dcsimg
Image of European beachgrass
Creatures » » Plants » » Angiosperms » » True Grasses »

European Beachgrass

Ammophila arenaria (L.) Link

Brief Summary

provided by Ecomare
Marram grass is by far the most characteristic plant in the Dutch dunes. It is an important dune builder and coastguard. This tall, strong gray-green grass grows in tussocks along the entire Dutch dune coast. It makes long vertical root stocks which push deep down into the ground. The vertical root stocks also multiple horizontally, forming sturdy clumps underground and tussocks above ground. Marram grass has been planted on a large-scale specifically for building and stabilizing the dunes.
license
cc-by-nc
copyright
Copyright Ecomare
provider
Ecomare
original
visit source
partner site
Ecomare

Brief Summary

provided by EOL authors
European beachgrass, also known as Marram and Marram grass (Ammophila arenaria) is a coarse perennial coastal grass in the Poaceae family. Native to coastal areas in Northern Africa; the Arabian Peninsula, Cyprus, Israel, Lebanon and Turkey; and Northern, Middle, East, Southeastern and Southwestern Europe, it plays an important role in dune formation and erosion prevention. As an invasive, introduced species in North America, it is threatening coastal sand dunes in the eastern and western United States, where it is displacing native dune species (such as the American beachgrass Ammophila breviligulata) and significantly altering the structure of the dune systems it invades. Control of this invasive species can only be achieved at this time through ongoing manual removal. It can also extend inland for several miles. It has also been naturalized in Australia and Hawaii.

Comprehensive Description

provided by North American Flora
Ammophila arenaria (L.) Link, Hort. Berol. 1: 105. 1827
Arundo arenaria L. Sp. PI. 82. 1753.
Calamagrostis arenaria Roth, Fl. Germ. 1: 34. 1788. (Based on Arundo arenaria L.)
Ammophila arundinacea Host, Gram. Austr. 4: 24. 1809. (Based on Arundo arenaria L.)
Psamma IMoralis Beauv. Agrost. 144. 176. 1812._
Psamma arenaria R. & S. Syst. Veg. 2: 845. 1817. (Based on Calamagrostis arenaria Roth.)
Phalaris maritima Nutt. Gen. 1: 48. 1818. (Based on Arundo arenaria L.. but misapplied to
A. breviligulala.) Phalaris ammophila Link, Enum. 1: 66. 1821. (Based on Ammophila arundinacea Host.)
Pale or greenish; culms glabrous, usually scarcely longer than the leaves, 50-150 cm. tall, with deep extensively creeping rhizomes; sheaths glabrous or slightly roughened; ligule thin, 1-3 cm. long; blades elongate, firm, soon involute, as much as 5 mm. broad at base when flat, tapering to a long fine point, the upper surface puberulent; panicle almost cylindric, 10-20 cm. long, 1-2 cm. thick; the axis glabrous below, scabrous above, the branches appressed, scabrous, floriferous from base; spikelets short-pediceled, 1.2-1.5 cm. long; glumes glabrous, scabrous on the keels, lanceolate, pointed, the first 1 -nerved, the second 3-nerved; lemma scabrous, the keel usually minutely excurrent below the tip, the callus hairs about 3 mm. long, the prolongation of the rachilla about 2 mm. long.
Type locality: Europe.
Distribution: Sand dunes along the coast from central California to Oregon; introduced as a sand binder in the vicinity of San Francisco and now established at several places to the north; also coast of Europe and North Africa.
license
cc-by-nc-sa-3.0
bibliographic citation
Albert Spear Hitchcock. 1935. (POALES); POACEAE (pars). North American flora. vol 17(6). New York Botanical Garden, New York, NY
original
visit source
partner site
North American Flora

