JCU > Research Portfolio > Prof Lin Schwarzkopf

About

My research examines broad ecological and evolutionary questions, including applied problems. I take an integrative approach, using a combination of controlled experiments and observational studies to test hypotheses. Much of my research has used reptiles and amphibians as model systems, but I am broadly interested in a variety of groups.

I am interested in the relationship between vertebrates and habitat structure, and study habitat use and shelter site selection, predator avoidance and thermoregulation, as they relate to habitat. These interests have lead me to study the influence of various anthropogenic effects, such as logging, grazing, and weeds and their control, on vertebrate populations.

The amphibian disease, chytridiomycosis, is strongly influenced by the environment selected by host amphibians. Thus, behaviour and habitat selection by amphibians have important effects on disease dynamics in this system, and these relationships have drawn me to study this system in collaboration with colleagues at JCU and elsewhere.

Invasive species, as predators, prey and competitors can have negative effects on native species. With an industry partner I have developed a trap that exploits the signalling system of invasive amphibians to selectively remove mature reproductive individuals from populations, as a means of local control for these pests.

Adaptation to environmental pressures has lead to many amazing animal charactersitics. Lizard skin shows adaptations ranging from high to low adhesivness and from superhydrophobicity to rapid water transport, depending on species and their environments. I have been examining these traits with collaborators in chemistry and physics at JCU, and from the University of Idaho.

For more information see my Vertebrate Ecology Lab website.

Teaching

AG1007: Introduction to Plants and Animals for Veterinary Science (Level 1; TSV)
BS1001: Introduction to Biological Processes (Level 1; TSV)
BS1007: Introduction to Biodiversity (Level 1; TSV)
BS5460: Fundamentals of Ecology (Level 5; TSV)
BZ2490: Toolkit for the Field Biologist (Level 2; CNS & TSV)
BZ3215: Conservation Biology (Level 3; TSV)
BZ3225: Technological Applications in Ecology (Level 3; TSV)
BZ3230: Ecological Research Methods (Level 3; CNS & TSV)
BZ5215: Conservation Biology (Level 5; TSV)
BZ5225: Technological Applications in Ecology (Level 5; CNS & TSV)
BZ5230: Ecological Research Methods (Level 5; TSV)
BZ5235: Biological Invasions (Level 5; TSV)
BZ5990: Toolkit for the Field Biologist (Level 5; TSV)
SC3008: Professional Placement (Level 3; CNS & TSV)
SC5900: Special Topic (Level 5; TSV)
SC5901: Special Topic 1 (Level 5; TSV)
SC5902: Special Topic 2 (Level 5; TSV)
SC5903: Literature Review (Level 5; TSV)
SC5909: Minor Project and Seminar (Level 5; TSV)
TV1103: Fundamentals of Veterinary Science (Level 1; TSV)

Interests

Research

Relationship between vertebrates and habitat structure
Behaviour and habitat selection
Signalling system of cane toads
Acoustic Biology

Research Disciplines

Socio-Economic Objectives

Honours

Awards

2019 - Outstanding Achievement in Research
2007 - Dean’s Award for Best Research Group JCU
1986 - Natural Sciences and Engineering Research Council of Canada Postgraduate Fellowship
1984 - Queensland Federation of University Women - Audrey Jorss, Freda Freeman Fellowship

Fellowships

1995 to 1997 - JCU Postdoctoral Fellowship
1993 to 1995 - Natural Sciences and Engineering Research Council of Canada Postdoctoral Fellowship
1991 to 1993 - CSIRO Postdoctoral Research Fellowship

Publications

These are the most recent publications associated with this author. To see a detailed profile of all publications stored at JCU, visit ResearchOnline@JCU. Hover over Altmetrics badges to see social impact.

