Web Access Research Portal

Researcher: Johnson, CN (Professor Christopher Johnson)

Fields of Research

Terrestrial Ecology
Wildlife and Habitat Management
Conservation and Biodiversity
Community Ecology
Population Ecology
Palaeoecology
Behavioural Ecology
Invasive Species Ecology
Ecological Physiology
Animal Behaviour
Biogeography and Phylogeography
Vertebrate Biology
Marine and Estuarine Ecology (incl. Marine Ichthyology)
Speciation and Extinction
Population, Ecological and Evolutionary Genetics
Zoology
Landscape Ecology
Geochronology
Fisheries Sciences
Animal Physiology - Biophysics
Host-Parasite Interactions
Environmental Science and Management
Archaeological Science
Ecological Impacts of Climate Change
Evolutionary Impacts of Climate Change
Quaternary Environments
Environmental Management
Aboriginal and Torres Strait Islander Environmental Knowledge

Research Objectives

Flora, Fauna and Biodiversity at Regional or Larger Scales
Forest and Woodlands Flora, Fauna and Biodiversity
Flora, Fauna and Biodiversity of environments
Fisheries - Wild Caught
Farmland, Arable Cropland and Permanent Cropland Flora, Fauna and Biodiversity
Sparseland, Permanent Grassland and Arid Zone Flora, Fauna and Biodiversity
Ecosystem Assessment and Management at Regional or Larger Scales
Marine Flora, Fauna and Biodiversity
Control of Pests, Diseases and Exotic Species at Regional or Larger Scales
Remnant Vegetation and Protected Conservation Areas at Regional or Larger Scales
Control of Animal Pests, Diseases and Exotic Species in Farmland, Arable Cropland and Permanent Cropland Environments
Rural Water Evaluation (incl. Water Quality)
Climate Change Adaptation Measures
Ecosystem Adaptation to Climate Change
Expanding Knowledge in History and Archaeology
Climate Variability (excl. Social Impacts)
Environmentally Sustainable Animal Production
Ecosystem Assessment and Management
Control of Pests, Diseases and Exotic Species in Mountain and High Country Environments
Animal Production and Animal Primary Products
Ecosystem Assessment and Management of Forest and Woodlands Environments
Fresh, Ground and Surface Water Flora, Fauna and Biodiversity
Disease Distribution and Transmission (incl. Surveillance and Response)
Livestock Raising
Mountain and High Country Flora, Fauna and Biodiversity
Urban and Industrial Flora, Fauna and Biodiversity
Control of Pests, Diseases and Exotic Species
Coastal and Estuarine Flora, Fauna and Biodiversity
Forest and Woodlands Soils
Control of Animal Pests, Diseases and Exotic Species in Forest and Woodlands Environments
Forest and Woodlands Land Management
Natural Hazards in Forest and Woodlands Environments
Understanding Australia's Past
Expanding Knowledge in the Biological Sciences
Expanding Knowledge in the Earth Sciences
Coastal and Estuarine Soils
Rehabilitation of Degraded Coastal and Estuarine Environments

Career Best Publications

Abundance and the Environmental Niche: Environmental Suitability Estimated from Niche Models Predicts the Upper Limit of Local Abundance ; The American Naturalist
Australia's Mammal Extinctions : A 50,000 year history; Cambridge University Press
Ecological consequences of Late Quaternary extinctions of megafauna; Royal Society of London. Proceedings. Biological Sciences
Interactions between mammals and ectomycorrhiza fungi; Trends in Ecology & Evolution
Predator interactions, mesopredator release and biodiversity conservation; Ecology Letters
Rarity of a top predator triggers continent-wide collapse of mammal prey: Dingoes and marsupials in Australia ; Proceedings of The Royal Society : Biological Sciences
Reconstructing the dynamics of ancient human populations from radiocarbon dates: 10 000 years of population growth in Australia; Royal Society of London. Proceedings. Biological Sciences
Species extinction and the relationship between distribution and abundance; Nature: International Weekly Journal of Science
The aftermath of megafaunal extinction: ecosystem transformation in Pleistocene Australia; Science
The disappearing mammal fauna of northern Australia: context, cause, and response ; Conservation Letters

