https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Coral host physiology and symbiont dynamics associated with differential recovery from mass bleaching in an extreme, macro-tidal reef environment in northwest Australia https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46275 Tue 15 Nov 2022 08:10:33 AEDT ]]> Development of a multi-assay approach for monitoring coral diversity using eDNA metabarcoding https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45906 Tue 08 Nov 2022 09:18:09 AEDT ]]> Putting sea cucumbers on the map: projected holothurian bioturbation rates on a coral reef scale https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39513 2 Heron Island Reef in Queensland, Australia. Ex situ bioturbation rates of the most abundant holothurian, Holothuria atra, were assessed during 24-h feeding experiments. Using density measurements of holothurians across reef flat zones in a 27,000 m2 map produced from drone imagery, we extrapolated bioturbation across the reef using satellite remote sensing data. Individual H. atra were estimated to produce approximately 14 kg of bioturbated sediment per year. On a reef scale (excluding the reef lagoon) and accounting for varying densities of holothurians across different reef zones, total bioturbation from holothurians at Heron Reef was estimated at over 64,000 metric tonnes per year, slightly more than the mass of five Eiffel Towers. These results highlight the scale of structural and biochemical impacts that holothurians have on reef flats and their importance to ecosystem functioning and services. Management of these animals on reefs is imperative as overharvesting would likely cause substantial negative effects on sedimentary ecosystems and their biogeochemistry in corals reefs.]]> Fri 10 Jun 2022 15:42:34 AEST ]]> Multiple techniques point to oxygenic phototrophs dominating the Isopora palifera skeletal microbiome https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39320 Isopora palifera, one of the most common reef builders of the Great Barrier Reef. While a previous study suggested that the Isopora skeleton was dominated by anoxygenic phototrophs, our data show an abundance of chlorophyll a, highlighting the presence of oxygenic photosynthetic endolithic microbes. Proteobacteria, Bacteriodetes, Actinobacteria and Spirochaetes were consistently found, and the bacterial community was similar in shallow and deeper skeletal micro-samples. The micro-eukaryotic community was dominated by endolithic green algae, and the protist Labyrynthula, found at previously unreported high relative abundance.]]> Fri 03 Jun 2022 15:35:23 AEST ]]>