31 Works

Sex and age differences in tree cavity dependence in a small arboreal marsupial

Ross Goldingay
Many mammal species depend on tree cavities for shelter and for breeding. Some species may use tree cavities as well as other varied shelters but the extent of their dependence on tree cavities is unknown. One such species is the eastern pygmy-possum (Cercartetus nanus) from eastern Australia which typically shelters alone. I addressed four key questions: i) do different age and sex classes differ in their preferences for small (4 cm diameter) and large (10...

The hidden army: coralivorous Crown of Thorns seastars can spend years as herbivorous juveniles

Dione Deaker, Antonio Agüera, Huang-An Lin, Corinne Lawson, Claire Budden, Symon Dworjanyn, Benjamin Moss & Maria Byrne
Crown of Thorns seastar (COTS) outbreaks are a major threat to coral reefs. Although the herbivorous juveniles and their switch to corallivory are key to seeding outbreaks, they remain a black box in our understanding of COTS. We investigated the impact of a delay in diet transition due to coral scarcity in cohorts reared on coralline algae for 10 months and 6.5 yrs before being offered coral. Both cohorts achieved an asymptotic size (16–18 mm...

Data from: Assessing the trophic ecology of top predators across a recolonisation frontier using DNA metabarcoding of diets

Natasha Hardy, Tina Berry, Brendan P. Kelaher, Simon D. Goldsworthy, Michael Bunce, Melinda A. Coleman, Bronwyn M. Gillanders, Sean D. Connell, Michelle Blewitt, Will Figueira, BM Gillanders, SD Connell, BP Kelaher & SD Goldsworthy
Top predator populations, once intensively hunted, are rebounding in size and geographic distribution. The cessation of sealing along coastal Australia and subsequent recovery of Australian Arctocephalus pusillus doriferus and long-nosed A. forsteri fur seals represents a unique opportunity to investigate trophic linkages at a frontier of predator recolonisation. We characterised the diets of both species across 2 locations of recolonisation, one site an established breeding colony, and the other, a new but permanent haul-out site....

Data from: Invasion-mediated effects on marine trophic interactions in a changing climate: positive feedbacks favour kelp persistence

Ricardo Miranda, Melinda Coleman, Alejandro Tagliafico, Maria Rangel, Lea Mamo, Francisco Barros & Brendan Kelaher
The interactive effects of ocean warming and invasive species are complex and remain a source of uncertainty for projecting future ecological change. Climate-mediated change to trophic interactions can have pervasive ecological consequences, but the role of invasion in mediating trophic effects is largely unstudied. Using manipulative experiments in replicated outdoor mesocosms, we reveal how near-future ocean warming and macrophyte invasion scenarios interactively impact gastropod grazing intensity and preference for consumption of foundation macroalgae (Ecklonia radiata...

Rates of ascidian mediated nitrogen cycling

Dirk Erler & Katie Kelly
Large solitary ascidians, like Herdmania grandis (Heller), can dominate the benthic substrates of subtropical and temperate reefs, however their influence on nitrogen cycling, particularly nitrous oxide (N2O) production, is unknown. Here we incubated individual H. grandis and compared fluxes of dissolved inorganic and gaseous nitrogen species to fluxes from reef sediments. Nitrous oxide production rates per individual ascidian (21 ± 8 nmol ind h-1) are the highest reported for any marine invertebrate. An individual ascidian...

Data from: A review of protocols for the experimental release of kelp (Laminariales) zoospores

Nahlah Alsuwayian, Margaret Mohring, Marion Cambridge, Melinda Coleman, Gary Kendrick & Thomas Wernberg
Kelps (order Laminariales) are foundation species in temperate and arctic seas globally, but they are in decline in many places. Laminarian kelp have an alternation of generations and this poses challenges for experimental studies due to the difficulties in achieving zoospore release and gametophyte growth. Here we review and synthesize the protocols that have been used to induce zoospore release in kelps to identify commonalities and provide guidance on best practices. We found 171 papers,...

Data from: Comparative phylogeography of three host sea anemones in the Indo-Pacific

Pablo Saenz-Agudelo, Madeleine Emms, Emily Giles, Remy Gatins, Gerrit Nanninga, Anna Scott, Jean Paul Hobbs, Ashley Frisch, Suzanne Mills, Ricardo Beldade & Michael Berumen
Aim The mutualistic relationship between anemones and anemonefishes is one of the most iconic examples of symbiosis. However, while anemonefishes have been extensively studied in terms of genetic connectivity, such information is lacking entirely for host sea anemones. Here, we provide the first information on the broad-scale population structure and phylogeographic patterns of three species of host sea anemone, Heteractis magnifica, Stichodactyla mertensii, and Entacmaea quadricolor. We evaluate if there is concordance in genetic structure...

