22 Works

Spatial-numerical associations in humans

Luke Greenacre, Jair E. Garcia, Eugene Chan, Scarlett R. Howard & Adrian G. Dyer
Number sense requires an ability to estimate values and respective differences - although how brains most efficiently processes information remains unknown. We tested if participants demonstrate processing preferences for horizontal or vertical representations during paired number comparisons. For numbers above the subitizing range of 1-4 with the largest number positioned upwards, participants demonstrated significantly faster and more accurate responses.

Monitoring Plasmodium falciparum and Plasmodium vivax using microsatellite markers indicates limited changes in population structure after substantial transmission decline in Papua New Guinea

Johanna Kattenberg & Alyssa Barry
Monitoring the genetic structure of pathogen populations may be an economical and sensitive approach to quantify the impact of control on transmission dynamics, highlighting the need for a better understanding of changes in population genetic parameters as transmission declines. Here we describe the first population genetic analysis of the major human malaria parasites, Plasmodium falciparum (Pf) and Plasmodium vivax (Pv) populations following nationwide distribution of long-lasting insecticide treated nets (LLIN) in Papua New Guinea (PNG)....

The importance of wetland margin microhabitat mosaics; the case of shorebirds and thermoregulation

Julia Ryeland, Michael M. A Weston & Matthew R. E. Symonds
Wetlands, and the species that rely upon them, are under significant threat worldwide, with wetlands often being completely removed or drastically altered. Successful wetland management requires an understanding of the interactions between wetland species and the microhabitats they use. The use of microhabitats for thermoregulation in wetland species is poorly studied, though anthropogenic influence on wetlands can reduce the diversity of microhabitats and thus the thermoregulatory options for animals. At high ambient temperatures birds may...

Male fairy-wrens produce and maintain vibrant breeding colours irrespective of individual quality

Alexandra McQueen, Kaspar Delhey, Flavia R. Barzan, Annalise C. Naimo & Anne Peters
Conspicuous colours may signal individual quality if high-quality individuals produce more elaborate colours or have a greater capacity to invest in colour maintenance. We investigate these hypotheses using repeated within-individual observations and experimentally-induced colour production in a wild bird, the superb fairy-wren (Malurus cyaneus). Male superb fairy-wrens undergo an annual moult from brown, non-breeding plumage to an ultraviolet-blue and black breeding plumage. Colour maintenance is especially relevant for this species because structural, ultraviolet-blue plumage colours...

Extreme rainfall events and cooling of sea turtle clutches: implications in the face of climate warming

Jacques-Olivier Laloë, Jamie N. Tedeschi, David T. Booth, Ian Bell Bell, Andy Dunstan, Richard D. Reina & Graeme C. Hays
Understanding how climate change impacts species and ecosystems is integral to conservation. When studying impacts of climate change, warming temperatures are a research focus, with much less attention given to extreme weather events and their impacts. Here we show how localized, extreme rainfall events can have a major impact on a species that is endangered in many parts of its range. We report incubation temperatures from the world’s largest green sea turtle rookery, during a...

Escape responses of terrestrial and aquatic birds to drones: towards a code of practice to minimise disturbance

Michael Weston, Curtis O'Brien, Kristal Kostoglou & Matthew Symonds
1. Advances in human technology can lead to widespread and rapid increases in interactions between wildlife and potentially disturbing stimuli. The recreational use of drones is widespread and increasing, yet laws and codes of practice which aim to manage deleterious impacts (e.g. negative interactions with wildlife) are reactionary, unscientific and inadequate. 2. One prominent potential negative effect of drones interacting with birds is disturbance, the disruption of normal states caused by responses such as escape....

Signatures of selection in a recent invasion reveals adaptive divergence in a highly vagile invasive species

Katarina Stuart, Adam Cardilini, Phillip Cassey, Mark Richardson, William Sherwin, Lee Rollins & Craig Sherman
A detailed understanding of population genetics in invasive populations helps us to identify drivers of successful alien introductions. Here, we investigate putative signals of selection in Australian populations of invasive common starlings, Sturnus vulgaris, and seek to understand how these have been influenced by introduction history. We used reduced representation sequencing to determine population structure, and identify Single Nucleotide Polymorphisms (SNPs) that are putatively under selection. We found that since their introduction into Australia, starling...

Westland petrel data combined GPS and accelerometer data 2016 & 2017

Timothee Poupart, Susan Waugh, Akiko Kato & John Arnould
This study investigated the foraging niche of dimorphic males and females Westland petrel during the chick-rearing period. At-sea movements were recorded with GPS, behaviours and foraging behaviour were recorded with accelerometers, and trophic niche was inferred with stable isotopes (carbon, nitrogen). Altogether, these fine-scale data allowed to look at the foraging niche used by males and females.