Journal Articles

Brodie S, Yasumiba K, Towsey M, Roe P and Schwarzkopf L (2021) Acoustic monitoring reveals year-round calling by invasive toads in tropical Australia. Bioacoustics: the international journal of animal sound and its recording, 30 (2), pp. 125-141, DOI:10.1080/09524622.2019.1705183.
Hopkins J, Edwards W, Laguna J and Schwarzkopf L (2021) An endangered bird calls less when invasive birds are calling. Journal of Avian Biology, 52 (1), Article: e02642, DOI:10.1111/jav.02642.
Kelly C, Schwarzkopf L, Gordon I and Hirsch B (2021) Population growth lags in introduced species. Ecology and Evolution, 11 (9), pp. 4577-4587, DOI:10.1002/ece3.7352.
McKnight D, Wirth W, Schwarzkopf L and Nordberg E (2021) Leech removal is not the primary driver of basking behavior in a freshwater turtle. Ecology and Evolution, 11 (16), pp. 10936-10946, DOI:10.1002/ece3.7876.
Nordberg E, Denny R and Schwarzkopf L (2021) Testing measures of boldness and exploratory activity in native versus invasive species: geckos as a model system. Animal Behaviour, 177, pp. 215-222, DOI:10.1016/j.anbehav.2021.05.013.
Nordberg E, Caley M and Schwarzkopf L (2021) Designing solar farms for synergistic commercial and conservation outcomes. Solar Energy, 228, pp. 586-593, DOI:10.1016/j.solener.2021.09.090.
Pike K, Blake S, Cabrer F, Gordon I and Schwarzkopf L (in press) Body size, sex and high philopatry influence the use of agricultural land by Galapagos giant tortoises. Oryx, , DOI:10.1017/S0030605320001167.
Brodie S, Allen-Ankins S, Towsey M, Roe P and Schwarzkopf L (2020) Automated species identification of frog choruses in environmental recordings using acoustic indices. Ecological Indicators, 119, Article: 106852, DOI:10.1016/j.ecolind.2020.106852.
Fushida A, Riedel J, Nordberg E, Pillai R and Schwarzkopf L (2020) Can geckos increase shedding rate to remove fouling? Herpetologica, 76 (1), pp. 22-26, DOI:10.1655/Herpetologica-D-19-00039.
Indraswari K, Bower D, Tucker D, Schwarzkopf L, Towsey M and Roe P (2020) Assessing the value of acoustic indices to distinguish species and quantify activity: a case study using frogs. Freshwater Biology, 65 (1), pp. 142-152, DOI:10.1111/fwb.13222.
Komine H, Koike S and Schwarzkopf L (2020) Impacts of artificial light on food intake in invasive toads. Scientific Reports, 10, Article: 6527, DOI:10.1038/s41598-020-63503-9.
McKnight D, Carr L, Bower D, Schwarzkopf L, Alford R and Zenger K (2020) Infection dynamics, dispersal, and adaptation: understanding the lack of recovery in a remnant frog population following a disease outbreak. Heredity, 125, pp. 110-123, DOI:10.1038/s41437-020-0324-x.

More: ResearchOnline@JCU stores 173+ research outputs authored by Prof Lin Schwarzkopf from 1983 onwards.

Current Funding

Current and recent Research Funding to JCU is shown by funding source and project.

Australian Research Council - Linkage - Projects

Understanding population growth time lags in invasive species: Chital deer as a model system

Indicative Funding: $394,015 over 5 years, in partnership with QLD Department of Agriculture and Fisheries ($80,000)
Summary: Lags in population growth of introduced species are common, but poorly understood. Chital deer (Axis axis) are an invasive species introduced to Australia over 130 years ago, but their numbers have only increased dramatically in the past 30-40 years. We will use data collected from wild animals, landholder surveys, and computer simulation models to clarify causes of sudden population expansion in more detail. Understanding lags will allow us to understand their causes, and better control populations of invasive species. By predicting drivers of rapid population growth, we can better mitigate the associated economic and environmental costs of invasive species.
Investigators: Ben Hirsch, Lin Schwarzkopf and Jan Strugnell in collaboration with Tony Pople (College of Science & Engineering, Department of Agriculture and Fisheries & Forestry)
Keywords: chital (Axis axis); Invasive Species; landscape geneticfs; beef production demography; deer

