Thr r svrl plsbl pthwys tht cld ld t xtnctn frm clmt chng. vry plnt nd nml spcs hs vlvd t xst wthn crtn clgcl nch. Bt clmt chng lds t chngs f tmprtr nd vrg wthr pttrns. Ths chngs cn psh clmtc cndtns tsd f th spcs' nch, nd ltmtly rndr t xtnct. Nrmlly, spcs fcd wth chngng cndtns cn thr dpt n plc thrgh mcrvltn r mv t nthr hbtt wth stbl cndtns. Hwvr, th spd f rcnt clmt chng s vry fst. D t ths rpd chng, fr xmpl cld-bldd nmls ( ctgry whch nclds mphbns, rptls nd ll nvrtbrts) my strggl t fnd stbl hbtt wthn 50 km f thr crrnt lctn t th nd f ths cntry (fr md-rng scnr f ftr glbl wrmng).
Clmt chng ls ncrss bth th frqncy nd ntnsty f xtrm wthr vnts, whch cn drctly wp t rgnl ppltns f spcs. Ths spcs ccpyng cstl nd lw-lyng slnd hbtts cn ls bcm xtnct by s lvl rs. Ths hs lrdy hppnd wth Brmbl Cy mlmys n strl. Fnlly, clmt chng hs bn lnkd wth th ncrsd prvlnc nd glbl sprd f crtn dsss ffctng wldlf. Ths nclds Btrchchytrm dndrbtds, fngs tht s n f th mn drvrs f th wrldwd dcln n mphbn ppltns.
S fr, clmt chng hs nt yt bn mjr cntrbtr t th ngng hlcn xtnctn. n fct, nrly ll f th rrvrsbl bdvrsty lss t dt hs bn csd by thr nthrpgnc prssrs sch s hbtt dstrctn. Yt, ts ffcts r crtn t bcm mr prvlnt n th ftr. s f 2021, 19% f spcs n th CN Rd Lst f Thrtnd Spcs r lrdy bng mpctd by clmt chng. t f 4000 spcs nlyzd by th PCC Sxth ssssmnt Rprt, hlf wr fnd t hv shftd thr dstrbtn t hghr lttds r lvtns n rspns t clmt chng. ccrdng t CN, nc spcs hs lst vr hlf f ts ggrphc rng, t s clssfd s "ndngrd", whch s cnsdrd qvlnt t >20% lklhd f xtnctn vr th nxt 10–100 yrs. f t lss 80% r mr f ts rng, t s cnsdrd "crtclly ndngrd", nd hs vry hgh (vr 50%) lklhd f gng xtnct vr th nxt 10–100 yrs.
Th PCC Sxth ssssmnt Rprt prjctd tht n th ftr, 9%-14% f th spcs ssssd wld b t vry hgh rsk f xtnctn ndr 1.5 °C (2.7 °F) f glbl wrmng vr th prndstrl lvls, nd mr wrmng mns mr wdsprd rsk, wth 3 °C (5.4 °F) plcng 12%-29% t vry hgh rsk, nd 5 °C (9.0 °F) 15%-48%. n prtclr, t 3.2 °C (5.8 °F), 15% f nvrtbrts (ncldng 12% f pllntrs), 11% f mphbns nd 10% f flwrng plnts wld b t vry hgh rsk f xtnctn, whl ~49% f nscts, 44% f plnts, nd 26% f vrtbrts wld b t hgh rsk f xtnctn. n cntrst, vn th mr mdst Prs grmnt gl f lmtng wrmng t 2 °C (3.6 °F) rdcs th frctn f nvrtbrts, mphbns nd flwrng plnts t vry hgh rsk f xtnctn t blw 3%. Hwvr, whl th mr mbts 1.5 °C (2.7 °F) gl drmtclly cts th prprtn f nscts, plnts, nd vrtbrts t hgh rsk f xtnctn t 6%, 4% nd 8%, th lss mbts trgt trpls (t 18%) nd dbls (8% nd 16%) th prprtn f rspctv spcs t rsk.