Consequences of information suppression in ecological and conservation sciences

Don Driscoll, Georgia Garrard, Alexander Kusmanoff, Steven Dovers, Martine Maron, Noel Preece, Bob Pressey & Euan Ritchie

Egg size is unrelated to ambient temperature in the opportunistically breeding zebra finch

Simon Griffith, Samuel Andrew, Luke McCowan, Laura Hurley, Daisy Englert Duursma, Katherine Buchanan & Mylene Mariette
In many birds, there is significant variation in egg size both across and within clutches that remains to be explained. Birds lay one egg per day and in hot climates, the first laid eggs may start to develop before the laying of the rest of the clutch is complete, through warming by the ambient air temperature. Here, we test the hypothesis that in hot conditions, skews in egg size across the laying sequence may be...

Geographic, temporal and individual factors influencing foraging behaviour and consistency in Australasian gannets

John Arnould, Elodie Camprasse, Lauren Angel & Marlenne Rodríguez-Malagón
Foraging is a behaviour that can be influenced by multiple factors and is highly plastic. Recent studies have shown consistency in individual foraging behaviour has serious ecological and evolutionary implications within species and populations. Such information is crucial to understand how species select habitats, and how such selection might allow them to adapt to the environmental changes they face. Five foraging metrics (maximum distance from the colony, bearing from the colony to the most distal...

The role of boundary length and adjacent patch contrast in guppy mate choice: Dataset, Matlab and R codes

Adelaide Sibeaux, Thomas Camduras & John A. Endler
The presence of various combinations of adjacent colours within polymorphic species’ colour pattern could have a major impact on mate choice. We studied the role of pattern geometry in predicting mate choice in guppies using boundary strength analysis (BSA). BSA estimates the visual contrast intensity between two adjacent colour patches (ΔS) weighted by the lengths of the boundaries between these adjacent colour patches. We measured both the chromatic (hue and saturation) and achromatic (luminance) ΔS...

Data from: Optimising sample sizes for animal distribution analysis using tracking data

Takahiro Shimada, Michele Thums, Mark Hamann, Colin Limpus, Graeme Hays, Nancy FitzSimmons, Natalie Wildermann, Carlos Duarte & Mark Meekan
1. Knowledge of the spatial distribution of populations is fundamental to management plans for any species. When tracking data are used to describe distributions, it is sometimes assumed that the reported locations of individuals delineate the spatial extent of areas used by the target population. 2. Here, we examine existing approaches to validate this assumption, highlight caveats, and propose a new method for a more informative assessment of the number of tracked animals (i.e. sample...

A blueprint for securing Brazil's marine biodiversity and supporting the achievement of global conservation goals

Rafael A. Magris, Micheli D. P. Costa, Carlos E. L. Ferreira, Ciro C. Vilar, Jean-Christophe Joyeux, Joel C. Creed, Margareth S. Copertino, Paulo Horta, Paulo Y. G. Sumida, Ronaldo Francini-Filho & Sergio R. Floeter
Aim: As a step towards providing support for an ecological approach to strengthening marine protected areas (MPAs) and meeting international commitments, this study combines cumulative impact assessment and conservation planning approach to undertake a large-scale spatial prioritisation. Location: Exclusive Economic Zone (EEZ) of Brazil, Southwest Atlantic Ocean Methods: We developed a prioritisation approach to protecting different habitat types, threatened species ranges, and ecological connectivity, while also mitigating the impacts of multiple threats on biodiversity. When...

Do epigenetic changes drive corticosterone responses to alarm cues in larvae of an invasive amphibian?

Roshmi Sarma, Richard Edwards, Ondi Crino, Harrison Eyck, Paul Waters, Michael Crossland, Richard Shine & Lee Rollins
The developmental environment can exert powerful effects on animal phenotype. Recently epigenetic modifications have emerged as one mechanism that can modulate developmentally plastic responses to environmental variability. For example, the DNA methylation profile at promoters of hormone receptor genes can affect their expression and patterns of hormone release. Across taxonomic groups, epigenetic alterations have been linked to changes in glucocorticoid (GC) physiology. GCs are metabolic hormones that influence growth, development, transitions between life-history stages, and...

Foraging niche overlap during chick-rearing in the sexually dimorphic Westland petrel

Timothee Poupart, Susan Waugh, Akiko Kato & John Arnould
Most Procellariform seabirds are pelagic, breed in summer when prey availability peaks, and migrate for winter. They also display a dual foraging strategy (short and long trips) and sex-specific foraging. The Westland petrel Procellaria westlandica, a New Zealand endemic, is one of the rare seabirds breeding in winter. Preliminary findings on this large and sexually-dimorphic petrel suggest a foraging with no evidence of a dual strategy, within a narrow range and with shared areas between...

