Redistribution of water via layering branches between connected parent and daughter trees in Norway spruce clonal groups

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F16%3A43906364" target="_blank" >RIV/62156489:43410/16:43906364 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s00468-015-1157-8" target="_blank" >http://dx.doi.org/10.1007/s00468-015-1157-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00468-015-1157-8" target="_blank" >10.1007/s00468-015-1157-8</a>

Result language

angličtina

Original language name

Redistribution of water via layering branches between connected parent and daughter trees in Norway spruce clonal groups

Original language description

Layering is an important mode of vegetative reproduction at treeline, in which clonal daughter trees are formed by the rooting of lower (''layering'') branches of the parent tree. These branches mediate the connection between parent (PT) and daughter tree (DT). Here, we measured quantity and direction of sap flow in layering branches as well as PT and DT, and measured shoot water potentials in the crowns of a connected PT and DT. We found bidirectional sap flow pattern in layering branches, with the bidirectionality of the flow resulting from water potential dynamics of the parent and daughter trees varying diurnally. We found that 4.3 % of the total water transpired by the DT was supplied by the PT root system, with up to 25 % of the instantaneous daughter tree sap flow coming from the parent tree. In contrast, water provided by the daughter's root system to the parent tree comprised only a negligible amount, less than 1 % of the parent's entire sap flow. Additionally, after experimental excavation of part ofthe DT roots, layering branch flow towards the DT increased, while flows in the opposite direction almost vanished. This study showed that aboveground clonal connections can facilitate a new type of hydraulic redistribution where water is transported bidirectionally through branches. This transfer of water and nutrients is vital especially in the first years of the daughter tree but supplies considerable amounts of water even several years after the establishment of a new clonal tree.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EF - Botany

OECD FORD branch

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Project

<a href="/en/project/EE2.3.20.0265" target="_blank" >EE2.3.20.0265: Indicators of trees vitality</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2016

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

—

Volume of the periodical

30

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

13

Pages from-to

5-17

UT code for WoS article

000373645700002

EID of the result in the Scopus database

2-s2.0-84958123647