Linking Physiology, Climate, and Species Distributional Ranges

Bozinovic, Francisco; Naya, Daniel E.

doi:10.1002/9781118398814.ch17

Cited by 6 publications

(2 citation statements)

References 56 publications

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“…The climate variability hypothesis also corroborates the often lower metabolic rates and narrower thermal tolerances observed for tropical species compared to temperate species (Khaliq et al, 2014;Pollock et al, 2019). Within temperate birds, variation in metabolic rates is generally associated with their winter distribution limits (Bozinovic and Naya, 2014;Canterbury, 2002), but the extent to which non-temperate species respond to the climate and its variation across their range remains unclear. Londoño et al (2015), for example, found no difference in BMR of 253 bird species across a 2.6 km altitudinal gradient in Peru, suggesting that BMR in Neotropical birds is independent of environmental temperature.…”

Section: Introductionsupporting

confidence: 52%

“…Moreover, forecasts of areas at risk of invasion are further complicated by the fact that invasive species often colonize climates in their introduced range that are different from their native range (Bates and Bertelsmeier, 2021;Liu et al, 2020Liu et al, , 2022. Ultimately, species' potential geographical ranges are determined by their physiological response to their environment (Bozinovic et al, 2011;Bozinovic and Naya, 2014), and understanding the mechanistic links between climate and distribution is increasingly recognized as a prerequisite for predicting future species distributions and implementing successful conservation strategies (Pilowsky et al, 2022). The uptake of ecophysiology into ecological forecasting has, however, remained limited, at least partly because of real and perceived concerns regarding data availability and uncertainties over the exact physiological mechanisms animals can employ to cope with changing environments (Boult and Evans, 2021;Buckley et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal variation in thermoregulatory capacity of three closely related Afrotropical Estrildid finches introduced to Europe

Pacioni

Sentís

Керимов

et al. 2023

Journal of Thermal Biology

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Section: Introductionsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Seasonal variation in thermoregulatory capacity of three closely related Afrotropical Estrildid finches introduced to Europe

Pacioni

Sentís

Керимов

et al. 2023

Journal of Thermal Biology

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Testing the metabolic homeostasis hypothesis in amphibians

Kreiman

Solano-Iguarán

Bacigalupe

et al. 2019

Phil. Trans. R. Soc. B

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A number of hypotheses about compensatory mechanisms that allow ectothermic animals to cope with the latitudinal decrease in ambient temperature ( T A ) have been proposed during the last century. One of these hypotheses, the ‘metabolic homeostasis’ hypothesis (MHH), states that species should show the highest thermal sensitivity of the metabolic rate ( Q 10-SMR ) at the colder end of the range of T A s they usually experience in nature. This way, species should be able to minimize maintenance costs during the colder hours of the day, but quickly take advantage of increases in T A during the warmer parts of the day. Here, we created a dataset that includes Q 10-SMR values for 58 amphibian species, assessed at four thermal ranges, to evaluate three predictions derived from the MHH. In line with this hypothesis, we found that: (i) Q 10-SMR values tended to be positively correlated with latitude when measured at lower T A s, but negative correlated with latitude when measured at higher T A s, (ii) Q 10-SMR measured at lower T A s were higher in temperate species, whereas Q 10-SMR measured at higher T A s were higher in tropical species, and (iii) the experimental T A at which Q 10-SMR was maximal for each species decreased with latitude. This is the first study to our knowledge showing that the relationship between Q 10-SMR and latitude in ectotherms changes with the T A at which Q 10-SMR is assessed, as predicted from an adaptive hypothesis. This article is part of the theme issue ‘Physiological diversity, biodiversity patterns and global climate change: testing key hypotheses involving temperature and oxygen’.

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Blood variation implicates respiratory limits on elevational ranges of Andean birds

Linck

Williamson

Bautista

et al. 2021

Preprint

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The extent to which species ranges reflect intrinsic physiological tolerances is a major, unsolved question in evolutionary ecology. To date, consensus has been hindered by the limited tractability of experimental approaches across most of the tree of life. Here, we apply a macrophysiological approach to understand how hematological traits related to oxygen transport shape elevational ranges in a tropical biodiversity hotspot. Along Andean elevational gradients, we measured traits that affect blood oxygen-carrying capacity--total and cellular hemoglobin concentration and hematocrit--for 2,355 individuals of 136 bird species. We used these data to evaluate the influence of hematological traits on elevational ranges. First, we asked whether hematological plasticity is predictive of elevational range breadth. Second, we asked whether variance in hematological traits changed as a function of distance from the midpoint of the elevational range. We found that the correlation between hematological plasticity and elevational range breadth was slightly positive, consistent with a facilitative role for plasticity in elevational range expansion. We further found reduced local variation in hematological traits near elevational range limits and at high elevations, patterns consistent with intensified natural selection, reduced effective population size, or compensatory changes in other cardiohematological traits with increasing distance from species-specific optima for oxygen availability. Our findings suggest that constraints on hematological plasticity and local genetic adaptation to oxygen availability promote the evolution of the narrow elevational ranges that underpin tropical montane biodiversity.

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Linking Physiology, Climate, and Species Distributional Ranges

Cited by 6 publications

References 56 publications

Seasonal variation in thermoregulatory capacity of three closely related Afrotropical Estrildid finches introduced to Europe

Seasonal variation in thermoregulatory capacity of three closely related Afrotropical Estrildid finches introduced to Europe

Testing the metabolic homeostasis hypothesis in amphibians

Blood variation implicates respiratory limits on elevational ranges of Andean birds

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