Impact of climate trends and drought events on the growth of oaks (Quercus robur L. and Quercus petraea (Matt.) Liebl.) within and beyond their natural range

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dc.contributor.authorPerkins, Dianaen_ZA
dc.contributor.authorUhl, Ennoen_ZA
dc.contributor.authorBiber, Peteren_ZA
dc.contributor.authorDu Toit, Benen_ZA
dc.contributor.authorCarraro, Vinicioen_ZA
dc.contributor.authorRotzer, Thomasen_ZA
dc.contributor.authorPretzsch, Hansen_ZA
dc.date.accessioned2020-04-07T13:32:35Z
dc.date.available2020-04-07T13:32:35Z
dc.date.issued2018-02-28
dc.descriptionCITATION: Perkins, D., et al. 2018. Impact of climate trends and drought events on the growth of oaks (Quercus robur L. and Quercus petraea (Matt.) Liebl.) within and beyond their natural range. Forests, 9(3):108, doi:10.3390/f9030108.
dc.descriptionThe original publication is available at http://www.mdpi.com
dc.description.abstractENGLISH ABSTRACT: Due to predicted climate change, it is important to know to what extent trees and forests will be impacted by chronic and episodic drought stress. As oaks play an important role in European forestry, this study focuses on the growth response of sessile oak (Quercus petraea (Matt.) Liebl.) and pedunculate oak (Quercus robur (L.)) under contrasting climatic conditions. Analyses cover both site conditions of their natural occurrence (Southern Germany and Northeast Italy) and site conditions beyond their natural range (South Africa). The sites beyond their natural range represent possible future climate conditions. Tree-ring series from three different sites were compared and analysed using dendrochronological methods. The long-term growth development of oak trees appears to be similar across the sites, yet the growth level over time is higher in the drier and warmer climate than in the temperate zone. When compared with previous growth periods, growth models reveal that oak trees grew more than expected during the last decades. A recent setback in growth can be observed, although growth is still higher than the model predicts. By focusing on the short-term reactions of the trees, distinct drought events and periods were discovered. In each climatic region, similar growth reactions developed after drought periods. A decline in growth rate occurred in the second or third year after the drought event. Oaks in South Africa are currently exposed to a warmer climate with more frequent drought events. This climatic condition is a future prediction also for Europe. In view of this climate change, we discuss the consequences of the long- and short- term growth behaviour of oaks grown in the climate of South Africa for a tree species selection that naturally occurs in Europe.en_ZA
dc.description.urihttps://www.mdpi.com/1999-4907/9/3/108
dc.description.versionPublisher's version
dc.format.extent25 pagesen_ZA
dc.identifier.citationPerkins, D., et al. 2018. Impact of climate trends and drought events on the growth of oaks (Quercus robur L. and Quercus petraea (Matt.) Liebl.) within and beyond their natural range. Forests, 9(3):108, doi:10.3390/f9030108
dc.identifier.issn1999-4907 (online)
dc.identifier.otherdoi:10.3390/f9030108
dc.identifier.urihttp://hdl.handle.net/10019.1/107662
dc.language.isoen_ZAen_ZA
dc.publisherMDPIen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectQuercus petraea -- Climate factorsen_ZA
dc.subjectOak -- Growthen-ZA
dc.titleImpact of climate trends and drought events on the growth of oaks (Quercus robur L. and Quercus petraea (Matt.) Liebl.) within and beyond their natural rangeen_ZA
dc.typeArticleen_ZA
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