Isilwanyana esingumfuziselo weeholide zeKrisimesi, iinyamakazi, sinobunzima ngenxa yokufudumala komhlaba ngokwesifundo esenziwe kwintlanganiso yeBritish Ecological Society (BES) yonyaka eLiverpool yapapashwa kwiphephancwadi iGlobal Change Biology. Inani labemi liyancipha, kwaye abo bazalwayo bahlala bancinci kwaye bencinci.
Ngaba kunokuba sengozini yokuphela? Ingayiyo. Makhe sibone ukuba kutheni.
I-reindeer eyazalwa kwi-Arctic yaseNorway ngo-1994 yayinobunzima obuyi-55kg, kodwa eyenze ngo-2010 inobunzima obungaphantsi kwepesenti elishumi elinambini, oko kukuthi, i-48kg. I-12% inokubonakala incinci, kodwa kufuneka ithathelwe ingqalelo ukuba kwesi silwanyana Ubunzima bubaluleke kakhulu ekuveliseni nasekusindeni kohloboNjengoko kuchaziwe nguSteve Albon, inkokeli yophando, eyongeze yathi: "Iingxelo zibonise ukuba xa umndilili wobunzima babantu abadala ungaphantsi kwe-50kg, abantu bafumana ukwehla okunzima."
Amaqondo obushushu aphezulu e-Arctic, ngokweenzululwazi, yi-2,8 degrees Celsius ephezulu kune-2015, ke I-reindeer ineengxaki ezingakumbi zokutya I-lichens kunye ne-mosses kuba ezi azinakufikelela kuzo kuba zifakwe phantsi komkhenkce ngexesha lasebusika. Umkhenkce owela kumhlaba wekhephu othintela ezi zilwanyana ukuba zingondli.
Indlala inokubangela ukuqhomfa, okanye ibangele ukuba umntwana azalwe enesisindo esisezantsi kakhulu kunesiqhelo, kangangokuba Ama-reindeer angama-61.000 abulawa yindlala kwi-Yamal Peninsula kuphela, eSiberia, ngexesha lobusika ka-2013 ukuya ku-2014 ngenxa yemvula enkulu kwikhephu.
Iqela belilandelela i-Arctic reindeer ukusukela ngo-1994, bayithatha bayilinganisa ukusuka kwiinyanga ezili-10 ubudala, indlela ebiyilandela ebusika nganye kunye naleyo beyisebenzisa ukubuyisa unyaka olandelayo kuthathelwa ingqalelo ubungakanani bayo kunye nobunzima.
Ungasifunda sonke isifundo apha (ngesiNgesi).