Tussock grass

Last updated

Tussock grasses or bunch grasses are a group of grass species in the family Poaceae. They usually grow as singular plants in clumps, tufts, hummocks, or bunches, rather than forming a sod or lawn, in meadows, grasslands, and prairies. As perennial plants, most species live more than one season. Tussock grasses are often found as forage in pastures and ornamental grasses in gardens. [1] [2] [3]

Contents

Many species have long roots that may reach 2 meters (6.6 ft) or more into the soil, which can aid slope stabilization, erosion control, and soil porosity for precipitation absorption. Also, their roots can reach moisture more deeply than other grasses and annual plants during seasonal or climatic droughts. The plants provide habitat and food for insects (including Lepidoptera), birds, small animals and larger herbivores, and support beneficial soil mycorrhiza. The leaves supply material, such as for basket weaving, for indigenous peoples and contemporary artists.

Tussock and bunch grasses occur in almost any habitat where other grasses are found, including: grasslands, savannas and prairies, wetlands and estuaries, riparian zones, shrublands and scrublands, woodlands and forests, montane and alpine zones, tundra and dunes, and deserts.

Tussock-bunch grasslands, dormant season, in the Falkland Islands in the south Atlantic East-Falkland.jpg
Tussock-bunch grasslands, dormant season, in the Falkland Islands in the south Atlantic
Bunch-tussock grasses in the Konza tallgrass prairie Konza1.jpg
Bunch-tussock grasses in the Konza tallgrass prairie

Fire resistance

In western North American wildfires, bunch grasses tend to smolder and not ignite into flames, unlike invasive species of annual grasses that contribute to a fire's spreading. [4]

Genera

Examples:

Species

Australia

Larvae of the Geitoneura klugii feed on grasses like slender tussock grass, kangaroo grass, and false brome. Geitoneura klugii3.jpg
Larvae of the Geitoneura klugii feed on grasses like slender tussock grass, kangaroo grass, and false brome.

New Zealand

North America

Bunch grasses: [5]

South America

Tussock and various types of flora near Keetmanshoop in Namibia Flora near Keetmanshoop, Namibia.jpg
Tussock and various types of flora near Keetmanshoop in Namibia

Africa

Europe

See also

Non-Poaceae tussocks

Related Research Articles

<i>Arundo</i> Genus of grasses

Arundo is a genus of stout, perennial plants in the grass family.

<span class="mw-page-title-main">Ornamental grass</span> Grass grown as an ornamental plant

Ornamental grasses are grasses grown as ornamental plants. Ornamental grasses are popular in many colder hardiness zones for their resilience to cold temperatures and aesthetic value throughout fall and winter seasons.

<i>Cynodon</i> Genus of flowering plants in the grass family Poaceae

Cynodon is a genus of plants in the grass family. It is native to warm temperate to tropical regions of the Old World, as well as being cultivated and naturalized in the New World and on many oceanic islands.

<i>Festuca</i> Genus in the grass family Poaceae

Festuca (fescue) is a genus of flowering plants belonging to the grass family Poaceae. They are evergreen or herbaceous perennial tufted grasses with a height range of 10–200 cm (4–79 in) and a cosmopolitan distribution, occurring on every continent except Antarctica. The genus is closely related to ryegrass (Lolium), and recent evidence from phylogenetic studies using DNA sequencing of plant mitochondrial DNA shows that the genus lacks monophyly. As a result, plant taxonomists have moved several species, including the forage grasses tall fescue and meadow fescue, from the genus Festuca into the genus Lolium, or alternatively into the segregate genus Schedonorus.

<span class="mw-page-title-main">California coastal prairie</span> Plant community in California

California coastal prairie, also known as northern coastal grassland, is a grassland plant community of California and Oregon in the temperate grasslands, savannas, and shrublands biome. This ecosystem is found along the Pacific Coast, from as far south as Los Angeles in Southern California to southern Oregon. It typically stretches as far inland as 100 km, and occurs at altitudes of 350 m or lower.

