Rashin Holocene

Rushewar Holocene, wanda kuma ake kira Anthropocene  ko rushewar taro ta shida,  wani lamari ne na ci gaba da lalacewa wanda ayyukan ɗan adam suka haifar kawai a lokacin zamanin Holocene. Wannan taron halaka ya kunshi iyalai da yawa na shuke-shuke   da dabbobi, gami da dabbobi masu shayarwa, tsuntsaye, dabbobi masu rarrafe, kifi, da dabbobi marasa rai, suna tasiri ga nau'ikan ƙasa da na Ruwa. Yaduwar lalacewar wurare masu yawa na halittu kamar su coral reefs da gandun daji sun kara rikicin. Yawancin waɗannan halaka ba su da takardun shaida, saboda sau da yawa ba a gano nau'in ba kafin halaka su.

Ana kimanta yawan lalacewa na yanzu a sau 100 zuwa 1,000 sama da yawan lalacewa ta asali kuma suna hanzarta. A cikin shekaru 100-200 da suka gabata, asarar halittu iri-iri ya kai irin wannan matakan tsoro  cewa wasu masana kimiyyar kiyayewa yanzu sun yi imanin cewa ayyukan ɗan adam sun haifar da halaka mai yawa,   ko kuma suna gab da yin hakan.   Saboda haka, bayan "Big Five" mass extinctions, an kira taron Holocene na shida mass extinction. Koyaya, saboda amincewar kwanan nan game da halakawar jama'a ta Capitanian, an kuma ba da shawarar halakawar taro ta bakwai.

Halakar Holocene ta riga ta wuce ta Late Pleistocene megafauna extinctions (wanda ya kasance daga shekaru 50,000 zuwa 10,000 da suka gabata), inda manyan dabbobi masu shayarwa da yawa - gami da 81% na Megaherbivores - suka ƙare, raguwar da aka danganta aƙalla a wani ɓangare ga ayyukan ɗan adam (anthropogenic).  Ana ci gaba da muhawara mai ƙarfi game da muhimmancin dangi na abubuwan da suka haifar da mutum da canjin yanayi, amma wani bita na baya-bayan nan ya kammala cewa akwai ƙananan shaidu game da babban rawar da canjin sauyin yanayi ke takawa da shaidar "ƙarfi" ga ayyukan ɗan adam a matsayin babban direba. Misalan daga yankuna kamar New Zealand, Madagascar, da Hawaii sun nuna yadda mulkin mallaka na ɗan adam da lalacewar mazaunin ya haifar da asarar halittu masu yawa. 

## Tarihi
Ana nuna lalacewar taro ta hanyar asarar akalla kashi 75% na jinsuna a cikin ɗan gajeren Lokacin (watau, ƙasa da shekaru miliyan 2).  Har ila yau, an san halakawar Holocene a matsayin "halaka ta shida", saboda mai yiwuwa ne karo na shida na halakawar jama'a, bayan abubuwan halaka na Ordovician-Silurian, halakawar Late Devonian, halaka ta Permian-Triassic, halakawa ta Triassic-Jurassic, da kuma halakawar Cretaceous-Paleogene. Idan an haɗa taron halaka na Capitanian a cikin halakawar jama'a na farko, halakawar Holocene za a san ta da "halaka ta bakwai". Holocene shine zamanin geological na yanzu.

## Bayani na gaba ɗaya

Takamaiman lokacin da Holocene ya faru ya kasance ana muhawara, ba tare da wata yarjejeniya ba game da lokacin da ya fara ko kuma ya kamata a dauke shi daban daga Quaternary. Koyaya, yawancin masana kimiyya sun yarda cewa ayyukan ɗan adam sune babban abin da ke haifar da halakawar Holocene. Wani binciken da aka gudanar a shekarar 1998 ta Gidan Tarihi na Tarihi na Amirka ya gano cewa kashi 70% na masana kimiyyar halittu sun amince da wani lamari na lalacewar ɗan adam. Wasu masu bincike sun ba da shawarar cewa ayyukan Mutanen da suka gabata na iya ba da gudummawa ga lalacewar da ta gabata, musamman a Australia, New Zealand, da Madagascar. Ko da matsin farauta mai sauƙi, haɗe da rauni na manyan dabbobi a tsibirai masu nisa, ana zaton sun isa su shafe dukkan jinsuna. Sai kawai a cikin matakan kwanan nan na Holocene ne tsire-tsire suka sha wahala sosai, wanda kuma yana da alaƙa da ayyukan ɗan adam kamar sare daji da juyin ƙasa.

## Manazarta