Mujalla:Ilimin Halittar Ruwa Mai Tsami, 64(6), shafi na 1183-1195.
Nau'in Avian (Avian):Goose na wake (Anser fabalis), Goose mai farin gaba (Anser erythropus)
Takaitaccen Bayani:
Saurin saurin sauyin muhalli da ɗan adam ke haifarwa yana haifar da babban ƙalubale ga namun daji. Ikon dabbobin daji na daidaitawa da canje-canjen muhalli yana da sakamako mai mahimmanci ga lafiyarsu, rayuwarsu, da kuma haihuwa. Sauƙin hali, daidaitawa nan take na ɗabi'a don mayar da martani ga bambancin muhalli, na iya zama mahimmanci musamman don jure wa canjin ɗan adam. Babban manufar wannan binciken shine a auna martanin nau'ikan goose guda biyu masu sanyin hunturu (bean goose Anser fabalis da ƙananan goose fari-gaban Anser erythropus) ga mummunan yanayin zama a matakin jama'a ta hanyar nazarin ɗabi'ar neman abinci. Bugu da ƙari, mun gwada ko ƙarfin hali na iya canza yanayin trophic. Mun kwatanta halayen neman abinci kuma mun ƙididdige kewayon gida na yau da kullun (HR) na geese ta amfani da bayanan bin diddigin tsarin matsayi na duniya. Mun ƙididdige yankunan ellipse na yau da kullun don ƙididdige faɗin niche ta amfani da ƙimar δ13C da δ15N na kowane geese. Mun haɗa ƙarfin hali da ingancin zama ta amfani da samfuran ANCOVA (nazarin covariance). Mun kuma gwada alaƙar da ke tsakanin yankunan ellipse na yau da kullun da HR ta amfani da samfurin ANCOVA. Mun sami bambance-bambance masu yawa a cikin halayen neman dabbobin daji tsakanin shekaru a yankin neman dabbobinsu na yau da kullun, nisan tafiya da gudu, da kuma kusurwar juyawa. Musamman ma, tsuntsayen sun ƙara yankin neman dabbobinsu don biyan buƙatunsu na yau da kullun don mayar da martani ga mummunan yanayin mazauninsu. Sun tashi cikin nutsuwa kuma suna tafiya cikin sauri da tsayi a kowace rana. Ga ƙananan tsuntsayen da ke fuskantar barazanar fari, duk canje-canjen halaye suna da alaƙa da ingancin mazauninsu. Ga tsuntsayen wake, HR da kusurwar juyawa kawai suna da alaƙa da ingancin mazauninsu. Tsuntsayen, musamman ƙananan tsuntsayen da ke fuskantar fari, wataƙila suna da matsayi mafi girma na trophic a ƙarƙashin mummunan yanayi. Bincikenmu ya nuna cewa tsuntsayen da ke fuskantar hunturu sun nuna babban matakin ƙarfin hali. Duk da haka, ƙarin halayen neman dabbobin daji a ƙarƙashin mummunan yanayin mazauninsu bai haifar da babban yanki na trophic ba. Samuwar mazaunin zai iya zama alhakin bambance-bambancen martanin HR na neman dabbobin daji da kuma yanayin isotopic ga canjin muhalli da ɗan adam ya haifar. Saboda haka, kiyaye tsarin ruwa na halitta a lokacin mawuyacin lokaci (watau Satumba-Nuwamba) don tabbatar da cewa akwai wadataccen albarkatun abinci yana da mahimmanci ga makomar yawan tsuntsayen geese a cikin hanyar Flyway ta Gabashin Asiya-Australia.
BUGA AKWAI A:
https://doi.org/10.1111/fwb.13294
