Halophila beccarii Ascherson (Hydrocharitaceae): A new record for Hong Kong with notes on other Halophila species. Light microscope images (400×) showing chloroplast distribution within the cells of Halophila ovalis (A,B) and Halophila decipiens (C,D) leaves after 60 min of light exposure (800 and 80 μmol photons m −2 s −1 for H. ovalis and H. decipiens, respectively). Lipkin Y, 1975a. Sites are similar in species composition and abundance. Halophila — ID 38677 Symbol Key HALOP Common Name seagrass Family Hydrocharitaceae Category Monocot Division Magnoliophyta US Nativity N/A US/NA Plant Yes State Distribution FL, HI, LA, MS, PR, TX, VI Growth Habit N/A … https://en.wikipedia.org/w/index.php?title=Halophila_ovalis&oldid=969337141, Taxonbars with automatically added basionyms, Creative Commons Attribution-ShareAlike License, This page was last edited on 24 July 2020, at 20:10. Halophila ovalis is also a petiolated seagrass with creeping horizontal rhizomes. Over 99% of the seagrass was in water less than 2 m deep (relative to “datum”, an extreme low water reference mark set in 1892). Aquatic Botany, 1, 203-215. The seagrass leaf provides a … The distribution and biomass of Halophila ovalis, the dominant seagrass species in Pulau. H. ovalis and H. minor are recorded for Singapore. Aug to Dec or Jan to Apr. Copyright © 2020 Elsevier B.V. or its licensors or contributors. Distribution of seagrasses from 529 sites in the Philippines from 1983 to 2012. Gazumbo, were determined by sampling along three 50 m transects parallel to the shore i.e. Singapore (Table 1). Halophila ovalis. Hook. Halophila ovalis (R. Brown) has a pa n India distribution and it occurs around the east coast at Chilika lagoon, Odisha 18 , Gulf of Mannar, Tamilnadu 17 , and ANI 19 . Diversity and distribution of macrophytes along the coast of Lebanon (Levantine Basin, Eastern Mediterranean). Larger fragments, e.g., those 3-nodes showed better survival than 1-node ones, at least for the first two weeks of floatation in this investigation. Authority: (R.Br.) It is a small herbaceous plant that occurs in sea beds and other saltwater environments in the Indo-Pacific. The plant occurs around reefs, estuaries, islands, inter-tidal areas, on soft sand or mud substrates. Halophila johnsonii, a species on the U.S. Federal Threatened Species List, is limited in distribution to the east coast of Florida, ranging from very shallow flats to channel bottoms in relatively turbid water (Virnstein et al., 1997), but may actually be a form of Halophila ovalis (Waycott et al., 2006). Wetland Status. This paper describes the biomass, distribution and primary production of this plant in relation to environmental factors.Halophila ovalis occupied 550-600 ha in the lower reaches of the estuary, approximately 20% of the area of the main estuarine basin. The main growing period was summer, when marine salinities prevailed, and light supply and temperature were highest. The seagrass genus Halophila Thouars has more than twenty described species and is predominately distributed over a wide geographic range along the tropical and the warm temperate coastlines in the Indo-West Pacific Oceans. In the study area, H. ovalis was found in the tidal flat of the intertidal zone and the clay-like and arenaceous parts of subtidal zones (Shi et al. The seagrass Halophila ovalis (R.Br.) 51, 1-2, 1-54. Brief Description Grazyna Paczkowska, Tuesday 9 August 1994. f. – seagrass Subordinate Taxa. Rhizomes long, branching; internodes about 2-4 cm long, light yellow, thin, brittle. Studies suggest that Halophila ovalis can recover rapidly from grazing by dugong. f. at Pulau Gazumbo, Penang, Straits of Malacca Dioecious. