Contrasting habitat associations and ecophysiological adaptations drive interspecific growth differences among Himalayan high-mountain plants

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F25%3A00640041" target="_blank" >RIV/67985939:_____/25:00640041 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41320/25:106309 RIV/60076658:12310/25:43910514

Result on the web

<a href="https://doi.org/10.1093/aob/mcaf014" target="_blank" >https://doi.org/10.1093/aob/mcaf014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/aob/mcaf014" target="_blank" >10.1093/aob/mcaf014</a>

Result language

angličtina

Original language name

Contrasting habitat associations and ecophysiological adaptations drive interspecific growth differences among Himalayan high-mountain plants

Original language description

Background and Aims Understanding interspecific differences in plant growth rates and their internal and external drivers is key to predicting species responses to ongoing environmental changes. Annual growth rates vary among plants based on their ecological preferences, growth forms, ecophysiological adaptations and evolutionary history. However, the relative importance of these factors remains unclear, particularly in high-mountain ecosystems experiencing rapid changes.Methods We examined how habitat associations, elevational optima, growth forms, and ecophysiological and anatomical traits influence interspecific differences in radial growth rates among 324 vascular dicot species naturally occurring in the western Himalayas. Growth rates were determined from annual ring width measurements on the oldest plant sections of over 7800 individuals from a range of habitats (desert, steppe, wetland, alpine, subnival), growth forms (perennial tap-rooted, rhizomatous, cushiony, woody) and climatic gradients (elevations of 2650-6150 m).Key Results Habitat associations accounted for 24 % of the variability in interspecific growth rates. Adding growth form and height increased the explanation to 42 %, and incorporating plant functional traits further improved predictions to 46 %. Growth rates were higher in warmer, drier conditions and lower in cold, wet environments. Subnival cushion plants had the slowest growth, while ruderal plants grew the fastest. Desert plants showed higher growth rates, reflecting their drought adaptive strategies, while wetland forbs had lower growth rates due to increased resource competition. Growth was positively correlated with leaf nitrogen content and non-structural carbohydrates (mainly fructans), due to enhanced photosynthesis and stress tolerance, and negatively correlated with leaf carbon and root nitrogen content.Conclusion Our study of 324 dicot species in the western Himalayas suggests that plant growth in high elevations is determined by a combination of habitat conditions, morphological traits and ecophysiological adaptations. Growth variations among the highest-growing angiosperms reflect adaptive strategies along the global 'fast-slow' and 'acquisitive-conservative' spectrums. These results underscore the importance of habitat-specific studies for predicting plant growth responses to environmental changes, emphasizing a species-specific approach for effective conservation in fragile ecosystems.

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/GA24-11954S" target="_blank" >GA24-11954S: Alpine plants under climate change: from adaptive strategies to ecosystem functioning</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Annals of Botany

ISSN

0305-7364

e-ISSN

1095-8290

Volume of the periodical

135

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

1093-1106

UT code for WoS article

001429183800001

EID of the result in the Scopus database

2-s2.0-105011096668