Tafkin Retba

Tafkin Retba
General information
Height above mean sea level (en)	0 m
Tsawo	3.85 km
Fadi	1 km
Yawan fili	3 km²
Vertical depth (en)	3 m
Labarin ƙasa
Tsarin Daidaiton Labarin Kasa	14°50′20″N 17°14′04″W
Kasa	Senegal
Territory	Tivaouane Peulh-Niaga (mul)
Ƙasantuwa a yanayin ƙasa	Cap-Vert (en) Grande Côte (en) Niayes (en)

Tafkin Retba, wanda aka fi sani da Lac Rose (ma'ana "kogi mai launin ruwan kasa"), yana arewacin tsibirin Cap Vert a Senegal, kimanin 35 km (22 mi) (22 arewa maso gabashin babban birnin, Dakar, a arewa maso yammacin Afirka. An sanya masa suna ne saboda ruwan ruwan ruwan hoda ya haifar da Dunaliella salina algae kuma an san shi da yawan gishiri, har zuwa 40% a wasu yankuna. Launi yawanci yana da ƙarfi sosai daga ƙarshen Janairu zuwa farkon Maris, a lokacin fari. Ambaliyar ruwa a watan Satumbar 2022 ba wai kawai ta katse ayyukan girbi na gishiri a tafkin ba, har ma ta haifar da tafkin ya rasa launi, wanda ya haifar da mummunar tasiri ga yawon bude ido. Koyaya, tun daga 2025, tafkin ya sake samun wasu launukansa.

Tafkin ya kasance tun daga 2025 a karkashin la'akari da UNESCO a matsayin Gidan Tarihin Duniya.

Bayyanawa

Tafkin yana da nisan 35 km (22 mi) (22 arewa maso gabashin Dakar, ya rabu da Tekun Atlantika ne kawai ta hanyar karamin hanyar dunes, kuma an sanya masa suna saboda ruwan ruwan ruwan hoda, wanda Dunaliella salina algae ya haifar. Algae yana samar da jan pigment don taimaka musu su shawo kan hasken rana, wanda ke ba su makamashi don ƙirƙirar ATP, nucleotide wanda ya zama dole don samar da makamashi. Launi yana bayyane musamman a Lokacin fari (daga Nuwamba zuwa Mayu) kuma ba a bayyane yake a lokacin ruwan sama (Yuni zuwa Oktoba).

Gishiri

An san tafkin da yawan gishiri (har zuwa 40% a wasu yankuna), wanda yafi saboda shigar ruwan teku da kuma narkewar sa. Kamar Tekun Gishiri, tafkin yana da isasshen ƙarfi wanda mutane zasu iya iyo cikin sauƙi.

Ana fitar da gishiri a duk faɗin yankin ta hanyar masu tarawa 3,000, maza da mata daga ko'ina cikin yammacin Afirka, waɗanda ke aiki sa'o'i 6-7 a rana. Suna kare fatarsu da man shanu na Karité (man shanu), wani abu da aka samar daga kwayoyin da ke taimakawa wajen kauce wa lalacewar nama. Masu kamun kifi na Senegal suna amfani da gishiri don adana kifi, wanda shine sinadarin da ke cikin girke-girke na gargajiya da yawa, gami da abincin ƙasa, wanda shine haɗin kifi da shinkafa da ake kira Thieboudienne. Kimanin tan 38,000 na gishiri ana girbe su daga wannan tafkin a kowace shekara, wanda ke ba da gudummawa ga masana'antar samar da gishiri ta Senegal. Senegal ita ce mai samar da gishiri a Afirka.

Ma'aikacin girbi gishiri daga tafkin

Ambaliyar ruwa

A cikin 2022, ambaliyar ruwa mai tsanani da ruwan sama ya haifar a Dakar ta lalata tafkin. Ambaliyar ta rushe bakin tekunta kuma ta gurɓata ruwanta, ta juya halayenta mai ruwan hoda zuwa kore. Wannan canjin yana barazana ga yanayin halittu da tattalin arzikin yankin, yana tasiri ga manoma masu gishiri, ma'aikatan jirgin ruwa, masu sayar da kayan tunawa, da yawon bude ido. Ambaliyar ta lalata darajar USD $ 696,000 na gishiri, kasuwancin da ke cikin ruwa, kuma ta rushe microbiome na musamman na tafkin, yana jefa girbi na gaba da ziyarar yawon bude ido. Tun daga wannan lokacin tafkin ya sake dawo da launin ruwan hoda.

Dabbobi na daji

Duk da babban salinity na tafkin, wanda zai iya kaiwa sama da 350 g / L a Lokacin fari, an sami blackchin tilapia yana rayuwa a cikin sassan da ke da ruwan sha da ke ciyar da ruwa mai kyau ta hanyar rafi mai saurin lokaci.

Jerin al'adun duniya

UNESCO ta yi la'akari da tafkin Retba a matsayin Wurin Tarihi na Duniya tun daga watan Oktoba na 2005, kuma har yanzu yana nan kamar yadda As of 2026 .