©Anne Hoggett: Halophila ovalis (oval leaves) and Halodule uninervis (thin strap-like leaves) exposed at low tide at Lizard Island. White sand, mud. 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. The arrangement of the plant, above and below ground, provides stability to the sea floor and habitat for other species. The main growing period was summer, when marine salinities prevailed, and light supply and temperature were highest. The distribution, biomass and primary production of the seagrass Halophila ovalis in the Swan/Canning Estuary, Western Australia. Report for Halophila ovalis (R.Br.) Rhizomes long, branching; internodes about 2-4 cm long, light yellow, thin, brittle. 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. Hook f. is the dominant benthic plant of the Swan/Canning Estuary, southwestern Australia. 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; 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. Halophila ovalis is a beautiful species of sea grass native to Asia and the South Pacific. We use cookies to help provide and enhance our service and tailor content and ads. 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 Hook. and B. Morton, 1978. Halophila ovalis is also a petiolated seagrass with creeping horizontal rhizomes. ; At least three species of sea urchins were found in the meadow. - "A Taxonomic Study of the Seagrass Genus Halophila (Hydrocharitaceae) from Japan: Description of a New Species Halophila japonica sp. The highest observed growth rate, approximately 2.1 mg DW per apex day−1, was reached at 25°C. 1. Distribution and Biomass of Halophila ovalis (R. Brown) Hook. 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 6150, Australia. Shabei, Xialongwei, Beimu and Yingluo Bay . Distribution in the main estuarine basin differed little between 1976 and 1982, although the species was more ephemeral in the Canning Estuary. 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 number of its contained species, and its own placement in the order Alismatales, has evolved.. Sites are similar in species composition and abundance. Distribution Update: Documentation: Fact Sheets & Plant Guides: Introduced, Invasive, and Noxious Plants : Threatened & Endangered ... Halophila ovalis (R. The dioecious seagrass Halophila ovalis (R. The plants grow from a single rhizome and prefer shallow, calm protected habitats but can be found as deep as 80 feet. f., which is the most common seagrass species that can be found in the tropical waters Hook f. is the dominant benthic plant of the Swan/Canning Estuary, southwestern Australia. 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. Map of Japan showing distribution of Halophila japonica ( ) and H. ovalis ( ) based on recent fieldcollections and herbarium specimens. Enhalus acoroides, Cymodocea rotundata, Halodule uninervis, Halophila ovalis and Thalassia hemprichii dominated the approximately 500 m seagrass bed in the area. Halophila ovalis was investigated in four seagrass beds, i.e. Halophila ovalis, commonly known as paddle weed, spoon grass or dugong grass, is a seagrass in the family Hydrocharitaceae. Halophila is a genus of seagrasses in the family Hydrocharitaceae, the tape-grasses.It was described as a genus in 1806. Th e distribution of Halophila ovalis is confind to . such as Indo-West Pacific. It is a small herbaceous plant that occurs in sea beds and other saltwater environments in the Indo-Pacific. Hook f. is the dominant benthic plant of the Swan/Canning Estuary, southwestern Australia. Gaudichard [15] called H. ovalis-like plant from Mariana as Halophila ovata and Steudel [16] named Thouars’ material as H. madagascariensis. Aquatic Botany, 1, 203-215. Halophila ovalis occupied 550–600 ha in the lower reaches of the estuary, approximately 20% of the area of the main estuarine basin. Figure 13. 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. View 1 Datasets Fatty Acid Data Halophila ovalis (R.Br.) Singapore (Table 1). Wetland Status. Halophila ovalis (R.Br.) Two petioles attached to the node are almost equal in length, ranged 14.20-35.90 mm. Authority: (R.Br.) 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). 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- 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 … Abstract. The seagrass Halophila ovalis (R.Br.) Previous phylogenetic studies found no or little sequence divergence among morphologically distinct species of Halophila nearshore, Family: Hydrocharitaceae. The distribution of intertidal seagrass meadows was certainly constrained by the surface water turbidity. Halophila ovalis. Seagrass of the genus Halophila is widely distributed throughout tropical water, with some species extending its distribution into the subtropical and temperate waters. Aquat. Studies suggest that Halophila ovalis can recover rapidly from grazing by dugong. H. ovalis and H. minor are recorded for Singapore. Leaf blade 18.20-31.45 mm … Hook. Fig. Role in the habitat: This seagrass is among the favourite food of dugongs so it is also sometimes called Dugong grass. Figure 13. Br.) 3f ). Rhizomes long, branching; internodes about 2-4 cm long, light yellow, thin, brittle. Rhizomatous, dioecious, submerged, marine or estuarine perennial, herb. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. ©Anne Hoggett: Halophila ovalis … Salinity, temperature and light were lowest during winter. 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 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. Sea grasses such as Thalassia hempirichii, Halophila ovalis and Halodule uninervis were collected from the It is commonly referred to a spoon grass or paddle weed. Halophila_ovalis - WikiMili, The Free Encyclopedia Seagrass ecosystems are lost due to habitat disturbance, coastal development and human pressure. , dioecious, submerged, marine or estuarine perennial, herb are recorded for Singapore habitat disturbance, development... Distribution in the form of a map using Arc-gis 10.6 software provides stability to the i.e! Study of the Estuary, southwestern Australia uninervis ( thin strap-like leaves ) exposed at low tide Lizard! Science, Murdoch University, Perth, W.A 500 m seagrass bed in the Indo-Pacific biomass Halophila. Access to a spoon grass or dugong grass, is the dominant benthic plant the! M−2 year−1 in outline, appearing on stems that emerge from rhizome beneath the sand a of. Other herbaria beautiful species of sea floor and habitat for other species. 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