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; CNS & TSV)
BZ3230: Ecological Research Methods (Level 3; CNS & TSV)
BZ5215: Conservation Biology (Level 5; TSV)
BZ5230: Ecological Research Methods (Level 5; TSV)
BZ5990: Toolkit for the Field Biologist (Level 5; 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

Pike K, Blake S, Gordon I, Cabrera F, Rivas-Torres G, Laso F and Schwarzkopf L (2023) Navigating agricultural landscapes: responses of critically endangered giant tortoises to farmland vegetation and infrastructure. Landscape Ecology, 38. pp. 501-516
Wirth W, Forzan M, Schwarzkopf L and Ariel E (2023) Pathogenesis of Bohle iridovirus infection in Krefft's freshwater turtle hatchlings (Emydura macquarii krefftii). Veterinary Pathology, 60 (1). pp. 139-150
Allen-Ankins S and Schwarzkopf L (2022) Using citizen science to test for acoustic niche partitioning in frogs. Scientific Reports, 12.
Brodie S, Towsey M, Allen-Ankins S, Roe P and Schwarzkopf L (2022) Using a novel visualization tool for rapid survey of long-duration acoustic recordings for ecological studies of frog chorusing. Frontiers in Ecology and Evolution, 9.
Hopkins J, Edwards W and Schwarzkopf L (2022) Invading the soundscape: exploring the effects of invasive species’ calls on acoustic signals of native wildlife. Biological Invasions, 24. pp. 3381-3393
Kelly C, Schwarzkopf L, Gordon I, Pople A, Kelly D and Hirsch B (2022) Dancing to a different tune: changing reproductive seasonality in an introduced chital deer population. Oecologia, 200. pp. 285-294
Komine H, Yasumiba K and Schwarzkopf L (2022) The country toad and the city toad: comparing morphology of invasive cane toads (Rhinella marina) from rural and urban environments. Biological Journal of the Linnean Society, 137 (3). pp. 450-464
McKnight D, Huerlimann R, Bower D, Schwarzkopf L, Alford R and Zenger K (2022) The interplay of fungal and bacterial microbiomes on rainforest frogs following a disease outbreak. Ecosphere, 13 (7).
Nordberg E and Schwarzkopf L (2022) Afraid of the Dark? The Influence of Natural and Artificial Light at Night on the Behavioral Activity of a Nocturnal Gecko. Frontiers in Ecology and Evolution, 10.
Pike K, Blake S, Gordon I, Cabrera F, Nieto-Claudin A, Deem S, Guézou A and Schwarzkopf L (2022) Sharing land with giants: Habitat preferences of Galapagos tortoises on farms. Global Ecology and Conservation, 37.
Pike K, Blake S, Cabrer F, Gordon I and Schwarzkopf L (2022) Body size, sex and high philopatry influence the use of agricultural land by Galapagos giant tortoises. Oryx, 56 (1). pp. 16-25
Riedel J and Schwarzkopf L (2022) Variation in density, but not morphology, of cutaneous sensilla among body regions in nine species of Australian geckos. Journal of Morphology, 283 (5). pp. 637-652

More: ResearchOnline@JCU stores 191+ 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 Government Department of Agriculture, Water and the Environment - National Environmental Science Program 2 (NESP 2) - Resilient Landscapes Hub

Project 3.7 Managing and monitoring resilience in Australia?s national parks

Indicative Funding: $53,500 over 2 years (administered by University of Western Australia)
Summary: This project will build on existing research in acoustic monitoring by Roe and Schwarzkopf, and on survey design analysis by Southwell et al (in review).1 The results will directly inform decisions about future avian monitoring on Christmas Island and provide lessons that can be applied in other places.
Investigators: Lin Schwarzkopf and Paul Roe (College of Science & Engineering and Queensland University of Technology)
Keywords: Birds; Acoustics; Detectability

Ecological Society of Australia - Holsworth Wildlife Research Endowment

Demographic, genetic and dietary analysis of introduced chital deer (Axis axis) in the dry tropics.

Indicative Funding: $5,300 over 1 year
Summary: This project aims to detail the dietary richness of chital deer diet, and explore the association between individual dietary quality and body condition. This will be achieved utilising faecal sample DNA metabarcoding techniques to sequence and analyse the dietary items consumed by chital deer, in combination with faecal chromatography techniques to estimate dietary quality, and exploration of animal morphometric data to investigate the variance in body condition among individuals. My results will detail the dietary items that are associated with chital deer of higher body condition, and more importantly, the dominant vegetation communities that chital deer may utilise to facilitate further range expansion.
Investigators: Matthew Quin, Ben Hirsch, Lin Schwarzkopf and Jan Strugnell (College of Science & Engineering)
Keywords: Chital deer (Axis axis); Habitat preference; Invasive species; DNA metabarcoding; Faecal analysis; Dietary analysis

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 and Department of Agriculture and Fisheries)
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

Australasian Wildlife Management Society - Postgraduate student research award

Predicting habitat vulnerable to invasion: Diet and body condition of introduced chital deer (Axis axis) in the Australian dry tropics

