Global warming alters Himalayan hemlock's climate sensitivity and growth dynamics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F24%3A00601192" target="_blank" >RIV/67985939:_____/24:00601192 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41320/24:101472 RIV/60076658:12310/24:43908006

Result on the web

<a href="https://doi.org/10.1007/s00382-023-07026-9" target="_blank" >https://doi.org/10.1007/s00382-023-07026-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00382-023-07026-9" target="_blank" >10.1007/s00382-023-07026-9</a>

Result language

angličtina

Original language name

Global warming alters Himalayan hemlock's climate sensitivity and growth dynamics

Original language description

Global warming may lead to increased tree growth but also reduced tree performance due to increased moisture stress. Under what conditions these conflicting responses occur remains uncertain, especially when growth is controlled by different climatic factors throughout the year. Here, we investigate the growth response of Tsuga dumosa, a Himalayan endemic tree species, to global climate change in unique old-growth forests that persist at around 3000 m elevation near Kanchenjunga, Nepal. Specifically, we are examining various growth parameters, including earlywood, adjusted latewood, maximum latewood density, and total basal area increment, to determine how different climatic factors influence growth dynamics during the year. First, we found that the response to climate change varied by season. Climate warming had contrasting effects on different components of tree growth. Higher temperatures during previous October and previous December and warming-induced moisture stress in April reduce earlywood and total annual increment. On the other hand, higher rainfall during June and July limits total tree ring width and adjusted latewood width, respectively. Second, warming is changing the sensitivity of tree growth to various climatic factors. Growth in the past two decades became more dependent on autumn conditions than on spring and summer conditions. Warming alleviates the cold limitation during the cool monsoon summer but reinforces the water deficit during autumn, winter, and pre-monsoon dry spring. Third, analysis of basal area increments, an indicator of aboveground biomass production, showed that accelerated warming in summer contributes to increased annual productivity. However, the growth reduction observed during warming spring and autumn months counteracts this effect. In conclusion, this study highlights the contrasting responses of Tsuga dumosa to climate warming in Himalayan montane forests. While accelerated warming makes the trees less sensitive to summer temperature limitations, warm autumns, dry springs, and less snowy winters become the main limiting factors for their growth. Understanding these complex and contrasting responses, as well as the sensitivity of different growth parameters, is essential for predicting the long-term impacts of climate change on mountain ecosystems.

Czech name

—

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Climate Dynamics

ISSN

0930-7575

e-ISSN

1432-0894

Volume of the periodical

62

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

15

Pages from-to

2333-2347

UT code for WoS article

001129150400001

EID of the result in the Scopus database

2-s2.0-85179662891