Data from: First circumglobal assessment of Southern Hemisphere humpback whale mitochondrial genetic variation and implications for management

Howard C. Rosenbaum, Francine Kershaw, Martin Mendez, Cristina Pomilla, Matthew S. Leslie, Ken P. Findlay, Peter B. Best, Timothy Collins, Michel Vely, Marcia H. Engel, Robert Baldwin, Gianna Minton, Michael Meyer, Lillian Florez-Gonzalez, M. Michael Poole, Nan Hauser, Claire Garrigue, Muriel Brasseur, John Bannister, Megan Anderson, Carlos Olavarria & C. Scott Baker
The description of genetic population structure over a species’ geographic range can provide insights into its evolutionary history and also support effective management efforts. Assessments for globally distributed species are rare, however, requiring significant international coordination and collaboration. The global distribution of demographically discrete populations for the humpback whale Megaptera novaeangliae is not fully known, hampering the definition of appropriate management units. Here, we present the first circumglobal assessment of mitochondrial genetic population structure across...

Data from: Seascape habitat patchiness and hydrodynamics explain genetic structuring of kelp populations

Christopher Burridge, Melinda A Coleman, Graham Edgar, Neville S Barrett, Halley M S Durrant, HMS Durrant, NS Barrett, GJ Edgar, CP Burridge & MA Coleman
Macroalgae underpin most temperate inshore ecosystems, but increasing macroalgal loss, fragmentation and range contractions are eroding connectivity among populations. Understanding loss, and predicting the likelihood of recovery, is dependent on knowledge of population connectivity and how it is mediated by variability in local seascapes. Although many studies of marine connectivity have focussed on influences of geographic distance on genetic structure, the contribution of intervening habitat is rarely considered. We tested the extent to which geographic...

Data from: Increased temperature, but not acidification, enhances fertilization and development in a tropical urchin: potential for adaptation to a tropicalized eastern Australia

Shawna A. Foo, Symon A. Dworjanyn, Mehar S. Khatkar, Alistair G. B. Poore & Maria Byrne
To predict effects of global change on marine populations, it is important to measure the effects of climate stressors on performance and potential for adaptation. Adaptation depends on heritable genetic variance for stress tolerance being present in populations. We determined effects of near-future ocean conditions on fertilisation success of the sea urchin Pseudoboletia indiana. In 16 multiple dam-sire crosses, we quantified genetic variation in tolerance of warming (+3°C) and acidification (-0.3-0.5 pH units) at the...

Online learning in a time of COVID disruption? The experiences of principals from New South Wales rural and disadvantaged primary schools

Julie-Ann Paredes, Marilyn Chaseling & William E. Boyd

Large-scale interventions may delay decline of the Great Barrier Reef

Scott Condie, Ken Anthony, Mark Baird, Roger Beeden, Daniel Harrison, Éva Plagányi, Russell Babcock, Cameron Fletcher, Rebecca Gorton, Alistair Hobday & David Westcott
On the iconic Great Barrier Reef (GBR) the cumulative impacts of tropical cyclones, marine heatwaves and regular outbreaks of coral-eating crown-of-thorns starfish (CoTS) have severely depleted coral cover. Climate change will further exacerbate this situation over the coming decades unless effective interventions are implemented. Evaluating the efficacy of alternative interventions in a complex system experiencing major cumulative impacts can only be achieved through a systems-modeling approach. We have evaluated combinations of interventions using a coral...

Data from: Mangrove outwelling is a significant source of oceanic exchangeable organic carbon

James Z. Sippo, Damien T. Maher, Douglas R. Tait, Sergio Ruiz-Halpern, Christian J. Sanders & Isaac R. Santos
Exchangeable dissolved organic carbon (EDOC) makes up a significant proportion of the oceanic dissolved organic carbon (DOC) pool, yet EDOC sources to the coastal ocean are poorly constrained. We measured the exchange of EDOC and concentrations of EDOC and DOC in mangrove waters over a 26° latitudinal gradient. A clear latitudinal trend was observed, with the highest EDOC concentrations in the tropics. EDOC exports to the coastal ocean were 4.7 ± 1.9 mmol m−2 d−1,...

