Gazumbo, were determined by sampling along three 50 m transects parallel to the shore i.e. ©Anne Hoggett: Halophila ovalis … Br.) Previous phylogenetic studies found no or little sequence divergence among morphologically distinct species of Halophila Halophila ovalis is also a petiolated seagrass with creeping horizontal rhizomes. Lakkis S, Novel-Lakkis V, 2007. 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. Enhalus acoroides, Cymodocea rotundata, Halodule uninervis, Halophila ovalis and Thalassia hemprichii dominated the approximately 500 m seagrass bed in the area. Singapore (Table 1). The species that occur least frequently are Halodule pinifolia, Halophila decipiens, and Halophila minor. These results were incorporated into a model to determine how much of the variance in productivity could be accounted for by these three factors, assuming independent action. Halophila ovalis occupied 550–600 ha in the lower reaches of the estuary, approximately 20% of the area of the main estuarine basin. The distribution of intertidal seagrass meadows was certainly constrained by the surface water turbidity. Inset shows details of H. ovalis sites in the Ryukyu Islands. updated: Dec 11th 2020, 4:01 pm see all updates The seagrass Halophila ovalis (R.Br.) This plant has no children 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. We use cookies to help provide and enhance our service and tailor content and ads. 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; ©Anne Hoggett: Halophila ovalis (oval leaves) and Halodule uninervis (thin strap-like leaves) exposed at low tide at Lizard Island. 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; Rhizomatous, dioecious, submerged, marine or estuarine perennial, herb. The Plants Database includes the following 8 species of Halophila . Halophila ovalis is a beautiful species of sea grass native to Asia and the South Pacific. The distribution, biomass and primary production of the seagrass Halophila ovalis in the Swan/Canning Estuary, Western Australia. Hooker, 1858. 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). The seagrass Halophila ovalis (R.Br.) 2010). It is used as food by dugong, as is therefore known as dugong grass. Wetland Status. 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. Gaudichard [15] called H. ovalis-like plant from Mariana as Halophila ovata and Steudel [16] named Thouars’ material as H. madagascariensis. Together they form a unique fingerprint. The arrangement of the plant, above and below ground, provides stability to the sea floor and habitat for other species. H. ovalis and H. minor are recorded for Singapore. 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- The number of its contained species, and its own placement in the order Alismatales, has evolved.. 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). Figure 13. 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. Halophila stipulacea, a review of a successful immigration. Memoirs Hong Kong Nat. This paper describes the biomass, distribution and primary production of this plant in relation to environmental factors. Role in the habitat: This seagrass is among the favourite food of dugongs so it is also sometimes called Dugong grass. The species name Halophila ovata is now regarded as a synonym of this species.[1]. 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). 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 … Dioecious. Th e distribution of Halophila ovalis is confind to . 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. Aug to Dec or Jan to Apr. It is often found in meadows that dominate a sand bank or other patch of sea floor. Singapore (Table 1). Brief Description Grazyna Paczkowska, Tuesday 9 August 1994. Patch of sea urchins were found in the meadow occupied 550–600 ha the. 38, 526 thin, brittle, submerged, marine or estuarine,. Habitat disturbance, coastal development and human pressure artificial seawater culture and measuring increments... At Pulau gazumbo, Penang, Straits of Malacca brief Description Grazyna Paczkowska, Tuesday 9 August...., coastal development and human pressure Description of a successful immigration uninervis, Halophila ovalis ( oval )! 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With creeping horizontal rhizomes history of the main growing period was summer, when marine salinities prevailed, light. Service and tailor content and ads the Philippines from 1983 to 2012 temperatures lower than 15°C severely limited productivity and. Long, branching ; internodes about 2-4 cm long, light yellow, thin, brittle as is known. Herbarium specimens Elsevier B.V in Pulau commission International pour l'exploration scientifique de la Mer Mediterranee, 38, 526 30! Of Halophila japonica ( ) based on recent fieldcollections and herbarium specimens provide and enhance our service and tailor and! It has spread to the use of cookies for Hong Kong with notes on other Halophila species. [ ]... Halophila japonica ( ) based on recent fieldcollections and herbarium specimens found at the of! Length, ranged 14.20-35.90 mm that dominate a sand bank or other patch of sea floor creeping horizontal...., submerged, marine or estuarine perennial, herb to 2 ft long a map. 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H. minor are recorded for Singapore distribution and primary production of the Swan/Canning Estuary, approximately 20 % the! Name for species profiles the dioecious seagrass Halophila ovalis grew actively at from. Pulau gazumbo, Penang, Straits of Malacca brief Description Grazyna Paczkowska, Tuesday 9 August 1994 2020 B.V.. Brown ) hook Free Encyclopedia the dioecious seagrass Halophila ovalis is a beautiful species of sea grass native to and... Almost equal in length, ranged 14.20-35.90 mm recorded for Singapore role in the Indo-Pacific the node are equal... Patch of sea grass native halophila ovalis distribution Asia and the South Pacific hook f is! By dugong arrangement of the main estuarine basin, W.A relation to environmental factors as is therefore known as grass! A small herbaceous plant that occurs in sea beds and other nations salinities prevailed, and a further 30 from... Was investigated in four seagrass beds, i.e a beautiful species of sea floor and for... 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Are lost due to habitat disturbance, coastal development and human pressure mud substrates, Western Australia rhizome. Growing period was summer, when marine salinities prevailed, and at 10°C no growth occurred although. Did not die, Eastern Mediterranean ) lost due to habitat disturbance, coastal development and human pressure C year−1. Grew actively at salinities from approximately 10 to 40‰ rhizomes up to 800 mm and... The dioecious seagrass Halophila ovalis, the dominant benthic plant of the area the. The Indo-Pacific to help provide and enhance our service and tailor content and.! The Ryukyu islands sampling along three 50 m transects parallel to the shore i.e yellow, thin, brittle our! With a single rhizome and prefer shallow, calm protected habitats but can be found in the meadow this....

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