Ecological and evolutionary consequences of metabolic rate plasticity in response to environmental change

Norin, Tommy; Metcalfe, Neil B.

doi:10.1098/rstb.2018.0180

Cited by 174 publications

(185 citation statements)

References 111 publications

(150 reference statements)

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“…Alternatively, some species hibernate by reducing their metabolic rates. While metabolic rates do show flexibility (Norin and Metcalfe 2019), it is clear that most organisms will not be able to demonstrate the extreme metabolic changes used by hibernators (Geiser 1998), as hibernation and torpor require special mechanisms to avoid cellular damage and muscle atrophy (Harlow et al 2001, Donahue et al 2003). For those species for which it may be possible to evolve hibernation, warming temperatures are already reducing the efficiency of hibernation (Henshaw 1968, Inouye et al 2000).…”

Section: Abiotic Limitations To Poleward Shifts In Latitudementioning

confidence: 99%

The challenge of novel abiotic conditions for species undergoing climate‐induced range shifts

2020

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Coincident with recent global warming, species have shifted their geographic distributions to cooler environments, generally by moving along thermal axes to higher latitudes, higher elevations or deeper waters. While these shifts allow organisms to track their thermal niche, these three thermal axes also covary with non‐climatic abiotic factors that could pose challenges to range‐shifting plants and animals. Such novel abiotic conditions also present an unappreciated pitfall for researchers – from both empirical and predictive viewpoints – who study the redistribution of species under global climate change. Climate, particularly temperature, is often assumed to be the primary abiotic factor in limiting species distributions, and decades of thermal biology research have made the correlative and mechanistic understanding of temperature the most accessible and commonly used response to any abiotic factor. Receiving far less attention, however, is that global gradients in oxygen, light, pressure, pH and water availability also covary with latitude, elevation, and/or ocean depth, and species show strong physiological and behavioral adaptations to these abiotic variables within their historic ranges. Here, we discuss how non‐climatic abiotic factors may disrupt climate‐driven range shifts, as well as the variety of adaptations species use to overcome abiotic conditions, emphasizing which taxa may be most limited in this capacity. We highlight the need for scientists to extend their research to incorporate non‐climatic, abiotic factors to create a more ecologically relevant understanding of how plants and animals interact with the environment, particularly in the face of global climate change. We demonstrate how additional abiotic gradients can be integrated into global climate change biology to better inform expectations and provide recommendations for addressing the challenge of predicting future species distributions in novel environments.

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Section: Abiotic Limitations To Poleward Shifts In Latitudementioning

confidence: 99%

The challenge of novel abiotic conditions for species undergoing climate‐induced range shifts

2020

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“…Adaptive physiological plasticity can also help ectotherms acclimate to warmer conditions (Gunderson et al., 2017; Norin & Metcalfe, 2019; Seebacher et al., 2015). However, both behavioural and physiological plasticity may prove insufficient to fully compensate for the effects of warming (Gunderson et al., 2017; Gunderson & Stillman, 2015).…”

Section: Candidate Mechanisms To Buffer the Effects Of Warming On Agementioning

confidence: 99%

Climate change and ageing in ectotherms

Burraco

Orizaola

Monaghan

et al. 2020

Global Change Biology

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Human activity is changing climatic conditions at an unprecedented rate. The impact of these changes may be especially acute on ectotherms since they have limited capacities to use metabolic heat to maintain their body temperature. An increase in temperature is likely to increase the growth rate of ectothermic animals, and may also induce thermal stress via increased exposure to heat waves. Fast growth and thermal stress are metabolically demanding, and both factors can increase oxidative damage to essential biomolecules, accelerating the rate of ageing. Here, we explore the potential impact of global warming on ectotherm ageing through its effects on reactive oxygen species production, oxidative damage, and telomere shortening, at the individual and intergenerational levels. Most evidence derives primarily from vertebrates, although the concepts are broadly applicable to invertebrates. We also discuss candidate mechanisms that could buffer ectotherms from the potentially negative consequences of climate change on ageing. Finally, we suggest some potential applications of the study of ageing mechanisms for the implementation of conservation actions. We find a clear need for more ecological, biogeographical, and evolutionary studies on the impact of global climate change on patterns of ageing rates in wild populations of ectotherms facing warming conditions. Understanding the impact of warming on animal life histories, and on ageing in particular, needs to be incorporated into the design of measures to preserve biodiversity to improve their effectiveness.

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“…Animals possess adaptations to persist despite fluctuations in the environment, from daily weather variability to seasonal patterns and long-term climatic trends (Norin and Metcalfe, 2019;Turner et al, 2017). However, there are limits to the breadth of conditions that animals can withstand (McKechnie and Wolf, 2010;Sergio et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Facultative hyperthermia during a heatwave delays injurious dehydration of an arboreal marsupial

Turner

2020

Journal of Experimental Biology

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Heatwaves negatively impact wildlife populations and their effects are predicted to worsen with ongoing global warming. Animal mass mortality at extremely high ambient temperature (T a) is evidence for physiological dysfunction and, to aid conservation efforts, improving our understanding of animal responses to environmental heat is crucial. To address this, I measured the water loss, body temperature and metabolism of an Australian marsupial during a simulated heatwave. The body temperature of the common ringtail possum Pseudocheirus peregrinus increased passively by ∼3°C over a T a of 29-39°C, conveying water savings of 9.6 ml h −1. When T a crossed a threshold of 35-36°C, possums began actively cooling by increasing evaporative water loss and thermal conductance. It is clear that facultative hyperthermia is effective up to a point, but once this point is surpassedthe frequency and duration of which are increasing with climate changebody water would rapidly deplete, placing possums in danger of injury or death from dehydration.

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Ecological and evolutionary consequences of metabolic rate plasticity in response to environmental change

Cited by 174 publications

References 111 publications

The challenge of novel abiotic conditions for species undergoing climate‐induced range shifts

The challenge of novel abiotic conditions for species undergoing climate‐induced range shifts

Climate change and ageing in ectotherms

Facultative hyperthermia during a heatwave delays injurious dehydration of an arboreal marsupial

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