14 Works

Data from: Scope for genetic rescue of an endangered subspecies though re-establishing natural gene flow with another subspecies

Katherine A. Harrisson, Alexandra Pavlova, Anders Gonçalves Da Silva, Rebecca Rose, James K. Bull, Melanie L. Lancaster, Neil Murray, Bruce Quin, Peter Menkhorst, Michael J. Magrath, Paul Sunnucks & Michael J. L. Magrath
Genetic diversity is positively linked to the viability and evolutionary potential of species but is often compromised in threatened taxa. Genetic rescue by gene flow from a more diverse or differentiated source population of the same species can be an effective strategy for alleviating inbreeding depression and boosting evolutionary potential. The helmeted honeyeater Lichenostomus melanops cassidix is a critically endangered subspecies of the common yellow-tufted honeyeater. Cassidix has declined to a single wild population of...

Responding to the biodiversity impacts of a megafire: a case study from south-eastern Australia’s Black Summer

William Geary, Anne Buchan, Teigan Allen, David Attard, Matthew Bruce, Luke Collins, Tiarne Ecker, Thomas Fairman, Tracey Holliings, Ella Loeffler, Angela Muscatello, David Parkes, James Thomson, Matt White & Ella Kelly
Aim: Megafires are increasing in intensity and frequency globally. The impacts of megafires on biodiversity can be severe, so conservation managers must be able to respond rapidly to quantify their impacts, initiate recovery efforts and consider conservation options within and beyond the burned extent. We outline a framework that can be used to guide conservation responses to megafires, using the 1.5 million hectare 2019/2020 megafires in Victoria, Australia, as a case study. Location: Victoria, Australia....

Data from: Genetic diversity and population structure of the threatened freshwater catfish, Tandanus tandanus, in Victoria, Australia

Erin Hill, Brett A. Ingram, Meaghan Rourke, John Mitchell & Jan M. Strugnell
In Australia, many species of freshwater fish have rapidly declined following European settlement in the late eighteenth century. The freshwater catfish (Tandanus tandanus) is listed as threatened in Victoria and accordingly, broodstock management and a captive breeding program to facilitate the reintroduction of hatchery bred fish into depleted populations have been suggested. Little work has been conducted on Victorian populations of T. tandanus, despite its threatened status. This study assessed the genetic diversity and genetic...

Far Eastern Curlew and Whimbrel prefer flying low: wind support and good visibility appear only secondary factors in determining migratory flight altitude

Batbayar Galtbalt, Amanda Lilleyman, Jonathan T Coleman, Chuyu Cheng, Zhijun Ma, Danny I Rogers, Bradley K Woodworth, Richard A Fuller, Stephen T Garnett & Marcel Klaassen
Background: In-flight conditions are hypothesized to influence the timing and success of long-distance migration. Wind assistance and thermal uplift are thought to reduce the energetic costs of flight, humidity, air pressure and temperature may affect the migrants’ water balance, and clouds may impede navigation. Recent advances in animal-borne long-distance tracking enable evaluating the importance of these factors in determining animals’ flight altitude. Methods: Here we determine the effects of wind, humidity, temperature, cloud cover, and...

High fire frequency and the impact of the 2019–2020 megafires on Australian plant diversity

Rachael Gallagher, Stuart Allen, Berin MacKenzie, Colin Yates, Gosper Carl, David Keith, Cory Merow, Matthew White, Elizabeth Wenk, Brian Maitner, Kang He, Vanessa Adams, Tony Auld, Rachael V. Gallagher, Berin D. E. Mackenzie, Colin J. Yates, Carl R. Gosper, David A. Keith, Matthew D. White, Brian S. Maitner, Vanessa M. Adams & Tony D. Auld
This dataset details the proportion of the geographic range of 26,062 Australian plant species burnt in the 2019-2020 megafire; threatened listing status on state and Commonwealth threatened species legislation; species endemic status in each state/territory according to the Australian Plant Census; and risk ranking for exposure to high fire frequency (short intervals between fires) and cumulative impacts of fire (populations dominated by immature individuals). Further details are provided in the users should consult and cite...

Data from: Combining optimization and simulation modelling to measure the cumulative impacts of prescribed fire and wildfire on vegetation species diversity

Matthew P. Chick, Alan York, Holly Sitters, Julian Di Stefano & Craig R. Nitschke
1. Growth-stage optimisation (GSO) offers a new approach to biodiversity conservation in fire-prone regions through estimating the optimal distribution of vegetation growth stages that maximises a species diversity index. This optimal growth-stage structure provides managers an operational goal explicitly linked to a positive conservation outcome but does not define the fire regime needed to achieve it. 2. We paired GSO with LANDIS II, a landscape succession and disturbance simulation model, to (1) estimate the optimal...

Data from: Genomic selection for recovery of original genetic background from hybrids of endangered and common breeds

Carmen Amador, Ben J. Hayes & Hans D. Daetwyler
Critically endangered breeds and populations are often crossed with more common breeds or subspecies. This results in genetic admixture that can be undesirable when it challenges the genetic integrity of wild and domestic populations, causing a loss in special characteristics or unique genetic material and ultimately extinction. Here, we present two genomic selection strategies, using genome-wide DNA markers, to recover the genomic content of the original endangered population from admixtures. Each strategy relies on the...

