Tekun Fasifik shine mafi girman ruwa a Duniya. Yankin ta kusan kilomita murabba'in miliyan 180, wanda ya hada har da tekuna da yawa. Sakamakon tasirin tasirin anthropogenic, miliyoyin tan na ruwa suna gurɓacewa ta hanya mai ƙazanta tare da sharar gida da kuma sinadarai.
Gurɓatar datti
Duk da fadin yankin, Tekun Fasifik mutane suna amfani da shi sosai. Ana yin kamun kifi na masana'antu, jigilar kayayyaki, hakar ma'adinai, nishaɗi har ma da gwajin makaman nukiliya a nan. Duk wannan, kamar yadda aka saba, ana tare da sakin abubuwa da abubuwa masu ɗimbin yawa.
Da kanta, motsin jirgi a saman ruwa yana haifar da bayyanar shaye daga injunan dizal da ke sama da shi. Bugu da kari, hadaddun hanyoyin, kamar jiragen ruwa, ba safai suke kwararar ruwan aiki ba. Kuma idan mai yiwuwa injin mai ba zai iya zubowa daga jirgin ruwa ba, to daga dubun dubatan tsofaffin jiragen ruwan kamun kifi abu ne mai sauƙi.
A zamanin yau, mutum mai ƙarancin tunani yana tunanin matsalar zubar da shara ta taga. Bugu da ƙari, wannan na al'ada ne ba kawai ga Rasha ba, har ma ga mazaunan wasu ƙasashe. A sakamakon haka, ana zubar da datti daga kan jiragen ruwa na jirgi, masu amfani da jiragen ruwa, masu shiga teku da sauran jiragen ruwa. Kwalbobin filastik, jakunkuna, ragowar kayan kwalliya ba sa narkewa cikin ruwa, ba su narkewa ko nutsewa ba. Suna kawai iyo a saman kuma suna shawagi tare a ƙarƙashin tasirin ruwa.
Babban tarin tarkace a cikin tekun ana kiran shi Babban Pacifican shara na Pacific. Wannan babban "tsibiri" ne na kowane irin shara mai ƙazanta, wanda ke kewaye da kusan kilomita murabba'in miliyan. An kafa shi ne saboda guguwar ruwa da ke kawo shara daga sassa daban-daban na teku zuwa wuri guda. Yankin zubar shara a teku yana girma kowace shekara.
Haɗarin fasaha a matsayin tushen gurɓataccen yanayi
Rushewar tankar mai wata alama ce ta tushen gurbatar sinadarai a cikin Tekun Pacific. Wannan nau'in jirgi ne wanda aka tsara don ɗaukar mai mai yawa. A kowane yanayi na gaggawa da ke haɗuwa da ɓarkewar tankin jigilar kaya, kayayyakin mai suna shiga cikin ruwa.
Gurbatar mafi girma na Tekun Fasifik ta hanyar mai ya faru ne a cikin 2010. Wata fashewa da wuta a kan wani dandalin mai da ke aiki a Tekun Mexico sun lalata bututan karkashin ruwa. Gaba ɗaya, an jefa sama da tan biliyan bakwai na mai a cikin ruwa. Yankin da aka gurbata ya kasance murabba'in kilomita 75,000.
Mafarauta
Baya ga gurɓacewar yanayi iri daban-daban, kai tsaye ɗan adam yana canza ƙira da dabbobin Tekun Fasifik kai tsaye. Sakamakon farauta mara tunani, wasu nau'ikan dabbobi da tsirrai an hallaka su kwata-kwata. Misali, can baya a karni na 18, an kashe "saniyar teku" ta karshe - dabba mai kama da hatimi kuma tana zaune a ruwan ruwan Bering, an kashe ta. Kaddara iri ɗaya ce kusan ta faɗo wa wasu nau'ikan kifayen kifayen kifi da hatimai na fur. A yanzu akwai tsayayyen tsari game da hakar wadannan dabbobin.
Haka kuma kamun kifi ba bisa doka ba yana haifar da babbar illa ga Tekun Pacific. Adadin rayuwar halittar ruwa anan yana da girma, amma fasahohin zamani sun bada damar daukar manyan kundin a wani yanki cikin kankanin lokaci. Lokacin da aka kamun kifi a lokacin bazara, dawo da kan jama'a na iya zama matsala.
Gabaɗaya, Tekun Pacific yana ƙarƙashin matsi na tasirin ɗan adam tare da tasirin mummunan tasirin yau da kullun. Anan, kamar a doron ƙasa, akwai gurɓata da shara da magunguna, da kuma lalata dabbobin da yawa.
