Osimiri Nun

Osimiri Nun, nke a makwaara dị ka Rio Nun, bụ osimiri dị na Bayelsa Steeti, Naịjirịa .  A na-emepụta osimiri ahụ mgbe Osimiri Niger kewara abụọ na Toru-Abubou, nso Agbere Town na Sagbama Local Government Area nke Bayelsa State, na-emepụta Osimiri Nun na Forcados.

Mgbe o si n'osimiri nne na nna ya pụta, Niger, Osimiri Nun na-asọ ihe fọrọ nke nta ka ọ bụrụ kilomita 160 (100 mi)  ndịda ruo Ọgwara Guinea na Akassa . Usoro ya na-aga n'ihu na mpaghara ndi nwere obere ahịhịa na swamps.

Na narị afọ nke 19, Nun bụ ebe azụmahịa n'etiti Europe na Ndị Igbo - nke dị na Aboh.https://www.thisdaylive.com/index.php/2019/03/31/the-river-nun-called-and-gabriel-okara-answered-at-last? Akụkọ azụmaahịa nke osimiri ahụ malitere site n'izu ahia ohu mana emechara were mmanụ nkwụ mbupu dochie ya. Otú ọ dị, na mmalite narị afọ ahụ, ọnụ ahụ kpochiri ekpochi nke ukwuu, na-egbochi ụzọ ahụ. Mgbe emesiri, ndị ahịa malitere iji mmiri ndị ọzọ a na- enweta Osimiri Forcados.

A na-ekwupụta Osimiri Nun na uri nke Gabriel Okara. Abụ ya bụ The Call of the River Nun bụ abụ nostalgic maka osimiri nke na-agafe n'ụlọ ya.

 Mmetọ 
Mmetọ mmanụ na-awụfu anọgidewo na-abụ isi iyi nke ọtụtụ ikpe mba ụwa na mpaghara Niger Delta nke Naijiria. Mmetụta nke obere mmanụ na-agbanye ugboro ugboro na physicochemical, microbial na hydrobiological properties nke Osimiri Nun, isi iyi nke mmiri ọṅụṅụ, nri na ntụrụndụ maka obodo ndị dị na mpaghara ahụ. A chịkọtara ihe nnwale site na ebe nnwale isii n'akụkụ ala Osimiri Nun n'ime izu atọ. Okpomọkụ, pH salinity, turbidity, ngụkọta nke ihe siri ike, ngụcha nke ihe siri elu, oxygen a gbazere agbaze, phosphate, nitrate, ígwè dị arọ, BTEX, PAHs na ihe ndị dị na microbial na plankton iji chọpụta ogo na ọkwa nke mmebi nke osimiri ahụ. A na-eji nsonaazụ ndị e nwetara tụnyere data sitere na ọmụmụ ihe, ụkpụrụ mba na nke mba ụwa. Nsonaazụ nke physicochemical parameters gosipụtara mmebi dị ịrịba ama nke ogo osimiri n'ihi ọrụ mmepụta mmanụ. Turbidity, TDS, TSS, DO, conductivity na ọla dị arọ (Cd, Cr, Cu, Pb, Ni na Zn) mebiri oke mba na nke mba ụwa maka ahụike mmiri ọṅụṅụ. Ha dịkwa elu karịa ọnọdụ mbụ nke osimiri ahụ. Ọzọkwa, e nwere mgbanwe ndị a na-ahụ anya na phytoplankton, zooplankton na ụdị dị iche iche nke ụmụ ahụhụ n'ihi mmetọ mmanụ gafee mpaghara nnwale.

 Ọnọdụ ihu igwe 
Ọnọdụ ihu igwe nke Nun Rivers n'oge a nwere okpomọkụ mmiri bụ 24 °C na nkezi okpomọkụ nke mmiri bụ 24°C.

 Ihe omume 
N'abalị iri abụọ na asaa n'ọnwa Septemba n'afọ 2017, ndị Nun gbawara ụsọ mmiri ya n'otu abalị ma kpuchie ụlọ obibi ndị dị n'akụkụ ụsọ mmiri ahụ na Yenagoa, isi obodo Bayelsa State.

N'abalị iri na isii n'ọnwa Nọvemba n'afọ 2019, a napụtara ndị nta akụkọ anọ si n'ụlọ ntuli aka lọta, n'ọrụ ntuli aka gọvanọ, mgbe ụgbọ mmiri ha dara.

 Ebenside