12 Works

Evolutionary processes in an undescribed eucalypt: implications for the translocation of a critically endangered species

Susan Rutherford, Trevor C Wilson, Jia-Yee Samantha Yap, Enhua Lee, Graeme Errington & Maurizio Rossetto
Background and Aims Knowledge of the evolutionary processes responsible for the distribution of threatened and highly localised species is important for their conservation. Population genomics can provide insights into evolutionary processes to inform management practices, including the translocation of threatened plant species. In this study, we focus on a critically endangered eucalypt, Eucalyptus sp. Cattai, which is restricted to a 40 km 2 area of Sydney, Australia and is threatened by increased urbanisation. Eucalyptus sp....

Poor quality monitoring data underestimate the impact of Australia’s megafires on a critically endangered songbird

Ross Crates, Laura Rayner, Dejan Stojanovic, Ben Scheele, Jason Mackenzie, Adam Ross & Robert Heinsohn
Aim: Catastrophic events such as south-eastern Australia’s 2019/20 megafires are predicted to increase in frequency and severity under climate change. Rapid, well-informed conservation prioritisation will become increasingly crucial for minimising biodiversity losses resulting from megafires. However, such assessments are susceptible to bias, because the quality of monitoring data underpinning knowledge of species’ distributions is highly variable and they fail to account for differences in life-history traits such as aggregative breeding. We aimed to assess how...

Single species acute lethal toxicity tests are not predictive of relative population, community and ecosystem effects of two salinity types

Ben Kefford, Ross Hyne, Andrew Brooks, Jonathan Bray, Mark Shenton, Kasey Hills & Susan Nichols
Human mediated salinity increases are occurring in freshwaters globally, with consequent negative effects on freshwater biodiversity. Salinity comprises multiple anions and cations. While total concentrations are typically used to infer effects, individual ion concentrations and ion ratios are critical in determining effects. Moreover, estimates of toxicity from single species laboratory tests, may not accurately predict relative effects on populations, communities and ecosystems. Here we compare salinity increases from synthetic marine salts (SMS) and sodium bicarbonate...

Habitat alteration facilitates the dominance of invasive species through disrupting niche partitioning in floodplain wetlands

Yuyu Wang, Wenzhuo Tan, Bin Li, Li Wen & Guangchun Lei
Aim: Exotic species invasion often leads to declines in local and regional biodiversity, particularly in freshwater ecosystems. This biodiversity loss is generally facilitated by human activities such as land cover change and hydrological alternation. Recent advances in stable isotope analysis (SIA) have been highlighted in many studies addressing fundamental issues in invasion ecology, especially in quantifying competition for resources between native and exotic species. However, how anthropogenic disturbance influences trophic relationships among invasive and native...

Data and code for: No evidence of metabolic costs following adaptive immune activation or reactivation in house sparrows

Bethany Hoye, William Buttemer, Terance O'Dwyer, Lee Astheimer & Kirk Klasing
We examined the energetic costs of immune activation by measuring both basal (BMR) and exercise-induced maximal metabolic rates (MMR) in house sparrows before and after being injected with either saline (sham) or two novel antigens (keyhole limpet haemocyanin and sheep red blood cells; KLH and SRBC, respectively) after the primary and two subsequent vaccinations. We also examined the effect of experimentally-induced breeding levels of testosterone (T) on immune responses and their metabolic costs in both...

Arthropod predation of vertebrates structures trophic dynamics in island ecosystems

Luke Halpin, Daniel Terrington, Holly Jones, Rowan Mott, Wei Wen Wong, David Dow, Nicholas Carlile & Rohan Clarke
Arthropod predation of vertebrates structures trophic dynamics in island ecosystems On isolated islands, large arthropods can play an important functional role in ecosystem dynamics. On the Norfolk Islands group, South Pacific, we monitored the diet and foraging activity of an endemic chilopod, the Phillip Island centipede (Cormocephalus coynei), and used a stable isotope mixing model to estimate dietary proportions. Phillip Island centipede diet is represented by vertebrate animals (48%) and invertebrates (52%), with 30.5% consisting...