Research Publications

Sarcoptes scabiei: the mange mite with mighty effects on the common wombat (Vombatus ursinus); PLOS One
A comprehensive database of quality-rated fossil ages for Sahul's Quaternary vertebrates; Scientific Data
A faecal index of diet quality that predicts reproductive success in a marsupial folivore; Oecologia
A national framework for research on trophic regulation by the Dingo in Australia; Pacific Conservation Biology
A systematic review of the impacts and management of introduced deer (family Cervidae) in Australia; Wildlife Research
Abundance and the Environmental Niche: Environmental Suitability Estimated from Niche Models Predicts the Upper Limit of Local Abundance ; The American Naturalist
Amplified predation after fire suppresses rodent populations in Australia’s tropical savannas; Wildlife Research
An ecological regime shift resulting from disrupted predator-prey interactions in Holocene Australia; Ecology
An ecological view of the dingo; The Dingo Debate: Origins, Behaviour and Conservation
Ants as indicators for vertebrate fauna at a local scale: an assessment of cross-taxa surrogacy in a disturbed matrix; Biodiversity and Conservation
Australia's Mammal Extinctions : A 50,000 year history; Cambridge University Press
Beyond the disease: is Toxoplasma gondii infection causing population declines in the eastern quoll (Dasyurus viverrinus)?; International Journal for Parasitology: Parasites and Wildlife
Biodiversity friend or foe: Land use by a top predator, the dingo in contested landscapes of the Australian Wet Tropics; Austral Ecology
Biotic interactions influence the projected distribution of a specialist mammal under climate change; Diversity and Distributions
Body mass and extinction risk in Australian marsupials: The 'Critical Weight Range' revisited ; Austral Ecology
Brave new green world - Consequences of a carbon economy for the conservation of Australian biodiversity; Biological Conservation
Bryophyte dispersal by flying foxes: A novel discovery; Oecologia
Burning season influences the response of bird assemblages to fire in tropical savannas; Biological Conservation
Climate change not to blame for late Quaternary megafauna extinctions in Australia; Nature Communications
Climate-driven variation in food availability between the core and range edge of the endangered northern bettong (Bettongia tropica); Australian Journal of Zoology
Combining paleo-data and modern exclosure experiments to assess the impact of megafauna extinctions on woody vegetation; Proceedings of the National Academy of Sciences
Continental-scale governance and the hastening of loss of Australia's biodiversity; Conservation Biology
Correlates of recent declines of rodents in Northern and Southern Australia: habitat structure is critical; PLoS ONE
Criteria for assessing the quality of Middle Pleistocene to Holocene vertebrate fossil ages; Quaternary Geochronology
Density and home range of feral cats in north-western Australia; Wildlife Research
Determinants of local abundance in a major radiation of Australian passerines (Aves: Meliphagoidea); Journal of Biogeography
Diet and breeding of the rufous spiny bandicoot echymipera rufescens australis, Iron Range, Cape York Peninsula; Australian Mammalogy
Dietary variation in spectacled flying foxes (Pteropus conspicillatus) of the Australian Wet Tropics ; Australian Journal of Zoology
Differing impact of a major biogeographic barrier on genetic structure in two large kangaroos from the monsoon tropics of Northern Australia; Ecology and Evolution
Dingoes (Canis dingo Meyer, 1793) continue to be an important reservoir host of Dirofilaria immitis in low density housing areas in Australia; Veterinary Parasitology
Dispersal and the sex ratio at birth in primates; Nature
Ecologica - new eye on life: Dingoes for wildlife
Ecological and economic benefits to cattle rangelands of restoring an apex predator; Journal of Applied Ecology
Ecological consequences of Late Quaternary extinctions of megafauna; Royal Society of London. Proceedings. Biological Sciences
Ecological specialization and population size in a biodiversity hotspot: How rare species avoid extinction; National Academy of Sciences of The United States of America. Proceedings
Effects of a short fire-return interval on resources and assemblage structure of birds in a tropical savanna; Austral Ecology
Effects of predator control on behaviour of an apex predator and indirect consequences for mesopredator suppression; Journal of Applied Ecology
