https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51013 Wed 16 Aug 2023 09:06:40 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:17158 Wed 11 Apr 2018 16:17:52 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35528 Macrozamia flexuosa (Zamiaceae), a rare cycad endemic to the Hunter Region of New South Wales. Spatial analysis of all records (n=588) showed that the species is most prevalent on Permian-aged sediments but also occurs on older Carboniferous sediments and younger Triassic Narrabeen and Quaternary substrates. Point records intersect with a wide range of annual average rainfall bands (<700 to 1400 mm/yr), suggesting either that the species is tolerant of a variety of soil moisture gradients, or that current distribution may be representative of a differing climatic environment. Interpolation of database records (n=397) across 175,000 hectares of high-resolution vegetation mapping showed Macrozamia flexuosa to most frequently occur within the Lower Hunter Spotted Gum-Ironbark Forest (41%), followed by Kurri Sands Swamp Woodland (16%), Coastal Foothills Spotted Gum-Ironbark Forest (15%) and Coastal Plains Smooth-barked Apple Woodland (13%). Numerical analysis of full floristic plot data (n=86) largely supported these results, with the addition of Hunter Valley Moist Forest to these four regional communities. A revised assessment of the conservation significance of Macrozamia flexuosa suggests that the existing conservation risk code of 2K be amended to 3RCa (distributional range >100km; rare but not immediately threatened; adequately conserved in at least 14 conservation reserves). An extent of occurrence of 6,319 km² and an area of occupancy of 696 km² have been determined for the species, and an estimated population size of between 1,740,000 and 43,500,000 individuals has been calculated. Under IUCN threat criteria, a code of NT (Near Threatened) is here considered appropriate for Macrozamia flexuosa, recognising uncertainties applicable to the assessment of Criteria A and B. It is noted, however, that Macrozamia flexuosa may currently be in slow decline due to as yet unknown limitations in flowering, pollination and/or dispersal mechanisms over a long period of time (many decades), with the longevity of individual specimens confounding any observable trends. A lack of demographic data relevant to these life traits limits comprehensive assessment, and further research to address these data gaps is recommended.]]> Tue 20 Aug 2019 17:21:41 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44300 Tue 11 Oct 2022 16:05:32 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54131 35 cm diameter at breast height (DBH), and to appropriately revegetate land with these criteria in mind.]]> Tue 06 Feb 2024 11:36:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50494 40% contribution) for three resident and five transient species, including polychaetes, blue swimmer crabs, toadfish, luderick, leatherjackets, oyster gobies, and stingarees. Benthic organic matter from the oyster reef was found to be a primary resource for 12 residents and four transient species, including crabs, shrimps, gastropods, and fish. Oyster reefs are key foraging grounds in the estuarine seascape, and their restoration will enhance fisheries productivity by broadening the trophic resource base and contribute to the estuarine energy transfer to higher trophic levels.]]> Thu 27 Jul 2023 10:15:39 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49331 Thu 11 May 2023 15:21:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42705 Thu 01 Sep 2022 09:55:19 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:1429 Sat 24 Mar 2018 08:28:03 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:1431 Sat 24 Mar 2018 08:28:02 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:25976 Sat 24 Mar 2018 07:37:02 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26808 Sat 24 Mar 2018 07:36:28 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53865 Fri 19 Jan 2024 12:32:01 AEDT ]]>