Physical Description

provided by USDA PLANTS text
Perennials, Terrestrial, not aquatic, Rhizomes present, Rhizome elongate, creeping, stems distant, Stems nodes swollen or brittle, Stems erect or ascending, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems with inflorescence 1-2 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly basal, below middle of stem, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath hairy, hispid or prickly, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blade margins folded, involute, or conduplicate, Leaf blades more or less hairy, Ligule present, Ligule an unfringed eciliate membrane, Ligule elongated, 1-3 cm, Inflorescence terminal, Inflorescence a contracted panicle, narrowly paniculate, branches appres sed or ascending, Inflorescence a dense slender spike-like panicle or raceme, branches contracted, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence spike linear or cylindric, several times longer than wide, Inflorescence single raceme, fascicle or spike, Flowers bisexual, Spikelets pedicellate, Spikelets sessile or subsessile, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating above the glumes, glumes persistent, Rachilla or pedicel hairy, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes equal to or longer than adjacent lemma, Glume equal to or longer than spikelet, Glumes keeled or winged, Glumes 1 nerved, Glumes 3 nerved, Lemma similar in texture to glumes, Lemma 5-7 nerved, Lemma body or surface hairy, Lemma apex d entate, 2-fid, Lemma awnless, Lemma mucronate, very shortly beaked or awned, less than 1-2 mm, Lemma margins thin, lying flat, Lemma straight, Callus or base of lemma evidently hairy, Callus hairs shorter than lemma, Palea present, well developed, Palea membranous, hyaline, Palea about equal to lemma, Palea 2 nerved or 2 keeled, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.
license
cc-by-nc-sa-3.0
compiler
Dr. David Bogler
source
Missouri Botanical Garden
source
USDA NRCS NPDC
original
visit source
partner site
USDA PLANTS text

Ammophila arenaria

provided by wikipedia EN

Ammophila arenaria is a species of flowering plant in the grass family Poaceae. It is known by the common names marram grass and European beachgrass. It is one of two species of the genus Ammophila. It is native to the coastlines of Europe and North Africa where it grows in the sands of beach dunes. It is a perennial grass forming stiff, hardy clumps of erect stems up to 1.2 metres (3.9 ft) in height. It grows from a network of thick rhizomes which give it a sturdy anchor in its sand substrate and allow it to spread upward as sand accumulates. These rhizomes can grow laterally by 2 metres (6 ft 7 in) in six months. One clump can produce 100 new shoots annually.[2]

The rhizomes tolerate submersion in sea water and can break off and float in the currents to establish the grass at new sites.[3] The leaves are up to 1 metre (3 ft 3 in) long and sharply pointed. The cylindrical inflorescence is up to 30 centimetres (12 in) long. It is adapted to habitat made up of shifting, accreting sand layers, as well as that composed of stabilised dunes.[3]

Life cycle/phenology

 src=
A single leaf of marram grass, showing the rolled leaf which reduces water loss
 src=
100x magnified cross section of a curled leaf

Ammophila arenaria is a perennial plant, which means it can live for many years. It mainly grows in spring when leaf production exceeds leaf senescence. However, the conditions in autumn cause the plant to nearly stop growth while its leaves become aged.[4] In winter, because of the cold temperatures, growth is very slow but does not stop.[5] As a xerophytic adaptation, its leaves curl during drought (see pictures). The relatively high humidity within the curled leaf prevents a rapid water loss. This is facilitated by the bulliform cells located at the base of the V-shaped notch which swells and makes the leaf uncurl when filled with water.[6]

This plant is highly adaptive in sand, and can withstand burial for more than one year. Unlike other plants which will die in sand, marram grass will elongate its leaves when it is buried by sand.[7][8]

Its inflorescences are initiated in autumn of the second year after germination and mature in May or June, and its flowers are always produced from May to August.[5] But this is changed to May in Europe because of the different climates.[9] The fruit is always mature in September, and the seeds germinate in the next spring. Though the adult plant is strong, the seeds have low viability, and the seedlings also have low survival rates as well because of desiccation, burial, and erosion.[10] The main organ for its reproduction is rhizomes, which are dispersed along the shore by wind and water.[11]

Geographic distribution and habitat

 src=
Sand dunes densely covered by marram grass at Oxwich Bay, Wales

Natural global range

Ammophila arenaria is a European and North African native plant. It occurs in Australia, Canada, Chile, Falkland Islands (Malvinas) (sub-Antarctic), New Zealand, South Africa and United States (USA).[12]

New Zealand range

Usually occurs on sand dunes, sometimes in inland sites with low fertility.[13] It occurs in the Wellington region and extends from to 55 to 32 degrees south latitude. In the Northern Hemisphere, it grows between 30 and 63 degrees north latitude.[14] Occurs in Chatham Islands, Otago Region, Doughboy Bay and Mason Bay.

