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...
Hierarchy of the factors influencing the broad-scale waterbirds functional diversity gradients in temperate ChinaYamian 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...
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...
Data from: Conserving the genetic diversity of condemned populations: optimizing collections and translocationJason 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...
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...
Double-tagging scores of seabirds reveals that light-level geolocator accuracy is limited by species idiosyncrasies and equatorial solar profilesLuke 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...
Single species acute lethal toxicity tests are not predictive of relative population, community and ecosystem effects of two salinity typesBen 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 wetlandsYuyu 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...
Poor quality monitoring data underestimate the impact of Australia’s megafires on a critically endangered songbirdRoss 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...
Department of Planning and Environment9
Beijing Forestry University2
NSW Department of Planning, Industry and Environment1
Centro de Estudos em Geografia e Ordenamento do Territorio1
Northern Illinois University1
Australian National University1
University of Melbourne1