Balls of decomposing detritus from the foliage of the plant are found along nearby shore-lines. From the scientific point of view it belongs to the so-called marine phanerogams, also called spermatophytes (or plants bearing seeds), that is plants that have a differentiation in roots, stems and leaves, as well as having flowers and fruits. It is sometimes referred to as fibreball weed. In light of these characteristics, This seagrass generally lives between 1 and 30 meters deep, where it colonizes the sandy or detrital bottoms to which it adheres by means of the rhizomes (modifications of the stem with reserve function) and on which it forms vast grasslands, the, The fallen leaves of the plant accumulate in the same prairie, but the winter wave carries them and accumulates them along the beaches, causing the known accumulations called ". The rhizome type stems are found in two forms: one growing up to 150 centimetres (59 in) beneath the sand and the other rising above the sand. This arrangement of the rhizomes eventually forms a mat; the surface contains the active parts of the plant, whereas the center is a dense network of roots and decomposing stems. [citation needed] The leaves are bright green, perhaps turning brown with age, and have 13 to 17 parallel veins. [3] Earlier systems classified this genus in the family Potamogetonaceae or in the family Posidoniaceae but belonging to order Zosterales. català: Posidònia corsu: Arba marina Deutsch: Neptungras English: Neptune Grass español: Alga de vidrieros français: Posidonie de Méditerranée magyar: Neptunfű Nederlands: Neptunusgras Common Name(s): Accepted Name(s): Posidonia oceanica (L.) Delile : Taxonomic Status: Current Standing: not accepted - database artifact : Data Quality Indicators: Record Credibility Rating: verified - … Quick facts. Its scientific name, posidonia, is a reference to Poseidon, Greek God of the Sea. Posidonia oceanica meadows are marine habitats in which Posidonia oceanica lives, a marine plant (seagrass) belonging to the Posidoniaceae family. Zostera oceanica L. Higher Taxa: Taxonomy Browser Concept: Andean Bryophytes Bolivia Checklist Catalogue of New World Grasses Ecuador Catalogue Flora Mesoamericana Madagascar Catalogue Manual de Plantas de Costa Rica Moss Flora of China Peru Checklist System details The leaves are ribbon-like, appearing in tufts of 6 or 7, and up to 1.5 metres (4.9 ft) long. Posidonia's experience started with Mr. Enrico Ardito, Mr. Giuseppe Ardito, Mr. Cesare Livraghi before the second world war, under the name of 'Neptunia'. Wetland Status. Posidonia oceanica (L.) Delile and Cymodocea nodosa (Ucria) Asch. On the basis of one selected species, Posidonia oceanica POMI: Meadow cover Seagrass cover (as percentage) is estimated GIG Mediterranean GIG visually for each sub-quadrat in the following classes: 0, 10, 25, 50, 75 and 100 %., indepen- dently by two divers. Among their many functions, Posidonia oceanica meadows play a part in stabilizing seabeds, breaking swells and waves, and encouraging the deposit of sedimentary particles (Boudouresque et al., 2006). P. oceanica is endemic to the Mediterranean Sea, whereas C. nodosa is also present in the northeastern Atlantic Ocean. It is found at depths from 1–35 metres (3.3–114.8 ft),[citation needed] according to water clarity. Scientists studying Posidonia oceanica meadows in the Mediterranean Sea estimate that the largest clone, which stretches more than nine miles, has … In the Mediterranean Sea, the seagrass Posidonia oceanica plays a key ecological role, and is protected by a range of legislation. The Angiosperm Phylogeny Website concludes that the three families Cymodoceaceae, Posidoniaceae and Ruppiaceae form a monophyletic group. Posidonia grows best in clean waters, and its presence is a marker for lack of pollution. Posidonia oceanica is common plant in the White Mediterranean Sea the phenolic compounds as biotic and abiotic resistant agents kill Staphylococcus aureus, Salmonella typhi, Pseudomonas aeruginosa, Proteus mirabilis, Klebsiella 2.1 Posidonia oceanica at 60 ºC for 48 hours. Scientific Name Other Common Names; POOC3: Posidonia oceania (L.) Delile, database artifact: Mediterranean tapeweed The fallen leaves of the plant accumulate in the same prairie, but the winter wave carries them and accumulates them along the beaches, causing the known accumulations called "banquettes". The genus name Posidonia is after Poseidon, the Greek god of the seas. This seagrass generally lives between 1 and 30 meters deep, where it colonizes the sandy or detrital bottoms to which it adheres by means of the rhizomes (modifications of the stem with reserve function) and on which it forms vast grasslands, the Posidonia meadows, which have a high density (over 700 plants per m2). P. oceanica can form large underwater meadows and is being used as a bioindicator. The posidonia oceanica is linked to Mediterranean culture. These clusters of vegetable residues, unjustly detested by swimmers, on the contrary perform a positive function as they attenuate the force of the wave motion and hinder the mechanisms of coastal erosion, thus protecting the sandy coasts. Posidonia oceanica Mediterranean tapeweed Legal Status. Posidonia oceanica (L.) Delile is an endemic Mediterranean sea-grass distributed in the infralittoral