WV Scott Charitable Trust - Research Grant

Tackling Frog Disease

Indicative Funding: $155,000 over 9 years
Summary: Chytridiomycois is one of the most dramatic and important emerging infectious diseases in wildlife. It is caused by a fungal pathogen (Batrachochytrium dendrobatidis or Bd), which parasitizes the skin of amphibians. This highly contagious pathogen has been responsible for making frogs the most endangered vertebrates on earth. Remarkably, some populations that experienced drastic declines have recovered, and now appear to coexist with the fungus, but the nature of their recovery remains a mystery. There are a a range of possible complex and interacting reasons why frog populations may coexist with this disease, which could be evolutionary, behavioural, environmental, or ecological. We are examining possible reasons for coexistence, to find approaches to aid populations that persist but are not recovering.
Investigators: Lin Schwarzkopf and Debbie Bower (College of Science & Engineering)
Keywords: Frog; Disease; Recovery; infection dynamics

WV Scott Charitable Trust - Research Grant

Greater glider (Petauroides Volans) mechanisms for adaptation in extreme environments

Indicative Funding: $44,500 over 8 years
Summary: Greater gliders north of the Tropic of Capricorn are half the size of those occurring in southern Australia and may constitute a subspecies. The mechanism behind these size differences in endotherms is highly controversial. The prevailing theory is heat conservation, due to a decreased surface area to mass ratio in larger animals; however alternative mechanisms have been suggested. This study will be the first to examine divergence in their phylogeny, physiology and differences in thermal tolerance between populations ranging from tropical to temperate forests. Underlying mechanisms will be investigated including water/nutrient availability, seasonality, thermal responses, microhabitat, insulation, and predator/competitor pressure.
Investigators: Denise McGregor, Andrew Krockenberger, Lin Schwarzkopf and Sarah Kerr (College of Science & Engineering and Research Infrastructure)
Keywords: Bergmann's rule; Thermoregulation; Greater glider; Petauroides Volans- Pseudocheiridae; Body Size; Genetic divergence

Australian Research Council - Linkage - Infrastructure (L-IEF)

Australian Acoustic Observatory: A Network to Monitor Biodiversity

Indicative Funding: $927,000 over 8 years (administered by QUT)
Summary: Acoustic sensing is transforming environmental science by recording vocal species 24 x 7, providing data of unparalleled spatial and temporal resolution for ecosystem monitoring and research. This is particularly relevant to Australia's fragile and mega-diverse environment and Australia has leading research expertise in this emerging field. The proposed observatory will be the world's largest terrestrial acoustic sensor network comprising 450 listening stations deployed across Australia. Funds will purchase autonomous sound recorders and online storage and processing hardware. Data will be freely available to all online, enabling new science in understanding ecosystems, long-term environmental change, data visualisation and acoustic science.
Investigators: Paul Roe, David Watson, Richard Fuller, Stuart Parsons, Tomasc Bednarz, Margot Brereton, Lin Schwarzkopf, Dale Nimmo, Berndt Janse van Rensburg, Martine Maron, Marcus Sheaves, Paul McDonald and Gary Luck (Queensland University of Technology, Charles Sturt University, The University of Queensland, College of Science & Engineering and The University of New England)
Keywords: Monitoring; Frogs; acoustic; Birds

Lendlease - Contract Research

Elliot Springs ? Offset Management Plan compliance for Black-throated Finch Scientific Study

Indicative Funding: $60,000 over 3 years
Summary: We will be determining the efficacy of using remote acoustic monitoring tools for black-throated finches (southern subspecies), by deploying automated recorders for one week each in a variety of locations around Qld where black-throated finches may occur, and manually surveying these areas once at the beginning of deployment and once at the end. Acoustic recordings will be analysed using human listening and automated artificial intelligence screening for black-throated finch calls. The results from the two methods will be compared to determine if acoustic monitoring is sufficient to monitor the occurrence of these finches in various locations.
Investigators: Lin Schwarzkopf and Juan Mula Laguna (College of Science & Engineering)
Keywords: Poephila cincta cincta; Acoustic monitoring; ecology

