Hayley Geyle

(She/Her)

Hayley Geyle is an ecologist working in a hybrid role with Territory NRM and the Northern Institute (Charles Darwin University). She collaborates closely with Indigenous rangers and Traditional Owners on threatened species projects, with a particular focus on protecting bilbies in the Northern Territory’s arid and semi-arid zones. Through the Digital Women Ranger program, she helps build confidence and capacity for women rangers to use digital tools and data to tell stories about Country. Hayley is passionate about fostering meaningful partnerships that align conservation efforts with shared goals.

Experience

  • 2024–present
    Associate research scientist, Charles Darwin University
  • 2016–2021
    Assistant researcher, Deakin University
  • 2016–2021
    Assistant researcher, Charles Darwin University

Education

  • 2024 
    Charles Darwin University, PhD in Conservation Biology (undergoing examination)
  • 2015 
    Deakin University , Bachelor of Environmental Science (Hons)

Publications

  • 2024
    Declines in greater bilby (Macrotis lagotis) geographic range and realised niche are best explained by the invasive red fox (Vulpes vulpes).,
  • 2024
    Australian threatened birds for which the risk of extinction declined between 1990 and 2020.,
  • 2024
    Unravelling predator-prey interactions in response to planned fire: a case study from the Tanami Desert.,
  • 2024
    Monitoring threats to Australian threatened birds: climate change was the biggest threat in 2020 with minimal progress on its management. ,
  • 2024
    Integrating systematic and targeted scat collection approaches to estimate the abundance of a culturally significant threatened species on Indigenous lands.,
  • 2024
    Trends in monitoring of Australia’s threatened birds (1990–2020): much improved but still inadequate. ,
  • 2023
    Animal population decline and recovery after severe fire: relating ecological and life history traits with expert estimates of population impacts from the Australian 2019–20 megafires. ,
  • 2023
    First you get the money, then you get the power: Comparing the cost and power of monitoring programs to detect changes in occupancy of a threatened marsupial predator. ,
  • 2022
    Application of expert elicitation to estimate population trajectories for species prioritized in Australia’s first threatened species strategy.,
  • 2022
    Australia’s most imperilled vertebrates,
  • 2022
    The conservation impacts of ecological disturbance: Time-bound estimates of population loss and recovery for fauna affected by the 2019-2020 Australian megafires.,
  • 2021
    Red hot frogs: identifying the Australian frogs most at risk of extinction.,
  • 2021
    Butterflies on the brink: identifying the Australian butterflies (Lepidoptera) most at risk of extinction.,
  • 2021
    On the Brink of Extintion: The Small Mammal Decline in Northern Australia.,
  • 2020
    Reptiles on the brink: identifying the Australian terrestrial snake and lizard species most at risk of extinction.,
  • 2020
    Targeted sampling successfully detects the cryptic and declining arboreal marsupial (Phascogale pirata) in northern Australia,
  • 2020
    Invertebrate consumption by feral cats Felis catus in Australia,
  • 2020
    Predation by introduced cats Felis catus on Australian frogs: compilation of species records and estimation of numbers killed,
  • 2020
    Evaluation of camera placement for detection of free-ranging carnivores; implications for assessing population changes,
  • 2020
    Big trouble for little fish: Australian freshwater fishes in imminent risk of extinction,
  • 2019
    Continental-scale assessment reveals inadequate monitoring for threatened vertebrates in a megadiverse country,
  • 2019
    Introduced cats (Felis catus) eating a continental fauna: the number of mammals killed in Australia,
  • 2019
    Introduced cats Felis catus eating a continental fauna: inventory and traits of Australian mammal species killed,
  • 2019
    Metrics of progress in the understanding and management of threats, and their application to Australian birds,
  • 2018
    Towards meaningful monitoring: a case study of a threatened rodent,
  • 2018
    Quantifying extinction risk and forecasting the number of impending Australian bird and mammal extinctions,
  • 2018
    A spatial overview of the global importance of Indigenous lands for conservation,
  • 2017
    Top-down control of species distributions: feral cats driving the regional extinction of a threatened rodent in northern Australia. ,

Professional Memberships

  • Ecological Society of Australia

Contact Hayley for

  • General
  • Media request
  • Speaking request
  • Consulting / Advising
  • Research collaboration
  • Research supervision