Indicative Funding: $2,000 over 1 year
Summary: This project aims to detail the dietary richness of chital deer diet, and explore the association between individual dietary quality and body condition. This will be achieved utilising faecal sample DNA metabarcoding techniques to sequence and analyse the dietary items consumed by chital deer, in combination with faecal chromatography techniques to estimate dietary quality, and exploration of animal morphometric data to investigate the variance in body condition among individuals. My results will detail the dietary items that are associated with chital deer of higher body condition, and more importantly, the dominant vegetation communities that chital deer may utilise to facilitate further range expansion.
Investigators: Matthew Quin, Ben Hirsch, Lin Schwarzkopf and Jan Strugnell (College of Science & Engineering)
Keywords: Chital deer (Axis axis); Habitat preference; Invasive species; DNA metabarcoding; Faecal analysis; Dietary analysis

QLD Department of Agriculture and Fisheries - Contract Research

Bioacoustics of Asian black-spined toad

Indicative Funding: $29,500 over 1 year
Summary: This Project will extend the research of the original project by increasing the number of ABST calls recorded and improving understanding of the breeding and calling behaviour of ABST and improving surveillance (trapping and camera trapping approaches) for ABST. This Project will also facilitate provision of advice to overseas collaborators in undertaking studies of ABST under the first contract mentioned above. Additional complementary data collection and/or research areas may be undertaken by mutual agreement between the Department and the Collaborator.
Investigators: Lin Schwarzkopf (College of Science & Engineering)
Keywords: toads; Duttaphrynus melanostictus (Asian black-spined toad; Invasive Species

Australian Communities Foundation - Australian Communities Foundation

Ecoacoustic data analysis

Indicative Funding: $100,000 over 1 year
Summary: It is now possible to collect and store vast amounts of environmental sound, or bioacoustic data. The promise of environmental recording is that it could allows us to monitor populations of vocal fauna (birds, mammals and amphibians), but there is so much data, it is not possible for expert human listeners to listen to and identify each species. Thus, artificial intelligence, or AI methods would be useful. However, ecologists also lack the large amounts of labelled data required to easily create convolutional neural networks typically used for such tasks. To develop new AI approaches for monitoring fauna, we require skilled people. This grant is intended to support a post-doctoral fellow to conduct this work.
Investigators: Lin Schwarzkopf (College of Science & Engineering)
Keywords: Acoustic Monitoring; Ecoacoustics; Mammals; Birds; Amphibians

QLD Department of Agriculture and Fisheries - Grant

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

Indicative Funding: $39,500 over 2 years
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 and Fisheries and Perpetual Trustees)
Keywords: toads; invasive species incursions; biodiveristy protection

Ecological Society of Australia - Holsworth Wildlife Research Endowment

Ecological influences on biodiverse morphology in climbing geckos

Indicative Funding: $13,670 over 2 years
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

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

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

Demographic, genetic and dietary analysis of introduced chital deer (axis axis) in the North Queensland dry tropics (PhD , Secondary Advisor/AM)
Species Classification using deep learning-Based signal processing techniques in natural soundscapes (PhD , Secondary Advisor/AM)
Rufous bettongs (Aepyprymnus rufescens) on northern Australian rangelands (Masters , Primary Advisor/AM/Adv)
The value of Sound: How can we use passive acoustic monitoring to survey terrestrial vertebrates? (PhD , Primary Advisor/AM/Adv)
Environmental influences on geographic variations in body size in greater gliders (Petauroides volans) (PhD , Secondary Advisor)
Applying new methods of acoustic analysis to ecological studies of animal chorusing behaviour (PhD , Primary Advisor/AM/Adv)
Sounds of invertebrates of Australia: a primarly analysis of insect calls in the East side of Australia. (PhD , Primary Advisor/AM/Adv)
Population genetics and non-invasive population estimation of the endangered northern bettong, Bettongia tropica (PhD , Primary Advisor/AM/Adv)
Sticky fingers: functional morphology of toepads and associated external attachment structures (Gekkota: diplodactylidae) (PhD , Primary Advisor/AM/Adv)
The interaction between giant tortoises and agriculture in the Galapagos Islands (PhD , Primary Advisor/AM/Adv)

Completed

The impacts of cattle grazing on arboreal reptiles (2018, PhD , Primary Advisor)
An examination of cane toad (Rhinella marina) behaviour: how can we use this knowledge to refine trapping regimes? (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)
Understanding uncertainty to inform conservation: tools to protect the endangered black-throated finch southern subspecies (2021, PhD , Primary Advisor/AM/Adv)
Climatic variability and the vulnerability of rainforest biota to a warming world (2022, PhD , Advisor Mentor)
Population trends, habitat requirements and conservation recommendations for an endangered marsupial, the northern bettong (Bettongia tropica) (2018, PhD , Advisor Mentor)
Feral cat ecology in the Australian Wet Tropics; Occupancy, interactions, and management. (2023, PhD , Secondary Advisor/AM)
Ecology of chital deer in north Queensland (2022, PhD , Secondary Advisor/AM)

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.