Halophila is a genus of seagrasses in the family Hydrocharitaceae, the tape-grasses.It was described as a genus in 1806. Rhizomes long, branching; internodes about 2-4 cm long, light yellow, thin, brittle. White sand, mud. mccomb and d. i. walker (1995) the distribution, biomass and primary production of the seagrass halophila-ovalis in the swan-canning estuary, western-australia. Dioecious. Hook f, is the dominant benthic plant of the Swan/Canning Estuary, southwestern Australia. Diversity and distribution of macrophytes along the coast of Lebanon (Levantine Basin, Eastern Mediterranean). The distribution, biomass and primary production of the seagrass Halophila ovalis in the Swan/Canning Estuary, Western Australia. The Plants Database includes the following 8 species of Halophila . At peak biomass, the area of Halophila ovalis in the estuary represented approximately 350 t DW of plant material, 4200 kg of nitrogen and 630 kg of phosphorus. This plant has no children Legal Status. Hook f. is the dominant benthic plant of the Swan/Canning Estuary, southwestern Australia. Brief Description Grazyna Paczkowska, Tuesday 9 August 1994. Figure 13. 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 … The effects of salinity, temperature and light were investigated by growing sprigs in artificial seawater culture and measuring growth increments. and B. Morton, 1978. Halophila ovalis was investigated in four seagrass beds, i.e. Two petioles attached to the node are almost equal in length, ranged 14.20-35.90 mm. J.D. Halophila ovalis. This paper describes the biomass, distribution and primary production of this plant in relation to environmental factors. Halophila ovalis. Fig. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. A brief history of the Halophila taxonomic development is presented. The biomass, productivity and biometry of Halophila ovalis were strongly influenced by salinity, temperature and light supply. The first description of the species was by Robert Brown as Caulinia ovalis, this was transferred to the genus Halophila by Joseph Dalton Hooker in Flora Tasmaniae (1858). Role in the habitat: This seagrass is among the favourite food of dugongs so it is also sometimes called Dugong grass. 3f ). Halophila ovalis(R. Brown) Hook. Each site has only been sampled once. J.D. 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. Fig. 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 … 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). The species that occur least frequently are Halodule pinifolia, Halophila decipiens, and Halophila minor. Then the data is analyzed and made in the form of a map using Arc-gis 10.6 software. The seagrass Halophila ovalis (R.Br.) 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 . Distribution Update: Documentation: Fact Sheets & Plant Guides: Introduced, Invasive, and Noxious Plants : Threatened & Endangered ... Halophila ovalis (R. Present address: Institute for Environmental Science, Murdoch University, Perth, W.A. f. at Pulau Gazumbo, Penang, Straits of Malacca The leaves are ovate in outline, appearing on stems that emerge from rhizome beneath the sand. Br.) f. – seagrass Subordinate Taxa. Halophila ovalis. Gazumbo, were determined by sampling along three 50 m transects parallel to the shore i.e. Wetland Status. 26. 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). It is a small herbaceous plant that occurs in sea beds and other saltwater environments in the Indo-Pacific . Lipkin Y, 1975a. The distribution, biomass and primary production of the seagrass. 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. 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. Halophila ovalis, commonly known as paddle weed, spoon grass or dugong grass, is a seagrass in the family Hydrocharitaceae. 