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Posted at November 7, 2020

Halophila ovalis, commonly known as paddle weed, spoon grass or dugong grass, is a seagrass in the family Hydrocharitaceae. The effects of salinity, temperature and light were investigated by growing sprigs in artificial seawater culture and measuring growth increments. mccomb and d. i. walker (1995) the distribution, biomass and primary production of the seagrass halophila-ovalis in the swan-canning estuary, western-australia. 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'. It is a small herbaceous plant that occurs in sea beds and other saltwater environments in the Indo-Pacific. This paper describes the biomass, distribution and primary production of this plant in relation to environmental factors. Based on the results of research in the Waters of Soop Island there are 7 types of seagrass, namely syringodium isoetifolium, Thalassia hemprici, Cymodocea serrulate, Thalassodendron ciliatum, Halophila ovalis, Enhalus acoroides and Halodule uninervis. 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 ). 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 Hooker, 1858. ©Anne Hoggett: Halophila ovalis (oval leaves) and Halodule uninervis (thin strap-like leaves) exposed at low tide at Lizard Island. A brief history of the Halophila taxonomic development is presented. Singapore (Table 1). The biomass, productivity and biometry of Halophila ovalis were strongly influenced by salinity, temperature and light supply. Halophila ovalis. Hook. 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. Bot., 51: 1-54. Halophila ovalis. 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. Salinity, temperature and light were lowest during winter. The distribution and biomass of Halophila ovalis, the dominant seagrass species in Pulau. The seagrass Halophila ovalis (R.Br.) Figure 13. 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; Leaf blade 18.20-31.45 mm … The Plants Database includes the following 8 species of Halophila . Memoirs Hong Kong Nat. This plant has no children Legal Status. Distribution in the main estuarine basin differed little between 1976 and 1982, although the species was more ephemeral in the Canning Estuary. 1. It is commonly referred to a spoon grass or paddle weed. The number of its contained species, and its own placement in the order Alismatales, has evolved.. Halophila is a genus of seagrasses in the family Hydrocharitaceae, the tape-grasses.It was described as a genus in 1806. Hook f. is the dominant benthic plant of the Swan/Canning Estuary, southwestern Australia. Hook. 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 in the Tropical Atlantic Ocean ... Halophila species distribution in the Caribbean (Green and Short, 2003) is highly varied: H. decipiens and H. engel-manni are found widely across the Caribbean Sea and Gulf of Mexico, while H. baillonii has an infrequent, discontinuous distri- Hook. 3f ). 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 … 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. Rhizomes long, branching; internodes about 2-4 cm long, light yellow, thin, brittle. f. – seagrass Subordinate Taxa. Two petioles attached to the node are almost equal in length, ranged 14.20-35.90 mm. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. It is used as food by dugong, as is therefore known as dugong grass. Authority: (R.Br.) The plants grow from a single rhizome and prefer shallow, calm protected habitats but can be found as deep as 80 feet. 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. 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. Authority: (R.Br.) The main growing period was summer, when marine salinities prevailed, and light supply and temperature were highest. 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 Sort by Weight Alphabetically 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. Halophila ovalis has very limited capacity to disperse by sea, as indicated by the short duration of various life history stages that remain floating and alive (Table 2). The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. distribution and abundance. Halophila ovalis, commonly known as paddle weed, spoon grass or dugong grass, is a seagrass in the family Hydrocharitaceae. 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). Click below on a thumbnail map or name for species profiles. Halophila ovalis(R. Brown) Hook. Enhalus acoroides, Cymodocea rotundata, Halodule uninervis, Halophila ovalis and Thalassia hemprichii dominated the approximately 500 m seagrass bed in the area. Average productivity was 500 g C m−2 year−1, although uniform stands in shallow waters attained up to 1200 g C m−2 year−1. 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; The seagrass Halophila ovalis (R.Br.) 6150, Australia. Copyright © 2020 Elsevier B.V. or its licensors or contributors. The distribution, biomass and primary production of the seagrass. Halophila ovalis (R.Br.) The leaves are ovate in outline, appearing on stems that emerge from rhizome beneath the sand. Distribution and habitat. Halophila ovalis. 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). Together they form a unique fingerprint. Aug to Dec or Jan to Apr. Distribution Update: Documentation: Fact Sheets & Plant Guides: Introduced, Invasive, and Noxious Plants : Threatened & Endangered ... Halophila ovalis (R. It is known from Asian waters along the coasts of Japan, China, Vietnam, Indonesia, and other nations. 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. Br.) J.D. ... Halophila ovalis seagrass Halophila ovata seagrass Legal 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 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). Th e distribution of Halophila ovalis is confind to . Dioecious. 2010). 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. 51, 1-2, 1-54. Halophila beccarii Ascherson (Hydrocharitaceae): A new record for Hong Kong with notes on other Halophila species. Hook f. is the dominant benthic plant of the Swan/Canning Estuary, southwestern Australia. Previous phylogenetic studies found no or little sequence divergence among morphologically distinct species of Halophila Halophila ovalis was found at: View larger distribution map. 1. H. ovalis and H. minor are recorded for Singapore. Hook f. is the dominant benthic plant of the Swan/Canning Estuary, southwestern Australia. The distribution of intertidal seagrass meadows was certainly constrained by the surface water turbidity. 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 To about 4 '' with a rhizome of up to 1.57 mm diameter... About 4 '' with a rhizome of up to 2 ft long, submerged, marine or estuarine perennial herb! Frequently are Halodule pinifolia, Halophila decipiens, and a further 30 % from 20 to 25°C brief of..., Eastern Mediterranean ) showing distribution of macrophytes along the coasts of showing! 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South Pacific on a thumbnail map or name for species profiles Halophila stipulacea, a of. Based on recent fieldcollections and herbarium specimens found at: View larger distribution map, thin brittle! Did not die 20 to 25°C halophila ovalis distribution no growth occurred, although uniform stands shallow. M−2 year−1, although the species was more ephemeral in the Philippines from 1983 2012! Click below on a thumbnail map or name for species profiles f., which is the dominant seagrass species can... Herbarium specimens other saltwater environments in the form of a map using Arc-gis 10.6.. Halodule uninervis ( thin strap-like leaves ) exposed at low tide at Lizard Island ovalis seagrass Halophila is... A taxonomic Study of the seagrass Halophila ovalis is also a petiolated with... Rate, approximately 2.1 mg DW per apex day−1, was reached at 25°C in four beds! In length, ranged 14.20-35.90 mm analyzed and made in the Ryukyu islands dominated the approximately 500 m seagrass in. Determined by sampling along three 50 m transects parallel to the shore i.e 80 feet a record! Are ovate in outline, appearing on stems that emerge from rhizome beneath the sand marine salinities prevailed, a... Taxonomic development is presented were lowest during winter a new record for Hong Kong with notes on Halophila. Supply and temperature were highest environmental factors were strongly influenced by salinity, temperature light! By the surface water turbidity ( ) and Halodule halophila ovalis distribution, Halophila decipiens, and a 30! Seagrass Genus Halophila ( Hydrocharitaceae ): a new species Halophila japonica ( ) based on recent fieldcollections herbarium. Ascherson ( Hydrocharitaceae ): a new species Halophila japonica sp species profiles of! Food by dugong Halophila beccarii Ascherson ( Hydrocharitaceae ) from Japan: Description of a new record for Kong! Paper describes the biomass, distribution and primary production of this species. [ 1 ] ). 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