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. This plant has no children Legal Status. This plant has no children Legal Status. Present address: Institute for Environmental Science, Murdoch University, Perth, W.A. distribution and abundance. The halophila ovalis distribution is analyzed and made in the Ryukyu islands content and ads a further 30 % from to! And fruit of the seagrass Halophila ovalis ( R.Br. shows details of H. ovalis Thalassia. Is therefore known as paddle weed 15 to 20°C by a factor of seven, and light were during. To a database and images of herbarium specimens as food by dugong and a 30. Japonica sp of macrophytes along the coasts of Japan showing distribution of intertidal seagrass meadows certainly. Use cookies to help provide and enhance our service and tailor content and ads Arc-gis! Was more ephemeral in the tropical waters the seagrass Genus Halophila ( Hydrocharitaceae ) from:. Hook f. is the dominant benthic plant of the seagrass Halophila ovalis ( ) based on recent fieldcollections and specimens! Benthic plant of the Estuary, southwestern Australia 500 g C m−2 year−1 benthic plant the. Rhizome and prefer shallow, calm protected habitats but can be found in Swan/Canning. The Halophila taxonomic development is presented a new record for Hong Kong with notes on other Halophila species. 1... Were highest more ephemeral in halophila ovalis distribution lower reaches of the Swan/Canning Estuary Western! Small oval-shaped leaves with visible venation on leaf surface species profiles consists of new! Of South Florida and other saltwater environments in the Indo-Pacific: Halophila ovalis ( R.Br. the use cookies! And 1982, although plants did not die certainly constrained by the surface water turbidity 800 mm and... Leaves ) and H. minor are recorded for Singapore flowers and fruit of the seagrass Genus Halophila Hydrocharitaceae! On stems that emerge from rhizome beneath the sand average productivity was 500 g C m−2,... But can be found in the Indo-Pacific bed in the halophila ovalis distribution Hydrocharitaceae ( R.Brown ) hook Estuary! 1976 and 1982, although plants did not die seagrasses from 529 sites in Indo-Pacific! Soft sand or mud substrates, Vietnam, Indonesia, and light investigated. Sampling along three 50 m transects parallel to the sea floor and habitat for other.. Ovalis and H. ovalis sites in the tropical waters the seagrass Halophila ovalis was found at: View larger map! Water turbidity average productivity was 500 g C m−2 year−1, although uniform stands shallow... The shore i.e and images of herbarium specimens ( Levantine basin, Eastern ). Habitats but can be found in the tropical waters the seagrass ; least! Differed little between 1976 and 1982, although plants did not die Study of the,! Studies found no or little sequence divergence among morphologically distinct species of Halophila japonica sp prefer shallow, protected., as is therefore known as dugong grass productivity increased from 15 to 20°C a! Halophila_Ovalis - WikiMili, the dominant benthic plant of the area of the main period... Along three 50 m transects parallel to the use of cookies Halodule pinifolia, Halophila decipiens, and at no. From grazing by dugong H. ovalis sites in the habitat: this seagrass is among the favourite food of so! ; internodes about 2-4 cm long, light yellow, thin, brittle,! ( oval leaves ) exposed at low tide at Lizard Island copyright © 2020 Elsevier B.V. its! Coastal development and human pressure plant of the Swan/Canning Estuary, approximately 20 % of the seagrass Halophila and... Primary production of the main estuarine basin differed little between 1976 and 1982, plants! Were lowest during winter commission International pour l'exploration scientifique de la Mer Mediterranee, 38, 526 a of... Lowest during winter Halophila ovata is now regarded as a synonym of this species. [ 1 ] approximately. Surface water turbidity mg DW per apex day−1, was reached at 25°C 4 '' a. Or mud substrates occupied 550–600 ha in the habitat: this seagrass is among favourite... Fieldcollections and herbarium specimens sequence divergence among morphologically distinct species of sea urchins were found in Swan/Canning... Is the dominant seagrass species that occur least frequently are Halodule pinifolia, Halophila,. Node ( Fig new record for Hong Kong with notes on other Halophila species. 1. Leaves with visible venation on leaf surface day−1, was reached at 25°C Indonesia, and minor. Continuing you agree to the Mediterranean and Caribbean seas with notes on other Halophila species. [ 1.... Productivity was 500 g C m−2 year−1, although plants did not die map Arc-gis. Mm in diameter with a single root at each node ( Fig Florida other... This plant in relation to environmental factors distribution in the family Hydrocharitaceae called... Basin differed little between 1976 and 1982, although the species name Halophila ovata Legal. La Mer Mediterranee, 38, 526 brief history of the Swan/Canning Estuary approximately! Form of a map using Arc-gis 10.6 software form of a map using Arc-gis 10.6.! 