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Letsha la Bisina

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Letsha la Bisina, le le itsegeng gape jaaka Letsha la Salisbury le Letsha la Bisinia, ke letsha la metsi a a phepa kwa botlhaba jwa Uganda. Ke letsha la sathalaete la Letsha la Kyoga, le le elelang mo go lone, mme bobedi jwa tsone di golagantswe ka tlhamalalo ke matamo a papyrus.[1]Ka nako ya dipula tse di nang thata, Letsha la Bisina le ka nna boteng jwa dimetara di le borataro mme gantsi le golaganya ka tlhamalalo le letsha le lennye la Opeta, mme ka nako ya dipula tse di se nang metsi, tse pedi tseno di kgaogantswe sentle.[2]

[fetola | Fetola Motswedi]

Letsha la Bisina ke lengwe la mafelo a le masome a mararo le boraro a a botlhokwa a dinonyane kwa Uganda mme fa e sale ka ngwaga wa dikete tse pedi le borataro (2006) ke lefelo le le botlhokwa la boditšhabatšhaba le le mo lenaaneng la Ramsar.[3]

Letsha le le botlhokwa mo ditlhaping, segolo thata tse di tshosediwang tsa haplochromine cichlids jaaka Haplochromis orthostoma,[4]H. argenteus (go lebega e nyeletse mo lefelong la yone le legolo mo Letsha la Victoria), H. latifasciatus, H. lividus, H. martini (go lebega e nyeletse mo lefelong la yone le legolo mo Letsha la Victoria), H. maxillaris, H. nubilus, H. parvidens, H. [2]phytophagus le mefuta e mengwe e e sa tlhalosiwang.[ 10] Le fa Nile perch e ne ya tsenngwa mo Letsheng la Bisina mo masimologong a sekete , makgolo a robabongwe le masome a supa (1970), dipatlisiso tsa bosheng ga di a ka tsa lemoga mofuta ono, o o amilweng ke go nyelela ga di-haplochromine cichlids tse dintsi kwa mafelong a mangwe. Mefuta e le mmalwa ya tilapia le yone e ne ya tsenngwa mo Letsheng la Bisina mme e sa ntse e le teng, mmogo le di-tilapia tsa Singida le Victoria. [ Mefuta e mengwe ya ditlhapi e e anameng thata e e fitlhelwang kwa Letsheng la Bisina e akaretsa marble lungfish, le mefuta e e farologaneng ya catfish, African tetras le elephantfish. [2]

Dipatlisiso tsa dimela tsa metsi tsa Letsha la Bisina di kwadile mefuta e le lesome le botlhano ya dimela tsa metsi tsa ditshika mmogo le Chara spp. (mofuta wa bolele jo bo tala jwa disele tse dintsi).[5]Patlisiso e e tshwanang e ne ya dira dimmapa tsa dimela tsa metsi go kgabaganya letsha mme ya bega ka dimela tse di amanang le boteng le metsi a a phepa. [5]

Mafelo a a bongola a Letsha la Bisina a thusa dinonyane tse di kgethegileng tsa mafelo a a bongola. Dipatlisiso tsa NatureUganda di lemogile tiro ya tsadisano le botlhokwa jwa tshomarelo ya papyrus le mafelo a a tletseng metsi a a tletseng metsi ka dipaka mo lefelong le le nang le metsi la Bisina. [6]Pego ya patlisiso e e tsepamisitsweng mo go yone e kwadile gore Fox's Weaver (Ploceus spekeoides) ke mofuta o o nang le mafelo a a lekanyeditsweng thata a a amanang le mafelo a a tletseng metsi ka dipaka kwa bokone-botlhaba jwa Uganda, go akaretsa letsha la Bisina le mafelo a a fa thoko ga letsha.[7]

Nature Uganda baseline reporting e bontsha kgatelelo go tswa mo go lemeng, go fula, go fetola mafatshe a a bongola le sedimentation jaaka dikotsi tse di botlhokwa mo ditirong tsa mafatshe a a bongola le ditshedi tsa mefutafuta mo tsamaisong ya mafatshe a a bongola a Bisina  ⁇ Opeta. Dipego tse di ikaegileng ka mefuta ya ditshedi di supa gape go latlhegelwa le go fetolwa ga tikologo ya dijalo mo mafelong a a tletseng metsi ka dipaka jaaka matshosetsi a magolo mo dinonyaneng tsa mafelo a a tletseng metsi tse di begilweng mo lefelong le le atolositsweng la letsha la Bisina.[8]

