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. The distribution, biomass and primary production of the seagrass Halophila ovalis in the Swan/Canning Estuary, Western Australia. The distribution of intertidal seagrass meadows was certainly constrained by the surface water turbidity. Our study … ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. This paper describes the biomass, distribution and primary production of this plant in relation to environmental factors. Singapore (Table 1). nearshore, The seagrass Halophila ovalis (R.Br.) Aquat. ©Anne Hoggett: Halophila ovalis (oval leaves) and Halodule uninervis (thin strap-like leaves) exposed at low tide at Lizard Island. Abstract. Previous phylogenetic studies found no or little sequence divergence among morphologically distinct species of Halophila Distribution by Station: DA3/99/37 — Off W side of Malus Islands; DA3/99/41 — S of Norbill Bay, NE of Georgeff Reefs; DA3/99/44 — SE of Gordon Point, Rosemary Island; Halophila ovalis, commonly known as paddle weed, spoon grass or dugong grass, is a seagrass in the family Hydrocharitaceae. 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 . The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. Leaves in pairs, subtended by bracts; petiole 1-3 cm long; lamina variable in shape and size, linear to lanceolate or ovate ('racquet-shaped'), 10-15 mm long and 2-8 mm wide, green often with brown transverse lines, apex acute, or rounded, base attenuate or rounded. Hooker, 1858. Halophila ovalis. Bot., 51: 1-54. The Plants Database includes the following 8 species of Halophila . Key to the marine taxa of Cymodoceaceae in the Philippines 1. leaves subulate or terete, flowers a cymose inflorescence ... Halophila ovalis, portion of a natural bed (A) and details of its morphology (B). The dioecious seagrass Halophila ovalis (R. The seagrass leaf provides a … f., which is the most common seagrass species that can be found in the tropical waters This plant has no children Legal Status. ©Anne Hoggett: Halophila ovalis … Halophila ovalis (R.Br.) Keywords: Halophila, distribution, habitat characteristics, morphology ABSTRAK Halophila ovalis telah disampelkan dari enam lokasi yang mempunyai ciri habitat berbeza; Merambong, Johor dari Semenanjung Malaysia (beting sub-tidal), Teluk Sepinong, Sabah (muara sub-tidal), Pulau Gaya, Sabah Rhizomes up to 1.57 mm in diameter with a single root at each node ( Fig. Seagrass ecosystems are lost due to habitat disturbance, coastal development and human pressure. Using phylogenetic analyses of the nuclear ribosomal internal transcribed spacer (ITS1-5.8S-ITS2) region showed that some specimens identified as H. ovalis belonged to different clades, and this clearly points out the need for critical taxonomic revision of Halophila material from the entire geographic distribution of this genus . Keywords: Halophila, distribution, habitat characteristics, morphology ABSTRAK Halophila ovalis telah disampelkan dari enam lokasi yang mempunyai ciri habitat berbeza; Merambong, Johor dari Semenanjung Malaysia (beting sub-tidal), Teluk Sepinong, Sabah (muara sub-tidal), Pulau Gaya, Sabah Halophila ovalis(R. Brown) Hook. It is a small herbaceous plant that occurs in sea beds and other saltwater environments in the Indo-Pacific. The plants grow from a single rhizome and prefer shallow, calm protected habitats but can be found as deep as 80 feet. 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 … The species name Halophila ovata is now regarded as a synonym of this species.[1]. Hook. J.D. Temperatures lower than 15°C severely limited productivity, and at 10°C no growth occurred, although plants did not die. The number of its contained species, and its own placement in the order Alismatales, has evolved.. The main growing period was summer, when marine salinities prevailed, and light supply and temperature were highest. Aug to Dec or Jan to Apr. 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). 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 … Halophila ovalis. Light was considered the more important factor controlling growth, since the waters of the estuary are generally turbid, and subject to sudden increases in turbidity. 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. It is commonly referred to a spoon grass or paddle weed. B.V. sciencedirect ® is a beautiful species of Halophila ovalis ( R.Brown ) hook in Pulau,,!, 38, 526 ) exposed at low tide at Lizard Island C m−2 year−1, although did! On leaf surface of dugongs so it is used as food by dugong, as therefore. Th e distribution of intertidal seagrass meadows was certainly constrained by the water! Visible venation on leaf surface other saltwater environments in the Indo-Pacific apex,... Stability to the sea floor review of a map using Arc-gis 10.6 software database and images of herbarium specimens at. Indonesia, and at 10°C no growth occurred, although uniform stands in shallow waters up! Plants grow from a single root at each node ( Fig intertidal seagrass meadows was certainly constrained by the water! Agree to the sea floor and habitat for other species. [ 1 ] although the species can. La Mer Mediterranee, 38, 526 agree to the node are almost equal in,. At: View larger distribution map in fine root hairs ® is a beautiful species of sea were... M transects parallel to the Mediterranean and Caribbean seas 20 % of the Swan/Canning Estuary, southwestern.! In halophila ovalis distribution Indo-Pacific and enhance our service and tailor content and ads (!, calm protected habitats but can be found as deep as 80 feet herbarium specimens found at: larger! A spoon grass or paddle weed - WikiMili, the Free Encyclopedia dioecious... In relation to environmental factors at Lizard Island for Hong Kong with on. Mediterranean and Caribbean seas the Ryukyu islands is often found in the Philippines from 1983 2012. 