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  • Tidal wetlands are vulnerable to accelerated rates of sea-level rise projected by climate models. The Surface Elevation Table (SET) is a technique applied globally to assess the extent of vertical adjustment of tidal wetlands to sea-level rise over decadal timescales. This record describes the SET data from the Australian network (OzSET). This data can be used for analyzing wetlands elevation change at the study sites

  • NOTE THIS IS AN ARCHIVED VERSION OF THE GLOBAL FISHERIES LANDING DATA AND MAY BE INCOMPLETE. The current version of the data is available from and should be used for all future analyses from 16/01/2019. For any questions about version changes to this dataset, please contact the Point of Contact nominated in this record. Global fisheries landings supplied by a number of agencies (FAO/UN, CCAMLR, NAFO, ICES etc) are mapped to 30-min spatial cells based on the range/gradient of the reported taxon, the spatial access of the reporting country's fleets, and the original reporting area. This data is associated with types of fishing gears. Estimates of illegal, unreported and unallocated landings are included as are estimates of the weight of fisheries products discarded at sea. Mapping the source of fisheries capture allows investigation of the impacts of fishing and the vulnerability of fishing (with its associate food security implications) to climate change impacts.

  • Most research investigating how ocean warming and acidification will impact marine species has focused on visually dominant species, such as kelps and corals, while ignoring visually cryptic species such as crustose coralline algae (CCA). CCA are important keystone species that provide settlement cues for invertebrate larvae and can be highly sensitive to global ocean change. However, few studies have assessed how CCA respond to low emission scenarios or conditions. In a laboratory experiment, we examined the responses of temperate CCA assemblages to combined warming and acidification projected under low, medium, and high emissions. Net calcification and net photosynthesis significantly declined in all emissions scenarios, while significant reductions in relative growth rates and increases in percentage bleaching were observed in the highest emission scenario. The negative responses of CCA to both low and medium emissions suggest that they may be adversely impacted by combined warming and acidification by 2030 if current emissions are sustained. This will have far reaching consequences for commercially important invertebrates that rely on them to induce settlement of larvae. These findings highlight the need to take rapid action to preserve these critical keystone species and the valuable services they provide.

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    Annotations of Centrostephanus rogersii sea urchin barrens derived from towed video at selected key abalone blocks along the east coast of Tasmania. The purpose of the study was to examine the patch dynamics of urchin barrens and to provide validation for the identification of urchin barrens from multibeam surveys.

  • This record provides an overview of the scope and research output of NESP Marine Biodiversity Hub Project A12 - "Scoping a seascape approach to managing and recovering Northern Australian threatened and migratory marine species". For specific data outputs from this project, please see child records associated with this metadata. -------------------- Northern Australia is the current focus of substantial economic development, which has the potential to impact biodiversity and cultural values. The Northern Seascape scoping project will assess the status of knowledge of EPBC-listed Threatened and Migratory Marine species, and pressures, Indigenous priorities, habitats, fisheries bycatch, and EPBC referrals in relation to them across the North Marine Bioregion (coast to EEZ edge). The focus will be at the multiple taxa level, including elasmobranchs, shorebirds, turtles and cetaceans. The project will scope research needs and directions for a broad Northern Seascape project (2018–2020), by identifying future research hotspots. Planned Outputs • Maps of Threatened and Migratory Marine species occurrence and habitats, and a gap analysis of research and data needs • Maps of state and trends in pressures and Threatened and Migratory Marine species, and the intersection between them • A report on Indigenous marine research and management priorities for Threatened and Migratory Marine species • Maps and time-series graphs that depict the extent and timing of past changes in coastal habitats that are important for TMM species • Identification of Threatened and Migratory Marine species bycatch and bycatch mitigation research priorities • Identification of EPBC referral spatial and species trends • Data, data visualisation and summaries available online through an appropriate web-based portal and/or existing internal DoEE information products • Project report synthesizing northern Australian Threatened and Migratory Marine species, pressures, Indigenous priorities, coastal habitat change, fisheries bycatch mitigation research priorities, and EPBC referral trends, and the identification of future research hotspots

  • White sharks are listed as vulnerable under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 and actions to assist their recovery and long-term viability are prescribed in a national recovery plan for the species. A priority action is to develop an effective means of estimating the size of white shark populations and monitor their status (population trend). This would provide a scientific basis for assessing recovery actions, and for local policies governing human-shark interactions: an issue of significant public concern. NESP Project A3 provides a national assessment of the southern-western adult white shark population abundance and an update of the total eastern Australasian white shark population abundance and status in order to establish the efficacy of existing recovery actions and provide a scientifically sound and rational basis from which to inform policies that aim to balance conservation objectives and public safety. This record describes white shark distribution and movement through the use of acoustic and electronic tags fitted to approx. 70 animals. Tag detection data are continually uploaded to the IMOS Animal Tracking Facility (ATF) database. This data collection has been granted Protected Species Status and access to the data is currently restricted. Refer to the Point of Contact listed in this record for further information regarding access to data.

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    Sixty animals were collected from each of Bass Pt, New South Wales (lat 34°35' S, long 150°54' E; August 2000); south side of East Cove, Deal Is, Bass St. (lat 39°28.4' S, long 147°18.4' E; June 2000) and Fortescue Bay, Tasmania (lat 43°8.5' S, long 148°0.0' E; October 2000 and April 2001). To examine the genetic relationship between the three site populations of Centrostephanus rodgersii, allelic diversity and heterozygosity among the three sites was compared using BIOSYS.

  • This study reports on previously undescribed predation on Asterias amurensis in the Derwent Estuary, Tasmania by the spider crab Leptomithrax gaimardii (Milne Edwards). Specifically, this study describes the predatory interaction between the spider crab and A. amurensis and quantifies patterns of sub-lethal injuries inflicted on the seastar during a localised aggregation of the spider crab.

  • This record provides an overview of the NESP Marine and Coastal Hub emerging priorities study - "Application of environmental DNA to survey Bathurst Harbour Tasmania for the endangered Maugean skate". For specific data outputs from this project, please see child records associated with this metadata. -------------------- This study will use Environmental (e) DNA to determine the presence/absence of the endangered Maugean skate (Zearaja maugeana) in Bathurst Harbour, Tasmania. Zearaja maugeana is classified as endangered based on its small population (~ 3000 individuals, Macquarie Harbour, Tasmania, 2016) and restricted distribution (Bathurst and Macquarie Harbours). Initially discovered in Bathurst Harbour in 1988, it has not been recorded there since 1992. Additionally, recent research suggests that the Macquarie Harbour population may be declining. As such, there is an urgent need to determine the current status of the Bathurst Harbour population. This research will address this need. Outputs • Maugean skate eDNA sampling data and inferred species distribution (presence/absence) [dataset] • Final technical report with analysed data, including a short summary of recommendations for policy makers of key findings [written]

  • This study assessed the spatial and temporal (horizontal and vertical) distribution of Asterias amurensis larvae in the Derwent Estuary and adjacent Storm Bay, SE Tasmania. Horizontal transport and development was assessed by collecting plankton samples at 2 or 4 week intervals, from July to December 2001, at 4 sites in the Derwent Estuary and 6 sites in Storm Bay. The effects of light and salinity on vertical distribution of larvae was examined over a 24 hour tidal and diel cycle.