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and on the island's northern central plateau. Its basin is composed of shallow freshwater lakes and marshes surrounded by areas of dense vegetation. It forms the center of the island's most important rice-growing region. It is a rich habitat for wildlife, including some rare and endangered species,
356:). The Alaotra gentle lemur is now limited to only 220 km (85 sq mi) of remaining reedbeds, and in recent years, its population rapidly declined by 60%, from about 7,500 individuals in 1994 to 3,000 in 2001, mostly from habitat loss, but also from hunting by local villagers.
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of the lake, which is fast disappearing; the lake is now only 60 cm (24 in) deep during the dry season. Pressure to create more rice fields has also led locals to burn the reedbeds surrounding the lake. These reedbeds provide the sole habitat of the
393:). The Madagascar pochard is now critically endangered and no longer found on the lake, although very small numbers exist elsewhere. The Alaotra grebe was declared extinct in 2010. The area of the lake may have been its only habitat.
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The fertile plain surrounding Lake
Alaotra is Madagascar's most important rice-producing region. The hills surrounding the lake were formerly forested but have mostly been cleared for farmland in past decades. Severe
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cover 7,223 square kilometres (2,789 sq mi), and include a range of habitats, including open water, reedbeds, marshes, and
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Madagascar
Pochard is endemic to Madagascar, where it was found historically in the Lake Alaotra basin
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R. Battistini, G. Richard-Vindard (1972). Biogeography and
Ecology in Madagascar, pp. 268–270.
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paddies. The lake itself covers 900 km (350 sq mi). Lake
Alaotra was declared a
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provides the lake with water and also drains it. After 381 km, the river flows into the
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Biodiversity dynamics and conservation: the freshwater fish of tropical Africa
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as well as an important fishing ground. Lake
Alaotra and its surrounding
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377:). Two waterbird species were endemic to northern Madagascar, the
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and an important but increasingly threatened habitat for
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on these vulnerable hill slopes has caused considerable
438:"Le Lac Alaotra: Les Zones Humides et Bassins Versants"
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Le Lac
Alaotra: Les Zones Humides et Bassins Versants
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Project
Alaotra by Madagascar Wildlife Conservation
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359:The lake is the type locality of the butterfly
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496:. Cambridge University Press. p. 322.
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466:"Aythya innotata - Range & Habitat"
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311:wetland of international importance
583:Important Bird Areas of Madagascar
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196:1.5 m (4 ft 11 in)
188:0.60 m (2 ft 0 in)
180:900 km (350 sq mi)
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538:The GRAP-Lake Alaotra project
354:Hapalemur griseus alaotrensis
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369:, including the endangered
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568:Ramsar sites in Madagascar
277:[faˈrihinˈaloʈʂə̥]
212:750 m (2,460 ft)
445:Sites Information Service
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313:under the international
391:Tachybaptus rufolavatus
522:BirdLife International
298:Alaotra-Mangoro Region
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326:Oreochromis macrochir
317:on February 2, 2003.
350:Alaotra gentle lemur
563:Lakes of Madagascar
490:C. Lévêque (1997).
362:Artitropa alaotrana
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573:Toamasina Province
379:Madagascar pochard
246:Reference no.
27:Lake in Madagascar
426:978-94-015-7161-6
315:Ramsar Convention
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209:Surface elevation
16:(Redirected from
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468:. Archived from
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241:9 September 2003
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136:Primary inflows
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532:External links
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18:Le Lac Alaotra
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472:on 2007-09-30
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118:17.5°S 48.5°E
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71:Lake Alaotra
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33:Lake Alaotra
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517:Lake Alaotra
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474:. Retrieved
470:the original
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448:. Retrieved
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402:Indian Ocean
398:Ambato River
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375:Anas melleri
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330:phytophagous
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264:Lake Alaotra
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201:Water volume
177:Surface area
142:Ambato River
286:Lac Alaotra
123:-17.5; 48.5
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96:Coordinates
73:Lac Alaotra
35:Lac Alaotra
578:Rift lakes
557:Categories
476:2006-12-24
408:References
385:) and the
367:waterbirds
294:Madagascar
238:Designated
193:Max. depth
168:Madagascar
89:Madagascar
332:species.
450:25 April
303:wetlands
268:Malagasy
85:Location
347:endemic
338:erosion
109:48°30′E
106:17°30′S
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443:Ramsar
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282:French
163:Basin
498:ISBN
452:2018
422:ISBN
396:The
320:The
307:rice
290:lake
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
