Yog vim li cas txo tus naj npawb ntawm cov ncov qaumteb qabteb bears nyob rau hauv lub Arctic?

Dawb, los yog ib tug dais - ib tug haib thiab zoo nkauj tsiaj, ib tug yeej muaj tseeb cim ntawm lub Arctic. Txawm li cas los, lub hauv paus txawm inhabitants ntawm lub North yog nyob rau hauv kev hem thawj. Cov nab npawb ntawm cov ncov qaumteb qabteb bears nyob rau hauv lub Arctic tau poob zoo heev nyob rau hauv xyoo tsis ntev los. Zaum hais tias ib nrab xyoo tom qab lawv tej zaum yuav tsis nyob twj ywm nyob rau hauv lub ntiaj chaw. Nyob rau hauv 2008, lub ncov qaumteb qabteb Xyooj tau raug tshaj tawm hais tias ib tug cov hom endangered, thiab coj tau cov nyob rau hauv lub Red Phau Ntawv.

Yog vim li cas txo tus naj npawb ntawm cov ncov qaumteb qabteb bears?

Zaum, zoologists muab ob peb yog vim li cas rau kom txhob muaj cov dais pejxeem. ntuj thiab anthropogenic yam peev xwm yuav txawv ntawm lawv.

Ib tug ntawm lub ntsiab yog vim li cas thiaj li muaj cov xov tooj ntawm cov ncov qaumteb qabteb bears, yuav pom tau tias raws li lub ntiaj teb no ua kom sov thiab cov kab yuav txo tau nyob rau hauv lub cheeb tsam ntawm ncov qaumteb qabteb dej khov. Qhov no ntseeg tau muaj feem xyuam rau lub neej ntawm lub ncov qaumteb qabteb Xyooj, raws li qhov no tsiaj lub neej yos hav zoov rau cov ntsaws ruaj ruaj. Tshaj yav dhau los 30 xyoo, lub cheeb tsam ntawm cov dej khov nyob rau hauv lub Arctic hiav txwv shrank rau 5,02 lab square meters. km vs. nruab nrab muaj nqis tshaj li 7 lab sq. km.

kev nyab xeeb sov

Kev nyab xeeb kev hloov tau coj mus rau ib tug sov ntawm cov dej nyob rau hauv lub yav qab teb ib feem ntawm lub Arctic hiav txwv. Ib txhia coldwater ntses (eg, Arctic Blue) tau ploj mus rau hauv ntau sab qaum teb thaj tsam. Thiab tom qab lawv thiab tsiv cov pej xeem ntawm ringed cov ntsaws ruaj ruaj, uas tau hunted dais. Ib feem ntawm cov bears mus rau lub ntsaws ruaj ruaj rau sab qaum teb, thiab tus so yog muaj zoo teeb meem nrog cov zaub mov. Raws li ib tug tshwm sim, bears pib pub tsis tau lawv li ib txwm cov khoom noj - noog qe, lemmings, berries.

Starving tsiaj nce tuaj mus rau tib neeg habitation. Nyob rau hauv kev tshawb fawb ntawm cov zaub mov, lawv tshawb nrhiav cov khib nyiab thiab landfills, yog txaus ntshai rau tib neeg. Tej tsiaj tua, uas tseem piav yog vim li cas lub txo tus naj npawb ntawm cov ncov qaumteb qabteb bears.

Tsis tas li ntawd, noj cov zaub mov pov tseg, lawv feem ntau nqos thiab xws li txaus ntshai tej yam uas, xws li yas zaj duab xis, nylon mesh rau cov khoom uas, pieces ntawm cov iav, nyom remnants ntawm tsev neeg tshuaj.

txoj kev ntawm lub neej

Qhov no haib thiab agile tsiaj yog ib tug vagrant. Nyob rau hauv lub caij nplooj ntoos hlav, thaum cov dej khov pib melting, polar bears mus rau sab qaum teb. Roaming los ntawm cov dej khov floe rau dej khov floe, lawv ua ntev jumps. Cov dej khov dej uas lawv ntsaub thaum lub sij hawm ib tug mus yos hav zoov los yog rau koj tsiv mus rau lwm lub ice floe.

Kev nyab xeeb sov tau coj mus rau lub fact tias lub resulting ice yuav thinner thiab tsawg check. Nws yooj yim lov thiab crumbles raws li qhov feem. Yog li ntawd, polar bears muaj ua luam dej lawm mus tshaj ua ntej. Qhov no yog vim muaj ib tug loj loj pov tseg ntawm lub zog, txhais tau tias, thiab zaub mov rau cov rov qab yuav siv sij hawm ntev. Hluas kuj tsuas tsis muaj hwj chim dhau xws li ib tug taug kev mus thiab poob dej tuag.

Vim hais tias ntawm cov kev hloov cov dej khov tej yam kev mob ntau bears tsis tswj kom rov qab mus rau lub teb chaws mus txuas ntxiv rau cov haiv neeg. Qhia, lawv yuav tau khawb maternity dens ncaj qha rau ntawm cov dej khov, uas tsub kom kev pheej hmoo ntawm kev tuag thiab cov me nyuam, thiab feem ntau dais. Tom qab lub tsos ntawm Cubs, thiab noj lawv yuav siv sij hawm nws ib tug ntau ntawm lub zog, thiab tuaj tawm ntawm lawv dens mus plob hav zoov nws tsis tau raws li ntev raws li cov me nyuam yuav tsis tau mus ua raws li nws.

kev yos hav zoov

Lwm yog vim li cas vim li cas lub txo tus naj npawb ntawm cov ncov qaumteb qabteb bears yog poaching. Thaum lawv tua cia li rau ob peb hauv paus txawm cov neeg ntawm lub sab qaum teb, nws tsis yog hnov li cas. Tab sis thaum lub bears pib mus plob hav zoov uas niaj hnub riam phom, siv helicopters, tus xov tooj ntawm txhaj cov tsiaj muaj ntau zog dramatically. Ncaav tours rau tag nrho lub mus yos hav zoov ntawm polar bears. Thiab daim tawv nqaij ntawm lub tua pov tseg Arctic predator ces tau hais khov kho tsom qhua.

Tam sim no lub ncov qaumteb qabteb dais yog kev tiv thaiv, tab sis poachers nws tsis yog ib qho chaw khuam siab.

kab mob

Zaum no ua rau ntau raug txiav txim yog vim li cas txo cov ncov qaumteb qabteb bears. Cov lus teb yog cov sib txawv. Ntawm cov yog vim li cas nws yog hu ua kuj kab mob xws li trichinosis. Nws yog tshwm sim los ntawm parasites, hauv nyob hauv cov nqaij ntawm cov tsiaj. Nyob rau hauv tas li ntawd mus polar bears, lawv tseem mob hma, laub dev, cov ntsaws ruaj ruaj. Ib txhia ntseeg tias tus kab mob no tau coj cov neeg mus rau North.

Muaj tsis muaj tsis ntseeg hais tias polar bears xav tau kev tiv thaiv. Txwv tsis pub, peb cov xeeb ntxwv yuav tsis paub txog lub zog thiab kuj ceeb tias zoo nkauj tsiaj nyaum Arctic nomads uas nyob rau hauv lub hnyav North.