Dumamar yanayi na iya rage dabbobi masu shayarwa

Temperaturesarin yanayin zafi saboda canjin yanayi

Babu wanda yayi tsammanin hakan, amma wannan shine daidai sakamakon binciken da aka buga a mujallar cigaban kimiyya: dumamar yanayi na iya rage girman dabbobi masu shayarwa, kamar yadda ya riga ya faru kimanin shekaru miliyan 56 da suka gabata, kimanin shekaru miliyan 10 bayan dinosaur ɗin suka gushe.

A wancan lokacin, Zafin duniya ya karu tsakanin 5 zuwa 8 a ma'aunin Celsius a cikin shekaru 10.000, kuma ya kasance an ɗaukaka tsawon shekaru 170.000 kafin ya dawo yadda yake.

Misali na "dwarfing" an samo shi a Sifrhippus, wanda shine farkon daidaita. Wannan dabba ya ragu da akalla 30% a lokacin shekaru 130.000 na farko na dumamar yanayi. Yayinda yawan zafin duniya ya dawo daidai, girman jikinsa ya karu da kashi 76%. Amma ba shi kaɗai bane.

Masu bincike sun nuna haka wannan tsarin ana kiyaye shi koda a cikin al'amuran da dumamar yanayi bata da girma sosai, kamar wanda duniyar take fuskanta a yau. Abin da ya sa mai binciken Abigail D'Ambrosia na Jami'ar New Hampshire ta ce "abin takaici, yau babban gwaji ne." Tambayar ita ce, me ya sa?

Sifhrippus, na farko daidai

Hoton - Danielle Byerley

A yankunan da yanayi ya fi dumi, dabbobi masu shayarwa ba su da yawa fiye da na masu sanyaya. D'Ambrosia ta bayyana hakan lokacin da yanayin zafi yayi yawa, ƙaramin girma ya fi dacewa ga jiki, saboda zai iya sanyaya kanta da kyau.

Kodayake akwai wasu dalilan da yasa dabbobi zasu iya zama kanana, kamar rashin abinci ko ruwa, zafin jiki dalili ne da yake shafar dukkan halittu. Don haka, bisa ga binciken, a gaba yana iya zama da yawa daga cikin nau'ikan da muka sani a yau za su kasance ƙasa da yadda suke a yau.

Kuna iya karanta cikakken nazarin a nan (Turanci ne).


Kasance na farko don yin sharhi

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