Assisted migration of the Western Swamp Turtle (Pseudemydura umbrina): Using eco-energetics to Inform translocation decisions under climate change

Sophie Grace Arnall

Research output: ThesisDoctoral Thesis

Abstract

The western swamp turtle is a Critically Endangered species threatened by climate change. Using an energetically-informed mechanistic niche model, current habitat and five potential translocation sites were assessed for their ability to support survival, growth, and reproduction under future (2050, 2070) southwestern Australian climates. Behavioural flexibility is critical to the suitability of these locations. Increased basking appears to mitigate the reduced hydroperiods expected within their current range, and to offset the cooler conditions likely to be experienced at assisted migration locations. However, it also increases predation risk. This trade-off raises new questions for the species' future management.
LanguageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Mitchell, Nicola, Supervisor
  • Kuchling, Gerald, Supervisor
  • Hipsey, Matthew, Supervisor
  • Kearney, Michael R., Supervisor, External person
Thesis sponsors
Award date13 Mar 2018
DOIs
StateUnpublished - 2018

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hydroperiod
predation risk
endangered species
turtle
swamp
translocation
trade-off
niche
energetics
climate change
climate
habitat
decision

Cite this

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title = "Assisted migration of the Western Swamp Turtle (Pseudemydura umbrina): Using eco-energetics to Inform translocation decisions under climate change",
abstract = "The western swamp turtle is a Critically Endangered species threatened by climate change. Using an energetically-informed mechanistic niche model, current habitat and five potential translocation sites were assessed for their ability to support survival, growth, and reproduction under future (2050, 2070) southwestern Australian climates. Behavioural flexibility is critical to the suitability of these locations. Increased basking appears to mitigate the reduced hydroperiods expected within their current range, and to offset the cooler conditions likely to be experienced at assisted migration locations. However, it also increases predation risk. This trade-off raises new questions for the species' future management.",
keywords = "assisted migration, assisted colonisation, dynamic energy budget, niche modelling, translocation, climate change, western swamp turtle, Western swamp tortoise",
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doi = "10.4225/23/5ac2df1485891",
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AB - The western swamp turtle is a Critically Endangered species threatened by climate change. Using an energetically-informed mechanistic niche model, current habitat and five potential translocation sites were assessed for their ability to support survival, growth, and reproduction under future (2050, 2070) southwestern Australian climates. Behavioural flexibility is critical to the suitability of these locations. Increased basking appears to mitigate the reduced hydroperiods expected within their current range, and to offset the cooler conditions likely to be experienced at assisted migration locations. However, it also increases predation risk. This trade-off raises new questions for the species' future management.

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KW - Western swamp tortoise

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