Habitat preferences

Marram grass grows on coastal sand dunes all over the world. It prefers growing on the active sand area and the windward side of the foredune. It prefers well-drained soils with different kinds of mineral compositions and low in organic matter. The optimal soil conditions for marram grass is a soil pH from 4.5-9.0, soil temperatures from 10–40 °C (50–104 °F),[15] and salt concentrations of no more than 1.0-1.5%.[16] Marram grass can also be found on alkaline soils with a high pH of around 9.1 and also acidic soils with pH less than 4.5. Adult plants can tolerate a large range of chemical issues. Marram grass has an ability to adapt dry sand well. Its leaves become rolled and tight when moisture levels are low.[14]

Invasiveness: Pacific coast of North America

A. arenaria is one of the most problematic noxious weeds of coastal California. This sand-adapted grass was introduced to the beaches of western North America during the mid-19th century to provide stabilization to shifting sand dunes. It grew readily and it can now be found from California to British Columbia. The grass is invasive in the local ecosystems, forming dense monotypic stands that crowd out native vegetation, reduce species diversity of native arthropods, and cover vital open stretches of sand used for nesting by the threatened western snowy plover (Charadrius nivosus).[3] The plant's spread has changed the topography of some California beach ecosystems, especially in sand dunes. The presence of this grass was a major cause of the destruction of native dune habitat in Oregon and Washington during the 20th century,[17] where it was planted precisely for its dune-stabilizing effect.[18]

Several methods have been employed in attempts to eradicate the grass in California, including manual pulling, burning, mechanical removal followed by salt water irrigation, and glyphosate application.[17] Studies to find the best methods are ongoing.

Invasiveness: New Zealand and Australia

Not only is it invasive in California, it is also a highly invasive weed in coastal areas of New Zealand and Western Australia, where it was introduced for the same purpose in California, to stabilise dunes; outcompeting native spinifex species. However in New Zealand the larvae of the endemic moth species Agrotis innominata has adapted to using A. arenaria as one of its main host species.[19] It has been suggested that prior to the removal of this invasive grass from the coasts of New Zealand that surveys be undertaken to establish whether this endemic moth is present in order to assist with the conservation of that species.[19]

Predators, parasites, and diseases

Marram grass does not carry any major disease in New Zealand, as only 3 pathogenic fungi (Claviceps purpurea, Uredo sp. and Colletotrichum graminicola) are present on the island. These three fungi result in ergot, rust and leaf spot respectively and are found both on flower-heads and leaves. However, in European countries, there are a lot of pests known to feed on marram grass. Those pests killed 30%-40% of the tillers, and also damaged other species. The fungi, always found in soil, may decrease the vigour on the stabilized sand.[20]

Uses

The roots of marram grass are edible, although rather thin and fibrous. The flowering stems and leaves are used for thatching, basketry and making brooms. Fiber from the stem is used for making paper, and the rhizomes are used for making rope and mats.[21]

