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definitions - grassland

grassland (n.)

1.land where grass or grasslike vegetation grows and is the dominant form of plant life

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definition of Wikipedia

synonyms - grassland

grassland (n.)

farm, garden, meadow, pasturage, pasture, prairie, ranch, savanna, sod, steppe, lea  ((Dep)poétique), mead  ((Dep)poétique)

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-Angolan montane forest-grassland mosaic • British NVC community CG1 (Festuca ovina – Carlina vulgaris grassland) • British NVC community CG10 (Festuca ovina - Agrostis capillaris - Thymus praecox grassland) • British NVC community CG3 (Bromus erectus grassland) • British NVC community MG3 (Anthoxanthum odoratum - Geranium sylvaticum grassland) • British NVC community MG4 (Alopecurus pratensis - Sanguisorba officinalis grassland) • British NVC community MG5 (Cynosurus cristatus - Centaurea nigra grassland) • British NVC community MG6 (Lolium perenne - Cynosurus cristatus grassland) • British NVC community MG8 (Cynosurus cristatus - Caltha palustris grassland) • British NVC community MG9 (Holcus lanatus - Deschampsia cespitosa grassland) • Buffalo Gap National Grassland • Butte Valley National Grassland • Caddo National Grassland • Calcareous grassland • Cedar River National Grassland • Cimarron National Grassland • Comanche National Grassland • Crooked River National Grassland • Curlew National Grassland • Desert Grassland Whiptail • Desert Grassland Whiptail Lizard • Flooded grassland • Fort Pierre National Grassland • Grand River National Grassland • Grassland (Annapolis Junction, Maryland) • Grassland (disambiguation) • Grassland Melomys • Grassland Sparrow • Grassland Yellow-finch • Grassland, Alberta • Grassland, Texas • Institute of Grassland and Environmental Research • Kiowa National Grassland • Little Missouri National Grassland • Lowland semi-natural grassland • Lyndon B. Johnson National Grassland • Manchurian-Mongolian grassland • McClellan Creek National Grassland • Mongolian grassland • Mongolian-Manchurian grassland • Montane grassland and shrubland • Northern coastal grassland • Oglala National Grassland • Pampa grassland • Pawnee National Grassland • Puna grassland • Rita Blanca National Grassland • Sheyenne National Grassland • South Malawi montane forest-grassland mosaic • Subtropical grassland • Thunder Basin National Grassland • Tropical grassland • Tussock grassland • U.S. National Grassland • United States National Grassland

analogical dictionary



  A grassland in the Antelope Valley, California
  The Konza tallgrass prairie in the Flint Hills of northeastern Kansas
  A grassland in rare green summer (San Ildefonso, Bulacan).

Grasslands are areas where the vegetation is dominated by grasses (Poaceae) and other herbaceous (non-woody) plants (forbs). However, sedge (Cyperaceae) and rush (Juncaceae) families can also be found. Grasslands occur naturally on all continents except Antarctica. In temperate latitudes, such as northwestern Europe and the Great Plains and California in North America, native grasslands are dominated by perennial bunch grass species, whereas in warmer climates annual species form a greater component of the vegetation.[1]

Grasslands are found in most ecoregions of the Earth. For example there are five terrestrial ecoregion classifications (subdivisions) of the temperate grasslands, savannas, and shrublands biome ('ecosystem'), which is one of eight terrestrial ecozones of the Earth's surface.



Grassland vegetation can vary in height from very short, as in chalk where the vegetation may be less than 30 cm (12 in) high, to quite tall, as in the case of North American tallgrass prairie, South American grasslands and African savanna.

Woody plants, shrubs or trees, may occur on some grasslands – forming savannas, scrubby grassland or semi-wooded grassland, such as the African savannas or the Iberian dehesa. Such grasslands are sometimes referred to as wood-pasture or woodland.[2]

As flowering plants, grasses grow in great concentrations in climates where annual rainfall ranges between 500 and 900 mm (20 and 35 in).[1] The root systems of perennial grasses and forbs form complex mats that hold the soil in place.