zones, where it forms meadows playing a recognized ecological role in the coastal marine habitat. Zostera oceanica L. Homonyms Posidonia oceanica Delile In spite of what the name may suggest, it is an endemic plant of the Mediterranean Sea, that is, it is present exclusively in this territory. To find out more about the cookies we use and how to delete them, see our privacy policy. Taenidium oceanicum (L.) Targ.Tozz. Posidonia oceanica (Flowers and seeds) Aegagropile . Codium bursa (Olivi) C.Agardh. Many of the compounds reported for P. oceanica were, however, not detected by appropriate phytochemical methods and some most probably represent artifacts and are not genuine natural products of P. Photo M. Miozzo. This corresponds to a surface area of about 38,000 square kilometres (15,000 sq mi). Illustrazione dell'ecosistema di Posidonia oceanica Range of Posidonia genus Range of Posidonia oceanica. Its uses, since ancient times, are part of our immaterial heritage. This study experimentally determined the impact of food source type on turnover rate and trophic enrichment factors (TEFs or ∆) of δ 13 C and δ 15 N, as well as on respiration rate, in captive populations of the marine amphipod Gammarus aequicauda. oceanica. Also known as Green Sponge Ball or Ball Alga (English) or Basque Beret (French).. [4], In 2006 a huge clonal colony of P. oceanica was discovered south of the island of Ibiza and stretches as far south as La Savina and Es Pujols on the island of Formentera. If possible, verify the text with references provided in the foreign-language article. Kernera oceanica (L.) Willd. Threat status Europe: Not Evaluated ... Common names and synonyms. What follows is an explanation of the Posidonia oceanica, its ecosystem, and its impact on related … Description: Grass green to blue-green, 10-400 mm wide.Velvety surface firm to touch, solid and spherical when young; maturing to form undulating, converging growths. Common Name(s): Mediterranean tapeweed [English] Taxonomic Status: Current Standing: accepted Data Quality Indicators: Record Credibility Rating: verified - standards met [6][7][8], This species is found only in the Mediterranean Sea where it is in decline, occupying an area of about 3% of the basin. The marine plant forms large meadows that are considered to be of high importance to the environmental conservation of the region. of. It forms large underwater meadows that are an important part of the ecosystem. Posidonia ostenfeldii den Hartog; Posidonia robertsoniae Kuo and Cambridge; Posidonia sinuosa Cambridge and Kuo; The species described by Linnaeus, Posidonia oceanica, is found in the Mediterranean; the rest are located around the southern coast of Australia. Posidonia. [citation needed], The flowering plant's common name is Neptune grass. Posidonia oceanica is a key species of the coastal marine ecosystem, reaching an area around 3% of the entire Mediterranean (corresponding to an area of about 38,000 km2). Posidonia oceanica is a plant adapted to underwater life and a key element to preserve the Mediterranean ecosystems. Posidonia australis is a species of seagrass that occurs in the southern waters of Australia. Accumulation of Posidonia on the beach, Archipelago of La Maddalena National Park (SS). [citation needed] Average leaf width is around 10 millimetres (0.39 in). Posidonia leaves, which can be over 2 meters high and up to 20 meters wide, also form compact and resistant structures along shores that provide a very effective protection against erosion. Drifting vegetation of Posidonia forming banquettes along the beaches is a common feature of many coasts. The genus Posidonia is named after Poseidon, the Greek god of the seas, while oceanica refers to its former wide distribution. Cookies used for the essential operation of this site have already been set. Its flowers indicate that this plant was once a land plant that adapted to living under the sea as, under the sea, flowers do not need to … On hard or soft substrate, these beds constitute one of the main climax communities. Posidonia oceanica, commonly known as Seagrass, is an angiosperm plant, adapted to underwater life.It is a key element to preserve the Mediterranean ecosystems. Do not translate text that appears unreliable or low-quality. All stems are approximately 10 millimetres (0.39 in) thick and upright in habit. The species name oceanica appears to refer to the wide distribution of this plant that is now only found in the Mediterranean Sea. Click below on a thumbnail map or name for species profiles. Posidonia beds (Posidonion oceanicae) Beds of [Posidonia oceanica] (Linnaeus) Delile characteristic of the infralittoral zone of the Mediterranean (depth: ranging from a few dozen centimetres to 30 - 40 metres). Posidonia oceanica Name Synonyms Aegle fragilis Dulac Alga oceanica (L.) Kuntze Caulinia oceanica (L.) DC. This page was last edited on 27 August 2020, at 04:07. Posidonia caulini K.D.Koenig Posidonia oceania (L.) Delile Taenidium acuminatum Targ.Tozz. It has had, nonetheless, many name, before the establishment of a systematic nomenclature by Linneo in the 18 th century. [11], Media related to Posidonia oceanica at Wikimedia Commons. We use cookies to improve our website and your experience when using it. Balls of fibrous material from its foliage, known as