Header

UZH-Logo

Maintenance Infos

Cold hardiness of Pinus nigra Arnold as influenced by geographic origin, warming, and extreme summer drought


Kreyling, Juergen; Wiesenberg, Guido L B; Thiel, Daniel; Wohlfart, Christian; Huber, Gerhard; Walter, Julia; Jentsch, Anke; Konnert, Monika; Beierkuhnlein, Carl (2012). Cold hardiness of Pinus nigra Arnold as influenced by geographic origin, warming, and extreme summer drought. Environmental and Experimental Botany, 78:99-108.

Abstract

Adaptation to the adverse effects of climate change is being investigated more and more through the introduction of species from warmer and drier climates, such as the (sub-) mediterranean Pinus nigra to dry sites in temperate Central Europe. Winter survival, however, may pose a serious threat to this strategy as cold extremes, which naturally determine the poleward range limits of forest trees, are not expected to follow the general warming trend in the near future.
Here, juveniles of P. nigra from eight provenances throughout Europe were exposed to different climate change scenarios (factorial combinations of 42 days of drought and warming by 1.6 ◦ C) in a common garden experiment in Bayreuth, Germany. Cold hardiness (LT50) was determined by the Relative Electrolyte Leakage method (REL) in two consecutive winters.
Cold hardiness of foliage differed by 10 ◦ C between the provenances studied and a local adaptation to minimum temperature was found. Cold hardiness was further affected by extreme summer drought, increasing cold hardiness by 3.9◦C on average in the subsequent winter, and by summer warming, increasing cold hardiness by 3.4◦C. Year-round warming had no significant effect on cold hardiness. Cold hardiness was related to the content of soluble carbohydrates and to the composition of fatty acids and alkanes in the needles. Juveniles of P. nigra exhibited a comparable cold hardiness as juveniles of species native to Central Europe (Pinus sylvestris, Picea abies, Fagus sylvatica and Quercus petraea) under the same climatic conditions. Cold hardiness of the fine roots of P. nigra averaged −16.5 ◦ C compared to −23.8 ◦ C on average for needles.
Our results imply that the cold hardiness of the foliage is adaptive to both long-term growing conditions at the seed origin (genetic heritage) and short-term alterations of these conditions (individual plasticity), while first hints suggest that cold hardiness of the roots is high and might not be adaptive. For P. nigra, below- and above-ground cold hardiness of selected provenances in mid-winter appear suitable for cultivation in temperate regions.

Abstract

Adaptation to the adverse effects of climate change is being investigated more and more through the introduction of species from warmer and drier climates, such as the (sub-) mediterranean Pinus nigra to dry sites in temperate Central Europe. Winter survival, however, may pose a serious threat to this strategy as cold extremes, which naturally determine the poleward range limits of forest trees, are not expected to follow the general warming trend in the near future.
Here, juveniles of P. nigra from eight provenances throughout Europe were exposed to different climate change scenarios (factorial combinations of 42 days of drought and warming by 1.6 ◦ C) in a common garden experiment in Bayreuth, Germany. Cold hardiness (LT50) was determined by the Relative Electrolyte Leakage method (REL) in two consecutive winters.
Cold hardiness of foliage differed by 10 ◦ C between the provenances studied and a local adaptation to minimum temperature was found. Cold hardiness was further affected by extreme summer drought, increasing cold hardiness by 3.9◦C on average in the subsequent winter, and by summer warming, increasing cold hardiness by 3.4◦C. Year-round warming had no significant effect on cold hardiness. Cold hardiness was related to the content of soluble carbohydrates and to the composition of fatty acids and alkanes in the needles. Juveniles of P. nigra exhibited a comparable cold hardiness as juveniles of species native to Central Europe (Pinus sylvestris, Picea abies, Fagus sylvatica and Quercus petraea) under the same climatic conditions. Cold hardiness of the fine roots of P. nigra averaged −16.5 ◦ C compared to −23.8 ◦ C on average for needles.
Our results imply that the cold hardiness of the foliage is adaptive to both long-term growing conditions at the seed origin (genetic heritage) and short-term alterations of these conditions (individual plasticity), while first hints suggest that cold hardiness of the roots is high and might not be adaptive. For P. nigra, below- and above-ground cold hardiness of selected provenances in mid-winter appear suitable for cultivation in temperate regions.

Statistics

Citations

36 citations in Web of Science®
34 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

2 downloads since deposited on 20 Nov 2012
0 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Date:2012
Deposited On:20 Nov 2012 14:12
Last Modified:05 Apr 2016 16:05
Publisher:Elsevier
ISSN:0098-8472
Publisher DOI:https://doi.org/10.1016/j.envexpbot.2011.12.026

Download

Preview Icon on Download
Content: Published Version
Language: English
Filetype: PDF - Registered users only
Size: 1MB
View at publisher

Article Networks

TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.

Author Collaborations