Tafkin Bisina
| Tafkin Bisina | |
|---|---|
| General information | |
| Tsawo | 30 km |
| Fadi | 9 km |
| Yawan fili | 210 km² |
Vertical depth (en)  | 20 ft |
| Labarin ƙasa | |
 | |
| Tsarin Daidaiton Labarin Kasa | 1°36′28″N 33°57′43″E / 1.6078°N 33.9619°E |
| Kasa | Uganda |
| Hydrography (en) | |
| Inflow (en) |
duba
|
| Outflows (en) | Tafkin Kyoga |
Tafkin Bisina, wanda kuma aka sani da Tafkin Salisbury da Tafkin Bisinia, tafki ne mai ruwa-ruwa a gabashin Uganda . Tafkin tauraron dan adam ne na Tafkin Kyoga, wanda yake malalawa a ciki, kuma su biyun sun haɗu kai tsaye da dausayin papyrus. A lokacin ruwan sama mai yawa, Tafkin Bisina zai iya kaiwa har zuwa 6 m (20 ft) mai zurfi kuma sau da yawa yana haɗuwa kai tsaye da ƙaramin tafkin Opeta, amma a lokacin rani, an raba su biyun a sarari.
Karewa da muhalli
[gyara sashe | gyara masomin]Tafkin Bisina yana ɗaya daga cikin yankuna 33 masu muhimmanci na tsuntsaye na Uganda kuma tun daga shekara ta 2006 wani wuri ne mai laushi na Ramsar na muhimmancin duniya.[1]
Tafkin yana da mahimmanci ga Kifi, musamman wasu haplochromine cichlids masu barazana kamar Haplochromis orthostoma, H. argenteus (yana bayyana cewa ya ɓace daga babban kewayonsa a Tafkin Victoria), H. latifasciatus, H. lividus, H. martini (yana bayyana sun ɓace daga manyan kewayenta a Tafkin Victorian), H. maxillaris, H. nubilus, H".H. parvidens, H. phytophagus da wasu nau'ikan da ba a bayyana su ba.[2] Kodayake an gabatar da perch na Nilu zuwa Tafkin Bisina a farkon shekarun 1970, binciken da aka yi kwanan nan bai gano wannan nau'in ba, wanda aka haɗa shi da lalacewar cichlids da yawa na haplochromine a wasu wurare. An kuma gabatar da wasu nau'ikan tilapia a Tafkin Bisina kuma har yanzu suna nan, tare da 'yan asalin Singida da Victoria tilapias.[3][2] Sauran, nau'ikan kifi da aka samo a Tafkin Bisina sun haɗa da kifin marmara, da nau'ikan nau'ikan catfish, Tetras na Afirka da Kifi giwa.[3]
Binciken tsire-tsire na ruwa na Lake Bisina ya rubuta nau'ikan tsire-shuke na ruwa 15 tare da Chara spp. (algae mai launin kore mai yawa). Wannan binciken ya tsara tsarin tsire-tsire na ruwa a fadin tafkin kuma ya ba da rahoton al'ummomin tsire-shuke da ke da alaƙa da zurfin ruwa da tsabtace ruwa.
Yankunan tafkin Bisina suna tallafawa ƙwararrun tsuntsaye. Binciken NatureUganda ya lura da aikin kiwo da mahimmancin kiyayewa na papyrus da wuraren da ke cike da ambaliyar ruwa a cikin tafkin Bisina. Wani rahoto na binciken da aka yi niyya ya rubuta Fox's Weaver (Ploceus spekeoides) a matsayin nau'in da aka ƙuntata sosai da ke da alaƙa da wuraren da ke da ambaliyar ruwa a arewa maso gabashin Uganda, gami da tafkin Bisina da gefen.
Rahoton asalin NatureUganda ya nuna matsin lamba daga noma, kiwo, jujjuyawar wuri mai laushi da kuma zama a matsayin manyan haɗari ga ayyukan wuri mai lauri da bambancin halittu a cikin tsarin Bisina-Opeta. Rahotanni na filin da aka mayar da hankali ga jinsuna sun kuma nuna asarar mazaunin da gyare-gyare a cikin wuraren da ambaliyar ruwa ke faruwa a lokacin a matsayin babbar barazana ga tsuntsayen da aka ƙuntata da aka rubuta a cikin tafkin Bisina.
Yanayin ƙasa da ilimin ruwa
[gyara sashe | gyara masomin]Tafkin Bisina yana da nisan kilomita 15 a arewacin garin Kumi kuma kimanin kilomita 20 a gabashin Soroti . Tafkin ya rufe kimanin 192 km2 kuma yana zaune a kusa da 1,050 m sama da matakin teku. An kewaye shi da tafkin papyrus da kuma babban filin ambaliyar ruwa da ke da alaƙa da Kogin Apedura, wanda ke zubar da sassa na Karamoja zuwa tsarin tafkin.
Tafkin bai da zurfi. A cikin samfurori tsakanin Fabrairu 2008 da Agusta 2009, zurfin a wuraren samfurori ya kasance daga 0.6 zuwa 5.0 m, tare da matsakaicin 2.89 m.
Matsayin Ramsar da Muhimmin Yankin Tsuntsaye
[gyara sashe | gyara masomin]An sanya tsarin tafkin Bisina a matsayin shafin Ramsar a ranar 15 ga Satumba 2006. Gidan Ramsar ya rufe hekta 54,229 kuma an jera shi don gundumomin Kumi, Katakwi da Soroti. Tafkin Bisina da mafi girman yankin Bisina-Opeta an kuma bayyana su a matsayin Muhimman Yankunan Tsuntsaye a cikin aikin kiyayewa na Uganda.
Mutane da hanyoyin rayuwa
[gyara sashe | gyara masomin]Al'ummomin da ke kewaye da tsarin Bisina-Opeta sun dogara da albarkatun ƙasa. Amfani na cikin gida da aka rubuta a cikin aikin tushe sun haɗa da kamun kifi, shayar da dabbobi, da girbi kayan ruwa, tare da fadada zama da noma a yankunan da ke cikin ruwa. Rahoton tushe kuma yana da alaƙa da ƙara yaduwa da rage ayyukan ambaliyar ruwa zuwa ƙasa da matsin lamba, gami da lalacewa a cikin abubuwan da ke cikin ruwa da ke ciyar da tsarin.
Manazarta
[gyara sashe | gyara masomin]- ↑ Ramsar Convention on Wetlands. "The Annotated Ramsar List: Uganda". Archived from the original on 7 January 2013. Retrieved 28 June 2012.
- 1 2 Wanda, F.; B. Gidudu; S. Wandera; R.S. Copeland; J.P. Cuda; W.A. Overholt (2011). "Herbivory of Hydrilla verticillata by Cichlid Fish in Lake Bisina, Uganda". Journal of East African Natural History. 100 (1&2): 113–121.
- 1 2 Cite error: Invalid
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