Marismas Nacionales–San Blas mangroves is a

mangrove A mangrove is a shrub or tree that grows in coastal saline or brackish water. The term is also used for tropical coastal vegetation consisting of such species. Mangroves are taxonomically diverse, as a result of convergent evolution in severa ...

ecoregion of the

Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contine ...

coast of

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

. The ' ("national

marsh A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found a ...

es") stretches from Mazatlán, Sinaloa southwards to

San Blas, Nayarit San Blas is both a municipality and municipal seat located on the Pacific coast of Mexico in Nayarit. City San Blas is a port and popular tourist destination, located about north of Puerto Vallarta, and west of the state capital Tepic, and thr ...

Geography

The Marismas Nacionales–San Blas mangroves occupy an area of in coastal

Nayarit Nayarit (), officially the Free and Sovereign State of Nayarit ( es, Estado Libre y Soberano de Nayarit), is one of the 31 states that, along with Mexico City, comprise the Federal Entities of Mexico. It is divided in 20 municipalities and its ...

and Sinaloa states. The Marismas Nacionales is an interconnected complex of lagoons and wetlands on the alluvial plain formed by the

Acaponeta Acaponeta is both a municipality and a town in the northern part of the Mexican state of Nayarit. The town is located at the geographical coordinates of . The population of the municipality was 34,665 in the 2005 census, living in a total area of ...

, San Pedro Mezquital, and Grande de Santiago rivers. Beach ridges separate the wetlands from the sea. The central

Agua Brava Lagoon Agua means water in Spanish. Agua may also refer to: Places * ''Agua de Dios'' (God's water), a municipality in Colombia * Volcán de Agua, a stratovolcano located in Guatemala Arts, entertainment, and media * ''Agua'' (film), a 2006 Argentin ...

and northern Teacapán Lagoon are the principal lagoons. The San Blas mangroves are the southernmost in the complex, located south of the Grande de Santiago river mouth. Other mangrove areas north of the Marismas Nacionales complex include the Presidio River delta, the Baluarte River delta, and the Urías estuary south of Mazatlan.

Flora

Red mangrove (''

Rhizophora mangle ''Rhizophora mangle'', the red mangrove, is distributed in estuarine ecosystems throughout the tropics. Its viviparous "seeds", in actuality called propagules, become fully mature plants before dropping off the parent tree. These are disperse ...

''), black mangrove (''

Avicennia germinans ''Avicennia germinans'', the black mangrove, is a shrub or small tree growing up to 12 meters (39 feet) in the acanthus family, Acanthaceae. It grows in tropical and subtropical regions of the Americas, on both the Atlantic and Pacific Coasts, ...

''), white mangrove (''

Laguncularia racemosa ''Laguncularia racemosa'', the white mangrove, is a species of flowering plant in the leadwood tree family, Combretaceae. It is native to the coasts of western Africa from Senegal to Cameroon, the Atlantic Coast of the Americas from Bermuda an ...

''), and button mangrove (''

Conocarpus erectus ''Conocarpus erectus'', commonly called buttonwood or button mangrove, is a mangrove shrub in the family Combretaceae. This species grows on shorelines in tropical and subtropical regions around the world. Range Locations it is known from inc ...

'') are found in the ecoregion. Black mangrove is predominant near Teacapán in the northern part of the ecoregion, and white mangrove is predominant near Agua Brava in the southern part of the ecoregion. Trees that grow in association with the mangroves include ciruelillo ('' Phyllanthus elsiae''), zapotón (''

Pachira aquatica ''Pachira aquatica'' is a tropical wetland tree in the mallow family Malvaceae, native to Central and South America where it grows in swamps. It is known by its common names Malabar chestnut, French peanut, Guiana chestnut, Provision tree, Saba n ...

''), and anona ('' Annona glabra'').

Fauna

The mangroves are home to over 250 species of birds, and serve as an important winter habitat for migratory birds. The Marismas Nacionales Biosphere Reserve also support an important number of mammal species, like deer, jaguar, ocelot and lynx.

Conservation and threats

Since 2009, Fonatur (), the Mexican tourism investment office, is planning a large tourism development adjacent to Marismas Nacionales that will include over 43,000 hotel and vacation home rooms, at least three golf courses, two marinas, commercial centers, and general urbanization. The direct and indirect impacts of this development, including the city that will be created nearby to house the workers servicing the tourism lodging and attractions, pose a substantial threat to the conservation of the Marismas Nacionales-San Blas Mangroves.

References

External links

* *
Continentally Important Proposal for the Marismas Nacionales
North American Bird Conservation Initiative {{DEFAULTSORT:Marismas Nacionales-San Blas Mangroves Mangrove ecoregions Ecoregions of Mexico * * Geography of Nayarit Geography of Sinaloa Wetlands of Mexico Ramsar sites in Mexico Neotropical ecoregions Tropical Eastern Pacific Protected areas of Sinaloa Protected areas of Nayarit Important Bird Areas of Mexico