Holocene fauna

Holocene fauna

Lokacin da muke a yau an san shi da Holocene. Wannan shine lokacin karshe wanda ya sanya Zamanin Cenozoic kuma hakan ya fara ne kusan shekaru 12.000 da suka gabata. A wannan lokacin shine mafi yawan ci gaban ɗan adam tun daga al'adun makiyaya har zuwa yau. A duk tsawon wannan lokacin fauna ta sami babban canje-canje a matakin duniya. Saboda haka, zamuyi nazarin dabbobin Holocene.

A cikin wannan labarin za mu gaya muku duk halayen, juyin halitta na Holocene fauna.

Janar mahallin

Santa

Don bayyana fauna Holocene dole ne mu gabatar da mahallin da muka sami kanmu a yau. A duk tsawon wannan lokacin mun sami damar lura da ci gaban ɗan adam wanda ya haɗa da duk abubuwan ci gaban ɗan adam tun bayan kafa ƙungiyoyin zamantakewar farko da wayewa, ci gaban rubuce-rubuce, tafiye-tafiyen bincike da ci gaban al'adu da yawa. da kuma masu hankali.

Tunda dan adam makiyayi ne har zuwa yau akwai samuwar sauyi da yawa. Kamar yadda ake tsammani mutum shine maɓalli a cikin tasirin da yake kan fauna na Holocene. Abubuwan fauna sun sami canje-canje iri-iri waɗanda mutane suka rinjayi su da kuma abubuwan da suka dace da su. Kuma wannan yanayin ne kamar yadda muka sani an canza shi sau da yawa ta hanyar haɓaka fasaha da yawan mutane.

Yankunan sararin samaniya suna ta zama ƙasa da ƙasa kuma gurɓataccen bangare ne na wannan yanayin. Dabbobi da tsirrai dole ne su daidaita da yanayi daban-daban a cikin gajeren lokaci kaɗan da na al'ada. Kafin wanzuwar ɗan adam, akwai canje-canje a cikin fure da fauna a matakin duniya amma suna da lokaci mai tsawo sosai. Wanne nau'in jinsin ya samo asali kuma zai dace da sababbin mahalli miliyoyin shekaru na iya wucewa. Koyaya, kamar yadda zamu iya gani a yau, ɗan adam ya canza wannan yanayin duka. Dole ne jinsi su daidaita a cikin ƙarni kaɗan da ƙasa da ƙasa.

Dabbobin Holocene sun sami rashi mai yawa inda za'a iya ci gaba da aiwatarwa. Ba wai kawai fauna ba amma har ila yau flora tana fuskantar ƙarewar duniya sakamakon ayyukan mutane. Masana da yawa sun lasafta wannan ɓarnar a matsayin mafi tsawo a tarihin duniya don abin da aka ambata a sama. Kuma dalilan wannan ƙarancin ba canje-canje bane a cikin abubuwan da suka shafi muhalli amma ta hanyar aikin ɗan adam.

Yanayin da muka sami kanmu a cikin Holocene shine zamanin rikice-rikice. Wannan zamanin ya fara ne a ƙarshen wani lokaci na farko mai tsananin gaske kuma ana tsammanin nan da wani lokaci mai zuwa wani zamanin kankara zai sake faruwa.

Holocene fauna

Holocene ɗan adam da fauna

Kamar yadda muka ambata a baya, dabbobi basu da yawa a wannan lokacin amma dole ne su saba da canje-canje da yawa. Dukkanin jinsunan da suka sami nasarar kula da kansu tsawon lokaci basu sami wani sanannen canji ko juyin halitta ba. Wadancan jinsin wadanda aka kara musu karfi kuma suka tsawaita a cikin lokaci sune wadanda suka sami nasarar tsira daga wannan nau'ikan halittu na doron kasa da na teku. Ayyukan mutane da sha'awar su don mamaye duniyar shine abin da ke cikin haɗari ga dabbobi da tsire-tsire.

Zamu lissafa dabbobin da suka wanzu a farkon Holocene kuma tuni sun riga sun bace:

  • Santa: su jinsuna ne masu kamanceceniya da giwayen da muke dasu yau kuma yan gida daya ne. Babban halayyar ta shine a sami akwati wanda bangarorin sa ke fitar da manyan hakora. An rufe jikin da gashi tunda ya kasance karbuwa don iya rayuwa cikin ƙarancin yanayin zafi. Girman mammoth ya kasance mai canzawa kuma an tattara burbushin wasu samfuran da suka fi giwayen yanzu. Akwai wasu nau'ikan da basu da girma kuma ana kiransu dwarf mammoth.
  • Dodos: jinsin tsuntsaye ne da ke da matukar damuwa a kasar Mauritius. Sun kasance ƙanana cikin girma kuma sun auna kusan kilo 12. Zai iya kaiwa mita a tsayi duk da cewa bashi da ikon tashi. Kallon jikinshi yayi da kyau. Wasu kwararru na wannan tsuntsayen sun sanya shi a matsayin wani misali na gushewar jinsin ta hanyar aikin mutum. Kuma shine cewa wannan jinsin ya iya rayuwa a mazaunin sa kuma ya bunkasa sosai har sai mutum ya iso wannan tsibiri a farkon karni na XNUMX. Bayan isowar mutane zuwa mazauninsu, yawan mutanensu ya ragu sosai har zuwa halakarsu.
  • Mowa: wani nau'in tsuntsaye ne wanda yake al'ada ko a cikin New Zealand har zuwa karni na goma sha biyar. Anan ne inda ya bace saboda mutum. A bayyanar yayi kamanceceniya da jimina. Yana iya auna zuwa mita 3 da rabi kuma ya auna kimanin kilo 275. Kamar yadda ake tsammani, ɗan adam ya fara farautar wannan nau'in don ci. Mamayewar mafarautan Maori a mazauninsu shine babban dalilin bacewar wannan nau'in.

Holocene fauna cikin haɗarin halaka

A yanzu haka akwai wata kungiyar kasa da kasa wacce ke kula da kimanta nau'ikan halittu gwargwadon matsayinsu na barazanar da kuma yiwuwar bacewarsu. An san wannan kwayar halitta da internationalungiyar ƙasa da ƙasa don kiyaye yanayin (IUCN). Wannan kwayar halitta ta kafa nau'uka daban-daban dangane da ragin yawan jama'a da kuma tasirin halittun ta. Zamu iya samun rukunoni daga masu rauni, hatsarin bacewa, mummunar hatsarin bacewa, bacewa a cikin daji, bace, ba barazana, na karamar damuwa kuma ba tare da isassun bayanai ba.

A yanzu zamu jero wasu daga cikin jinsunan da suke cikin hadari na kusan halaka kuma wadanda sune sanannu:

  • Layin Iberiya
  • Rakumi daji
  • Orangutan
  • Bishiyar Asiya
  • Ungulu da aka ba da umurni
  • Bakin brow albatross
  • Alkawari ko shuɗi
  • Tsuntsun damisa-Tiger

Duk waɗannan nau'ikan suna na dabbobi ne na Holocene kuma suna cikin haɗarin halaka. Wannan shi ne tsarin ɓarnatar da su a hankali wanda ake bayyana babbar halaka ta shida. Babban abin firgici shi ne cewa wannan lokacin yana da gajarta sosai saboda yawancin jinsunan da zasu gushe.

Ina fatan cewa tare da wannan bayanin zaku iya koyo game da fauna na Holocene.


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