Empirical tests of harvest-induced body-size evolution along a geographic gradient in Australian macropods; Journal of Animal Ecology
Enumerating a continental-scale threat: How many feral cats are in Australia?; Biological Conservation
Environmental Temperature Affects Prevalence of Blood Parasites of Birds on an Elevation Gradient: Implications for Disease in a Warming Climate; PLoS-One
Eroding abodes and vanished bridges: historical biogeography of the substrate specialist pebble-mound mice (pseudomys); Journal of Biogeography
Evidence that dingoes limit abundance of a mesopredator in eastern Australian forests ; Journal of Applied Ecology
Experimental evidence that feral cats cause local extirpation of small mammals in Australia’s tropical savannas; Journal of Applied Ecology
Experiments in no-impact control of dingoes: comment on Allen et al. 2013; Frontiers in Zoology
Extraterritorial hunting expeditions to intense fire scars by feral cats; Scientific Reports
Feral cats are better killers in open habitats, revealed by animal-borne video; PLoS ONE
Fire, people and ecosystem change in Pleistocene Australia; Australian Journal of Botany
Gap-crossing in fragmented habitats by mahogany gliders (Petaurus gracilis). Do they cross roads and powerline corridors?; Australian Mammalogy
Geographic variation in the ecological effects of extinction of Australia's Pleistocene megafauna; Ecography
Good dog! Using livestock guardian dogs to protect livestock from predators in Australia's extensive grazing systems; Wildlife Research
GPS collars are more efficient when collecting high-frequency data; Australian Mammalogy
How guardian dogs protect livestock from predators: territorial enforcement by Maremma sheepdogs; Wildlife Research
Inter-population differences in the tolerance of a marsupial folivore to plant secondary metabolites; Oecologia
Interactions between mammals and ectomycorrhiza fungi; Trends in Ecology & Evolution
Introducing a new top predator, the dingo; Invasion Biology and Ecological Theory: Insights from a Continent in Transformation
Is climate change impacting on lobster stocks in Tasmania?; 8th International Conference and Workshop Lobster Biology and Management
Lack of chronological support for stepwise prehuman extinctions of Australian megafauna; Proceedings of the National Academy of Sciences of The United States of America
Landscape management of fire and grazing regimes alters the fine-scale habitat utilisation by feral cats; PLoS One
Large-herbivore distribution and abundance: intra-and interspecific niche variation in the tropics; Ecological Monographs
Latitudinal gradients in abundance, and the causes of rarity in the tropics: a test using Australian honeyeaters (Aves: Meliphagidae); Oecologia
Livestock guardian dogs as surrogate top predators? How Maremma sheepdogs affect a wildlife community; Ecology and Evolution
Male-biased predation and its effect on paternity skew and life history in a population of common brushtail possums (Trichosurus vulpecula); PLoS One
Mammalian diggers and the ecological impacts of fire; Animal Conservation
Mating system and local dispersal patterns of an endangered potoroid, the northern bettong (Bettongia tropica); Australian Journal of Zoology
Megafaunal decline and fall; Science
Nice weather for bettongs: using weather events, not climate means, in species distribution models; Ecography
Niche breadth and geographical range: Ecological compensation for geographical rarity in rainforest frogs; Biology Letters
No need for disease: Testing extinction hypotheses for the thylacine using multi-species metamodels; Journal of Animal Ecology
Non-natives: 141 scientists object; Nature
Occupancy of the invasive feral cat varies with habitat complexity; PLoS One
Population genetics of the platypus (Ornithorhynchus anatinus): a fine-scale look at adjacent river systems ; Australian Journal of Zoology
Post-fire habitat use of the golden-backed tree-rat (Mesembriomys macrurus) in the northwest Kimberley, Western Australia; Austral Ecology
Predator control promotes invasive dominated ecological states ; Ecology Letters
Predator interactions, mesopredator release and biodiversity conservation; Ecology Letters
Predicting the future range and abundance of fallow deer in Tasmania, Australia; Wildlife Research
Prescribed fire in eucalypt woodlands: immediate effects on a microbat community of northern Australia; Wildlife Research
Protecting livestock while conserving ecosystem function: non-lethal management of wild predators; Carnivores of Australia: Past, Present and Future
