandu hweMB, huwandu hweRB hwainyanya kutsamira panzvimbo dzekumira muYellow Sea uye nharaunda dzemahombekombe muChina, uko nzvimbo yekugara yakarasikirwa zvakanyanya. Nekudaro, huwandu hweRB hwakawedzera apo huwandu hweMB hwakadzikira mumakumi emakore apfuura, zvichiratidza kuti kurasikirwa kwenzvimbo yekugara munzvimbo dzekumira kwakave nemhedzisiro shoma pahuwandu hweWhimbrel, iyo inogona kushandisa marudzi akasiyana ekugara. Maitiro akasiyana pakati pehuwandu anogona kunge ari nekuda kwemadhigirii akasiyana ekudzvinyirirwa kwekuvhima munzvimbo dzavanoberekera. Mhedziso Chidzidzo ichi chinoburitsa kuti matanho ekuchengetedza anogona kuvandudzwa nekunzwisisa hupenyu hwegore huzere hwekufamba kwenhamba dzakawanda dzeWhimbrels pamwe nedzimwe shiri dzinotama.