Data from: Environmental determinism, and not interspecific competition, drive morphological variability in Australasian warblers (Acanthizidae)

Vicente García-Navas, Marta Rodriguez-Rey, Petter Z. Marki & Les Christidis
Interspecific competition is thought to play a key role in determining the coexistence of closely related species within adaptive radiations. Competition for ecological resources can lead to different outcomes from character displacement to, ultimately, competitive exclusion. Accordingly, divergent natural selection should disfavor those species that are the most similar to their competitor in resource use, thereby increasing morphological disparity. Here we examined ecomorphological variability within an Australo-Papuan bird radiation, the Acanthizidae, which include both allopatric...

Data from: Upgrades of coastal protection infrastructure affect benthic communities

Lea Mamo, Augustine Porter, Alejandro Tagliafico, Melinda Coleman, Stephen Smith, Will Figueira & Brendan Kelaher
Sea level rise, storm surges, aging and wear are forcing upgrades to breakwaters and seawalls to protect coastal areas from erosion and inundation. Such upgrades involve the introduction of new material which may consequently act as an ecological disturbance that can alter established marine communities and ecosystem function. Mitigating ecological impacts requires an understanding of how species assemblages are affected by such works. Here, we use the major upgrade of a regularly wave-overtopped breakwater as...

Diel temperature and pH variability scale with depth across diverse coral reef habitats

Tyler Cyronak, Yui Takeshita, Travis A. Courtney, Eric H. DeCarlo, Bradley D. Eyre, David I. Kline, Todd Martz, Heather Page, Nichole N. Price, Jennifer Smith, Laura Stoltenberg, Martin Tresguerres & Andreas J. Andersson
Coral reefs are facing intensifying stressors, largely due to global increases in seawater temperature and decreases in pH. However, there is extensive environmental variability within coral reef ecosystems which can impact how organisms respond to global trends. We deployed spatial arrays of autonomous sensors across distinct shallow coral reef habitats to determine patterns of spatiotemporal variability in seawater physicochemical parameters. Temperature and pH were positively correlated over the course of a day due to solar...

Data from: Ecological opportunity and ecomorphological convergence in Australasian robins (Petroicidae)

Vicente García-Navas, Marta Rodriguez-Rey & Les Christidis
Ecological theories of adaptive radiation predict that ecological opportunity (EO) stimulates cladogenesis through entry into a novel environment and/or release of competition pressures. Due to its dynamic paleoclimatic and geological history, the Australo-Papuan region constitutes an opportune scenario to study patterns of diversification in relation to the colonization of new ecological niches. Here, we employ a comparative framework using the Australasian robins (Petroicidae) as a model system to test whether the diversification of this bird...

Data from: Impacts of ocean acidification on sea urchin growth across the juvenile to mature adult life-stage transition is mitigated by warming

Symon A. Dworjanyn & Maria Byrne
Understanding how growth trajectories of calcifying invertebrates are affected by changing climate requires acclimation experiments that follow development across life history transitions. In a long-term acclimation study, the effects of increased acidification and temperature on survival and growth of the tropical sea urchin Tripneustes gratilla from the early juvenile (5 mm test diameter- TD) through the developmental transition to the mature adult (60 mm TD) were investigated. Juveniles were reared in a combination of three...

Data from: Does biomass growth increase in the largest trees? Flaws, fallacies and alternative analyses

Douglas Sheil, Chris S. Eastaugh, Mart Vlam, Pieter A. Zuidema, Peter Groenendijk, Peter Van Der Sleen, Alex Jay & Jerome Vanclay
The long-standing view that biomass growth in trees typically follows a rise-and-fall unimodal pattern has been challenged by studies concluding that biomass growth increases with size even among the largest stems in both closed forests and in open competition-free environments. We highlight challenges and pitfalls that influence such interpretations. The ability to observe and calibrate biomass change in large stems requires adequate data regarding these specific stems. Data checking and control procedures can bias estimates...

Data from: Phylogeny and new taxonomy of the Booted Eagles (Accipitriformes: Aquilinae)

Heather R. L. Lerner, Les Christidis, Anita Gamauf, Carole Griffiths, Elisabeth Haring, Christopher J. Huddleston, Sonia Kabra, Annett Kocum, Meade Krosby, Kirsti Kvaloy, David Mindell, Pamela Rasmussen, Nils Rov, Rachel Wadleigh, Michael Wink & Jan Ove Gjershaug
We present a phylogeny of all booted eagles (38 extant and one extinct species) based on analysis of published sequences from seven loci. We find molecular support for five major clades within the booted eagles: Nisaetus (10 species), Spizaetus (4 species), Clanga (3 species), Hieraaetus (6 species) and Aquila (11 species), requiring generic changes for 14 taxa. Additionally, we recommend that the Long-crested Eagle (Lophaetus occipitalis) and the Black Eagle (Ictinaetus malaiensis) remain in their...