Pyrodiversity is the coupling of biodiversity and fire regimes in food webs; Philosophical Transactions of the Royal Society B: Biological Sciences
Rainfall and topography predict gene flow among populations of the declining northern quoll (Dasyurus hallucatus); Conservation Genetics
Range size-abundance relationships in Australian passerines; Global Ecology and Biogeography
Rapid megafaunal extinction following human arrival throughout the New World; Quaternary International
Rarity of a top predator triggers continent-wide collapse of mammal prey: Dingoes and marsupials in Australia ; Proceedings of The Royal Society : Biological Sciences
Reconstructing the dynamics of ancient human populations from radiocarbon dates: 10 000 years of population growth in Australia; Royal Society of London. Proceedings. Biological Sciences
Red in tooth and claw: how top predators shape terrestrial ecosystems ; Journal of Animal Ecology
Regional population structuring and conservation units in the platypus (Ornithorhynchus anatinus); Australian Journal of Zoology
Resistence and resilience: quantifying relative extinction risk in a diverse assemblage of Australian tropical rainforest vertebrates; Diversity and Distributions
Resolving the value of the dingo in ecological restoration; Restoration Ecology
Response to commentary by Woinarski (Critical-weight-range marsupials in northern Australia are declining: a commentary on Fisher et al. (2014) ‘The current decline of tropical marsupials in Australia: is history repeating?’); Global Ecology and Biogeography
Selective hunting of juveniles as a cause of the imperceptible overkill of the Australian Pleistocene megafauna; Alcheringa
Separating the influences of environment and species interactions on patterns of distribution and abundance: competition between large herbivores ; Journal of Animal Ecology
Species extinction and the relationship between distribution and abundance; Nature: International Weekly Journal of Science
Species richness and evenness in Australian birds; The American Naturalist
Stemming the tide: progress towards resolving the causes of decline and implementing management responses for the disappearing mammal fauna of northern Australia; Therya
Sympatric predator odour reveals a competitive relationship in size-structured mammalian carnivores; Behavioral Ecology and Sociobiology
Testing the role of climate change in species decline: is the eastern quoll a victim of a change in the weather?; PLoS ONE
The aftermath of megafaunal extinction: ecosystem transformation in Pleistocene Australia; Science
The current decline of tropical marsupials in Australia: is history repeating?; Global Ecology and Biogeography
The dingo and biodiversity conservation: response to Fleming et al. (2012); Australian Mammalogy
The disappearing mammal fauna of northern Australia: context, cause, and response ; Conservation Letters
The effects of plant defensive chemistry on nutrient availability predict reproductive success in a mammal ; Ecology
The influences of climate, habitat and fire on the distribution of cockatoo grass (Alloteropsis semialata) (Poaceae) in the Wet Tropics of northern Australia; Australian Journal of Botany
The rise and fall of large marsupial carnivores; Carnivores of Australia: Past, Present and Future
The significance of topographic complexity in habitat selection and persistence of a declining marsupial in the Kimberley region of Western Australia; Australian Journal of Zoology
The structure of a micro-bat community in relation to gradients of environmental variation in a tropical urban area; Urban Ecosystems
The virtuous circle: predator-friendly farming and ecological restoration in Australia; Restoration Ecology
Top predators constrain mesopredator distributions; Nature Communications
Translating nutritional ecology from the laboratory to the field: milestones in linking plant chemistry to population regulation in mammalian browsers; Oikos
Uncertainties in dating constrain model choice for inferring extinction time from fossil records; Quaternary Science Reviews
Using dung fungi to interpret decline and extinction of megaherbivores: problems and solutions; Quaternary Science Reviews
Using the Spatial Population Abundance Dynamics Engine for conservation management; Methods in Ecology and Evolution
What caused extinction of the Pleistocene megafauna of Sahul?; Proceedings of the Royal Society B: Biological Sciences
What happened to the megafauna?
Where do livestock guardian dogs go? Movement patterns of free-ranging Maremma sheepdogs; PLoS One

