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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/GA17-12420S" target="_blank" >GA17-12420S: Evoluce funkčních znaků temperátních a tropických alpínských rostlin</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Global Ecology and Biogeography

ISSN

1466-822X

e-ISSN

1466-8238

Svazek periodika

32

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

1073-1086

Kód UT WoS článku

000961720200001

EID výsledku v databázi Scopus

2-s2.0-85151999781