The Guadalquivir Marshes (in or simply ''Las Marismas'') are a

natural region A natural region (landscape unit) is a basic geographic unit. Usually, it is a region which is distinguished by its common natural features of geography, geology, and climate. From the ecological point of view, the naturally occurring flora and ...

of marshy lowlands on the lower Guadalquivir River. The ''Las Marismas'' zone forms a large part of the

province of Huelva Huelva () is a province of southern Spain, in the western part of the autonomous community of Andalusia. It is bordered by Portugal, the provinces of Badajoz, Seville, and Cádiz, and the Atlantic Ocean. Its capital is Huelva. Its area is ...

province of Seville The Province of Seville () is a province of southern Spain, in the western part of the autonomous community of Andalusia. It borders the provinces of Málaga and Cádiz in the south, Huelva in the west, Badajoz in the north and Córdoba in the ...

and

province of Cádiz Cádiz is a Provinces of Spain, province of southern Spain, in the southwestern part of the Autonomous communities of Spain, autonomous community of Andalusia. It is the southernmost part of mainland Spain, as well as the southernmost part of ...

in Andalucia,

Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...

. The area includes parts of the municipalities of Isla Mayor, Los Palacios y Villafranca,

La Puebla del Río La Puebla del Río is a city located in the province of Seville, Spain. According to the 2016 census ( INE), the city has a population of 11995 inhabitants. With a surface of 377,1 square km and located 15 km away SW from Seville (Sevilla)La ...

, Utrera, Las Cabezas de San Juan and Lebrija and Sanlúcar de Barrameda. Rice farming in this area produces 40% of Spain's national crop. Some areas are protected for wildlife and habitat, including dunes.

History

Approximately two

millennia A millennium () is a period of one thousand years, one hundred decades, or ten centuries, sometimes called a kiloannum (ka), or kiloyear (ky). Normally, the word is used specifically for periods of a thousand years that begin at the starting p ...

ago the

wetland A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially ...

s comprised a large

lagoon A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') an ...

and

estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime enviro ...

, known as in Latin, leading to the

Guadalquivir The Guadalquivir (, also , , ) is the fifth-longest river in the Iberian Peninsula and the second-longest river with its entire length in Spain. The Guadalquivir is the only major navigable river in Spain. Currently it is navigable from Seville ...

River mouth A river mouth is where a river flows into a larger body of water, such as another river, a lake/reservoir, a bay/gulf, a sea, or an ocean. At the river mouth, sediments are often deposited due to the slowing of the current, reducing the carryin ...

with some sand bars to the South. Over time the

lake A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from ...

silted up, gradually transforming into

marsh In ecology, a marsh is a wetland that is dominated by herbaceous plants rather than by woody plants.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p More in genera ...

land. This silt has formed into a barrier of dunes extending approximately along the coast, known as ''Arenas Gordas'' (English: "the fat sands"). The marquessate de las Marismas del Guadalquivir is a Spanish noble title named after the area; this

noble title Traditional rank amongst European imperiality, royalty, peers, and nobility is rooted in Late Antiquity and the Middle Ages. Although they vary over time and among geographic regions (for example, one region's prince might be equal to anoth ...

was created by

Royal Decree A decree is a legal proclamation, usually issued by a head of state, judge, royal figure, or other relevant authorities, according to certain procedures. These procedures are usually defined by the constitution, Legislative laws, or customary l ...

of King Ferdinand VII in 1829 for Alejandro María Aguado y Ramírez de Estenoz. In the early 21st century, the Guadalquivir wetland region's main economic activity is

agriculture Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created ...

, specialising in the cultivation of

rice Rice is a cereal grain and in its Domestication, domesticated form is the staple food of over half of the world's population, particularly in Asia and Africa. Rice is the seed of the grass species ''Oryza sativa'' (Asian rice)—or, much l ...

. An area of about 400 km² is devoted to rice farming. It has an annual output of about 310,000 metric tonnes, equating to approximately 40% of Spain's rice production.

Protected area

The wetland zone acts as a

buffer zone A buffer zone, also historically known as a march, is a neutral area that lies between two or more bodies of land; usually, between countries. Depending on the type of buffer zone, it may serve to separate regions or conjoin them. Common types o ...

between the human settlements of the

region and Doñana National Park, a

protected area Protected areas or conservation areas are locations which receive protection because of their recognized natural or cultural values. Protected areas are those areas in which human presence or the exploitation of natural resources (e.g. firewood ...

land,

stream A stream is a continuous body of water, body of surface water Current (stream), flowing within the stream bed, bed and bank (geography), banks of a channel (geography), channel. Depending on its location or certain characteristics, a strea ...

s, and

sand dune A dune is a landform composed of wind- or water-driven sand. It typically takes the form of a mound, ridge, or hill. An area with dunes is called a dune system or a dune complex. A large dune complex is called a dune field, while broad, flat ...

s. The National Park was established in 1969 as a

nature reserve A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, funga, or features of geologic ...

when the

World Wildlife Fund The World Wide Fund for Nature (WWF) is a Swiss-based international non-governmental organization founded in 1961 that works in the field of wilderness preservation and the reduction of human impact on the environment. It was formerly named the ...

joined forces with the

Spanish Government The government of Spain () is the central government which leads the executive branch and the General State Administration of the Kingdom of Spain. The Government consists of the Prime Minister and the Ministers; the prime minister has the o ...

to purchase a substantial part of the local wetlands in order to preserve them.

Fauna

The Las Marismas area is home to a large number of wildlife species. Commonly seen terrestrial animals include

deer A deer (: deer) or true deer is a hoofed ruminant ungulate of the family Cervidae (informally the deer family). Cervidae is divided into subfamilies Cervinae (which includes, among others, muntjac, elk (wapiti), red deer, and fallow deer) ...

lynx A lynx ( ; : lynx or lynxes) is any of the four wikt:extant, extant species (the Canada lynx, Iberian lynx, Eurasian lynx and the bobcat) within the medium-sized wild Felidae, cat genus ''Lynx''. The name originated in Middle Engl ...

, and wild boars. Notable avian species include vultures, flamingos, herons, spoonbills, and

ducks Duck is the common name for numerous species of waterfowl in the family (biology), family Anatidae. Ducks are generally smaller and shorter-necked than swans and goose, geese, which are members of the same family. Divided among several subfam ...

. The rare Spanish imperial eagle lives here, whose population is considered vulnerable by the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the stat ...

References

External links

Coto de Doñana

Sanlúcar Central Bureau for Tourism
Former bays Marshes Landforms of Andalusia Natural regions of Spain Wetlands of Spain {{Andalusia-geo-stub

History

Protected area

Fauna

See also

References

External links