The appearance of mountains in the western United States during the Miocene and Pliocene epochs, a period of some 25 million years, created a continental climate favorable to the evolution of grasslands. Existing forest biomes declined, and grasslands became much more widespread. Following the Pleistocene Ice Ages, grasslands expanded in range in the hotter, drier climates, and began to become the dominant land feature worldwide.[2]


Natural grasslands primarily occur in regions that receive between 250 and 900 mm (9.8 and 35 in) of rain per year, as compared with deserts, which receive less than 250 mm (9.8 in) and tropical rainforests, which receive more than 2,000 mm (79 in).[2] Anthropogenic grasslands often occur in much higher rainfall zones, as high as 200 cm (79 in) annual rainfall. Grassland can exist naturally in areas with higher rainfall when other factors prevent the growth of forests, such as in serpentine barrens, where minerals in the soil inhibit most plants from growing.

Average daily temperatures range between −20 and 30 °C.[3] Temperate grasslands have warm summers and cold winters with rain or some snow.

  Biodiversity and conservation

Grasslands dominated by unsown wild-plant communities ("unimproved grasslands") can be called either natural or 'semi-natural' habitats. The majority of grasslands in temperate climates are 'semi-natural'. Although their plant communities are natural, their maintenance depends upon anthropogenic activities such as low-intensity farming, which maintains these grasslands through grazing and cutting regimes. These grasslands contain many species of wild plants – grasses, sedges, rushes and herbs – 25 or more speerican prairie grasslands or lowland wildflower meadows in the UK are now rare and their associated wild flora equally threatened. Associated with the wild-plant diversity of the "unimproved" grasslands is usually a rich invertebrate fauna; also there are many species of birds that are grassland "specialists", such as the snipe and the Great Bustard. Agriculturally improved grasslands, which dominate modern intensive agricultural landscapes, are usually poor in wild plant species due to the original diversity of plants having been destroyed by cultivation, the original wild-plant communities having been replaced by sown monocultures of cultivated varieties of grasses and clovers, such as Perennial ryegrass and White Clover. In many parts of the world "unimproved" grasslands are one of the least threatened habitats, and a target for acquisition by wildlife conservation groups or for special grants to landowners who are encouraged to manage them appropriately.

  Human impact and economic importance

  Grassland in Cantabria, northern Spain.
  A restored grassland ecosystem at Morton Arboretum in Illinois.

Grasslands are of vital importance for raising livestock for human consumption and for milk and other dairy products.

Grassland vegetation remains dominant in a particular area usually due to grazing, cutting, or natural or manmade fires, all discouraging colonisation by and survival of tree and shrub seedlings. Some of the world's largest expanses of grassland are found in African savanna, and these are maintained by wild herbivores as well as by nomadic pastoralists and their cattle, sheep or goats.

Grasslands may occur naturally or as the result of human activity. Grasslands created and maintained by human activity are called anthropogenic grasslands. Hunting peoples around the world often set regular fires to maintain and extend grasslands, and prevent fire-intolerant trees and shrubs from taking hold. The tallgrass prairies in the US Midwest may have been extended eastward into Illinois, Indiana, and Ohio by human agency. Much grassland in northwest Europe developed after the Neolithic Period, when people gradually cleared the forest to create areas for raising their livestock.

  Grassland types ( biomes )

  Tropical and subtropical grasslands

These grasslands are classified with tropical and subtropical savannas and shrublands as the tropical and subtropical grasslands, savannas, and shrublands biome. Notable tropical and subtropical grasslands include the Llanos grasslands of northern South America.

  Temperate grasslands

Mid-latitude grasslands, including the Prairie and Pacific Grasslands of North America, the Pampas of Argentina, Brazil and Uruguay, calcareous downland, and the steppes of Europe. They are classified with temperate savannas and shrublands as the temperate grasslands, savannas, and shrublands biome. Temperate grasslands are the home to many large herbivores, such as bison, gazelles, zebras, rhinoceroses, and wild horses. Carnivores like lions, wolves and cheetahs and leopards are also found in temperate grasslands. Other animals of this region include: deer, prairie dogs, mice, jack rabbits, skunks, coyotes, snakes, fox, owls, badgers, blackbirds (both Old and New World varieties), grasshoppers, meadowlarks, sparrows, quails, hawks and hyenas.

  Negri-Nepote Temperate Grasslands in New Jersey

  Flooded grasslands

Grasslands that are flooded seasonally or year-round, like the Everglades of Florida, the Pantanal of Brazil, Bolivia and Paraguay or the Esteros del Ibera in Argentina.They are classified with flooded savannas as the flooded grasslands and savannas biome and occur mostly in the tropics and subtropics.

