Misali na Tambayoyin Tattaunawa kan Rarraba Fure da Fauna a Duniya A cewar Alfred Russel Wallace
Rarraba da rarraba shuke-shuke da fauna a faɗin Duniya wani abu ne mai ban sha'awa wanda ya jawo hankalin masana kimiyya tsawon ƙarni da yawa. Ɗaya daga cikin manyan mutane waɗanda suka ƙirƙiro muhimman ka'idoji da ra'ayoyi a wannan fanni shine Alfred Russel Wallace. A cikin wannan labarin, za mu tattauna wannan ra'ayin rarrabawa, tare da misalai na matsaloli da tattaunawa, don fahimtar gudummawar Wallace ga nazarin halittu.
Gabatarwa ga Alfred Russel Wallace
Alfred Russel Wallace masanin ilmin halittu ne kuma ɗan ƙasar Ingila wanda aka sani da ɗaya daga cikin waɗanda suka fara kafa ka'idar juyin halitta ta hanyar zaɓin yanayi, tare da Charles Darwin. Baya ga ka'idar juyin halitta, muhimman gudummawar da Wallace ya bayar sun kasance a fannin nazarin halittu, inda ya haɓaka ra'ayin Layin Wallace, wanda ke raba yankunan ƙasa bisa ga shuke-shuke da fauna.
Layin Wallace da Yankin Rarrabawa
Wallace ya gano wata layi ta tunani, wadda aka sani da Layin Wallace, wadda ta raba yankunan dajin namun daji na Asiya da Australasia. Wannan layi ya ratsa tsakanin tsibiran Bali da Lombok da kuma tsakanin Kalimantan da Sulawesi a Indonesia. Binciken Wallace ya nuna cewa duk da kusancinsu, nau'in da ke gefen wannan layin ya bambanta sosai.
Tsarin Rayuwar Wallace
Wallace ya raba duniya zuwa yankuna daban-daban na yanayin ƙasa bisa ga tsarin rarrabawar flora da fauna. Yankunan da aka fi sani sune Neotropical, Afrotropical, Indomalayan, Palearctic, Nearctic, Australasian, da Oceanic. Kowane yanki yana da takamaiman halaye da suka shafi nau'in da ke zaune a cikinsa.
Tambayoyi Misali Kan Tattaunawa Kan Rarraba Fure da Fauna
Domin fahimtar yadda ake rarraba flora da fauna a cewar Wallace, bari mu tattauna waɗannan tambayoyin misalai da tattaunawarsu:
Tambaya ta 1:
Bayyana yadda Layin Wallace ke shafar rarrabawar tsirrai da fauna a Indonesia!
Tattaunawa:
Layin Wallace wani yanki ne na halittu wanda ya raba nau'ikan Asiya da Ostiraliya. A Indonesia, wannan layi yana gudana tsakanin tsibiran Bali da Lombok da kuma tsakanin Kalimantan da Sulawesi. Kasancewar wannan layi yana nufin cewa flora da fauna na Bali sun fi kama da waɗanda ake samu a Asiya, yayin da Lombok ke da tasirin Ostiraliya. Canje-canje a yanayin ƙasa da iyakokin teku a cikin miliyoyin shekaru sun shafi hanyoyin ƙaura na nau'ikan halittu, wanda ya haifar da bambance-bambance masu ban mamaki duk da kusancin tsibiran.
Tambaya ta 2:
Tattauna dalilin da yasa Wallace ya zaɓi yankin da ke kewaye da Indonesia a matsayin wurin da bincikensa a fannin ilimin halittu ya mayar da hankali a kai!
Tattaunawa:
Indonesia tana kan wurin haɗuwa da nahiyoyi biyu, Asiya da Australasia. Wannan ya sanya Indonesia ta zama wurin bincike mai kyau ga Wallace don nazarin rarrabawa da juyin halittar nau'ikan halittu. Bambancin da take da shi da yanayin ƙasa na musamman ya ba Wallace damar ganin iyakokin rarraba nau'ikan halittu a sarari. Bugu da ƙari, bambancin halittu na musamman na Indonesia ya sanya ta zama muhimmin dakin gwaje-gwaje na halitta don nazarin ilimin halittu na juyin halitta da kuma nazarin yanayin halittu.
Tambaya ta 3:
Ka ba da misalai na nau'ikan halittu da aka samu a ɓangarorin biyu na layin Wallace kuma menene tasirinsu ga ka'idar juyin halitta?
Tattaunawa:
Misali ɗaya na nau'ikan halittu da ake samu a ɓangarorin biyu na Layin Wallace shine nau'ikan tsuntsaye da na birai daban-daban. Misali, ana samun tarsier a Sulawesi (gabashin Layin Wallace) amma ba a Borneo ba. Wani misali kuma shine dodon Komodo, wanda za'a iya samu a Gabashin Nusa Tenggara (gabashin Layin Wallace) amma ba a tsibiran da ke yammacin sa ba. Kasancewar waɗannan nau'ikan halittu daban-daban yana goyon bayan ka'idar juyin halitta, wanda ke bayyana yadda nau'ikan halittu ke haɓaka ta hanyoyi daban-daban bisa ga keɓewar yanayi da daidaitawar muhalli. Waɗannan nazarin suna taimaka wa masana kimiyya fahimtar hanyoyin juyin halitta da kuma yadda yanayin ƙasa daban-daban ke shafar nau'ikan halittu.
Kammalawa
Alfred Russel Wallace ya bayar da gudummawa mai yawa ga fannin nazarin halittu ta hanyar gano Wallace Line da kuma ra'ayinsa na rarraba flora da fauna a duk duniya. Fahimtar yanayin halittunsa ba wai kawai yana taimaka mana mu fahimci yadda ake rarraba nau'ikan halittu ba, har ma yana ba da zurfin fahimta game da hanyoyin juyin halitta da daidaitawar yanayi waɗanda ke sa bambancin rayuwa a Duniya ya zama mai ƙarfi da ban mamaki.
Fahimtar yadda ake rarraba shuke-shuke da fauna yana da matuƙar muhimmanci ga ƙoƙarin kiyaye nau'ikan halittu da kiyaye su. Ta hanyar fahimtar yadda nau'ikan halittu ke yaɗuwa da kuma daidaitawa, mutane za su iya ɗaukar matakan da suka dace don kare muhallin halittu da kuma kiyaye daidaiton yanayin halittu na duniya.
Wannan labarin yana ƙoƙarin bayar da cikakken bayani da kuma fahimtar farko game da rarrabawar flora da fauna bisa ga Wallace wanda za a iya amfani da shi a cikin yanayi daban-daban, duka a cikin binciken halittu, kiyayewa, da kuma ilimin muhalli.