See also

References

  1. ^ a b c d "Ammophila arenaria". Global Invasive Species Database (GISD).
  2. ^ Apteker, Rachel. "Invasive Plants of California's Wildland: Ammophila arenaria". California Invasive Plants Council. Retrieved 2008-09-18.
  3. ^ a b c "UC Cooperative Extension Species Profile: Ammophila arenaria". University of California. Retrieved 2008-09-18.
  4. ^ Encyclopedia of Life, 2015, Ammophila arenaria.
  5. ^ a b Huiskes, A. H. L. (1979). Ammophila arenaria (L.) Link (Psamma arenaria (L.) Roem. et Schult.; Calamgrostis arenaria (L.) Roth). The Journal of Ecology, 363-382.
  6. ^ Norris, Ryan. "Leaves and Leaf Anatomy". Biology Microscopy. The Ohio State University at Lima. Retrieved 13 May 2021.
  7. ^ Maun, M. A.; Lapierre, J. (1984). "The Effects of Burial by Sand on Ammophila Breviligulata". Journal of Ecology. 72 (3): 827–839. doi:10.2307/2259534. ISSN 0022-0477. JSTOR 2259534.
  8. ^ Ranwell, D. (1960). "Newborough Warren, Anglesey: II. Plant associes and succession cycles of the sand dune and dune slack vegetation". The Journal of Ecology. 48 (1): 117–141. doi:10.2307/2257311. JSTOR 2257311.
  9. ^ Russo, M., Pickart, A., Morse, L., & Young, R. (1988). ELEMENT STEWARDSHIP ABSTRACT for Ammophila arenaria.
  10. ^ content
  11. ^ Wallén, B. (1980). Changes in structure and function of Ammophila during primary succession. Oikos, 227-238
  12. ^ "Ammophila arenaria". Global Invasive Species Database. Retrieved 4 May 2015.
  13. ^ "Ammophila arenaria". New Zealand Plant Conservation Network. Retrieved 4 May 2015.
  14. ^ a b Gadgil, Ruth L. (2006). Marram Grass — Friend or Foe? A Review of the Use of Ammophila arenaria on New Zealand Sand Dunes. Coastal Dune Vegetation Network Technical Bulletin. Vol. 5. Rotorua: New Zealand Forest Research Institute Limited. 32 pp.
  15. ^ Ranwell, D. (1959). Newborough Warren, Anglesey. I. The dune system and dune slack habitat. J. Ecology. 47(3), pp.571-601
  16. ^ Pickart, Andrea J (1997). Control of European Beachgrass (Ammophila arenaria) on the West Coast of the United States. . The Nature Conservancy Lanphere-Christensen Dunes Preserve Arcata. p. CA 95521.
  17. ^ a b Pickart, Andrea J. (1997). "Control of European Beachgrass (Ammophila arenaria) on the West Coast of the United States" (PDF). 1997 Symposium of the California Exotic Pest Plant Council. Retrieved 2008-09-20.
  18. ^ "Exploring the Oregon Dunes . TV | OPB". www.opb.org. Archived from the original on 2017-04-10.
  19. ^ a b B. H. Patrick; K. J. Green (January 1991). "Notes On Agrotis innominata Hudson (Lepidoptera: Noctuidae)". New Zealand Entomologist. 14 (1): 32–36. doi:10.1080/00779962.1991.9722610. ISSN 0077-9962. Wikidata Q105740814.
  20. ^ Gadgil, Ruth L. (2002). "Marram gass (Ammophila arenaria) and coastal sand stability in New Zealand" (PDF). New Zealand Journal of Forestry Science. 32 (2): 165–180.
  21. ^ Plant For A Future. (n.d.). Ammophila arenaria - (L.)Link. Retrieved from http://www.pfaf.org/user/Plant.aspx?LatinName=Ammophila+arenaria

 title=
license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN

Ammophila arenaria: Brief Summary

provided by wikipedia EN

Ammophila arenaria is a species of flowering plant in the grass family Poaceae. It is known by the common names marram grass and European beachgrass. It is one of two species of the genus Ammophila. It is native to the coastlines of Europe and North Africa where it grows in the sands of beach dunes. It is a perennial grass forming stiff, hardy clumps of erect stems up to 1.2 metres (3.9 ft) in height. It grows from a network of thick rhizomes which give it a sturdy anchor in its sand substrate and allow it to spread upward as sand accumulates. These rhizomes can grow laterally by 2 metres (6 ft 7 in) in six months. One clump can produce 100 new shoots annually.

The rhizomes tolerate submersion in sea water and can break off and float in the currents to establish the grass at new sites. The leaves are up to 1 metre (3 ft 3 in) long and sharply pointed. The cylindrical inflorescence is up to 30 centimetres (12 in) long. It is adapted to habitat made up of shifting, accreting sand layers, as well as that composed of stabilised dunes.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN