Tare da mutane kaɗan, mutum zai yi tunanin Arctic zai zama yankin da ba shi da filastik, amma wani sabon bincike ya nuna hakan bai yi nisa da gaskiya ba.Masu binciken da ke nazarin Tekun Arctic suna gano tarkacen filastik a ko'ina.A cewar Tatiana Schlossberg na jaridar The New York Times, ruwan Arctic ya zama tamkar wurin zubar da robobi da ke shawagi da igiyar ruwa.
Wata tawagar masu bincike ta kasa da kasa ce ta gano robobi a shekarar 2013 yayin wata tafiya ta wata biyar a duniya a cikin jirgin ruwa mai suna Tara.A kan hanyar sun dauki samfurin ruwan teku don lura da gurbatar filastik.Kodayake yawancin robobi ba su da yawa, suna cikin wani yanki na musamman a Greenland da kuma a arewacin Tekun Barents inda yawan yawa ke da yawa.Sun buga sakamakon bincikensu a cikin mujallar Science Advances.
Fil ɗin yana da alama yana motsawa tare da igiya na thermohaline, bel ɗin "conveyor" na teku wanda ke ɗaukar ruwa daga ƙananan Tekun Atlantika zuwa sanduna."Greenland da Tekun Barents sun mutu a cikin wannan bututun polar," in ji marubucin binciken Andrés Cozar Cabañas, wani mai bincike a Jami'ar Cadiz a Spain a cikin wata sanarwa da aka fitar.
Masu binciken sun yi kiyasin cewa adadin robobin da ke yankin ya kai ton dari, wanda ya kunshi dubban daruruwan kananan gutsuttsura a kowace murabba'in kilomita.Ma'aunin zai iya zama ma fi girma, in ji masu binciken, saboda mai yiwuwa filastik ya taru a kan tekun da ke yankin.
Eric van Sebille, marubucin binciken, ya gaya wa Rachel van Sebille a cikin The Verge: "Yayin da yawancin Arctic suna da kyau, akwai Bullseye, akwai wannan wuri mai zafi da ruwa mai gurbataccen ruwa."
Ko da yake da wuya a jefar da robobin kai tsaye a cikin Tekun Barents (wani ruwa mai sanyin ƙanƙara tsakanin Scandinavia da Rasha), yanayin robobin da aka gano ya nuna cewa ya daɗe a cikin tekun.
“Gutsuwar robobi da farko da girmansu ya kai inci ko ƙafafu suna yin rauni lokacin da aka fallasa su ga hasken rana, sa’an nan kuma su wargaje zuwa ƙanana da ƙanana, a ƙarshe su samar da wannan yanki na filastik mai girman millimita, wanda muke kira microplastic.”– Carlos Duarte, in ji marubucin binciken Chris Mooney na The Washington Post.“Wannan tsari yana ɗaukar shekaru da yawa zuwa shekaru da yawa.Don haka irin abubuwan da muke gani sun nuna cewa sun shiga cikin teku shekaru da dama da suka gabata.”
A cewar Schlossberg, ton miliyan 8 na robobi na shiga cikin tekunan duk shekara, kuma a yau kimanin tan miliyan 110 na robobi ke taruwa a cikin ruwan duniya.Yayin da sharar robobi a cikin ruwan Arctic bai kai kashi ɗaya cikin ɗari na jimilar ba, Duarte ya shaidawa Muni cewa an fara tara sharar robobi a yankin Arctic.Shekaru goma na robobi daga gabashin Amurka da Turai har yanzu suna kan hanya kuma a ƙarshe za su ƙare a cikin Arctic.
Masu bincike sun gano gyres da yawa a cikin tekunan duniya inda microplastics ke taruwa.Abin da ke damun yanzu shine cewa Arctic zai shiga wannan jerin."Wannan yanki ya mutu, magudanar ruwa suna barin tarkace a saman," in ji marubucin binciken Maria-Luise Pedrotti a cikin wata sanarwa da aka fitar."Wataƙila muna shaida samuwar wani rumbun ƙasa a duniya ba tare da cikakken fahimtar haɗarin da ke tattare da flora da fauna na gida ba."
Ko da yake a halin yanzu ana binciken wasu ra'ayoyin da ake amfani da su don tsaftace tarkacen ruwa daga cikin robobi, musamman aikin tsaftar teku, masu binciken sun kammala a cikin wata sanarwa da aka rabawa manema labarai cewa, mafita mafi kyau ita ce a kara himma wajen hana bayyanar robobi. na farko.A cikin teku.
Jason Daley marubuci ne na Madison, Wisconsin wanda ya kware a tarihin halitta, kimiyya, balaguro, da muhalli.An buga aikinsa a cikin Discover, Kimiyyar Kimiyya, Waje, Jaridar maza da sauran mujallu.
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