Impilo yezinhlelo zamanzi nomhlabathi weplanethi yethu ixhumene kakhulu nezinqubo zezolimo, futhi ukufuywa kwezilwane ezimbonini kunomthelela omubi kakhulu. Imfuyo emikhulu ikhiqiza imfucuza eningi, evame ukungena emifuleni, emachibini, namanzi angaphansi komhlaba, ingcolise imithombo yamanzi nge-nitrogen, i-phosphorus, imithi elwa namagciwane namagciwane. Lokhu kungcola kuphazamisa imvelo yasemanzini, kusongela impilo yabantu, futhi kunomthelela ekwandeni kwezindawo ezifile olwandle nasezindaweni ezihlala emanzini ahlanzekile.
Umhlabathi, isisekelo sokuvikeleka kokudla emhlabeni wonke, uhlupheka ngokulinganayo ngaphansi kokufuywa kwezilwane ngamandla. Ukudlisa ngokweqile, izitshalo zokuphakela i-monoculture, kanye nokuphathwa kabi komquba kuholela ekugugulekeni, ekuncipheni komsoco, nasekulahlekeni kokuvunda kwenhlabathi. Ukuwohloka kwenhlabathi engaphezulu akugcini nje ngokubukela phansi ukukhiqizwa kwezitshalo kodwa futhi kunciphisa amandla emvelo omhlaba okumunca ikhabhoni futhi alawule imijikelezo yamanzi, kuqinise kokubili isomiso nezikhukhula.
Lesi sigaba sigcizelela ukuthi ukuvikela amanzi nomhlabathi kubalulekile ekusimameni kwemvelo nempilo yabantu. Ngokugqamisa umthelela wokulima kwasefekthri kulezi zinsiza ezibalulekile, kukhuthaza ukushintshela ezindleleni zezolimo ezivuselelayo, ukuphathwa kwamanzi okunesibopho, kanye nokudla okunciphisa ubunzima kuzinhlelo zemvelo ezibalulekile zeplanethi yethu.
Izilwandle zethu, ezicebile empilweni nasezilwaneni eziphilayo, zibhekene nosongo okhulayo: ukwanda okusheshayo kwezindawo ezifile olwandle. Lezi zindawo, lapho amazinga we-oxygen plummet kanye nempilo yasolwandle engenakukhuleka khona, kuya ngokuya kuhambisana nomthelela wezemvelo wezolimo zezilwane. Kusuka kumanyolo runa kudala ama-algal blooms aqhakaza ukungcola kusuka ekungcoleni imfucumfucu kanye nokukhiqizwa okuphakelayo, izindlela zokulima izimboni zilimaza kakhulu i-Marine Ecosystems. Lo mbhalo uhlola ukuthi izindlela zezolimo ezingafinyeleleki zifaka kanjani izimo ezifile olwandle futhi ziveze izixazululo ezisebenzisekayo - njengokuthola ukudla okususelwa kwizitshalo futhi kukhuthaza ukulima okuzinzile - kungasiza ukuvikela izilwane zethu ezizukulwaneni ngezizukulwane ezizayo ezizayo