Research Projects

ARC Centre of Excellence of Australian Biodiversity and Heritage; Australian Research Council (ARC)
Does digging by marsupials reduces fire impact and promotes recovery from fire in Australia's woodlands?; The Hermon Slade Foundation (HSF)
Dogs for livestock protection; Winifred Violet Scott Charitable Trust (WVS)
Drought, Disease or Destiny? Identifying Causes of Decline of the Eastern Quoll; Department of Climate Change and Energy Efficiency (DCCEE)
Drought, Disease or Destiny? Identifying Causes of Decline of the Eastern Quoll; Australian Wildlife Society (AWSoc)
Drought, Disease or Destiny? Identifying Causes of Decline of the Eastern Quoll; Holsworth Wildlife Research Endowment (HWRE)
Drought, Disease or Destiny? Identifying Causes of Decline of the Eastern Quoll; Trust of M.A. Ingram (INGRAM)
Drought, Disease or Destiny? Identifying Causes of Decline of the Eastern Quoll; Royal Zoological Society of New South Wales (RZSNSW)
Drought, Disease or Destiny? Identifying Causes of Decline of the Eastern Quoll; Wildlife Disease Association - Australasian section (WDAA)
Drought, disease or destiny? Identifying the causes of decline of the eastern quoll ; Norman Wettenhall Foundation (NWF)
Ecological restoration for Critical Weight Range Mammals in Tasmania's Midlands; Holsworth Wildlife Research Endowment (HWRE)
Genetic distinctiveness and connectivity of flesh-footed shearwater colonies; Holsworth Wildlife Research Endowment (HWRE)
Genetic distinctivness of providence petrel colonies: past, present and future; Birds Australia (BA)
Interactions among predators and impacts on prey on Maria Island: Devils, cats, possums and seabirds ; Holsworth Wildlife Research Endowment (HWRE)
Investigating how different kinds of forest management affect ...; Australian Research Council (ARC)
Is the Felixer cat trap safe for native carnivores?; Experiment (EXP)
Keystone effects of Australia's top predators: dingoes, devils and biodiversity; Australian Research Council (ARC)
Landscape and conservation genetics of Tasmanian bettongs; Holsworth Wildlife Research Endowment (HWRE)
Landscapes and Policy (LaP); Department of Environment and Energy (Cwth) (DoEE)
Long-term ecological effects of Tasmanian devil decline; Holsworth Wildlife Research Endowment (HWRE)
Mammal declines in northern Australia: science for conservation and recovery; Australian Research Council (ARC)
Marsupials as ecosystem engineers; Holsworth Wildlife Research Endowment (HWRE)
Measuring chronic stress in superb fairy-wrens of the Tasmanian Midlands; Australian Wildlife Society (AWSoc)
Population distinctiveness, sizes, and trajectories of Providence Petrels and Flesh-footed Shearwaters; Royal Zoological Society of New South Wales (RZSNSW)
Predator dynamics: the effect of top predator decline on mesopredators; Holsworth Wildlife Research Endowment (HWRE)
Restoring resilience in wildlife populations; Australian Research Council (ARC)
Restoring resilience in wildlife populations: devils, quolls and cats in the Tasmanian Midlands; Holsworth Wildlife Research Endowment (HWRE)
Restoring resilience in wildlife populations: devils, quolls and cats in the Tasmanian Midlands; Ecological Society of Australia Limited (ESAI)
Restoring resilience in wildlife populations: devils, quolls and feral cats in the Tasmanian Midlands.; Royal Zoological Society of New South Wales (RZSNSW)
Significance of fungus and fire in the ecology and management of the Tasmanian bettong; Tasmanian Forest Research Council (TFRC)
Threatened Species Recovery Hub; Department of Environment and Energy (Cwth) (DoEE)
Transformation of vegetation by big herbivores, from the Pleistocene to now; Australian Research Council (ARC)
Using a novel approach to assess microhabitat use under predation risk of declining ground-foraging birds in fragmented farmland; British Ornithologist’s Union (BOU)
Using guardian dogs to protect threatened species; Australian Research Council (ARC)
Arthur River long-term eco-system monitoring project
Assessment of adequacy of possible high conservation Tasmania eucalypt forest

Research Candidate Supervision

Density, Movements and Hunting of Feral Cats in Relation to Fire and Grazing in Northern Australia
Establishing an ecological framewrok for understanding Petrogale species occurrence and species distributions, with reference to relevant environmental variables and the scale at which they operate
Genetic Distinctiveness of Providence Petrel Colonies- Past, Present, and Future
Guardian Dogs for Livestock Protection in Australia
Integrated ecological monitoring of conservation areas
Interactions Between Predatory Mammals in Tasmania (Spotted Tailed Quolls, Tasmanian Devils and Feral Cats) and the Effects on Behaviour and Abundance within Very Differenct Environments in Central Northwest Tasmania
Landscape genetics of Tasmanian mammals vulnerable to foxes and land alteration
Mammal Declines in Northern Australia- The Function of Refuges
Marsupials and Ecosystem Engineers
Population Decline in Eastern Quolls
Predator Dynamics- the Effect of Top Predator Decline on Mesopredators
Reproduction and Feeding Ecology of Long-Beaked Echidna
Restoring resilience in wildlife populations- Critical Weight Range marsupial carnivores
Restoring resilience to wildlife populations - bats and owls
Spatial Ecology of the Tasmanian Spotted-Tailed Quoll
The Ecology of Feral Cats in a Marsupial Carnivore Guild with Decline of the Apex Predator, the Tasmanian Devil
The Illegal Bushmeat Trade in the Okavango Delta of Botswana- Scale Impacts, Drivers and Potential Solutions