Temperature-induced recruitment pulses of Arctic dwarf shrub communities
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F15%3A00473359" target="_blank" >RIV/86652079:_____/15:00473359 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1111/1365-2745.12361" target="_blank" >http://dx.doi.org/10.1111/1365-2745.12361</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/1365-2745.12361" target="_blank" >10.1111/1365-2745.12361</a>
Alternative languages
Result language
angličtina
Original language name
Temperature-induced recruitment pulses of Arctic dwarf shrub communities
Original language description
The effects of climate change on Arctic ecosystems can range between various spatiotemporal scales and may include shifts in population distribution, community composition, plant phenology, primary productivity and species biodiversity. The growth rates and age structure of tundra vegetation as well as its response to temperature variation, however, remain poorly understood because high-resolution data are limited in space and time. Anatomical and morphological stem characteristics were recorded to assess the growth behaviour and age structure of 871 dwarf shrubs from 10 species at 30 sites in coastal East Greenland at 70 degrees N. Recruitment pulses were linked with changes in mean annual and summer temperature back to the 19th century, and a literature review was conducted to place our findings in a pan-Arctic context. Low cambial activity translates into estimated average/maximum plant ages of 59/204years, suggesting relatively small turnover rates and stable community composition. Decade-long changes in the recruitment intensity were found to lag temperature variability by 2 and 6years during warmer and colder periods, respectively (r=0.85(1961-2000 and 1881-1920)).Synthesis. Our results reveal a strong temperature dependency of Arctic dwarf shrub reproduction, a high vulnerability of circumpolar tundra ecosystems to climatic changes, and the ability of evaluating historical vegetation dynamics well beyond the northern treeline. The combined wood anatomical and plant ecological approach, considering insights from micro-sections to community assemblages, indicates that model predictions of rapid tundra expansion (i.e. shrub growth) following intense warming might underestimate plant longevity and persistence but overestimate the sensitivity and reaction time of Arctic vegetation.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DG - Atmospheric sciences, meteorology
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/EE2.3.20.0248" target="_blank" >EE2.3.20.0248: Building up a multidisciplinary scientific team focused on drought</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Ecology
ISSN
0022-0477
e-ISSN
—
Volume of the periodical
103
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
489-501
UT code for WoS article
000350549000020
EID of the result in the Scopus database
2-s2.0-84922907570