Data from: Parallel evolution of bower-building behavior in two groups of bowerbirds suggested by phylogenomics

Per G. P. Ericson, Martin Irestedt, Johan A. A. Nylander, Les Christidis, Leo Joseph & Yanhua Qu
The bowerbirds in New Guinea and Australia include species that build the largest and perhaps most elaborately decorated constructions outside of humans. The males use these courtship bowers, along with their displays, to attract females. In these species, the mating system is polygynous and the females alone incubate and feed the nestlings. The bowerbirds also include 10 species of the socially monogamous catbirds in which the male participates in most aspects of raising the young....

Data from: Future climate change is predicted to affect the microbiome and condition of habitat-forming kelp

Zhiguang Qiu, Melinda A Coleman, Euan Provost, Alexandra H Campbell, Brendan P Kelaher, Steven J Dalton, Torsten Thomas, Peter D Steinberg & Ezequiel M Marzinelli
Climate change is driving global declines of marine habitat-forming species through physiological effects and through changes to ecological interactions, with projected trajectories for oceanwarming and acidification likely to exacerbate such impacts in coming decades. Interactions between habitat-formers and their microbiomes are fundamental for host functioning and resilience, but how such relationships will change in future conditions is largely unknown. We investigated independent and interactive effects of warming and acidification on a large brown seaweed, the...

Data from: Factors influencing organic carbon accumulation in mangrove ecosystems

Alexander Pérez Segovia, Bruno G. Libardoni & Christian J. Sanders
There is growing interest in the capacity of mangrove ecosystems to sequester and store “blue carbon”. Here we provide a synthesis of sixty-six dated sediment cores with previously calculated carbon accumulation rates in mangrove ecosystems to assess the effects of environmental and anthropogenic pressures. Conserved sedimentary environments were found to be within the range of the current global average for sediment accretion (~2.5 mm yr-1) and carbon accumulation (~160 g m-2yr-1). Moreover, similar sediment accretion...

Data from: DNA barcoding reveals the coral “laboratory-rat”, Stylophora pistillata encompasses multiple identities

Shashank Keshavmurthy, Sung-Yin Yang, Ada Alamaru, Yao-Yang Chuang, Michel Pichon, David Obura, Silvia Fontana, Stephane De Palmas, Fabrizio Stefani, Francesca Benzoni, Angus MacDonald, Annika M. E. Noreen, Chienshun Chen, Carden C. Wallace, Ruby M. Pillay, Vianney Denis, Affendi Yang Amri, James D. Reimer, Takuma Mezaki, Charles Sheppard, Yossi Loya, Avidor Abelson, Mohammed S. Mohammed, Andrew C. Baker, Pargol G. Mostafavi … & Chaolun A. Chen
Stylophora pistillata is a widely used coral “lab-rat” species with highly variable morphology and a broad biogeographic range (Red Sea to western central Pacific). Here we show, by analysing Cytochorme Oxidase I sequences, from 241 samples across this range, that this taxon in fact comprises four deeply divergent clades corresponding to the Pacific-Western Australia, Chagos-Madagascar-South Africa, Gulf of Aden-Zanzibar- Madagascar, and Red Sea-Persian/Arabian Gulf-Kenya. On the basis of the fossil record of Stylophora, these four...

Schooling in a time of disruption: the impact of COVID-19 from the perspective of five New South Wales (Australia) secondary principals

Marilyn Chaseling, Julie-Ann Paredes & William E. Boyd

Registration Year

  • 2021
    2
  • 2020
    8
  • 2019
    6
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    4
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    4
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    3
  • 2015
    1
  • 2014
    2
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    1

Resource Types

  • Dataset
    29
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Affiliations

  • Southern Cross University
    31
  • University of Sydney
    6
  • Commonwealth Scientific and Industrial Research Organisation
    3
  • UNSW Sydney
    3
  • Great Barrier Reef Marine Park Authority
    2
  • University of Melbourne
    2
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    2
  • Curtin University
    2
  • Australian Institute of Marine Science
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  • James Cook University
    2