Site-specific climatic signals in stable isotope records from Swedish pine forests

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F18%3A00494151" target="_blank" >RIV/86652079:_____/18:00494151 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/18:00113411

Result on the web

<a href="http://dx.doi.org/10.1007/s00468-018-1678-z" target="_blank" >http://dx.doi.org/10.1007/s00468-018-1678-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00468-018-1678-z" target="_blank" >10.1007/s00468-018-1678-z</a>

Result language

angličtina

Original language name

Site-specific climatic signals in stable isotope records from Swedish pine forests

Original language description

We produced twentieth century stable isotope data from Pinus sylvestris trees near lakeshores and inland sites in northern Sweden (near Kiruna) and central Sweden (near Stockholm) to evaluate the influence of changing microsite conditions on the climate sensitivity of tree-ring delta C-13 and delta O-18. The data reveal a latitudinal trend towards lower C and O isotope values near the Arctic tree line (-0.8 parts per thousand for delta C-13 and - 2.4 parts per thousand for delta O-18 relative to central Sweden) reflecting widely recognized atmospheric changes. At the microsite scale, delta C-13 decreases from the dry inland to the moist lakeshore sites (- 0.7 parts per thousand in Kiruna and - 1.2 parts per thousand in Stockholm), evidence of the importance of groundwater access to this proxy. While all isotope records from northern and central Sweden correlate significantly against temperature, precipitation, cloud cover and/or drought data, climate signals in the records from moist microsites are consistently stronger, which emphasizes the importance of site selection when producing stable isotope chronologies. Overall strongest correlations are found with summer temperature, except for delta O-18 from Stockholm correlating best with instrumental drought indices. These findings are complemented by significant positive correlations with temperature-sensitive ring width data in Kiruna, and inverse (or absent) correlations with precipitation-sensitive ring width data in Stockholm. A conclusive differentiation between leading and co-varying forcings is challenging based on only the calibration against often defective instrumental climate data, and would require an improved understanding of the physiological processes that control isotope fractionation at varying microsites and joined application of forward modelling.

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

40102 - Forestry

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Trees: structure and function

ISSN

0931-1890

e-ISSN

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Volume of the periodical

32

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

15

Pages from-to

855-869

UT code for WoS article

000431952600017

EID of the result in the Scopus database

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