Mare de Dan Doutchi

Mare de Dan Doutchi ; Mare de Dandoutchi
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Geographical location	Tahoua region , Niger
Tributaries	Zourourou
Drain	Zourourou
	Data
Coordinates	14 ° 14 '53 " N , 4 ° 37' 37" E Coordinates: 14 ° 14 '53 " N , 4 ° 37' 37" E
Altitude above sea level	270 m
surface	17.8 km²
Middle deep	1.8 m

The Mare de Dan Doutchi (also: Mare de Dandoutchi ) is a lake in the municipality of Bagaroua in Niger .

geography

The Mare de Dan Doutchi is located about 48 kilometers southeast of the capital of the rural municipality of Bagaroua, which belongs to the Bagaroua department in the Tahoua region. The village of Dan Doutchi is located on the south-eastern shore of the lake. The landscape around the water body, which is 270 m above sea level, is characterized by the transition from the Sahel zone to the Sahara desert .

The water surface of the Mare de Dan Doutchi is on average 1780 ha . The average water depth is 1.8 m. The main inflow and outflow of the lake is the dry valley Zourourou , which is also known as the valley of Keita and has its origin in the Ader Doutchi plateau . The catchment area of the Mare de Dan Doutchi is part of a system of dry valleys in the Ullemmeden Basin east of the Niger River , to which the Dallol Maouri , Maggia and Tadiss also belong.

Until July 1974 it was a small temporary watering hole in a wooded area. Then, as a result of heavy rainfall upstream on the Zourourou, the dam of the Keita dam broke , the Mare de Dan Doutchi filled with water and remained a permanent lake. With the Mare d'Akadané and the Mare de Tabalak , two other lakes in Niger were created in a similar way in the 1970s.

Settlements

In addition to the village of Dan Doutchi, which had 964 inhabitants in the 2012 census, there are other settlements around the lake: the village of Ambagoura in the northeast, the hamlet of Tchala in the east, the villages of Kabimawa and Dinkim in the southwest, the village of Maraké and the hamlet of Maraké Takadamé to the west and the village of Jiga to the northwest.

ecology

Fish were released early in the Mare de Dan Doutchi. The catfish species include Bagrus bajad , the eel predatory catfish , Synodontis schall and Chrysichthys auratus as well as several schilbe and auchenoglanis species. In addition there are Oreochromis niloticus and Zille cichlid from the family of cichlids , the Nile perch and several Alestes species. The lake is an important wintering place for birds. There are more than 40 species of birds here, including the dark sandpiper , the white stork , the Egyptian goose , the red chalk hawk and the swallowtail pair . About two thirds of the bird species come from the Palearctic and about one third from the Afrotropic .

In the flood zones around the lake, there is a relatively dense vegetation. Cenchrus biflorus and various Aristida species grow here in the grass layer . The larger plants include the gum arabic acacia , the anabree and the desert date . To fortify the banks and dunes, red eucalyptus , prosopis juliflora , gum arabic trees and neem trees were also planted.

The wetland of the Mare de Dan Doutchi is protected under the Ramsar Convention . The 38,250 hectare area was placed under protection on September 16, 2005. Possible hazards include silting up of the lake as a result of erosion and pollution of the water by households and the use of pesticides .

Economical meaning

The main economic activity on the lake is fishing for commercial purposes. The annual yield is estimated at 100 tons. Most of the catch is smoked, fried or dried and exported to neighboring Nigeria . Fresh fish from the Mare de Dan Doutchi is sold in the major cities of Tahoua , Agadez , Maradi and Niamey in Niger.

Water from the lake is used as drinking water, for watering cattle and for irrigation in agriculture. The relatively humid microclimate in the flooded areas favors the cultivation of fruit and vegetables. These include cowpeas , cassava , sorghum , sweet potatoes and onions .

Web links

La Mare de Dan Doutchi. In: Ramsar Sites Information Service. April 13, 2018(English).; accessed on March 13, 2019
Observations for Mare de Dan Doutchi In: West African Bird DataBase (English).

Individual evidence

↑ ^a ^b ^c ^d ^e Seyni Seydou: La mare de Dan Doutchi. Fiche descriptive sur les zones humides Ramsar (FDR). In: Ramsar Sites Information Service. April 10, 2004, pp. 1–2 , accessed on March 13, 2019 (French).
↑ ^a ^b National Repertoire des Localités (ReNaLoc). (RAR; 11.3 MB) Institut National de la Statistique de la République du Niger, July 2014, pp. 324–326 , accessed on August 7, 2015 (French).
↑ ^a ^b ^c Seyni Seydou: La mare de Dan Doutchi. Fiche descriptive sur les zones humides Ramsar (FDR). In: Ramsar Sites Information Service. April 10, 2004, pp. 3–4 , accessed on March 13, 2019 (French).
↑ Joost Brouwer, Hamadou Amadou Abdoul Kader, Thomas Sommerhalter: Wetlands help maintain wetland and dryland biodiversity in the Sahel, but that role is under threat: an example from 80 years of changes at Lake Tabalak in Niger . In: Biodiversity . Vol. 15, No. 2–3 , 2014, pp. 204 ( researchgate.net [accessed March 25, 2019]).
↑ ^a ^b ^c Seyni Seydou: La mare de Dan Doutchi. Fiche descriptive sur les zones humides Ramsar (FDR). In: Ramsar Sites Information Service. April 10, 2004, pp. 5–6 , accessed on March 13, 2019 (French).
↑ La Mare de Dan Doutchi. In: Ramsar Sites Information Service. April 13, 2018, accessed March 13, 2019 .
↑ Seyni Seydou: La mare de Dan Doutchi. Fiche descriptive sur les zones humides Ramsar (FDR). In: Ramsar Sites Information Service. April 10, 2004, p. 7 , accessed on March 13, 2019 (French).

[FDR_2004_1_2-1] Seyni Seydou: La mare de Dan Doutchi. Fiche descriptive sur les zones humides Ramsar (FDR). In: Ramsar Sites Information Service. April 10, 2004, pp. 1–2 , accessed on March 13, 2019 (French).

[ReNaLoc-2] National Repertoire des Localités (ReNaLoc). (RAR; 11.3 MB) Institut National de la Statistique de la République du Niger, July 2014, pp. 324–326 , accessed on August 7, 2015 (French).

[FDR_2004_3_4-3] Seyni Seydou: La mare de Dan Doutchi. Fiche descriptive sur les zones humides Ramsar (FDR). In: Ramsar Sites Information Service. April 10, 2004, pp. 3–4 , accessed on March 13, 2019 (French).

[4] Joost Brouwer, Hamadou Amadou Abdoul Kader, Thomas Sommerhalter: Wetlands help maintain wetland and dryland biodiversity in the Sahel, but that role is under threat: an example from 80 years of changes at Lake Tabalak in Niger . In: Biodiversity . Vol. 15, No. 2–3 , 2014, pp. 204 ( researchgate.net [accessed March 25, 2019]).

[FDR_2004_5_6-5] Seyni Seydou: La mare de Dan Doutchi. Fiche descriptive sur les zones humides Ramsar (FDR). In: Ramsar Sites Information Service. April 10, 2004, pp. 5–6 , accessed on March 13, 2019 (French).

[6] La Mare de Dan Doutchi. In: Ramsar Sites Information Service. April 13, 2018, accessed March 13, 2019 .

[7] Seyni Seydou: La mare de Dan Doutchi. Fiche descriptive sur les zones humides Ramsar (FDR). In: Ramsar Sites Information Service. April 10, 2004, p. 7 , accessed on March 13, 2019 (French).