egagropili, wash up to nearby shorelines. Subsurface rhizomes and roots stabilize the plant while erect rhizomes and leaves reduce silt accumulation. Although its use as a traditional herbal remedy is poorly documented, recent literature reports interesting pharmacological activities as antidiabetic, antioxidant and vasoprotective. [10], To date 51 natural products have been reported from P. oceanica, including natural phenols, phenylmethane derivatives, phenylethane derivatives, phenylpropane derivatives and their esters, chalkones, flavonols, 5-alpha-cholestanes, and cholest-5-enes. In spite of what the name may suggest, it is an endemic plant of the Mediterranean Sea, that is, it is present exclusively in this territory. Although shoot patchiness has long been studied in Posidonia oceanica meadows, small scale spatial structure of P. oceanica meadows is poorly known, as very few studies focused on this feature. Posidonia spheroids Distribution of the genus Posidonia . The fruit is free floating and known in Italy as "the olive of the sea" (l'oliva di mare[2]). Native Introduced Native and Introduced. are the most common species found in the Mediterranean Sea. Posidonia oceanica is a flowering plant which lives in dense meadows or along channels in the sands of the Mediterranean. At 8 kilometres (5.0 mi) across, and estimated at around 100,000 years old,[5] it may be one of the largest and oldest clonal colonies on Earth. The Plants Database includes the following 1 species of Posidonia . It is found at depths from 1–35 metres (3.3–114.8 ft), according to water clarity. However, residues of seagrass Posidonia oceanica beached in tourist zones represent often a problem in the Mediterranean. Posidonia Mooring and towing marine equipment, proving house for anchors and chains. Carl Linnaeus gave the first botanical description of this species in Systema Naturae, although the genus was then named Zostera. Such plant material has been used for composting, but Italian laws prohibit the use of marine algae and plants for this purpose. The Habitats Directive of the European Union (92/43 EEC of 21/05/1992), and the adaptation with the Directive 97/62/EC of 27 October 1997. Leaves are arranged in groups, with older leaves on the outside, longer and differing in form from the younger leaves they surround. From the scientific point of view it belongs to the so-called marine phanerogams, also called spermatophytes (or plants bearing seeds), that is plants that have a differentiation in roots, stems and leaves, as well as having flowers and fruits. Pergent, G., Semroud, R., Djellouli, A., Langar, H. & Duarte, C. 2010. Posidonia oceanica meadows are marine habitats in which Posidonia oceanica lives, a marine plant (seagrass) belonging to the Posidoniaceae family. Posidonia oceanica is a flowering plant which lives in dense meadows or along channels in the sands of the Mediterranean. Subsurface rhizomes and roots stabilize the plant while erect rhizomes and leaves reduce silt accumulation. [9] The presence of Posidonia can be detected by the masses of decomposing leaves on beaches. In the annex I the posidonia is represented as a priority habitat for conservation and of community interest: “Habitat 1120” (Posidonia oceanica meadows). Posidonia oceanica Recognized by Flickr BHL , iNaturalist , Flickr Group , One Species at a Time Podcasts , National Wetland Plant List USA , Biopix Nature Photos , The European Vegetation Archive (EVA) , FAO Fishery Statistics , and ecology literature Posidonia oceanica, commonly known as Neptune grass or Mediterranean tapeweed, is a seagrass species that is endemic to the Mediterranean Sea. Guala I, Nikolic V, Ivesa L, Di Carlo G, Rajkovic Z, Rodic P, Jelic K (2014): Monitoring Programme for Posidonia Beds (Posidonion oceanicae), MedMPAnet Project 1 MONITORING PROGRAMME FOR POSIDONIA OCEANICA BEDS Common chapters ENGLISH NAME (NATURA CODE) *1120 Posidonia oceanica beds (priority habitat type) Equivalents in different classifications In light of these characteristics, we are talking about a plant and not about an alga, contrary to what common people believe! Répartition du genre Posidonia Méditerranée & Sud Australie. The APG system (1998) and APG II system (2003) accept the genus as constituting the sole genus in the family Posidoniaceae, which it places in the order Alismatales, in the clade monocots. Learn how and when to remove this template message, "Portuguese scientists discover world's oldest living organism", "Implications of Extreme Life Span in Clonal Organisms: Millenary Clones in Meadows of the Threatened Seagrass Posidonia oceanica", http://www.tirsavplus.eu/documenti/normativa/D_lgs_75_2010%20normativa_fertilizzanti.pdf, https://en.wikipedia.org/w/index.php?title=Posidonia_oceanica&oldid=975171594, Articles needing translation from Italian Wikipedia, Articles needing additional references from August 2019, All articles needing additional references, Articles with unsourced statements from August 2019, Creative Commons Attribution-ShareAlike License. oceanica. Posidonia oceanica is a higher plant species and it differs from algae in that it has leaves, stalks and roots as well as flowers and fruit. The leaf terminus is rounded or sometimes absent because of damage. Posidonia oceanica (L.) Delile Images from the web.