Jarida:Binciken Avian, 10 (1), shafi 1-8.
Nau'o'i (Avian):Wigeon Eurasian (Mareca penelope), Duck Falcated (Mareca falcata), Arewacin pintail (Anas acuta)
Takaitawa:
Shaidu sun nuna cewa tsuntsayen lokacin hunturu sun fi maida hankali sosai a manyan tafkuna biyu mafi girma na Kogin Yangtze, tafkin Dong Ting ta Gabas (Lardin Hunan, 29°20′N, 113°E) da tafkin Poyang (Lardin Jiangxi, 29°N, 116°20′E), duk da sauran wuraren da aka ajiye. Duk da yake wannan dangantakar na iya zama saboda mafi girman wuraren zama marasa rudani a cikin manyan tafkuna, mun fahimci kaɗan daga cikin direbobin da ke shafar ɗabi'un ɗaiɗaikun da ke bayan wannan ɗabi'a. Mun bin diddigin motsin hunturu na nau'ikan duck guda uku (Eurasian Wigeon Mareca penelope, Falcated Duck M. falcata da Northern Pintail Anas acuta) ta amfani da masu watsa GPS, nazarin bambance-bambance tsakanin manyan tafkuna biyu da sauran tafkuna masu girma a cikin wuraren zama na ducks, tsawon lokacin zama a kowane tabki da nisan yau da kullun da waɗannan tsuntsayen ke motsawa yayin da suke tafiya. Eurasian Wigeon da Falcated Duck sun zauna sau biyar kuma kusan ana amfani da nau'ikan wuraren zama na musamman a manyan tafkuna guda biyu (91-95% na matsayi) idan aka kwatanta da tsawon lokacin zama a kananan tafkuna, inda suka shafe kwanaki 28-33 a matsakaici (ban da wurin kamawa) kuma sun yi amfani da wasu wuraren zama daban-daban (ciki har da 50% a waje). Nazarin mu shine na farko da ya nuna cewa ɗan gajeren lokacin zama da kuma bambance-bambancen mazaunin da agwagwa ke amfani da su a kan ƙananan tafkuna na iya ba da gudummawa ga bayyana ra'ayoyin yanki na lambobi na waɗannan da sauran nau'ikan a cikin manyan tafkuna a cikin 'yan shekarun nan. Wannan ya kwatanta da raguwar ɗimbin su a ƙananan tafkuna, inda hasarar matsuguni da ƙasƙantar da jama'a suka fi bayyana fiye da manyan tafkuna.
ANA BUGA A NAN:
doi.org/10.1186/s40657-019-0167-4