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. The plants grow from a single rhizome and prefer shallow, calm protected habitats but can be found as deep as 80 feet. Family: Hydrocharitaceae. Uniform stands of Halophila ovalis reached a biomass of up to 120 g dry weight (DW) m−2 in late summer/early autumn, and maximum productivities of up to 40 g DW m−2 day−1 in summer. Inset shows details of H. ovalis sites in the Ryukyu Islands. Rhizomes long, branching; internodes about 2-4 cm long, light yellow, thin, brittle. Halophila ovalis, commonly known as paddle weed, spoon grass or dugong grass, is a seagrass in the family Hydrocharitaceae. Halophila ovalis was found at: View larger distribution map. The roots get up to 800 mm long and covered in fine root hairs. Halophila ovalis, commonly known as paddle weed, spoon grass or dugong grass, is a seagrass in the family Hydrocharitaceae. The most ubiquitous species is Halophila ovalis, which can be found at 29 of the 32 locations where seagrass is present, followed by Enhalus acoroides (24 of the 32 locations). White sand, mud. Fingerprint Dive into the research topics of 'The distribution, biomass and primary production of the seagrass Halophila ovalis in the Swan/Canning Estuary, Western Australia'. Hook.f. Aug to Dec or Jan to Apr. Halophila ovalis (R.Br.) Field and laboratory studies indicated that during years of average river discharge (1980, 1982), Halophila ovalis was little affected by the salinity range experienced (15–35‰). This is a common plant of the sublittoral zone in its range, growing in depths up to 20 meters in lagoons, on reefs, and in many other types of marine habitat just offshore. ©Anne Hoggett: Halophila ovalis (oval leaves) and Halodule uninervis (thin strap-like leaves) exposed at low tide at Lizard Island. It has spread to the Mediterranean and Caribbean seas. Aug to Dec or Jan to Apr. We assessed the impact of boat anchors from traditional fishing and recreational activities on the seagrass Halophila ovalis from the Andaman and Nicobar Isalnds of India. Studies suggest that Halophila ovalis can recover rapidly from grazing by dugong. Saturating irradiance was approximately 200 μE m−2 s−1 (10% of surface PAR) and compensation point was approximately 40 μE m−2 s−1 (2% of full sunlight PAR). 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. Authority: (R.Br.) Halophila ovalis occupied 550–600 ha in the lower reaches of the estuary, approximately 20% of the area of the main estuarine basin. Halodule pinifoliahave long, fine leaf structures with rounded leaf tips while Halodule uninervis, only slightly larger in size than Halodule pinifolia, have distinguishable trident-like leaf tips. Hook. View 1 Datasets Fatty Acid Data Halophila ovalis (R.Br.) Halophila beccarii Ascherson (Hydrocharitaceae): A new record for Hong Kong with notes on other Halophila species. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Halophila ovalis (R.Br.) Halophila_ovalis - WikiMili, The Free Encyclopedia 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 Report for Halophila ovalis (R.Br.) Together they form a unique fingerprint. The model was relatively successful at predicting seasonal growth responses, but underestimated spring productivity, probably because the unpredictable light climate in spring in the Swan River was not fully simulated. Halophila ovalis consists of a pair of small oval-shaped leaves with visible venation on leaf surface. Aquat. such as Indo-West Pacific. 6150, Australia. It is a small herbaceous plant that occurs in sea beds and other saltwater environments in the Indo-Pacific. Rhizomes up to 1.57 mm in diameter with a single root at each node ( Fig. Lakkis S, Novel-Lakkis V, 2007. The seagrass Halophila ovalis (R.Br.) distribution and abundance. 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; f. – seagrass Subordinate Taxa. Shabei, Xialongwei, Beimu and Yingluo Bay . - "A Taxonomic Study of the Seagrass Genus Halophila (Hydrocharitaceae) from Japan: Description of a New Species Halophila japonica sp. Each factor was investigated separately; salinity values ranged from 5 to 45‰, temperature from 10 to 25°C and light from 0 to 400 μE m−2 s−1. Abstract. 1. Singapore (Table 1). Singapore (Table 1). Distribution and Biomass of Halophila ovalis (R.Brown) Hook. The plant occurs around reefs, estuaries, islands, inter-tidal areas, on soft sand or mud substrates. This plant has no children Legal Status. It is a small herbaceous plant that occurs in sea beds and other saltwater environments in the Indo-Pacific. nearshore, It is known from Asian waters along the coasts of Japan, China, Vietnam, Indonesia, and other nations. The seagrass Halophila ovalis (R.Br.) Th e distribution of Halophila ovalis is confind to . The distribution and biomass of Halophila ovalis, the dominant seagrass species in Pulau. Salinity, temperature and light were lowest during winter. Aquatic Botany, 1, 203-215. It occurs on Pacific Islands such as Fiji. 