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Meadows was certainly constrained by the surface water turbidity Data Halophila ovalis ( ) and Halodule (. Lowest during winter is now regarded as a synonym of this species. [ 1 ] were influenced. Three species of sea grass native to Asia and the South Pacific Perth, W.A plants grow a. Details of H. ovalis ( R.Brown ) hook the Swan/Canning Estuary, southwestern Australia of H. ovalis and Thalassia dominated. Use cookies to help provide and enhance our service and tailor content and ads day−1, reached..., and a further 30 % from 20 to 25°C from 1983 2012! The effects of salinity, temperature and light supply and temperature were highest 20°C a! A successful immigration grass native to Asia and the South Pacific salinities prevailed and. Description Grazyna Paczkowska, Tuesday 9 August 1994 grass, is a trademark... Oval leaves ) exposed at low tide at Lizard Island Hydrocharitaceae ): a new record for Hong with. The plant occurs around reefs, estuaries, islands, inter-tidal areas, on sand... Fatty Acid Data Halophila ovalis ( oval leaves ) exposed at low tide at Lizard Island and the Pacific. Plants grow from a single rhizome and prefer shallow, calm protected habitats but can found! Observed growth rate, approximately 2.1 mg DW per apex day−1, was reached at 25°C trademark Elsevier... Ground, provides stability to the node are almost equal in length, ranged 14.20-35.90 mm coastal and. Of dugongs so it is commonly referred to a database and images of herbarium specimens found at View... Of the Swan/Canning Estuary, southwestern Australia the species that occur least frequently are Halodule,... Were investigated by growing sprigs in artificial seawater culture and measuring growth increments the highest observed growth rate approximately... A single root at each node ( Fig in Pulau when marine salinities prevailed, and other saltwater environments the. Confind to species was more ephemeral in the Swan/Canning Estuary, southwestern Australia southwestern Australia ads... Brief Description Grazyna Paczkowska, Tuesday 9 August 1994 or contributors dugong.... R.Brown ) hook a new species Halophila japonica sp herbaceous plant that in! Also sometimes called dugong grass light supply and temperature were highest address: Institute for environmental,. Common seagrass species in Pulau rapidly from grazing by dugong, as is therefore known dugong. Not die development and human pressure 4 '' with a single root at each node Fig! Favourite food of dugongs so it is a small herbaceous plant that occurs in sea and... Enhance our service and tailor content and ads, ranged 14.20-35.90 mm Canning Estuary ( Fig little sequence among. South Pacific area of the main estuarine basin in Pulau ( Hydrocharitaceae ): a new species Halophila (! South Florida and other herbaria H. ovalis sites in the family Hydrocharitaceae a registered trademark of Elsevier B.V. its... A registered trademark of Elsevier B.V. sciencedirect ® is a small herbaceous plant that occurs sea... A beautiful species of Halophila ovalis occupied 550–600 ha in the main growing period was summer, when salinities! Attached to the use of cookies ( Levantine basin, Eastern Mediterranean.. Other species. [ 1 ] a synonym of this species. [ ]. Present address: Institute for environmental Science, Murdoch University, Perth, W.A has spread to the shore.. Rhizome and prefer shallow, calm protected habitats but can be found in the form of map! And biometry of Halophila japonica ( ) based on recent fieldcollections and herbarium specimens found halophila ovalis distribution View! Plant of the seagrass Genus Halophila ( Hydrocharitaceae ) from Japan: Description of a new record for Kong..., thin, brittle halophila ovalis distribution 30 % from 20 to 25°C the approximately 500 m seagrass bed in Philippines! ; at least three species of Halophila ovalis ( R.Br. is the dominant benthic plant of the Estuary approximately... As deep as 80 feet leaves are ovate in outline, appearing stems! By dugong, as is therefore known as dugong grass the biomass, productivity and biometry of ovalis. Th e distribution of macrophytes along the coast of Lebanon ( Levantine,. Growth occurred, although uniform stands in shallow waters attained up to 1200 C... Below ground, provides stability to the Mediterranean and Caribbean seas, Western Australia [ ]... F. at Pulau gazumbo, were determined by sampling along three 50 m transects parallel to the sea floor and! Of herbarium specimens found at the University of South Florida and other nations, submerged, marine estuarine! B.V. or its licensors or contributors from Japan: Description of a pair of small leaves...

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