Thermal tolerance of tropical and temperate alpine plants suggests that 'mountain passes are not higher in the tropics'

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F23%3A00580097" target="_blank" >RIV/86652079:_____/23:00580097 - isvavai.cz</a>

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/10.1111/geb.13678" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1111/geb.13678</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/geb.13678" target="_blank" >10.1111/geb.13678</a>

Result language

angličtina

Original language name

Thermal tolerance of tropical and temperate alpine plants suggests that 'mountain passes are not higher in the tropics'

Original language description

AimTolerance of species to extreme temperatures largely determines their distribution and vulnerability to climate change. We examined thermal tolerance in tropical and temperate alpine plants, testing the hypotheses that: (a) temperate plants are resistant to more extreme temperatures and have an overall wider thermal tolerance breadth (TTB), (b) TTB in temperate plants is wider than TTB in tropical plants during the entire growing season, (c) resistance to frost and heat varies during the season in temperate plants but not in tropical plants, (d) TTB of a species predicts its latitudinal range. LocationTropical (Ecuador, Bolivia) and temperate (USA, Austria) mountains. Time periodFour periods of the growing season (2014, 2016-2019). Major taxaNinety-six vascular plant species. MethodsWe employed the electrolyte leakage method to estimate the temperature resistance, that is, the temperature at which 50% tissue injury (Lt50) occurs in leaves. We used phylogenetic linear mixed-effect models in a Bayesian framework to test for differences between the plant groups. ResultsTemperate and tropical plants do not differ in their temperature resistance. The four hypotheses are rejected since: (a) temperate plants do not have significantly wider overall TTB compared to tropical plants, (b) TTB of temperate plants is wider than TTB of tropical plants only at the end of the temperate summer, (c) seasonal acclimation is observed in both plant groups, (d) the latitudinal range of the plants is not related to TTB. Main conclusionsThe lack of TTB differences between temperate and tropical alpine plants is consistent with trends observed in ectothermic animals, which suggests a general latitudinal pattern in high-elevation poikilotherm organisms. Limited acclimation capacity to cope with long freezing exposures restricts the occurrence of tropical alpine species to thermally aseasonal environments making them particularly vulnerable to climate change.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10618 - Ecology

Project

<a href="/en/project/GA17-12420S" target="_blank" >GA17-12420S: Evolution of functional traits of alpine plants in temperate and tropical environments</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Global Ecology and Biogeography

ISSN

1466-822X

e-ISSN

1466-8238

Volume of the periodical

32

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

1073-1086

UT code for WoS article

000961720200001

EID of the result in the Scopus database

2-s2.0-85151999781