Data from: High-throughput genotyping for species identification and diversity assessment in germplasm collections

Annaliese S. Mason, Jing Zhang, Reece Tollenaere, Paula Vasquez Teuber, Jessica Dalton-Morgan, Liyong Hu, Guijun Yan, David Edwards, Robert Redden & Jacqueline Batley
Germplasm collections provide an extremely valuable resource for breeders and researchers. However, misclassification of accessions by species often hinders the effective use of these collections. We propose that use of high-throughput genotyping tools can provide a fast, efficient and cost-effective way of confirming species in germplasm collections, as well as providing valuable genetic diversity data. We genotyped 180 Brassicaceae samples sourced from the Australian Grains Genebank across the recently released Illumina Infinium Brassica 60K SNP...

A genetically isolated dingo population in western Victoria, Australia, reveals greater structuring of the Australian dingo

Danielle Stephens, Peter J.S. Fleming, Emma Sawyers & Tim P. Mayr
The Australian dingo is a relatively recent anthropogenic addition to the Australian fauna, which spread rapidly across the continent and has since widely interbred with modern dogs. Genetic studies of dingoes have given rise to speculation about their entry to the continent and subsequent biogeographic effects, but few studies of their contemporary population structure have been conducted. Here we investigated the dingo ancestry and population structure of free-living dogs in western Victoria and contrasted it...

Data from: Functional responses of an apex predator and a mesopredator to an invading ungulate: Dingoes, red foxes and sambar deer in south-east Australia

David M. Forsyth, Peter Caley, Naomi E. Davis, A. David M. Latham, Andrew P. Woolnough, Luke P. Woodford, Kasey A. Stamation, Paul D. Moloney & Charlie Pascoe
Biological invasions by large herbivores involve the establishment of novel interactions with the receiving mammalian carnivore community, but understanding these interactions is difficult due to the large spatiotemporal scales at which such dynamics would occur. We quantified the functional responses of a native apex predator (the dingo (Canis familiaris), which includes wild dogs and their hybrids) and a non-native mesopredator (red fox; Vulpes vulpes) to an invading non-native ungulate (sambar deer; Cervus unicolor) in Australia....

Data from: Artificial barriers prevent genetic recovery of small isolated populations of a low-mobility freshwater fish

Rhys A. Coleman, Bertrand Gauffre, Alexandra Pavlova, Luciano B. Beheregaray, Joanne Kearns, Jarod Lyon, Minami Sasaki, Raphael Leblois, Carla Sgro & Paul Sunnucks
Habitat loss and fragmentation often result in small, isolated populations vulnerable to environmental disturbance and loss of genetic diversity. Low genetic diversity can increase extinction risk of small populations by elevating inbreeding and inbreeding depression, and reducing adaptive potential. Due to their linear nature and extensive use by humans, freshwater ecosystems are especially vulnerable to habitat loss and fragmentation. Although the effects of fragmentation on genetic structure have been extensively studied in migratory fish, they...

Data from: Interactions between rainfall, fire and herbivory drive resprouter vital rates in a semi-arid ecosystem

Katherine M. Giljohann, Michael A. McCarthy, David A. Keith, Luke T. Kelly, Mark G. Tozer & Tracey J. Regan
1. Global change is threatening ecosystems and biodiversity worldwide, creating a pressing need to understand how climate and disturbance regimes interact and influence the persistence of species. We quantify how three ecosystem drivers– rainfall, fire and herbivory – influence vital rates in the perennial resprouting graminoid, Triodia scariosa, a foundation species of semi-arid Australia. 2. We used an 11 year data set from a fire and herbivore exclosure experiment, to model flowering, post-fire recruitment and...

Data from: Integrated species distribution models: combining presence-background data and site-occupany data with imperfect detection

Vira Koshkina, Yan Wang, Ascelin Gordon, Robert M. Dorazio, Matt White & Lewi Stone
Two main sources of data for species distribution models (SDMs) are site-occupancy (SO) data from planned surveys, and presence-background (PB) data from opportunistic surveys and other sources. SO surveys give high quality data about presences and absences of the species in a particular area. However, due to their high cost, they often cover a smaller area relative to PB data, and are usually not representative of the geographic range of a species. In contrast, PB...

Data from: Density-dependent effects of a widespread invasive herbivore on tree survival and biomass during reforestation

David M. Forsyth, Michael P. Scroggie, Anthony D. Arthur, Michael Lindeman, David S. L. Ramsey, Steven R. McPhee, Tim Bloomfield & Ivor G. Stuart
Reforestation has been widely adopted as a solution to multiple global change issues. However, the role of herbivory by invasive species in the restoration of grassland to forest has received little attention. We conducted a field experiment to investigate the impacts of a widespread invasive mammalian herbivore, the European rabbit (Oryctolagus cuniculus), on trees planted in a landscape-scale reforestation program in south-eastern Australia. Three native tree species were planted inside and outside rabbit-proof exclosures within...

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