Halophila is a genus of seagrasses in the family Hydrocharitaceae, the tape-grasses. Distribution and Ecology of Seagrass communities in the Western Indian Ocean. f. (TSN 38959). H. ovalis (collected at lagoon, estuary and open sea) and H. ovalis subsp. Recent morphological and molecular studies by Uchimura et al. Range: Indo-Pacific Ocean - widespread. Family. Halophila ovalis and its closely-related species belonging to the Hydrocharitaceae are well-known as a complex taxonomic challenge mainly due to their high morphological plasticity. Related Links. Genus. It is considered to be “one of the most halophilic eubacteria known.” Its halophilic nature allows for it to be present in conditions that ofte… Bibliographic References Seagrass are the only group of plants that successfully invaded the marine world, evolving from terrestrial plants. Although Waycott, et al., (2004) noted genetic similarities between these related Den Hartog (1970) in his monograph “The sea-grasses of the world” also treated H. euphlebiaas a synonym of H. ovalis. Halorhodospira halophila (formerly Ectothiorhodospira halophila) is an extremely halophilic purple bacterium that was formally a member of the Ectothiorhodospira genus until recently reclassified. Hydrocharitales. morphological form of H. ovalis. A species of seagrass in the genus Halophila was found growing in a shallow lagoon on the west shore of Antigua in the Caribbean West Indies. Halophila stipulacea is a seagrass which has been introduced to the Mediterranean and more recently the Caribbean most likely through fragments transported by commercial and recreational shipping. It was described as a genus in 1806. Copyright notice: the information originating from AlgaeBase may not be downloaded or replicated by any means, without the written permission of the copyright owner (generally AlgaeBase). It is widespread in tropical waters, the distribution range also extends to subtropical and temperate waters primarily the Indian and … & Schult.f. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae ... Halophila species Halophila ovalis Name Homonyms Caulinia ovalis R.Br. (2006), however, demonstrated that H. euphlebiaclearly differs from currently established Halophila species. Bed of Johnson's seagrass. (urn:lsid:marinespecies.org:taxname:208930). These included meadows of Zostera capricorni with some Halophila ovalis inshore, and meadows generally <10% cover of Halophila ovalis, Halophila spinulosa, Halophila decipiens subtidally. Hook. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. Other recent papers using molecular techniques have also failed to clearly differentiate the species. Halophila ovalis and its closely-related species belonging to the Hydrocharitaceae are well-known as a complex taxonomic challenge mainly due to their high morphological plasticity. What is … Individual leaves grow to about 4" with a rhizome of up to 2 ft long. (2008). They should not be confused withseaweeds, and can be easily differentiated by their true roots system as well as veins on their leaves. Studies suggest that Halophila ovalis can recover rapidly from grazing by dugong. Genera Nova Madagascariensia 2, "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew", "Plants Profile for Halophila (seagrass)", Western Australia Seagrass web page for Halophila, https://en.wikipedia.org/w/index.php?title=Halophila&oldid=942902930, Creative Commons Attribution-ShareAlike License, This page was last edited on 27 February 2020, at 16:09. Role in the habitat: This seagrass is among the favourite food of dugongs so it is also sometimes called Dugong grass. Approximately 15km2 of seagrass meadows were lost in the southern Bay in 1996 following a 1-in-20 year flood event and there has been no subsequent recovery. he called Halophila ovata, and left no doubt as to its relationship with the genera now placed in the family Hydrocharitaceae. In this guide, seagrass taxonomy follows den Hartog (1970) and Lanyon (1986) because Halodule pinifolia is distinguished from Halodule uninervis, and Halophila ovata is distinguished from Halophila ovalis. Alismatidae. H. major is recorded as a new species of the genus Halophila in Sri Lanka, and may have a wide distribution and possibly be misidentified as H. ovalis in the previous literature. 2 clade. [1], Louis-Marie Aubert du Petit-Thouars 1806. Several details of both the taxonomy and nomenclature of the species in the Halophila ovalis complex are not acceptably settled in den Hartog's Monograph. initiated a molecular genetic survey on the Halophila taxonomy by using the H. stipulacea materials from the Mediterranean Ocean and concluded that H. stipulacea is a distinct Halophila species. Very similar to Halophila ovalis which can be distinguished by having a more rounded leaf, less cross veins on the leaf surface, and flowers arising on the runners. Proud, A. J. Nguyen et al. Native Introduced Native and Introduced. In addition, the samples had no genetic deviation (using nrDNA sequences) from Halophila johnsonii, considered to be an endemic and endangered species in Florida, USA. Halophila is a genus of seagrasses in the family Hydrocharitaceae, the tape-grasses. Halophila ovalis Tasman, 1858 Common names seagrass in English 卵葉鹽藻 in language. It is a small herbaceous plant that occurs in sea beds and other saltwater environments in the Indo-Pacific. Br.) H. ovalis and H. minor are recorded for Singapore. Natural Environment: Inhabits soft sand and mud substrates in coastal and estuarine areas of the tropics and subtropics where it can be found as deep as 100 feet (30 m). They possess many structure to adapt to their marine existence, such asaerenchymaand use of inorganic carbon in water for photosynthesis5. [4], Species accepted by the Kew Botanical Garden. World-wide electronic publication, National University of Ireland, Galway., This service is powered by LifeWatch Belgium, https://data.aad.gov.au/aadc/biodiversity/, To Biodiversity Heritage Library (130 publications), To Biodiversity Heritage Library (41 publications), To Biological