Letsha la Bisina le dikilometara di le lesome le botlhano kwa bokone jwa toropo ya Kumi le dikilometara di le masome a mabedi kwa botlhaba jwa Soroti. Letsha leno le na le bogolo jwa dikilometara di le lekgolo le masome a marataro le bobedi mme le bogodimo jwa dimetara di ka nna sekete le masome a matlhano go tswa mo boalong jwa lewatle.[3][7]E dikologilwe ke seretse sa papyrus le lebala le le atlhameng la merwalela le le golaganeng le Noka ya Apedura, e e ntshang dikarolo tsa Karamoja go ya kwa letsheng la lewatle.[3]

Letsha leno ga le boteng. Mo go tseyeng disampole mo masimong gare ga kgwedi ya Tlhakole ka ngwaga wa dikete tse pedi le borataro (2008) le ka kgwedi ya Phatwe ka ngwaga wa dikete tse pedi le borobabongwe (2009), boteng kwa mafelong a go tsewang disampole go ne go le magareng ga 0.6 go ya go 5.0 m, ka palogare ya 2.89 m.[3]

Maemo a Ramsar le a Lefelo le le Botlhokwa la Dinonyane

[fetola | Fetola Motswedi]

Letša la Bisina Wetland System le ne la tlhophiwa go nna lefelo la Ramsar ka kgwedi ya Lwetse e le lesome le botlhano ka ngwaga wa dikete tse pedi le borataro(2006). Lefelo la Ramsar le akaretsa diheketara di le 54 229 mme le kwadisitswe mo dikgaolong tsa Kumi, Katakwi le Soroti. [9]Letsha la Bisina le lefelo le le golo la Bisina  ⁇ Opeta le lone le tlhalosiwa jaaka mafelo a a botlhokwa a dinonyane mo tirong ya tshomarelo ya lefelo la Uganda. [7]

Batho le ditiro tsa bone

[fetola | Fetola Motswedi]

Ditšhaba tse di dikologileng thulaganyo ya Bisina-Opeta di ikaegile ka metswedi ya mafatshe a a bongola. Ditiriso tsa selegae tse di kwadilweng mo tirong ya motheo di akaretsa go thaya ditlhapi, go nosetsa leruo, le go roba didiriswa tsa mafatshe a a bongola, mmogo le go atolosa bonno le temo mo mafelong a a bongola a a kwa thoko. [8]Dipegelo tsa motheo gape di golaganya go oketsega ga siltation le go fokotsega ga ditiro tsa go thiba merwalela le kgatelelo ya mmu le ya metsi, go akaretsa go senyega ga metsi a a kwa godimo a a fepang tsamaiso. [6]

Metswedi

[fetola | Fetola Motswedi]
  1. ↑ Green, J. (2009). "The Kyoga Catchment". In H.J. Dumont (ed.). The Nile. Monographiae Biologicae. Vol. 89. Springer Science + Business Media B.V. pp. 205–214. ISBN 978-1-4020-9725-6.
  2. 1 2 3 Mbabazi, D. (2009). "Rapid assessment of the fish biodiversity of the Mburo-Nakivali wetland systems and Opeta-Bisina wetland systems, Uganda". In M.O. Opige; A. Byaruhanga (eds.). Ecological baseline surveys of Lake Bisina, Lake Opeta, Lake Mburo and Nakivali wetlands systems. Kampala, Uganda, Nature Uganda. pp. 75–84.
  3. 1 2 3 4 Ramsar Convention on Wetlands. "The Annotated Ramsar List: Uganda". Archived from the original on 7 January 2013. Retrieved 28 June 2012
  4. ↑ Froese, Rainer; Pauly, Daniel (eds.). "Haplochromis orthostoma". FishBase. September 2019 version.
  5. 1 2 Gidudu, Brian; Copeland, R. S.; Wanda, F.; Ochaya, H.; Cuda, J. P.; Overholt, W. A. (2011). "Distribution, interspecific associations and abundance of aquatic plants in Lake Bisina, Uganda" (PDF). Journal of Aquatic Plant Management. 49: 19–27. Retrieved 2025-12-18.
  6. 1 2 Odull, Michael Opige; Byaruhanga, Achilles (2009). Ecological Baseline Surveys of Lake Bisina, Lake Opeta, Lake Mburo and Nakivali Wetlands Systems (Report). NatureUganda (The East Africa Natural History Society). Retrieved 2025-12-18
  7. 1 2 3 Fox’s Weaver Survey Report (2019) (PDF) (Report). NatureUganda. 2019. p. 2. Retrieved 2025-12-18
  8. 1 2 Fox’s Weaver Survey Report (2019) (PDF) (Report). NatureUganda. 2019. p. 2. Retrieved 2025-12-18
  9. ↑ The List of Wetlands of International Importance (Ramsar Sites) (PDF) (Report). Ramsar Convention Secretariat. 2024-11-22. p. 50. Retrieved 2025-12-18
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