Primary detection records for aquatic nonindigenous species in global estuarine and marine ecosystems and the Great Lakes

Sarah Bailey, Lyndsay Brown, Marnie Campbell, João Canning-Clode, James Carlton, Nuno Castro, Paula Chainho, Farrah Chan, Joel Creed, Amelia Curd, John Darling, Paul Fofonoff, Bella Galil, Chad Hewitt, Graeme Inglis, Inti Keith, Nicholas Mandrak, Agnese Marchini, Cynthia McKenzie, Anna Occhipinti-Ambrogi, Henn Ojaveer, Larissa Pires-Teixeira, Tamara Robinson, Gregory Ruiz, Kimberley Seaward … & Aibin Zhan
Aim The introduction of aquatic non-indigenous species (ANS) has become a major driver for global changes in species biogeography. We examined spatial patterns and temporal trends of ANS detections since 1965 to inform conservation policy and management. Location Global Methods We assembled an extensive dataset of first records of detection of ANS (1965-2015) across 49 aquatic ecosystems, including the i) year of first collection, ii) population status and iii) potential pathway(s) of introduction. Data were...

Physiological costs and age constraints of a sexual ornament: an experimental study in a wild bird

Alexandra McQueen, Kaspar Delhey, Beatrice Szecsenyi, Ondi Crino, Michael Roast & Anne Peters
Sexual ornaments are often considered honest signals of quality because potential costs or constraints prevent their display by low-quality individuals. Testing for potential physiological costs of ornaments is difficult, as this requires experimentally forcing individuals to produce and display elaborate ornaments. We use this approach to test whether a sexually selected trait is physiologically costly to male superb fairy-wrens (Malurus cyaneus). Male fairy-wrens moult from brown to blue breeding plumage at different times of the...

Human impact overrides bioclimatic drivers of red fox home range size globally

Michael Main, Robert Davis, David Blake, Harriet Mills & Tim Doherty
Aim Identifying the variables that influence animal home range size is important for understanding the biological requirements of individuals and their social interactions. Given their often broad distributions, carnivores are model organisms for studying range-wide determinants of home range size. Here we test predictions about environmental determinants of home range size for one of the world’s most widely distributed carnivores, the red fox (Vulpes vulpes). Location Global Methods We compiled a database of 70 mean...

Dataset from: Positive indirect effects of top-predators on the survival and behaviour of juvenile fishes

Maria Palacios & Mark McCormick
Top-predators can suppress mesopredator behaviour through risk effects. However, there is limited understanding of whether such behavioural suppression can dampen the lethal and sub-lethal effects of mesopredators on bottom level prey. Here, we document a field experiment that examines whether the presence of top-predator cues (visual and chemical stimuli from a coral trout) can cascade to indirectly influence the behaviour and survival of juvenile fish prey of different species (Pomacentrus amboinensis and P. chrysurus) and...

Genetic data and climate niche suitability models highlight the vulnerability of a functionally important plant species from south-eastern Australia

Adam Miller, Craig Nitschke, Andrew Weeks, William Weatherly, Simon Heyes, Steven Sinclair, Owen Holland, Aggie Stevenson, Linda Broadhurst, Susan Hoebee, Craig D. H. Sherman & John Morgan
Habitat fragmentation imperils the persistence of many functionally important species, with climate change a new threat to local persistence due to climate-niche mismatching. Predicting the evolutionary trajectory of species essential to ecosystem function under future climates is challenging but necessary for prioritizing conservation investments. We use a combination of population genetics and niche suitability models to assess the trajectory of a functionally important, but highly fragmented, plant species from south-eastern Australia (Banksia marginata, Proteaceae). We...

Data from: Reptile responses to anthropogenic habitat modification: a global meta-analysis

Tim S. Doherty, Sara Balouch, Kristian Bell, Thomas Burns, Anat Feldman, Charles Fist, Timothy Garvey, Tim Jessop, Shai Meiri & Don Driscoll
Aim To determine how reptile populations respond to anthropogenic habitat modification and determine if species traits and environmental factors influence such responses. Location Global. Time period 1981–2018. Major taxa studied Squamata. Methods We compiled a database of 56 studies reporting how habitat modification affects reptile abundance, and calculated standardised mean differences in abundance (Hedges’ g). We used Bayesian meta-analytical models to test whether responses to habitat modification depended on body size, clutch size, reproductive mode,...

Registration Year

  • 2020
    22

Resource Types

  • Dataset
    22

Affiliations

  • Deakin University
    22
  • Monash University
    4
  • Rio de Janeiro State University
    2
  • Macquarie University
    2
  • UNSW Sydney
    2
  • James Cook University
    2
  • Tel Aviv University
    2
  • Max Planck Institute for Ornithology
    1
  • University of Adelaide
    1
  • Murdoch University
    1