Zobrazeno 1 - 10
of 149
pro vyhledávání: '"Gerhard Wieser"'
Publikováno v:
Forests, Vol 15, Iss 1, p 24 (2023)
Due to land use change, green alder (Alnus alnobetula), formerly restricted to moist slopes, is now expanding to drier sun-exposed sites at the alpine treeline. The highly productive shrub is forming closed thickets, establishing nitrogen-saturated s
Externí odkaz:
https://doaj.org/article/757d3de31b7a4d5bad943fb8cd207f8c
Publikováno v:
Biology, Vol 12, Iss 9, p 1251 (2023)
Seasonal and daily radius variations in the xylem (XRV) and inner bark (IBV) of mature Scots pine trees (Pinus sylvestris) were determined during April 2019–October 2021 at a drought-prone inner alpine site (c. 750 m asl; Tyrol, Austria) by applyin
Externí odkaz:
https://doaj.org/article/c374a9fe81d245f5a2fe85efd7384408
Autor:
Walter Oberhuber, Anna-Lena Dobler, Tamara Heinzle, Francesca Scandurra, Andreas Gruber, Gerhard Wieser
Publikováno v:
Plants, Vol 12, Iss 8, p 1708 (2023)
Green alder (Alnus alnobetula), a tall multi-stemmed deciduous shrub, is widespread at high elevations in the Central European Alps. Its growth form frequently leads to asymmetric radial growth and anomalous growth ring patterns, making development o
Externí odkaz:
https://doaj.org/article/39c88e0e79ea41ba86a8a072f2030ee5
Publikováno v:
Forests, Vol 13, Iss 6, p 857 (2022)
At high elevation or latitude, the margin of the life-form tree is set by low temperature, with trees defined as upright woody species taller than 2–3 m. Globally, the temperature limit of the life-form tree occurs whenever the growing season mean
Externí odkaz:
https://doaj.org/article/729eba27c4e94b509873fd52e2b73fc9
Publikováno v:
Forests, Vol 13, Iss 3, p 440 (2022)
Green alder (Alnus alnobetula) is currently the most expanding shrub species in the Alps. Because dense thickets impair tree establishment, understanding how climate affects shrub growth is essential for predictions of treeline dynamics. We evaluated
Externí odkaz:
https://doaj.org/article/81c3a1ca800d4432af0a8a882930d7dd
Autor:
Gerhard Wieser
Publikováno v:
Forests, Vol 11, Iss 3, p 254 (2020)
Concerns have been raised with respect to the state of high-altitude and high-latitude treelines, as they are anticipated to undergo considerable modifications due to global change, especially dueto climate warming [...]
Externí odkaz:
https://doaj.org/article/aafc572850bd432c9e38ca0c62a30e0d
Autor:
Walter Oberhuber, Ursula Bendler, Vanessa Gamper, Jacob Geier, Anna Hölzl, Werner Kofler, Hanna Krismer, Barbara Waldboth, Gerhard Wieser
Publikováno v:
Forests, Vol 11, Iss 2, p 132 (2020)
Tree growth at high elevation in the Central European Alps (CEA) is strongly limited by low temperature during the growing season. We developed a tree ring series of co-occurring conifers (Swiss stone pine, Norway spruce, European larch) along elevat
Externí odkaz:
https://doaj.org/article/a5b78a36317045b084b59a5bab6677ab
Autor:
Gerhard Wieser, Walter Oberhuber, Andreas Gruber, Florian Oberleitner, Roland Hasibeder, Michael Bahn
Publikováno v:
Forests, Vol 10, Iss 9, p 777 (2019)
This study quantified the effect of shallow soil water availability on sap flow density (Qs) of 4.9 ± 1.5 m tall Picea abies and Larix decidua saplings at treeline in the Central Tyrolean Alps, Austria. We installed a transparent roof construction a
Externí odkaz:
https://doaj.org/article/54b986c86f644ad896510afd38096271
Publikováno v:
Frontiers in Plant Science, Vol 9 (2018)
Beside low temperatures, limited tree growth at the alpine treeline may also be attributed to a lack of available soil nutrients and competition with understory vegetation. Although intra-annual stem growth of Pinus cembra has been studied intensivel
Externí odkaz:
https://doaj.org/article/07f800279b1643f8b91eb651a8d92f27
Publikováno v:
Forests, Vol 10, Iss 9, p 744 (2019)
At the treeline in the Central European Alps, adverse climate conditions impair tree growth and cause krummholz formation of Swiss stone pine (Pinus cembra L.). Multi-stemmed trees (tree clusters) are frequently found in the treeline ecotone and are
Externí odkaz:
https://doaj.org/article/8dba7dbca0a24696904690bf5dfc36de