Watermeadows are grasslands that are deliberately flooded for short periods.

  Montane grasslands

High-altitude grasslands located on high mountain ranges around the world, like the Páramo of the Andes Mountains. They are part of the montane grasslands and shrublands biome and also constitute tundra.

  Tundra grasslands

Similar to montane grasslands, polar arctic tundra can have grasses, but high soil moisture means that few tundras are grass-dominated today. However, during the Pleistocene ice ages, a polar grassland known as steppe-tundra occupied large areas of the Northern hemisphere. These are in the tundra biome.

  Desert and xeric grasslands

Also called desert grasslands, this is composed of sparse grassland ecoregions located in the deserts and xeric shrublands biome.


Mites, insect larvae, nematodes and earthworms inhabit deep soil, which can reach 6 metres (20 ft) underground in undisturbed grasslands on the richest soils of the world. These invertebrates, along with symbiotic fungi, extend the root systems, break apart hard soil, enrich it with urea and other natural fertilizers, trap minerals and water and promote growth.[4] Some types of fungi make the plants more resistant to insect and microbial attacks.

Grassland in all its form supports a vast variety of mammals, reptiles, birds, and insects. Typical large mammals include the Blue Wildebeest, American Bison, Giant Anteater and Przewalski's Horse.

While grasslands in general support diverse wildlife, given the lack of hiding places for predators, the African savanna regions support a much greater diversity in wildlife than do temperate grasslands.[5]

There is evidence for grassland being much the product of animal behaviour and movement;[6] some examples include migratory herds of antelope trampling vegetation and African Bush Elephants eating Acacia saplings before the plant has a chance to grow into a mature tree.

  See also


  1. ^ a b NASA Earth Observatory webpage. Earthobservatory.nasa.gov. Retrieved on 2011-12-01.
  2. ^ a b c University of California Museum of Paleontology Grasslands website. Ucmp.berkeley.edu. Retrieved on 2011-12-01.
  3. ^ EO Experiments: Grassland Biome. Earthobservatory.nasa.gov. Retrieved on 2011-12-01.
  4. ^ Chadwick 1995
  5. ^ University of California- Santa Barbara Temperate Grasslands website. Kids.nceas.ucsb.edu. Retrieved on 2011-12-01.
  6. ^ How can grazing heal land?. ManagingWholes.com. Retrieved on 2011-12-01.

  Temperate grasslands, savannas, and shrublands ecoregions

Al Hajar Al Gharbi montane woodlands Oman
Amsterdam and Saint-Paul Islands temperate grasslands Amsterdam Island, Saint-Paul Island
Tristan da Cunha-Gough Islands shrub and grasslands Tristan da Cunha, Gough Island
Canterbury-Otago tussock grasslands New Zealand
Eastern Australia mulga shrublands Australia
Southeast Australia temperate savanna Australia
California Central Valley grasslands United States
Canadian aspen forests and parklands Canada, United States
Central and Southern mixed grasslands United States
Central forest-grasslands transition United States
Central tall grasslands United States
Columbia Plateau United States
Edwards Plateau savanna United States
Flint Hills tall grasslands United States
Montana valley and foothill grasslands United States
Nebraska Sand Hills mixed grasslands United States
Northern mixed grasslands Canada, United States
Northern short grasslands Canada, United States
Northern tall grasslands Canada, United States
Palouse grasslands United States
Texas blackland prairies United States
Western short grasslands United States
Argentine Espinal Argentina
Argentine Monte Argentina
Humid Pampas Argentina
Patagonian grasslands Argentina, Chile
Patagonian steppe Argentina, Chile
Semi-arid Pampas Argentina
Alai-Western Tian Shan steppe Kazakhstan, Tajikistan, Uzbekistan
Altai steppe and semi-desert Kazakhstan
Central Anatolian steppe Turkey
Daurian forest steppe China, Mongolia, Russia
Eastern Anatolian montane steppe Armenia, Iran, Turkey
Emin Valley steppe China, Kazakhstan
Faroe Islands boreal grasslands Faroe Islands, Denmark
Gissaro-Alai open woodlands Kyrgyzstan, Tajikistan, Uzbekistan
Kazakh forest steppe Kazakhstan, Russia
Kazakh steppe Kazakhstan, Russia
Kazakh upland Kazakhstan
Middle East steppe Iraq, Syria
Mongolian-Manchurian grassland China, Mongolia, Russia
Pontic steppe Kazakhstan, Moldova, Romania, Russia, Ukraine
Sayan Intermontane steppe Russia
Selenge-Orkhon forest steppe Mongolia, Russia
South Siberian forest steppe Russia
Tian Shan foothill arid steppe China, Kazakhstan, Kyrgyzstan