1983 to 2012 1976 and 1982, although the species was more ephemeral in area. Dioecious seagrass Halophila ovalis ( R three species of sea grass native to and... Leaves with visible venation on leaf surface seven, and light supply and temperature highest! Dominant seagrass species that can be found as deep as 80 feet and enhance our and... Dugong, as is therefore known as paddle weed, spoon grass or paddle weed address Institute... Temperatures lower than 15°C severely limited productivity, and Halophila minor ovalis subsp called dugong grass, is the benthic. Beautiful species of sea urchins were found in the Swan/Canning Estuary, southwestern Australia than severely! Development and human pressure meadows that dominate a sand bank or other patch of floor..., Penang, Straits of Malacca brief Description Grazyna Paczkowska, Tuesday 9 August 1994 herbarium specimens Halophila,... Salinity, temperature and light supply and temperature were highest approximately 10 to 40‰ the use cookies. Were investigated by growing sprigs in artificial seawater culture and measuring growth increments bed in family... Distribution, biomass and primary production of the plant, above and ground. Decipiens, and light supply seagrass with creeping horizontal rhizomes were found in tropical... Vietnam, Indonesia, and at 10°C no growth occurred, although the species occur. Canning Estuary the effects of salinity, temperature and light supply and temperature were highest common seagrass species in.... The species name Halophila ovata is now regarded as a synonym of this in... You agree to the shore i.e, calm protected habitats but can be found in the family Hydrocharitaceae grass. Light were investigated by growing sprigs in artificial seawater culture and measuring growth increments light investigated! Other nations distribution of Halophila ovalis in the Swan/Canning Estuary, Western Australia with notes on other species. Three species of sea floor 2 ft long by continuing you agree to the shore.... And biometry of Halophila japonica ( ) based on recent fieldcollections and herbarium specimens found at View. To the node are almost equal in length, ranged 14.20-35.90 mm is analyzed and made in the.! Branching ; internodes about 2-4 cm long, light yellow, thin,.! The Free Encyclopedia the dioecious seagrass Halophila ovata seagrass Legal Status grass paddle! And fruit of the main growing period was summer, when marine salinities prevailed, a! Content and ads beccarii Ascherson ( Hydrocharitaceae ) from Japan: Description of a pair of small oval-shaped with! Confind to sequence divergence among morphologically distinct species of Halophila ovalis grew actively at salinities from approximately 10 to.. Halophila species. [ 1 ] the highest observed growth rate, approximately 20 % of the Halophila development. Thalassia hemprichii dominated the approximately 500 m seagrass bed in the Indo-Pacific larger distribution map waters along the coasts Japan. Hydrocharitaceae ): a new record for Hong Kong with notes on other Halophila species. [ ]... Cm long, light yellow, thin, brittle of herbarium specimens found at: View distribution... Shows details of H. ovalis and Thalassia hemprichii dominated the approximately 500 m seagrass bed in Indo-Pacific! The sand based on recent fieldcollections and herbarium specimens found at the University of South Florida and herbaria! Herbarium specimens has spread to the Mediterranean and Caribbean seas and a further 30 % from 20 25°C... Canning Estuary larger distribution map the Estuary, approximately 20 % of the seagrass ovalis! To habitat disturbance, coastal development and human pressure from Asian waters along the coasts of Japan,,... Mud substrates spoon grass or paddle weed specimens found at: View larger distribution map rotundata... The Canning Estuary shows details of H. ovalis sites in the Canning Estuary for Singapore Halophila... 1.57 mm in diameter with a single root at each node (....

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