Ucwaningo olwenziwe ngabacwaningi abavela ku I-University Institute of Water Research kanye noMnyango Wezemvelo we Universidad de Granada Kubonisa ukuthi umnikelo wothuli oluvela oGwadule LwaseSahara uyakwazi ukukhulisa indima yoLwandle iMedithera njengosinki we-CO2.2.
Uyini usinki we-CO?2? Yindawo ekhona ekwazi ukumunca i-CO2 kusuka emkhathini futhi ungawubuyiseli emjikelezweni futhi, kodwa ukuthi CO2 ishiya ukujikeleza komkhathi.
Lolu cwaningo, olwenziwe ngaphakathi kwephrojekthi IZIMPAWU, ibonisa ukuthi uLwandle LwaseMedithera lusebenza njenge-CO sink2 umkhathi ezindaweni zolwandle oluvulekile. Inesibopho sokuqeda i-CO2 yomjikelezo kulezi zindawo, kodwa isebenza njengomthombo we-CO2 ogwini, lapho ikwazi ukuyikhiqiza. Lokhu kubili kubalulekile ekuqondeni ukubaluleka kweMedithera njengosinki nomthombo we-CO2.
Ngokusekelwe kulokhu kutholakala, imizamo yenziwe ukufakazela ukuthi lezi zimiso zemvelo ezisebenza njengamasinki nemithombo ye-CO2 angaphendula ukwanda kokungena kothuli okuvela eSahara kanye nasemisebeni ye-ultraviolet. Ukubaluleka kokuhlola impendulo yalezi zimiso zemvelo kulezi ziguquguqukayo zilele eqinisweni lokuthi ziyizici ezibaluleke kakhulu zoshintsho lwembulunga yonke oluthinta isifunda saseMedithera.
Imiphumela yokuhlolwa okwenziwe in situ Akhombisa umthamo okufanele ulwelwe lube nawo ukwazi ukumunca i-CO2 kusuka emkhathini ngakho-ke sebenza njengosinki. Umbhali walo mbiko, uMarco Jabalera Cabrerizo, usebenza eMnyangweni Wezemvelo eNyuvesi yaseGranada.
Umcwaningi uye waqokomisa ukuthi phakathi namashumi eminyaka adlule, ukungena kothuli lwaseSahara kanye nokwanda kokuchayeka emisebeni ye-ultraviolet kungagqamisa. Indima yoLwandle iMedithera njengomlawuli wamazinga e-CO22 esikhathini esizayo esiseduze kakhulu. Yingakho imiphumela yalezi zifundo ifaneleka kakhulu uma siyibeka esimweni sokushintsha kwesimo sezulu samanje, njengoba ingasitshela ukuthi i-ecosystem yasolwandle izoziphatha yini njengoba i-CO2 icwila.2 noma njengemithombo esikhathini esizayo. Ngaphezu kwalokho, kubalulekile ukucabangela ukuthi kanjani ukufudumala kwezwe kunomthelela kulezi zinqubo.
Indima yothuli lwaseSahara kumjikelezo wekhabhoni
Uthuli oluvela oGwadule LwaseSahara, lapho luthwalwa umoya lubheke oLwandle iMedithera, lungaba nemiphumela eminingi ku-ecosystem yasolwandle. Lolu thuli aluhlinzeki nje kuphela ngezakhi ezibalulekile ezifana ne-phosphorus ne-iron, ezidingekayo ekwenzeni i-photosynthesis, kodwa futhi zingashintsha i-chemistry yamanzi futhi ngaleyo ndlela zibe nomthelela ekhonweni lolwandle lokumunca i-CO.2. Ukuze uqonde kangcono ukuthi le nqubo isebenza kanjani, kubalulekile ukwazi ukuthi Isimo sezulu saseMedithera isebenzisana nalawa ma-dynamics.
Lesi simo, esaziwa ngokuthi ukuvundiswa kolwandle, ingathuthukisa ukukhula kwe-phytoplankton, yona edlala indima ebalulekile ekubanjweni kwekhabhoni. Ngakho-ke, i-algae isebenzisa i-CO2 ngenxa ye-photosynthesis yayo, inciphisa ukugxila kwayo emanzini futhi ikhulise ukumuncwa kwayo kwegesi emkhathini. Kuyaphawuleka ukuthi, mayelana nale nqubo, ucwaningo olumayelana imvelo yasolwandle kanye neqhaza lazo ekuguqukeni kwesimo sezulu Kubalulekile ukuqonda umsebenzi wayo.
Kodwa-ke, ukwanda kokungena kothuli kungase kube nemiphumela emibi. Isibonelo, izinguquko ku-acidity yamanzi zingathinta impilo yezinto eziphilayo zasolwandle ezincike ekulinganiseni kwamakhemikhali olwandle, ngakho-ke kubalulekile ukufunda ukuthi I-Mediterranean isengozini yokushintsha kwesimo sezulu..
