Oak decline induced by mistletoe, competition and climate change: a case study from central Europe

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F16%3A43890742" target="_blank" >RIV/60076658:12310/16:43890742 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985939:_____/16:00467097

Výsledek na webu

<a href="http://www.preslia.cz/P163Dolezal.pdf" target="_blank" >http://www.preslia.cz/P163Dolezal.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Oak decline induced by mistletoe, competition and climate change: a case study from central Europe

Popis výsledku v původním jazyce

It is predicted that rising temperatures and extreme summer droughts will adversely affect the growth of pedunculate oak (Quercus robur) and contribute to local population decline. Furthermore, such oaks may become prone to infestation with mistletoe (Loranthus europaeus) and competition from neighbouring trees. We tested these predictions in the warm, south-eastern part of the Czech Republic, a drought-prone area where oaks die prematurely. We compared the radial growth patterns of eight categories of oaks differing in age (younger or older than 60 years), presence of neighbouring trees (solitary versus grouped) and infestation with mistletoe (infested versus healthy), and their responses to variation in both annual and intra-annual temperature (T) and precipitation (P). We analysed long-term data from tree rings and detailed dendrometer records of daily increments using moving correlations and regression trees. Oak growth is affected by (i) dry and cold winters, resulting in root damage and water shortages during summer, (ii) a cool and wet March April, hampering the onset of earlywood growth, and (iii) a hot and dry May July period, reducing latewood formation. Latewood width increases when February P > 55 mm, March T > 3.3 degrees C, April P < 60 mm, May P > 50 mm, June T < 19 degrees C and August P > 40 mm. Latewood width decreases with tree age, mistletoe infestation and competiton from neighbouring trees. These factors are responsible for different climate growth responses. Infested oaks develop less latewood if Tin June July is high and this is associated with drought. In healthy oaks May P determines how quickly earlywood growth is completed and hence when latewood formation starts. Grouped trees that compete for soil water are more prone to June July droughts but less harmed by cold springs than solitary oaks.

Název v anglickém jazyce

Oak decline induced by mistletoe, competition and climate change: a case study from central Europe

Popis výsledku anglicky

It is predicted that rising temperatures and extreme summer droughts will adversely affect the growth of pedunculate oak (Quercus robur) and contribute to local population decline. Furthermore, such oaks may become prone to infestation with mistletoe (Loranthus europaeus) and competition from neighbouring trees. We tested these predictions in the warm, south-eastern part of the Czech Republic, a drought-prone area where oaks die prematurely. We compared the radial growth patterns of eight categories of oaks differing in age (younger or older than 60 years), presence of neighbouring trees (solitary versus grouped) and infestation with mistletoe (infested versus healthy), and their responses to variation in both annual and intra-annual temperature (T) and precipitation (P). We analysed long-term data from tree rings and detailed dendrometer records of daily increments using moving correlations and regression trees. Oak growth is affected by (i) dry and cold winters, resulting in root damage and water shortages during summer, (ii) a cool and wet March April, hampering the onset of earlywood growth, and (iii) a hot and dry May July period, reducing latewood formation. Latewood width increases when February P > 55 mm, March T > 3.3 degrees C, April P < 60 mm, May P > 50 mm, June T < 19 degrees C and August P > 40 mm. Latewood width decreases with tree age, mistletoe infestation and competiton from neighbouring trees. These factors are responsible for different climate growth responses. Infested oaks develop less latewood if Tin June July is high and this is associated with drought. In healthy oaks May P determines how quickly earlywood growth is completed and hence when latewood formation starts. Grouped trees that compete for soil water are more prone to June July droughts but less harmed by cold springs than solitary oaks.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

<a href="/cs/project/DF12P01OVV005" target="_blank" >DF12P01OVV005: Význam introdukce a sortimentů dřevin pro památky zahradního umění</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Preslia : časopis České botanické společnosti

ISSN

0032-7786

e-ISSN

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Svazek periodika

88

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

24

Strana od-do

323-346

Kód UT WoS článku

000387096200001

EID výsledku v databázi Scopus

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