Negative human-wildlife interactions can be better managed by early detection of the wildlife species involved. However, many animals that pose a threat to humans are highly cryptic and detecting their presence before the interaction occurs can be challenging. Here we describe a method whereby the presence of a dangerous animal, the estuarine crocodile (Crocodylus porosus) was detected using traces of DNA shed into the water, known as environmental DNA (eDNA). The estuarine crocodile is present...
Data from: A study of bacteria adhesion and microbial corrosion on different stainless steels in environment containing Desulfovibrio vulgaris manuscriptTien Tran Thi Thuy
Stainless steel is an important material used in many applications due to its mechanical strength and corrosion resistant properties. The high corrosion resistance of stainless steel is provided by the passive film. Different stainless steels have different alloy elements and surface properties which could have a significant influence on bacterial attachment to the surface and thus might result in different microbial corrosion behaviours. In this study, the effect of adhesion of sulphate reducing bacteria (SRB)...
Data from: Identifying error and accurately interpreting eDNA metabarcoding results: a case study to detect vertebrates at arid zone waterholesElise M. Furlan, Jenny Davis & Richard P. Duncan
Environmental DNA (eDNA) metabarcoding surveys enable rapid, non-invasive identification of taxa from trace samples with wide-ranging applications from characterising local biodiversity to identifying food-web interactions. However, the technique is prone to error from two major sources: i) contamination through foreign DNA entering the workflow, and ii) misidentification of DNA within the workflow. Both types of error have the potential to obscure true taxon presence or to increase taxonomic richness by incorrectly identifying taxa as present...
R code, spatial and tabular data to fully reproduce STEPS simulations of population change for common brushtail possum, grassland melomys and northern brown bandicoot in northern AustraliaCasey Visintin & Hugh Davies
The development of effective fire management for biodiversity conservation is a global challenge. The highly dynamic nature of fire, the difficulty in replicating ‘real-world’ fire experiments, and the need to understand population changes at large spatiotemporal scales make computer simulations particularly useful for identifying optimal fire management regimes for biodiversity conservation. We aimed to develop a flexible modelling approach with which to investigate how the spatiotemporal application of fire (i.e. management scenarios) influences savanna biodiversity....
Data from: Plant protection services mediated by extrafloral nectaries decline with aridity but are not influenced by chronic anthropogenic disturbance in Brazilian CaatingaFernanda Oliveira, Talita Câmara, José Israel Durval, Caroline Oliveira, Xavier Arnan, Alan Andersen, Elâine Dos Santos Ribeiro & Inara Leal
1. Most terrestrial species occur in human-modified landscapes that are experiencing climate change. In addition to direct impacts on species, both anthropogenic disturbance and climate change can have important effects through changes in species interactions, including the disruption of ecological services provided by them. 2. Here we investigate how chronic anthropogenic disturbance (CAD) and aridity affect the effectiveness of plant protection services provided by ants to plants bearing extrafloral nectaries (EFNs). 3. The study was...
Data from: One panel to rule them all: DArTcap genotyping for population structure, historical demography, and kinship analyses, and its application to a threatened sharkPierre Feutry, Floriaan Devloo-Delva, Adrien Tran Lu Y, Stefano Mona, Rasanthi Gunasekera, Grant Johnson, Richard Pillans, Damian Jaccoud, Andrzej Kilian, David Morgan, Thor Saunders, Nicholas Bax & Peter Kyne
With recent advances in sequencing technology, genomic data are changing how important conservation management decisions are made. Applications such as Close-Kin Mark-Recapture demand large amounts of data to estimate population size and structure, and their full potential can only be realised through ongoing improvements in genotyping strategies. Here we introduce DArTcap, a cost-efficient method that combines DArTseq and sequence capture, and illustrate its use in a high resolution population analysis of Glyphis garricki, a rare,...
Aim: We propose that forest trees create a vertical dimension for ecological niche variation that generates different regimes of climatic exposure, which in turn drives species elevation distributions. We test this hypothesis by statistically modelling the vertical and elevation distributions and microclimate exposure of rainforest ants. Location: Wet Tropics Bioregion, Australia Methods: We conducted 60 ground-to-canopy surveys to determine the vertical (tree) and elevation distributions, and microclimate exposure of ants (101 species) at 15 sites...
The interplay of color and bioacoustic traits in the differentiation of a Southeast Asian songbird complexChyi Yin Gwee, Qiao Le Lee, Simon Mahood, Le Manh Hung, Robert Tizard, Krairat Eiamampai, Philip Round & Frank Rheindt
Morphological traits have served generations of biologists as a taxonomic indicator, and have been the main basis for defining and classifying species diversity for centuries. A quantitative integration of behavioural characters, such as vocalizations, in studies on biotic differentiation has arisen more recently, and the relative importance of these different traits in the diversification process remains poorly understood. To provide a framework within which to interpret the evolutionary interplay between morphological and behavioral traits, we...
Aim Investigation of realised niche contraction in declining species can help us understand how and where threats are being either mediated or tolerated across landscapes. It also provides insights into species’ sensitivity to environmental change that are unable to be identified through analysis of declines in range size or abundance alone. Here, we apply the recently proposed ‘niche reduction hypothesis’ to investigate relationships between trends in niche breadth and geographic distribution of declining species. Location...
Does rapid utilisation of elevated nutrient availability allow eucalypts to dominate in the tropical savannas of Australia?Harinandanan Paramjyothi, Brett Murphy, Michael Lawes, Natalie Rossitet-Rachor & Anna Richards
Northern Australia's savannas are amongst the most fire-prone biomes on Earth, and are dominated by eucalypts (Eucalyptus and Corymbia spp.). It is not clear what processes allows this group to dominate under such extreme fire frequencies and if a superior ability to compete for nutrients and water might play a role. There is evidence that eucalypts are adapted to frequent fires; juvenile eucalypts escape the fire trap by growing rapidly in height between fires. However,...
Data from: Niche partitioning between river shark species is driven by seasonal fluctuations in environmental salinityRoss Dwyer, Hamish Campbell, Rebecca Cramp, Colin Burke, Mariana Micheli-Campbell, Richard Pillans, Barry Lyon & Craig Franklin
Tropical rivers and estuaries are highly dynamic environments, where environmental conditions change dramatically over spatial and temporal scales. This creates both physiological and ecological challenges for euryhaline elasmobranchs, where fluctuations in salinity can impact not only osmoregulatory function, but also the ability to find and acquire prey. We investigated how spatial and temporal variation in environmental salinity influences physiological homeostasis, habitat utilisation, and migration timing in two euryhaline carcharhinid sharks within a tropical river in...
Data from: Effect of pH regulation by microbes on corrosion behaviour of duplex stainless steel 2205 in acidic artificial seawater environmentTien Tran Thi Thuy, Krishnan Kannoorpatti, Anna Padovan & Suresh Thennadil
Sulphate reducing bacteria (SRB) can regulate environmental pH because of their metabolism. Since local acidification results in pitting corrosion, the potential capacity of pH regulation by SRB would have important consequences for electrochemical aspects of the bio-corrosion process. This study focussed on identifying the effect of pH on the corrosion of duplex stainless steel (DSS) 2205 in a nutrient rich artificial seawater medium containing SRB species, Desulfovibrio vulgaris. DSS samples were exposed to the medium...
Charles Darwin University12
Commonwealth Scientific and Industrial Research Organisation2
Universidade de Pernambuco1
University of Queensland1
Government of the Northern Territory1
University of Melbourne1
National University of Singapore1
CSIRO Ocean and Atmosphere1