Browsing NTNU Open by Author "Geiser, Fritz"
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A burning question: what are the risks and benefits of mammalian torpor during and after fires?
Geiser, Fritz; Stawski, Clare; Doty, Anna; Christine, Cooper; Nowack, Julia (Journal article; Peer reviewed, 2018)Although wildfires are increasing globally, available information on how mammals respond behaviourally and physiologically to fires is scant. Despite a large number of ecological studies, often examining animal diversity ... -
Can bats sense smoke during deep torpor?
Doty, Anna; Currie, Shannon E; Stawski, Clare; Geiser, Fritz (Journal article; Peer reviewed, 2017)While torpor is a beneficial energy-saving strategy, it may incur costs if an animal is unable to respond appropriately to external stimuli, which is particularly true when it is necessary to escape from threats such as ... -
Cold-hearted bats: uncoupling of heart rate and metabolism during torpor at sub-zero temperatures
Currie, Shannon E; Stawski, Clare; Geiser, Fritz (Journal article; Peer reviewed, 2018)Many hibernating animals thermoregulate during torpor and defend their body temperature (Tb) near 0°C by an increase in metabolic rate. Above a critical temperature (Tcrit), animals usually thermoconform. We investigated ... -
Growing up in a changing climate: how temperature affects the development of morphological, behavioral and physiological traits of a marsupial mammal
Stawski, Clare; Geiser, Fritz (Peer reviewed; Journal article, 2020)Climate change is likely to affect many mammalian phenotypes, yet little is known whether and how phenotypic plasticity is involved in responding to thermal challenges during mammalian development. We investigated the ... -
Physiological and behavioral responses of an arboreal mammal to smoke and charcoal-ash substrate
Nowack, Julia; Stawski, Clare; Körtner, Gerhard; Geiser, Fritz (Journal article; Peer reviewed, 2017)The recent observation that torpor plays a key role in post-fire survival has been mainly attributed to the reduced food resources after fires. However, some of these adjustments can be facilitated or amplified by environmental ... -
Responding to the weather: energy budgeting by a small mammal in the wild
Hume, Taylor; Geiser, Fritz; Currie, Shannon E; Körtner, Gerhard; Stawski, Clare (Journal article; Peer reviewed, 2019)Energy conservation is paramount for small mammals because of their small size, large surface area to volume ratio, and the resultant high heat loss to the environment. To survive on limited food resources and to fuel their ... -
Thermal physiology and activity in relation to reproductive status and sex in a free-ranging semelparous marsupial
Parker, Cassandra A.; Geiser, Fritz; Stawski, Clare (Journal article; Peer reviewed, 2019)In a changing climate, southern hemisphere mammals are predicted to face rising temperatures and aridity, resulting in food and water shortages, which may further challenge already constrained energetic demands. Especially ...