Iyantlukwano ekhoyo ngoku Imveliso ye-3500 yezigidigidi zeminyaka yolingo kunye neempazamo kwindaleko, yeyona inkulu kwimbali yobomi. Kodwa siza kuba ngaphambi kokufika kwesona siphezulu. Kuphononongo olutsha olukhutshwe kulindixesha iSayensi, iqela lesizwe lezenzululwazi lilumkisa malunga nelahleko kunye nokwehla kwezilwanyana, oko kube negalelo kwinto ebonakala ngathi ingumqondiso wokuqala wesiganeko sesithandathu sokuphela kwezinto eziphilayo.
Ukususela kunyaka 1500, zingaphezulu kwama-320 iintlobo zezidalwa ezinomqolo zomhlaba ezisemhlabeni. Ubuninzi beentlobo ezikhoyo bubonisa ukuba iipesenti ezingama-25 ziyancitshiswa. Le meko iyafana nobomi bezilwanyana ezingenamqolo. Kwaye, ngelixa ukuphela kwezinto zangaphambili kubangelwe ziintlekele kwindalo esingqongileyo okanye ifuthe leeasteroids ezinkulu emhlabeni, ngeli xesha zinokunxulunyaniswa nemisebenzi yabantu, imeko athe uRodolf Dirzo, unjingalwazi webhayoloji eStanford, wayichaza njengexeshaUkungaphumeleli kwi-Anthropocene«.
Kwizilwanyana ezinomqolo, Iipesenti ezili-16 ukuya kwezingama-33 zazo zonke iintlobo zezinto ezisengozini ngoku. Izilwanyana ezinkulu, ezichazwe njenge-megafauna kwaye zibandakanya iindlovu, imikhombe, iibhere ezimhlophe kunye nezinye iintlobo zeplanethi, zijamelene nelona zinga liphezulu lokwehla ngokuhamba kwexesha, imeko efana ncam neziganeko zangaphambili zokuphela.
Izilwanyana ezinkulu zihlala zinezinga lokukhula kwenani labemi, ngaphandle kwe Ukuba bafuna iindawo ezinkulu ukugcina abemi behlala. Ubungakanani bazo obukhulu babenza ukuba babe yeyona nto bayithandayo yokuzingela abantu.
Nangona ezi ntlobo zimele ipesenti esezantsi yezilwanyana ezisengozini, ukulahleka kwayo kuya kuba nemiphumo emibi Oko kungazinzisa ezinye iintlobo, kwaye kwezinye iimeko, impilo yabantu uqobo.
UDirzo ugcina ukuba: «apho kukho uxinano oluphezulu lwabantu, kukho izinga eliphezulu leempuku kunye namanqanaba aphezulu ee-pathogen, eyonyusa umngcipheko wosulelo lwezifo Ngubani onokucinga ukuba kukusilela kuphela okuya kuba nazo zonke ezi ziphumo zimangalisayo? Oku kunokuba ngumjikelo okhohlakeleyo«.
Izazinzulu zaye zacacisa ukuba kwenzeka njani oku ekuswelekeni kwezilwanyana ezingenamqolo. Inani labantu liphindaphindwe kabini kule minyaka ingama-35 idlulileyo. Kwangelo xesha linye, inani lezilwanyana ezingenamqolo, ezinjengeebhabhathane, izigcawu kunye neentshulube, lehle nge-45%.
Kufuneka kuthathelwe ingqalelo oko izinambuzane zisasaza umungu kwiipesenti ezingama-75 zezityalo ehlabathini lonke, eyi-10 yepesenti yexabiso lezoqoqosho lokubonelela ngokutya. Izinambuzane zidlala indima ebalulekileyo kubhayisekile wezakhamzimba kunye nokonakala kwezinto eziphilayo, ezinceda ekuqinisekiseni imveliso yendalo. E-United States uqobo, ixabiso lolawulo lwezitshabalalisi lwasekhaya liqikelelwa kwi- $ 4500 yezigidigidi ngonyaka.
Xa kuziwa kwizisombululo, iDirzo igcina ukuba ziyinkimbinkimbi. Ngokukhawuleza ukunciphisa amazinga otshintsho lwendawo yokuhlala Ukuxhaphaza ngokugqithileyo kuya kunceda, kodwa ezo nzame ziya kufuna ukuziswa kwiimeko kunye nakwimimandla nganye. UDirzo uthi: «Sithanda ukucinga ngokutshabalala njengokulahleka kweentlobo ebusweni bomhlaba, kwaye kubaluleke kakhulu ukuba zikuthathele ingqalelo, kodwa kukho ilahleko enkulu ekusebenzeni kwendalo ezithile apho izilwanyana zidlala indima ephambili edinga ukuba ithathelwe ingqalelo kakhulu«.