<i>Festuca idahoensis</i> Species of flowering plant

Festuca idahoensis is a species of grass known by the common names Idaho fescue and blue bunchgrass. It is native to western North America, where it is widespread and common. It can be found in many ecosystems, from shady forests to open plains grasslands.

Tussock grassland is a form of open grassland that is dominated by tussock grasses. It is common in some temperate grasslands, savannas, and shrublands ecoregions of the Southern Hemisphere. Tussock grasslands are usually typified by low rainfall and poor soils in which few plants other than hardy tussock grasses can flourish. They are predominantly populated by tufted grasses of the genera Agrostis, Andropogon, Chionochloa, Deschampsia, Festuca, Koeleria, Pentameris and Poa. The grasslands are found in New Zealand, Australia, Argentina, temperate areas of southern and eastern Africa, and some subantarctic islands.

<span class="mw-page-title-main">Blue Oak Ranch Reserve</span> Part of the University of California Natural Reserve System

The Blue Oak Ranch Reserve, a unit of the University of California Natural Reserve System, is an ecological reserve and biological field station in Santa Clara County, California. It is located on 3,260 acres (13.2 km2) in the Diablo Range, northwest of Mount Hamilton, at 1,500 ft (460 m) elevation.

<span class="mw-page-title-main">Zacatonal</span> Montane grasslands and shrublands ecoregion of central Mexico

The Zacatonal is a montane grassland and shrubland ecoregion of central Mexico.

<i>Elachista adscitella</i> Species of moth

Elachista adscitella is a moth of the family Elachistidae found in Europe.

<span class="mw-page-title-main">Central American montane forests</span> Ecoregion in Central America

The Central American montane forests are an ecoregion of the tropical and subtropical moist broadleaf forests biome, as defined by the World Wildlife Fund, located in mountains of Central America.

The Queanbeyan Nature Reserve is a protected nature reserve that is located in the Southern Tablelands region of New South Wales, in eastern Australia. The 67-hectare (170-acre) reserve is situated approximately 4 kilometres (2.5 mi) west-south-west of the City of Queanbeyan.

<span class="mw-page-title-main">Southern Tablelands Temperate Grassland</span> Ecological community in New South Wales

The Southern Tablelands Temperate Grassland, formally Natural Temperate Grassland of the Southern Tablelands, is a temperate grassland community situated in the Southern Tablelands and Monaro region of New South Wales, extending into the Australian Capital Territory and the Victorian border. Listed as Endangered under the Environment Protection and Biodiversity Conservation Act 1999, the grassland is dominated by reasonably tall, dense to open tussock grasses.

References

  1. R.H. Groves, R.D.B. Whalley "Grass and Grassland Ecology in Australia" in Flora of Australia Volume 43 Poaceae 1: Introduction and Atlas, CSIRO Publishing, Canberra. "Tussock" grass implies a vertical orientation of the grass clump. In North American usage "Bunch grass" is more specific and defines a clumping, non-rhizomatous or non-stoloniferous growth form, vertical to splayed, and usually perennial with a deeper rooting system than other Poacea.
  2. Crampton, Beecher. "Grasses in California. University of California Press. Berkeley. 1974. ISBN   0-520-02507-5. p. 7 Walker, T.W. 1955 "The Ecology of Tussock Grasslands: Discussion" Proc. NZ Ecol. Soc 3:7 "One fifth of New Zealand carries tussock or bunch grass vegetation, more than other steppes, prairies, or grasslands of the world"
  3. Walker, T.W. 1955 "The Ecology of Tussock Grasslands: Discussion" Proc. NZ Ecol. Soc 3:7 "One fifth of New Zealand carries tussock or bunch grass vegetation, more than other steppes, prairies, or grasslands of the world"
  4. Ellsworth and Kauffman, 2010, Native Bunchgrasses Response to Prescribed fire in Ungrazed Grasslands
  5. "California Native Grasslands Association; access date: 6/9/2010". Cnga.org. 2012-07-20. Archived from the original on 2012-03-08. Retrieved 2012-12-23.