1b14bbd2-3f29-4e40-8427-33391174f586 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-23T07:48:13 creation ISO 19115 2016 Halimeda composition and biomass along the Great Barrier Reef 1b14bbd2-3f29-4e40-8427-33391174f586 Inter-reefal Halimeda communities from the far north to southern sections of the Great Barrier Reef were sampled: 1013 Van Veen grab samples from 281 stations, and 76 biomass samples collected by scuba divers from 12 stations. Halimeda, Udotea and Penicillus plants were air-dried, sorted into species, oven-dried and weighed. Organic content was calculated from weight loss after overnight combustion in a muffle furnace.Halimeda communities were differentiated as meadow, mound, and shoal. Species compostion variables were: location, % (of calcareous green algae); where found (within/outside meadows); other plant macrobiota was also recorded.Variables on biomass were: station location and number of samples; means of collection (grab, diver); area (m2); depth (shallow, Other algal species: Caulerpa brachypus, C. cupressoides, C. Mexicana, C. peltata, C. racemosa; Chaetomorpha spp.; Halophila decipiens, H. ovalis, H. spinulosa; Lobophora variegata; Monostroma spp.; Penicillus nodulosus; Struvea elegans; Tydemania expeditionis; Udotea flabellum, U. argentum; Vidalia spp.Locations: Far North section (Blackwood Channel, Creech Reef, Great Detached Reef, Hibernia Entrance, Pandora Reef, Quoin Island Entrance, Second 3-mile Opening, Waterwitch Entrance); Northern section (Lizard Island, Ribbon Reefs); Central section (Bowl Reef); Southern section (Swains reefs).Complements a study of Halimeda on reefs across the central Great Barrier Reef, see separate metadata record. {"type": "Polygon", "coordinates": [[[143.5, -21.025], [152.7, -21.025], [152.7, -11.75], [143.5, -11.75], [143.5, -21.025]]]} 143.5 152.7 -21.025 -11.75 Studies on Halimeda. I. The distribution and species composition of Halimeda meadows throughout the Great Barrier Reef province: Drew EA and Abel KM (1988) Studies on Halimeda. I. The distribution and species composition of Halimeda meadows throughout the Great Barrier Reef province. Coral Reefs 6: 195-205. documentDigital Studies on Halimeda. I. The distribution and species composition of Halimeda meadows throughout the Great Barrier Reef province: Drew EA and Abel KM (1988) Studies on Halimeda. I. The distribution and species composition of Halimeda meadows throughout the Great Barrier Reef province. Coral Reefs 6: 195-205. Growth of Halimeda in reefal and inter-reefal environments: Drew EA and Abel KM (1983) Growth of Halimeda in reefal and inter-reefal environments. pp. 299-304. In: Baker JT, Carter RM, Sammarco PW and Stark KP (eds) Proceedings: Inaugural Great Barrier Reef Conference, Townsville Aug 28 - Sept 2, 1983. James Cook University Press. documentDigital Growth of Halimeda in reefal and inter-reefal environments: Drew EA and Abel KM (1983) Growth of Halimeda in reefal and inter-reefal environments. pp. 299-304. In: Baker JT, Carter RM, Sammarco PW and Stark KP (eds) Proceedings: Inaugural Great Barrier Reef Conference, Townsville Aug 28 - Sept 2, 1983. James Cook University Press. AIMS Web Site documentDigital audio/basic AIMS Web Site documentDigital audio/basic AIMS Web Site documentDigital audio/basic AIMS Web Site documentDigital audio/basic Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML