Mhedzisiro yekushanduka kwemamiriro ekunze iri kukuvadza zviuru zvemarudzi emhuka nezvinomera mupasi rese. Mune ino kesi, isu tinodzokera kuchamhembe kwakadziva kumabvazuva kweAustralia kuti tione Great Barrier Reef iri kutambura imwe yakachena chena yegore rechipiri rakateedzana.
Kana izvi zvikaramba zvichiitika, chii chichaitika kumakorari?
Iyo Great Barrier Reef
Iyo Great Barrier Reef inzvimbo yezvakatipoteredza ingangoita makiromita zviuru mazana maviri nemazana matatu yakaziviswa kuti World Heritage Saiti neUNESCO. Kubuda ropa kunokonzerwa nekuwedzera kwekushisa kwemvura yegungwa nekuda kweshanduko yemamiriro ekunze.
Ichiri mangwanani-ngwanani kuti uzive kana mhedzisiro yayo inoparadza ingafananidzwe nekutsvukisa kwegore rapfuura, ichitarisirwa seyakaipisisa pane yakanyorwa muGreat Barrier Reef, kwakaitika zviitiko zvakafanana muna 1998 na2002.
Izvo hazvichisina basa kana chiitiko ichi chakashata kana chakaipisisa kupfuura cheyakare, zvinongokosha kuti mamiriro ekunze epasi ari kuchinja uye anounza zviitiko zvakanyanyisa kazhinji kuGreat Barrier Reef.
Coral kufa
Yegore rapfuura shanduko yekushanduka kwemamiriro ekunze yakachenesa 22% yemakorari mune ese 2.300-makiromita-akareba ecosystem. Makorari ane hukama hwakakosha hwekudyidzana nemicroscopic algae inonzi zooxanthallae, iyo inopa avo vanogamuchira oksijeni uye chikamu chemakemikari makemikari avanogadzira kuburikidza nefotosinthesisi.
Nekushanduka kwemamiriro ekunze uye kuwedzera kwekushisa, izvi zviri pasi pekushushikana kwezvakatipoteredza, saka makorari mazhinji anodzinga zooxanthallae en masse, uye macoral polyps anosara asina pigment. Sezvo ivo vasina pigment, ivo vanoratidzika senge akajeka pane iwo mafupa emhuka.
Gore rega rega zviuru zvemakorari zvinofa nekuda kweshanduko yemamiriro ekunze uye pamwero watinoramba tichisvibisa, kudziya kwemakungwa nemakungwa hakuregi kukwira.