Information System for Marine Life (BISMaL), To GenBank (156 nucleotides; 46 proteins). Lemnopsis Zipp. Welcome to Seagrasses in Taiwan. Click below on a thumbnail map or name for species profiles. Hook. Estimates of meadow characteristics (biomass, branching effort, tagged apices and leaf density) were determined from five replicate samples collected by core (96 mm diameter polycarbonate core inserted 15 cm into the sediment and sieved (2 mm) in the field). Chelonia mydas (green sea turtle) is the largest of all the hard shelled marine turtles, averaging 136 kg (up to 180 kg) in weight and measuring about 1 m in carapace (upper shell) length. Mphil thesis. Liliopsida – Monocotyledons. (2020). Checklist of marine biota of China seas. Liu, J.Y. had also molecularly identified H. stipulacea from the Chilika Lake, India (19°43′ N; 85°19′ E). The University of Hong Kong. Often invades intertidal areas. Caulinia ovalis R.Br. The shell varies in color from green, grey, brown or black, often with splotches or … THE NCBI Taxonomy database allows browsing of the taxonomy tree, which contains a classification of organisms. It is commonly referred to a spoon grass or paddle weed. Seagrasses are clonal plants that may form dense beds or patches in the littoral zone of tropical and temperate seas, where they provide habitats and food for organisms and affect sedimentary and biogeochemical processes ().The dioecious seagrass Halophila ovalis (R. Data in a recent paper by Short, Moore, and Peyton (2010) indicate that H. johnsonii Eisman (TSN 502870) is not clearly distinguishable from Halophila ovalis (R. Halophila ovalis, commonly known as paddle weed, spoon grass or dugong grass, is a seagrass in the family Hydrocharitaceae. Port Phillip Bay Taxonomic Toolkit. 120 species: widely distributed in tropical and subtropical regions of the world; 3 genera and 5 specie Enhalus acoroides, Thalassia hemprichii, Halophila decipiens, Halophila ovalis, Halophila stipulacea in … Genetic analysis showed the plants were Halophila ovalis. Fair usage of data in scientific publications is permitted. ©Anne Hoggett: Halophila ovalis (oval leaves) and Halodule uninervis (thin strap-like leaves) exposed at low tide at Lizard Island. (urn:lsid:marinespecies.org:taxname:208930). In conclusion, Halophila plants collected from Sri Lanka cluster into three clades by the ITS tree, represented as H. major, H. ovalis complex, and Halophila sp. Halophila Thouars – seagrass. The relationship of genetic differentiation and geographic barriers of H. ovalis … the bases of the leaves do not wrap around the stem to form a sheath). AlgaeBase. Hook.f. Studying only herbarium material of this group might lead to Phylogenetically, Halorhodospira halophilais associated within the gamma subdivision of the phylum Proteobacteria and is known to be phototrophic and Gram-negative. Seagrass are true flowering plants living in marine ecosystems. Aleem, A.A. (1984). Homonyms Halophila ovalis (R.Br.) It is widespread in tropical waters, the distribution range also extends to subtropical and temperate waters primarily the Indian and Pacific Oceans but also the Mediterranean and Caribbean Seas and the Gulf of Mexico. Deep Sea Research 31: 919-933. The Plants Database includes the following 8 species of Halophila . [2] The number of its contained species, and its own placement in the order Alismatales, has evolved. Interpreting Wetland Status. Schult. The family contains eighteen genera of which Thalassia, Halophila, and Enhalus are fully marine and ca. 208930  Halophila ovalis is a beautiful species of sea grass native to Asia and the South Pacific. The genus Halophila is comprised of 11 species, several of which have similar morphological features and habitat requirements, including the circumglobal seagrass H. decipiens. [Ruiyu] (ed.). Subclass. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. Halophila ovalis Name Synonyms Caulina ovalis R.Br. ©Anne Hoggett: Halophila ovalis off … ramamurthiana are genetically different (Nguyen et al., 2013). Halophila ovalis is the dominant seagrass growing in both estuaries. The Marine Benthic Flora of Southern Australia. Br.) Thalassia hemprichii is a species of seagrass native to the island-state of Singapore (See distribution).It is considered relatively rare in the country, and listed as “Critically Endangered” in the Singapore Red List Databook.However, T. hemprichii in an important component of mature seagrass habitats due to its biological characteristics. Waycott et al. This shall be the future home of Seagrasses in Taiwan where participants will edit and maintain their classification, upload images, maintain bibliographic resources, among other activities. This warrants more studies at … [1], Unlike other seagrasses, the leaves of some species of Halophila do not have basal sheaths (i.e. The plants grow from a single rhizome and prefer shallow, calm protected habitats but can be found as deep as 80 feet. An ecological survey of the D' Aguilar Peninsula, Hong Kong, with recommendations for its future management. Though the occurrence of H. ovata in the Bay of Bengal was questioned for quite some time, AFLP results confirmed that H. ovalis and H. ovata are distinct species found distributed in 5 different parts of the Bay. Still, seagrasses are restricted by light requirements, an… Order. Entrez: PubMed: Nucleotide: Protein: Genome: Structure: PMC: ... Halophila ovalis Halophila ovalis subsp. Halophila madagascarensis Doty & B.C.Stone, 1967 Kernera ovalis (R.Br.) China Science Press. 1267 pp. (1977). Published in AlgaeBase (from synonym Caulinia ovalis R.Brown, 1810) Published in AlgaeBase (from synonym Halophila madagascarensis Doty & B.C.Stone, 1967) To Barcode of Life (45 barcodes) To Biodiversity Heritage Library (130 publications) To Biodiversity Heritage Library (41 publications) (from synonym Caulinia ovalis R.Brown, 1810) Guiry, M.D. Hydrocharitaceae – Tape-grass family. ex Zoll. The seagrass leaf provides a … Halophila baillonis Florida Keys seagrass ... 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