Tojsiab
Monarch npauj npaim cov pejxeem tau nyob ruaj khov txij li xyoo 1993, kev tshawb fawb luam tawm hauv Thoob Ntiaj Teb Hloov Biology Hnub Friday pom, sib cav txog cov kev txhawj xeeb yav dhau los uas tau tsa los ntawm cov kws tshawb fawb tias hom npauj npaim tuaj yeem ntsib kev ploj mus vim tias lub caij ntuj no poob qis los ntawm kev hloov pauv huab cua.
Ib tug huab tais npauj npaim yog qhia.
Yav tom ntej ntawm Getty Dluab
Cov Lus Tseem Ceeb
Cov kws tshawb fawb ntawm University of Georgia - uas tau tshuaj xyuas cov ntaub ntawv ntawm 135,000 huab tais los ntawm North American Butterfly Association ntawm 1993 thiab 2018 - pom npauj npaim cov pejxeem loj hlob thaum lub caij ntuj sov tau them rau kev poob qis hauv lub caij ntuj no.
Monarch npauj npaim txheeb ze - ib qho kev ntsuas ntawm ntau npaum li cas los yog tsawg hom yog txheeb ze rau lwm tus - loj hlob ntau dua 1% txhua xyoo txij li xyoo 1993, cov kws tshawb fawb pom.
Mexico tau pom cov neeg poob qis ntawm lub caij ntuj no npauj npaim nyob rau hauv xyoo tas los no tej zaum vim tias tsawg tus huab tais tau ua rau sab qab teb vim huab cua phem zuj zus, tab sis lub caij ntuj sov yug me nyuam hauv North America ua rau cov kev poob, cov kws tshawb fawb tau hais.
Cov kws tshawb fawb tau tshawb pom huab tais npauj npaim yog qhov tseeb "ib qho ntawm cov npauj npaim tshaj plaws nyob rau hauv North America," raws li Andy Davis, tus kws tshawb fawb thiab tus kws tshawb fawb pabcuam ntawm University of Georgia's Odum School of Ecology.
Cov kws tshawb fawb tau ceeb toom tias qhov kub thiab txias uas tshwm sim los ntawm kev hloov pauv huab cua tuaj yeem ua rau muaj kev hem thawj rau lwm hom kab npauj npaim nrog rau ntau hom kab.
Kev Nkag Siab Hais
"Muaj qhov kev nkag siab no tawm ntawm qhov ntawd tias huab tais cov pej xeem muaj teeb meem loj, tab sis peb pom tias tsis yog txhua yam. Nws tawm tsam txhua tus neeg xav, tab sis peb pom tias lawv ua tau zoo, "Davis hais.
Tus lej Loj
500. Qhov ntawd yog pes tsawg lub qe ib tus poj niam huab tais npauj npaim tuaj yeem nteg tau, ua rau cov tsiaj "muaj peev xwm rov ua tau zoo heev," Davis hais.
Tus Keeb Kwm Tseem Ceeb
Cov kab ntau hom kab no poob qis vim yog yam xws li chaw nyob poob, tshuaj tua kab thiab kev hloov pauv huab cua, ua rau tib neeg thiab cov kab ke dav dav muaj kev pheej hmoo vim yog lub luag haujlwm kab ua haujlwm hauv cov txheej txheem xws li cog pollination thiab rhuav tshem pov tseg. Txawm hais tias ntau hom kab npauj npaim muaj kev phom sij, huab tais npauj npaim tau dhau los ua "pej xeem lub ntsej muag" ntawm cov kab poob qis, raws li cov kws tshawb fawb. Cov ntawv ceeb toom thiab kev tshawb fawb nyob rau hauv xyoo tas los no tau qhia tias huab tais sab hnub poob nyob rau hauv ntug ntawm kev ploj tuag, feem ntau vim yog lub caij ntuj no poob qis hauv thaj chaw xws li Mexico thiab California. Tab sis kev tshawb fawb txog niaj hnub no seb puas yog huab tais yug me nyuam cov pej xeem nyob rau hauv ib qho kev poob qis nyob rau hauv txhua lub caij tsis muaj tseeb. Cov Thoob Ntiaj Teb Hloov Biology txoj kev tshawb no yog ib qho ntawm qhov loj tshaj plaws thiab kev ntsuam xyuas zoo tshaj plaws ntawm huab tais npauj npaim cov qauv kev yug me nyuam tsis tau, raws li cov kws tshawb fawb.
ntxiv nyeem ntawv
Poj huab tais npauj npaim tsis kam lees cov npe ntawm cov tsiaj txhu txawm tias poob qis (National Geographic)
Tau qhov twg los: https://www.forbes.com/sites/madelinehalpert/2022/06/10/monarch-butterfly-populations-remain-stable-despite-scientists-warnings-of-extinction-study-finds/