Xylem anatomical trait variability provides insight on the climate-growth relationship of Betula nana in western Greenland

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00111961" target="_blank" >RIV/00216224:14310/17:00111961 - isvavai.cz</a>

Result on the web

<a href="https://www.tandfonline.com/doi/pdf/10.1657/AAAR0016-041?needAccess=true" target="_blank" >https://www.tandfonline.com/doi/pdf/10.1657/AAAR0016-041?needAccess=true</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1657/AAAR0016-041" target="_blank" >10.1657/AAAR0016-041</a>

Result language

angličtina

Original language name

Xylem anatomical trait variability provides insight on the climate-growth relationship of Betula nana in western Greenland

Original language description

Climate change has been reported to affect shrub growth positively at several sites at high northern latitudes, including several arctic environments. The observed growth rates are, however, not uniform in space and time, and the mechanistic drivers of these patterns remain poorly understood. Here we investigated spatio-temporal interactions between climatic conditions, xylem anatomical traits, and annual growth of 21 Betula nana L. individuals from western Greenland for the period 2001-2011. Structural equation modeling showed that summer precipitation and winter temperature are affecting annual growth positively. Furthermore, vessel lumen area and vessel grouping, which are related to water conductivity and hydraulic connectivity of the xylem, respectively, positively influenced annual growth. To optimize growth B. nana was thus able to adjust its water transporting system. Annual variation in vessel lumen area seemed to be driven mostly by spring and summer temperatures, whereas annual variation in vessel grouping was driven by winter temperature. Linear models did not reveal a pattern in the spatial variation of xylem anatomical traits across the sampled climatic gradient. However, growth was positively correlated with local variation in insolation. Our results suggest that B. nana can adjust its hydraulic capacity to annual fluctuations in climatic conditions in order to optimize its total radial stem growth rate.

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

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OECD FORD branch

10500 - Earth and related environmental sciences

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

ARCTIC ANTARCTIC AND ALPINE RESEARCH

ISSN

1523-0430

e-ISSN

1938-4246

Volume of the periodical

49

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

359-371

UT code for WoS article

000407837100002

EID of the result in the Scopus database

2-s2.0-85028361495