Hierarchy of the factors influencing the broad-scale waterbirds functional diversity gradients in temperate China

Yamian Zhang, Wenzhuo Tan, Li Wen, Qing Zeng, Haitao Tan, Yifei Jia & Guangchun Lei
Geographical gradients in species diversity have long fascinated biogeographers and ecologists. However, the extent and generality of the positive/negative effects of the important factors governing functional diversity (FD) patterns are still debated, especially for the freshwater domain. We examined lake productivity and functional richness (FRic) of waterbirds sampled from 35 lakes and reservoirs in northern China with a geographic coverage of over 5 million km2. We used structural equation modelling (SEM) to explore the causal...

Livestock and kangaroo grazing have little effect on biomass and fuel hazard in semi-arid woodlands

Samantha Travers, David Eldridge, Terry Koen, James Val & Ian Oliver
Using livestock grazing as a tool to manage biomass and reduce fuel hazard has gained widespread popularity, but examples from across the globe demonstrate that it often yields mixed, context-dependent results. Grazing has potential to deliver practical solutions in systems where grazing reduces not only biomass but also reduces fuel hazard by altering vegetation connectivity or composition. We assessed the extent to which recent rainfall, rabbit and kangaroo grazing and recent and historic livestock grazing...

A turn in species conservation for hairpin banksias: Demonstration of oversplitting leads to a better management of diversity

Trevor Wilson, Maurizio Rosetto, David Bain, Jia-Yee Yap, Peter Wilson, Margaret Stimpson, Peter Weston & Larry Croft
We generated SNP genotype data and chloroplast genomic data to test the current taxonomy and infer a population-scale evolutionary scenario for the Hairpin Banksias (B. collina, B. cunninghamii, B. neoanglica, B. spinulosa and B. vincentia) and outgroups using a sample-set comprehensive in its representation of morphological diversity and a two-and-a-half thousand kilometer distribution. Here, we provide an archive of these SNP genotype and chloroplast sequence alignment data.

Data from: Conserving the genetic diversity of condemned populations: optimizing collections and translocation

Jason Bragg, Jia-Yee Yap, Trevor Wilson, Enhua Lee & Maurizio Rossetto
We generated SNP genotype data from two endangered plant species, Pimelea spicata and Eucalyptus sp. Cattai. For each, we genotyped plants from a population that was 'condemned,' or that would soon be destoyed. We used the genotype data to design ex situ germplasm collections that preserved the diversity in the condemned populations, in ways that were optimized. Here, we provide an archive of these SNP genotype data, and the code that was used to analyse...

Double-tagging scores of seabirds reveals that light-level geolocator accuracy is limited by species idiosyncrasies and equatorial solar profiles

Luke Halpin, Jeremy Ross, Raül Ramos, Rowan Mott, Nicholas Carlile, Nick Golding, José Manuel Reyes-González, Teresa Militão, Fernanda De Felipe, Zuzana Zajková, Marta Cruz Flores, Sarah Saldanha, Virginia Morera-Pujol, Leia Navarro-Herrero, Laura Zango, Jacob Gonzalez-Solis & Rohan Clarke
Light-level geolocators are popular bio-logging tools, with advantageous sizes, longevity, and affordability. Biologists tracking seabirds often presume geolocator spatial accuracies between 186-202 km from previously-innovative, yet taxonomically, spatially, and computationally limited, studies. Using recently developed methods, we investigated whether assumed uncertainty norms held across a larger-scale, multispecies study. We field-tested geolocator spatial accuracy by synchronously deploying these with GPS loggers on scores of seabirds across five species and 11 Mediterranean Sea, East Atlantic and South...

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...

Registration Year

  • 2022
    3
  • 2021
    8
  • 2020
    1

Resource Types

  • Dataset
    12

Affiliations

  • Department of Planning and Environment
    11
  • Royal Botanic Garden Sydney
    3
  • NSW Department of Planning, Industry and Environment
    2
  • Monash University
    2
  • UNSW Sydney
    2
  • Beijing Forestry University
    2
  • University of Wollongong
    1
  • Centro de Estudos em Geografia e Ordenamento do Territorio
    1
  • Northern Illinois University
    1
  • Australian National University
    1