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. ©Anne Hoggett: Halophila ovalis … It is used as food by dugong, as is therefore known as dugong grass. Authority: (R.Br.) Fl. 9: Hodgkiss, I.J. Distribution and Biomass of Halophila ovalis (R. Brown) Hook. Halophila ovalis was found at: View larger distribution map. Commission International pour l'exploration scientifique de la Mer Mediterranee, 38, 526. 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 distribution of intertidal seagrass meadows was certainly constrained by the surface water turbidity. ©Anne Hoggett: Halophila ovalis … Br.) H. stipulacea is a marine angiosperm, native to the tropical and subtropical waters of the Red Sea, Persian Gulf and Indian Ocean. Sea grasses such as Thalassia hempirichii, Halophila ovalis and Halodule uninervis were collected from the Fig. Map of Japan showing distribution of Halophila japonica ( ) and H. ovalis ( ) based on recent fieldcollections and herbarium specimens. 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. Hook f. is the dominant benthic plant of the Swan/Canning Estuary, southwestern Australia. The seagrass Halophila ovalis (R.Br.) However, during 1981, a year of high discharge, conditions of low salinity and poor light supply caused severe declines in biomass, particularly in the Canning Estuary. 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. Leaf blade 18.20-31.45 mm … H. ovalis and H. minor are recorded for Singapore. ID 38686 Symbol Key HAOV Common Name seagrass Family Hydrocharitaceae Category Monocot Division Magnoliophyta US Nativity Cultivated, or not in the U.S. US/NA Plant Yes State Distribution N/A Growth Habit N/A Distribution and habitat. The number of its contained species, and its own placement in the order Alismatales, has evolved.. The distribution of intertidal seagrass meadows was certainly constrained by the surface water turbidity. Distribution of seagrasses from 529 sites in the Philippines from 1983 to 2012. Distribution of seagrasses from 529 sites in the Philippines from 1983 to 2012. 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 ovalis is a beautiful species of sea grass native to Asia and the South Pacific. Seagrass ecosystems are lost due to habitat disturbance, coastal development and human pressure. Distribution in the main estuarine basin differed little between 1976 and 1982, although the species was more ephemeral in the Canning Estuary. Halophila ovalis occupied 550–600 ha in the lower reaches of the estuary, approximately 20% of the area of the main estuarine basin. Gaudichard [15] called H. ovalis-like plant from Mariana as Halophila ovata and Steudel [16] named Thouars’ material as H. madagascariensis. f., which is the most common seagrass species that can be found in the tropical waters 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 seagrass Halophila ovalis (R.Br.) Memoirs Hong Kong Nat. 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). Thalassia hemprichii has shown continuity in growth from intertidal zone to subtidal zone waters, whereas Halodule uninervis and Halophila ovalis did not show this continuity in the study area. Copyright © 2020 Elsevier B.V. or its licensors or contributors. Flowers and fruit of the seagrass Halophila ovalis subsp. Halophila species (H. ovalis, H. stipulacea, H. spinulosa) had already been described under other genera as Zostera stipulacea [13], Caulinia ovalis and C. spinulosa [14]. View 1 Datasets Fatty Acid Data Halophila ovalis (R.Br.) Individual leaves grow to about 4" with a rhizome of up to 2 ft long. The seagrass leaf provides a … Br.) Fl. f. is widely distributed in the tropical Indo-West Pacifi c and is also found in some areas outsides the tropics ( den Hartog and Kuo, 2006 ). The dioecious seagrass Halophila ovalis (R. It is commonly referred to a spoon grass or paddle weed. 51, 1-2, 1-54. Hooker, 1858. 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