Te Pānga o ngā Tukunga Hau Kākāriki ki te Moana
Ko ngā hau kati kōtuhi (GHG) he hau e mau ana i te wera i roto i te āhuarangi o Papatūānuku, ka piki ake te pāmahana o te ao, e mōhiotia ana ko te whakamahana o te ao. Ko te CO2 (hauora waro), te CH4 (methane), me te N2O (hauota hauota) ētahi tauira o ngā GHG nui. Ko tētahi pānga nui o te tukunga GHG ko ngā pūnaha rauropi moana. Ka matapakihia e tēnei tuhinga ngā pānga o te tukunga hau kati kōtuhi ki te moana, tae atu ki ngā huringa matū, koiora, me te ā-tinana ki te taiao moana.
1. Te mimiti waro i te moana
Kei ngā wai o te moana te kaha ki te mimiti i te CO2 mai i te āhuarangi. E mōhiotia ana tēnei tukanga ko te "papu waro moana." E mimiti ana te moana i te 30% o te tapeke o te CO2 e tukuna ana ki te āhuarangi. Heoi anō, kāore he hua o tēnei mimiti. Ina rewa te CO2 ki roto i te wai moana, ka puta he waikawa waro, ka whakaheke i te pH o te wai moana, ka puta he āhuatanga e mōhiotia ana ko te waikawa o te moana.
2. Te Whakawaikawa o te Moana
Ko te whakakawakawa o te moana tētahi o ngā pānga nui o ngā tukunga hau kati kōtuhi. He maha ngā pānga kino o tēnei hekenga o te pH ki ngā mea ora o te moana. Ko ngā mea ora e hiahia ana ki te konupūmā kāponāte hei hanga i ō rātou anga me ngā angaanga, pērā i ngā korara, ngā mokomoko, me ētahi momo plankton, ka tino pāngia. I te mea ka nui ake te waikawa o ngā wai, ka heke te kaha o ēnei mea ora ki te whakaputa me te pupuri i ō rātou hanganga konupūmā kāponāte, ka taea te whakararu i ngā toka korara me te whakaiti i ngā taupori o ētahi mea ora.
3. Te Pikinga o te Pāmahana o te Moana
Ko te huringa āhuarangi e hua mai ana i ngā hau kati kōtuhi ka hua ake te pikinga o te pāmahana o te moana. He pānga nui tēnei pikinga o te pāmahana ki ngā mea ora o te moana me te hanganga whānui o ngā pūnaha rauropi moana. Hei tauira, kua whakaatuhia te pikinga o te pāmahana o te moana ka puta te mā o te korara. Ka puta tēnei mā i te wā e peia ana e ngā korara, i raro i te ahotea wera, ngā zooxanthellae, arā, ngā rimurimu whakaahua e noho ana i roto i ngā kiko korara, ā, e whakarato ana i te nuinga o te kaha o te korara. Ki te kore ēnei rimurimu, ka ngaro te tae me te kaha o ngā korara, ā, ka mate i te mutunga mēnā ka mau tonu te ahotea.
4. Te Whakangaromanga o te Mekameka Kai Moana
Ka pāngia te mekameka kai moana e ngā panonitanga o te pāmahana o te moana me te waikawa o te moana. He tino tairongo ngā phytoplankton, te pūtake o te mekameka kai moana, ki ngā panonitanga o te pāmahana me te waikawa o te wai. Mēnā ka whakararuraruhia ngā hapori phytoplankton, ka heke rānei tō rātou tokomaha, ka pā nui tēnei ki ngā rauropi moana kei runga ake i te mekameka kai, tae atu ki ngā ika, ngā manu moana, me ngā kararehe moana.
5. Te Pikinga o te Taumata Moana
Ka whai wāhi atu hoki ngā hau kati kōtuhi ki te pikinga o te taumata moana, ko te nuinga o tēnei mea nā te whānui o te wai (te whānui o te wai e whakamahana ana) me te rewa o te hukapapa o te whenua. Ka mōrearea ngā pūnaha rauropi takutai me ngā hapori tangata e whakawhirinaki ana ki a rātou i te pikinga o te taumata moana. Ka waipuketia, ka memeha rānei ngā mangrove, ngā repo tote, me ētahi atu pūnaha rauropi takutai. Ehara i te mea ka pā noa tēnei ki te kanorau koiora engari ka whakaitihia hoki te kaha tūturu o ngā pūnaha rauropi takutai ki te tiaki i ngā takutai mai i ngā awha me ngā waipuke.
6. Te Pūmautanga me te Nekehanga o te Pūnaha Rauropi
Ka whakararuraruhia ngā mea ora o te moana e ngā panonitanga o te pāmahana me te waikawa, ka pā kino pea tēnei ki te pūnaha rauropi. Hei tauira, ka heke pea te taupori o ngā rākau o te ngahere rimurapa, engari ka heke pea ngā momo ki ngā wāhi e pai ake ana mō ō rātou āhuatanga taiao e huri haere ana. Ka arahi pea tēnei ki ngā pakanga ki ngā momo o te rohe me ngā panonitanga ohorere i roto i te pūnaha rauropi hou.
7. Ngā Pānga ki te Hī ika me te Oranga Hapori o te Takutai Moana
Ka pā tika ngā panonitanga o ngā pūnaha rauropi moana nā ngā mahi a te tangata ki te rāngai hī ika. Ko te hekenga o ngā taupori ika me te neke haere o ngā momo ika ka wero i te kaha o ngā kaihao ika ki te pupuri i ā rātou hopunga me ā rātou oranga. Hei tāpiri, ko ngā hapori takutai e whakawhirinaki ana ki te moana hei puna moni me te kai matua ka pā ki ngā wero nui e pā ana ki te wātea o te kai me te haumarutanga ōhanga.
8. Ngā Otinga me ngā Whakarerekētanga
Me whai huarahi whakauru hei aro atu ki te pānga o ngā tukunga hau kati kōtuhi ki ngā moana. Ko te whakaiti i ngā tukunga GHG he taahiraa tuatahi nui, tae atu ki te whakamahi i te pūngao hou, te whakatipu ngahere, me te whakapiki i te whai huatanga o te pūngao. Mā te tiaki me te whakaora i ngā pūnaha rauropi takutai, pērā i ngā mangrove, ngā toka korara, me ngā mania tarutaru moana, ka āwhina i te whakaiti i ngā pānga o te huringa āhuarangi mā te whakarato i ngā toa waro tūturu me ngā nohoanga nui mō ngā momo momo.
Te Katinga
Kāore i te rangi anake ngā pānga o ngā tukunga hau kati kōtuhi engari kei roto hoki i te moana hohonu. Ko te waikawa o te moana, te mā o te korara, te whakararuraru i ngā mekameka kai moana, me ngā tūmomo mōrearea ki ngā mahi hī ika, he torutoru noa iho ēnei o ngā raruraru maha e pā ana ki a tātou. Heoi, mā te mahi tahi ki te whakaiti i ngā tukunga me te tiaki me te whakaora i ngā pūnaha rauropi moana me te takutai moana, kei reira te tumanako ka taea te whakaiti i ēnei pānga kino me te tiaki i te hauora me te kanorau koiora o te moana mō ngā whakatipuranga o muri mai.