Ecological Society of Australia - Holsworth Wildlife Research Endowment

Ecological influences on biodiverse morphology in climbing geckos

Indicative Funding: $6,670 over 1 year
Summary: Ecological interactions are one of the main drivers of biodiversity generation. The influence of ecology on the morphology of organisms is one such interaction that influences the generation of biodiversity. Australian Diplodactyline geckos are some of the most morphologically and ecologically diverse systems in the world. They occupy a diverse range of habitats and have evolved unique toe pads enable the exploitation of several substrates within the habitats they occupy. Therefore, my project will investigate how toe pads have evolved in response to habitat use in Diplodactyline geckos. We will examine these relationships by studying habitat use and morphology, with locomotor performance as an intermediary link.
Investigators: Lin Schwarzkopf in collaboration with Rishab Pillai (College of Science & Engineering)
Keywords: Diplodactylidae; Locomotor performance; Morphology; Ecology

Australian Research Council - Discovery - Projects

Acoustics for Large Scale Biodiversity Assessment

Indicative Funding: $560,082 over 2 years
Summary: Aims: This project will investigate using automated acoustic recording to efficiently census biodiversity assessment at a continental scale. Significance: To generate new techniques for analysing environmental acoustic data and assessing Australian biodiversity, verified empirical estimates of biodiversity, an understanding of causes of variation in biodiversity. Expected outcomes: methods for large-scale and accurate assessment of biodiversity, enhanced capacity to detect causes of variation in biodiversity, open-source software tools for analysing environmental audio data, biodiversity datasets. Benefits: measuring and understanding biodiversity change, allowing enhanced management, conservation, and use of Australian natural resources.
Investigators: Lin Schwarzkopf, Richard Fuller, Paul Roe, David Watson and Paul McDonald (College of Science & Engineering, The University of Queensland, Queensland University of Technology, Charles Sturt University and The University of New England)
Keywords: ecoacoustics; Birds; sound recording; Frogs

Lifestyle Logic Pty Ltd - Contract Research

Gecko Repeller Spray Test.

Indicative Funding: $4,745
Summary: Following from previous work testing a proposed gecko repellent on introduced, feral geckos, we will now test it on native geckos.
Investigators: Lin Schwarzkopf (College of Science & Engineering)
Keywords: Ecology; repellent; Gehyra dubia; Geckos

QLD Department of Agriculture and Fisheries - Grant

Ecology and bioacoustics of the Asian black-spined toad (Duttaphrynus melanostictus)

Indicative Funding: $10,000
Summary: A process has been designed by JCU, DAF and IPB University, based on Muller and Schwarzkopf, to determine and optimise ABST responses to lure calls and toad traps. Here we will extend that process to record, analyse and test ABST calls from outside of the local range of toads from Bogor Indonesia.
Investigators: Lin Schwarzkopf, Malcolm Kennedy and Mirsa Kusrini (College of Science & Engineering, Department of Agriculture, Fisheries & Forestry and Perpetual Trustees)
Keywords: toads; invasive species incursions; biodiveristy protection

Lifestyle Logic Pty Ltd - Consultancy

Gecko Repeller Spray Test

Indicative Funding: $9,491 over 1 year
Summary: We will be determining the efficacy of a repellent spray for geckos developed by Pestrol. We will first test overall efficacy in part one of the grant, and if the substance works to repel geckos from shelters, we will further test the length of time it works for and whether geckos become habitutated to the substance.
Investigators: Lin Schwarzkopf (College of Science & Engineering)
Keywords: Hemidactylus frenatus; Ecology; Repellent; Gecko

WV Scott Charitable Trust - Research Grant

Acoustic Analysis Postdoctoral Salary

Indicative Funding: $93,000 over 1 year
Summary: We will be analysing acoustic data collected for the Australian Acoustic Observatory to assess biodiversity change.
Investigators: Lin Schwarzkopf and Slade Allen-Ankins (College of Science & Engineering)
Keywords: Biodiversity; artificial intelligence

WV Scott Charitable Trust - Research Grant

Investigating the interaction between giant tortoises and farms in Galapagos

Indicative Funding: $50,000 over 3 years
Summary: Endangered giant tortoises migrate to the highlands for access to important resources. The highlands, however have mostly been converted to support agriculture leaving few natural areas for tortoises to use freely. Because of this, tortoises regularly enter farms, causing conflict. Our aim is to better understand how tortoises use farms as part of their migratory movements and how this affects both tortoise ecology and farm outputs. An improved understanding of the needs of both tortoises and farms will be used to mprove management practices for the Galapagos National Park and farmers.
Investigators: Lin Schwarzkopf and Kyana Pike (College of Science & Engineering)
Keywords: giant tortoise (Chelonoidis spp); farm management; human-wildlife conflict; Migration; Galapagos Island; Conservation

Supervision

Advisory Accreditation: I can be on your Advisory Panel as a Primary or Secondary Advisor.

