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Tasirin illar Allee akan kafuwar yawan jama'ar da ke cikin hatsari: Al'amarin Crested Ibis.

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by Min Li, Rong Dong, Yilamujiang Tuohetahong, Xia Li, Hu Zhang, Xinping Ye, Xiaoping Yu

Tasirin illar Allee akan kafuwar yawan jama'ar da ke cikin hatsari: Al'amarin Crested Ibis.

by Min Li, Rong Dong, Yilamujiang Tuohetahong, Xia Li, Hu Zhang, Xinping Ye, Xiaoping Yu

Nau'o'i (Avian):Crested Ibis (Nipponia nippon)

Jarida:Ilimin Halittar Duniya da Kariya

Takaitawa:

Tasirin Allee, wanda aka ayyana azaman ingantacciyar alaƙa tsakanin dacewa da juzu'i da yawan jama'a (ko girman), suna taka muhimmiyar rawa a cikin haɓakar ƙanana ko ƙananan yawan jama'a. Sake gabatarwa ya zama kayan aiki da aka yi amfani da shi tare da ci gaba da asarar bambancin halittu. Tunda yawan jama'a da aka dawo da farko sun kasance ƙanana, sakamakon Allee yawanci yana wanzuwa lokacin da nau'in halitta ke mamaye sabon wurin zama. Koyaya, shaidar kai tsaye na ingantaccen aiki-dogara a cikin al'ummomin da aka sake fitowa ba safai ba ne. Don fahimtar rawar da tasirin Allee ke takawa wajen daidaita yanayin yawan jama'a da aka sake fito da su bayan fitowar, mun yi nazarin bayanan jerin lokaci da aka tattara daga jama'a guda biyu masu keɓe na Crested Ibis (Nipponia nippon) da aka sake shigar da su a lardin Shaanxi na kasar Sin (Lardin Ningshan da Qianyang). . Mun bincika yuwuwar alaƙa tsakanin girman yawan jama'a da (1) rayuwa da ƙimar haihuwa, (2) ƙimar haɓakar yawan jama'a kowane mutum don wanzuwar tasirin Allee a cikin al'ummomin ibis da aka dawo dasu. Sakamakon ya nuna cewa an gano abubuwan da ke faruwa a lokaci guda na tasirin Allee a cikin rayuwa da haifuwa, yayin da raguwar rayuwar balagaggu da yuwuwar kiwo ta kowace mace ya haifar da tasirin Allee a cikin al'ummar Qianyang ibis, wanda hakan na iya haifar da raguwar yawan jama'a. . A cikin layi daya, iyakance-iyakan abokin aure da tsinkaya a matsayin yuwuwar hanyoyin farawa na tasirin Allee an gabatar da su. Abubuwan da muka gano sun ba da shaidar tasirin Allee da yawa a cikin yawan jama'a da aka sake dawo da su da dabarun kula da kiyayewa don kawar da ko rage ƙarfin tasirin Allee a cikin sake dawo da nau'ikan da ke cikin haɗari na gaba an gabatar da su, gami da sakin adadin mutane masu yawa, ƙarin abinci, da sarrafa mafarauta.