Imiphumela yocwaningo lwe-METAS
Ucwaningo lwephrojekthi ye-METAS luveze ukuthi uLwandle iMedithera lusebenza ngendlela embaxambili, ekubeni a Usinki we-CO2 olwandle oluvulekile kanye nomthombo ezindaweni ezisogwini. Lokhu kutholakala kubalulekile ekuqondeni indlela imvelo eziphatha ngayo lapho ibhekene nokushintsha kwesimo sezulu.
Ukuchayeka emisebeni ye-ultraviolet (UV) kanye nokuhlukahluka kokungena kothuli kuthinta ikhono lolwelwe lokumunca i-CO2. Ngesikhathi sokuhlolwa, kwaphawulwa ukuthi ukwanda kwemisebe ye-UV yehlisa ukusebenza kahle kwe-photosynthesis kwezinye izinhlobo ze-algae, ezingabeka engcupheni umsebenzi wazo njengamasinki ekhabhoni. Lokhu kugqamisa ukubaluleka kokuphenya ukuthi Ukushintsha kwesimo sezulu kuthinta lezi zimiso zemvelo.
Umthelela wokushintsha kwesimo sezulu eMedithera
Ukushintsha kwesimo sezulu kubangela ukwanda kwezinga lokushisa kwamanzi aseMedithera, okubuye kube nomthelela emaphethini emvula kanye nemvamisa yamagagasi okushisa. Lezi zinguquko zingaba nomthelela omkhulu kubhayoloji yasolwandle kanye nekhemistri yamanzi. Ngaphezu kwalokho, njengoba umjikelezo wekhabhoni ubalulekile, kuyathakazelisa ukubona ukuthi kanjani izitshalo zivumelana nokushintsha kwesimo sezulu.
Amazinga okushisa akhuphukayo nawo angaba nomthelela ekwandeni kokukhishwa kwe-CO2.2 kusuka olwandle kuya emkhathini, kudala umjikelezo ononya obhebhethekisa ukufudumala kwembulunga yonke. Ngakho-ke, ucwaningo kule ndawo alubalulekile nje kuphela ukuqonda amandla e-CO2, kodwa futhi ukubikezela izimo zesimo sezulu esizayo. Maqondana nalesi sihloko, isifundo on umphumela wesiqhingi sokushisa ihambisana ikakhulukazi nezilinganiso zesikhathi esizayo.
Amaphrojekthi ocwaningo ahlobene
Le phrojekthi I-Carboocean Kuyisinyathelo saseYurophu esihlose ukulinganisa ukuziphatha kwe-CO2 olwandle eminyakeni engu-200 edlule. Le phrojekthi incike ekuqoqweni kwedatha mayelana nosawoti, izinga lokushisa, nokugxila kwe-chlorophyll ngokusebenzisa izinkundla ezihlukahlukene zocwaningo, okuhlanganisa imikhumbi yocwaningo efana ne-Vell Marí.
Idatha etholiwe ibalulekile ekuqondeni ukuthi imvelo yasolwandle ingasebenza kanjani njengamasinki noma imithombo ye-CO2. Ukuqonda ibhalansi yekhabhoni kubalulekile ekwenzeni izinqumo ezinolwazi mayelana nezinqubomgomo zemvelo kanye nokuthuthukisa amasu okunciphisa ukuguquguquka kwesimo sezulu. Ngalo mqondo, izifundo nazo ziyenziwa imiphumela yokuguquguquka kwesimo sezulu emazweni ahlukene.
Abacwaningi abathintekayo kula maphrojekthi bafuna ukuchaza indima yemvelo emjikelezweni wekhabhoni nokuthi bangazivumelanisa kanjani nezimo zemvelo ezishintshayo. Ucwaningo nge ukushintsha kwesimo sezulu kanye nezilwane ezincelisayo iyindawo enentshisekelo kulo mongo.
Ucwaningo ngoLwandle iMedithera lukhombe indima yalo ebalulekile njengosinki we-CO2.2. Njengoba izimo zesimo sezulu ziqhubeka nokushintsha, kubalulekile ukuqhubeka nokucwaninga nokuvikela lesi simiso semvelo. Ukumuncwa kwe-CO2 Kubalulekile ukunciphisa imiphumela yokuguquguquka kwesimo sezulu nokuvikela izinhlobonhlobo zezinto eziphilayo zasolwandle.
Ngaphezu kwalokho, kubalulekile ukuqhubeka nemizamo yokonga nokubuyisela ezindaweni ezisogwini, kanye nokugqugquzela izindlela ezisimeme ezinciphisa ukukhishwa kwesisi esingcolisa umoya. Ukusebenzisana kwamazwe ngamazwe kuyisihluthulelo sokubhekana nalezi zinselele kanye nokuvikela imvelo yasolwandle iMedithera kanye nekhono layo lokusebenza njengosinki wekhabhoni esikhathini esizayo.
