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Zostera

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Kingdom  Plantae
Family  Zosteraceae
Higher classification  Zosteraceae
Order  Alismatales
Scientific name  Zostera
Rank  Genus
Zostera MarLIN The Marine Life Information Network Common eelgrass
Lower classifications  Zostera marina, Zostera noltei

Eelgrass zostera marina underwater in ireland


Zostera is a small genus of widely distributed seagrasses, commonly called marine eelgrass or (outside North America) simply eelgrass. The genus Zostera contains 15 species.

Contents

Zostera Eelgrass Zostera marina Biodiversity of the Central Coast

Zostera and king scallops at nefyn


Ecology

Zostera Seaweedie Information on marine algae

Zostera marina is found on sandy substrates or in estuaries, usually submerged or partially floating. Most Zostera are perennial. They have long, bright green, ribbon-like leaves, the width of which are about 1 centimetre (0.4 in). Short stems grow up from extensive, white branching rhizomes. The flowers are enclosed in the sheaths of the leaf bases; the fruits are bladdery and can float.

Zostera The genome of the seagrass Zostera marina reveals angiosperm

Zostera beds are important for sediment deposition, substrate stabilization, as substrate for epiphytic algae and micro-invertebrates, and as nursery grounds for many species of economically important fish and shellfish. Zostera often forms beds in bay mud in the estuarine setting. It is an important food for Brent geese and wigeons, and even (occasionally) caterpillars of the grass moth Dolicharthria punctalis.

Zostera httpsuploadwikimediaorgwikipediacommonsthu

The slime mold Labyrinthula zosterae can cause the wasting disease of Zostera, with Z. marina being particularly susceptible, causing a decrease in the populations of the fauna that depend on Zostera.

Zostera Chronicles of Zostera Spring Surveys

Zostera is able to maintain its turgor at a constant pressure in response to fluctuations in environmental osmolarity. It achieves this by losing solutes as the tide goes out and gaining solutes as the tide comes in.

Distribution

Zostera Zostera marina

The genus as a whole is widespread throughout seashores of much of the Northern Hemisphere as well as Australia, New Zealand, Southeast Asia and southern Africa. The discovery of Z. chilensis in 2005 adds an isolated population on the Pacific coast of South America to the distribution. One species (Z. noltii) occurs along the land-locked Caspian Sea.

Current Status

Zostera Why Sequence Zostera marina seagrass DOE Joint Genome Institute

Eelgrass once grew in abundance in Barnegat Bay, New Jersey, where it was harvested, dried and used for insulation in houses, such as the governor's summer mansion in Island Beach State Park. A blight decimated the eelgrass, which ended harvesting of the plant. The plant is making a gradual comeback.

Uses

Eelgrass has been used for food by the Seri tribe of Native Americans on the coast of Sonora, Mexico. The rhizomes and leaf-bases of eelgrass were eaten fresh or dried into cakes for winter food. It was also used for smoking deer meat. The Seri language has many words related to eelgrass and eelgrass-harvesting. The month of April is called xnoois ihaat iizax, literally "the month when the eelgrass seed is mature".

Zostera has also been used as packing material and as stuffing for mattresses and cushions.

On the Danish island of Læsø it has been used for thatching roofs. Roofs of eelgrass are said to be heavy, but also much longer-lasting and easier to thatch and maintain than roofs done with more conventional thatching material.

Zostera can also be utilized to produce biomass energy using the Jean Pain method.

Species

Accepted species

References

Zostera Wikipedia


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