These Higher Degree Research projects are either current or by students who have completed their studies within the past 5 years at JCU. Linked titles show theses available within ResearchOnline@JCU.

Current

Interactions between bettongs, their environment and the net effect on grazing land (Masters , Primary Advisor/AM/Adv)
Climatic variability and vulnerability in a warming world (PhD , Advisor Mentor)
The Value of Animal Vocalisations to Assess Overall Vertebrate Biodiversity (PhD , Primary Advisor/AM/Adv)
Eco-Morphology of Diplodactylid Geckos in Queensland (PhD , Primary Advisor/AM/Adv)
Feral cats in the North Queensland wet tropics region: Understanding the behavioural and ecological interactions that affect conservation outcomes. (PhD , Secondary Advisor/AM)
The interaction between giant tortoises and agriculture on the Galapagos Islands (PhD , Primary Advisor/AM/Adv)
Environmental influences on geographic variations in body size in greater gliders (Petauroides volans) (PhD , Secondary Advisor)
Understanding population growth time lags in invasive species: Chital deer (Axis axis) as a model system (PhD , Secondary Advisor/AM)
Ecology of Chital Deer in North Queensland (PhD , Secondary Advisor/AM)
The Effect of Invasive Toad Calls on the Calls of other Frogs (PhD , Primary Advisor/AM/Adv)

Completed

Population trends, habitat requirements and conservation recommendations for an endangered marsupial, the northern bettong (Bettongia tropica) (2018, PhD , Advisor Mentor)
An examination of cane toad (Rhinella marina) behaviour: how can we use this knowledge to refine trapping regimes? (2018, PhD , Primary Advisor)
The impacts of cattle grazing on arboreal reptiles (2018, PhD , Primary Advisor)
Balancing beef with biodiversity: faunal responses to different cattle grazing strategies (2018, PhD , Primary Advisor)
Thermal thresholds in the amphibian disease chytridiomycosis (2018, PhD , Secondary Advisor)
Life finds a way: the recovery of frog populations from a chytridiomycosis outbreak (2019, PhD , Secondary Advisor)
Evolution and ecological adaptations of microornamentation in Australian geckos (Gekkota, Squamata) (2020, PhD , Primary Advisor/AM/Adv)
Ranaviral infection in Australian freshwater turtles (2020, PhD , Secondary Advisor/AM)
Invading the soundscape: the impacts of vocal invasive species (2021, PhD , Primary Advisor/AM/Adv)
The ecology of an arboreal rainforest gecko: Saltuarius cornutus (2017, Masters , Primary Advisor)
Understanding uncertainty to inform conservation: tools to protect the endangered black-throated finch southern subspecies (2021, PhD , Primary Advisor/AM/Adv)

Data

These are the most recent metadata records associated with this researcher. To see a detailed description of all dataset records, visit Research Data Australia.

Yasumiba, K. (2019) Cane toad nightly chorus data Hervey Range 2012-2014. James Cook University
Schwarzkopf, L. (2018) Spinal arthritis in cane toads. James Cook University
Schwarzkopf, L. (2015) Eastern water skinks (Eulamprus quoyii) life-history data. James Cook University
Pintor, A. (2015) Hydroregulation in the tropical skink Carlia rubrigularis. James Cook University
Pintor, A. (2015) Latitudinal trends in thermal traits in a clade of small reptilian ectotherms. James Cook University
Pintor, A. (2015) Acclimation of cold tolerance in Carlia longipes. James Cook University
Pintor, A. (2015) Physiological determinants of tolerance to climatic extremes in small ectotherms. James Cook University
Pintor, A. (2015) Tests of the Climatic Variability Hypothesis in Australian Skinks. James Cook University

Collaboration

The map shows research collaborations by institution from the past 7 years.
Note: Map points are indicative of the countries or states that institutions are associated with.