  Tropical and subtropical grasslands, savannas, and shrublands ecoregions

Angolan Miombo woodlands Angola
Angolan Mopane woodlands Angola, Namibia
Ascension scrub and grasslands Ascension Island
Central Zambezian Miombo woodlands Angola, Burundi, Democratic Republic of the Congo, Malawi, Tanzania, Zambia
East Sudanian savanna Cameroon, Central African Republic, Chad, Democratic Republic of the Congo, Eritrea, Ethiopia South Sudan, Sudan, Uganda
Eastern Miombo woodlands Mozambique, Tanzania
Guinean forest-savanna mosaic Benin, Burkina Faso, Cameroon, Gambia, Ghana, Guinea, Guinea Bissau, Côte d'Ivoire, Nigeria, Senegal, Togo
Itigi-Sumbu thicket Tanzania, Zambia
Kalahari Acacia-Baikiaea woodlands Botswana, Namibia, South Africa, Zimbabwe
Mandara Plateau mosaic Cameroon, Nigeria
Northern Acacia-Commiphora bushlands and thickets Ethiopia, Kenya, South Sudan, Uganda
Northern Congolian forest-savanna mosaic Cameroon, Central African Republic, Democratic Republic of the Congo, South Sudan, Uganda
Sahelian Acacia savanna Burkina Faso, Cameroon, Chad, Eritrea, Ethiopia, Mali, Mauritania, Niger, Nigeria, Senegal, South Sudan, Sudan
Serengeti Kenya, Tanzania
Somali Acacia-Commiphora bushlands and thickets Eritrea, Ethiopia, Kenya, Somalia
Southern Acacia-Commiphora bushlands and thickets Kenya, Tanzania
Southern Africa bushveld Botswana, South Africa, Zimbabwe
Southern Congolian forest-savanna mosaic Angola, Democratic Republic of the Congo
Southern Miombo woodlands Malawi, Mozambique, Zambia, Zimbabwe
Saint Helena scrub and woodlands Saint Helena
Victoria Basin forest-savanna mosaic Burundi, Ethiopia, Kenya, Rwanda, South Sudan, Tanzania, Uganda
West Sudanian savanna Benin, Burkina Faso, Gambia, Ghana, Guinea, Côte d'Ivoire, Niger, Nigeria, Senegal
Western Congolian forest-savanna mosaic Angola, Democratic Republic of the Congo, Republic of the Congo
Western Zambezian grasslands Angola, Zambia
Zambezian and Mopane woodlands Botswana, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zambia, Zimbabwe
Zambezian Baikiaea woodlands Angola, Botswana, Namibia, Zambia, Zimbabwe
Arnhem Land tropical savanna Australia
Brigalow tropical savanna Australia
Cape York tropical savanna Australia
Carpentaria tropical savanna Australia
Einasleigh upland savanna Australia
Kimberly tropical savanna Australia
Mitchell grass downs Australia
Trans Fly savanna and grasslands Indonesia, Papua New Guinea
Victoria Plains tropical savanna Australia
Terai-Duar savanna and grasslands Bhutan, India, Nepal
Pre-Columbian savannas of North America (greatly declined) Canada, United States
Eastern savannas of the United States (greatly declined) United States
Central Hardwood Region (greatly declined) United States
Western Gulf coastal grasslands Mexico, United States
Beni savanna Bolivia
Campos Rupestres montane savanna Brazil
Cerrado Bolivia, Brazil, Paraguay
Clipperton Island shrub and grasslands Clipperton Island is an overseas territory of France
Córdoba montane savanna Argentina
Guyanan savanna Brazil, Guyana, Venezuela
Gran Chaco Argentina, Brazil, Paraguay
Los Llanos Venezuela, Colombia
Uruguayan savanna Argentina, Brazil, Uruguay
Hawaiian tropical high shrublands Hawaiʻi
Hawaiian tropical low shrublands Hawaiʻi
Northwestern Hawaii scrub Hawaiʻi


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