Inter-annual variation of tree-ring width, δ13C and δ18O in juvenile trees of five plantation poplar cultivars (Populus spp.)

Meyer, Matthias; Krabel, Doris; Kniesel, Britt; Helle, Gerhard

doi:10.1016/j.dendro.2018.07.002

Cited by 2 publications

(2 citation statements)

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“…Several studies show an increasing trend in tree ring δ 18 O during the juvenile age of trees (Labuhn et al, ; Meyer et al, ). However, in our study, the δ 18 O values of four cores display no obvious trend in the early periods of growth, implying there is no “juvenile effect,” which is partly consistent with other previous results (Liu et al, , Liu, Liu, et al, ; Shi et al, ; Young et al, ).…”

Section: Discussionmentioning

confidence: 98%

Asian Summer Monsoon‐Related Relative Humidity Recorded by Tree Ring δ¹⁸O During Last 205 Years

Liu

Wang

et al. 2019

JGR Atmospheres

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To deeply understand the Asian summer monsoon (ASM) strength variation in its fringe region, we established a 205-year stable oxygen isotope (δ 18 O) chronology based on four individual Pinus tabulaeformis Carr. from Ordos Plateau, China. First, we found that δ 18 O in tree rings inherits the signals of summer (June to August) monsoonal precipitation δ 18 O (δ 18 O P ). Second, relative humidity (RH) was observed to have a large effect on the δ 18 O of pine trees. The tree ring δ 18 O series significantly correlates with the observed local RH from June to August (RH JJA ) with r = −0.65 (N = 56, p < 0.001). The RH over Ordos Plateau is greatly influenced by ASM-related precipitation. As such, it could well reflect the variations of ASM intensity. Thus, we reconstructed the RH JJA over Ordos, the center of the ASM fringe region (ASMFR), for the last two centuries. Our reconstructed RH JJA series has a large geographical and spatial representativeness, which is well compared with other precipitation reconstructions in ASMFR and jointly reflects ASM variations in the past. The RH JJA reconstruction showed that the 1870s-1890s were the wettest years in the entire reconstruction, while the middle-late 1920s were the driest. From 1930 to 2012, the RH of the study area continuously decreased. We found significantly negative correlations between RH JJA and the Central Pacific sea surface temperature. This finding means that if the El Niño-Southern Oscillation of the Central Pacific continues to increase in the future, the aridification in the ASMFR will be intensified.

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Section: Discussionmentioning

confidence: 98%

Asian Summer Monsoon‐Related Relative Humidity Recorded by Tree Ring δ¹⁸O During Last 205 Years

Liu

Wang

et al. 2019

JGR Atmospheres

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“…The main reasons are the loss of natural alluvial habitat, especially the sandy and gravelly river 2 SEEFOR 14(1): early view coast that are necessary for the success of the seeds, and competition and introgression with non-native species from the genus Populus sp. (Fossati et al 2004, Vanden Broeck et al 2005, Ziegenhagen et al 2008, Meyer et al 2018. In riparian areas of Croatia, mainly planted clones of poplars are Populus × canadensis Moench and Populus deltoides Bartr.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Work on Generative Seedling Production and Clone Selection of European Black Poplar (Populus nigra L.)

Vujnović

Bogdan

Lanšćak

et al. 2023

SEEFOR

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European black poplar (Populus nigra L.) is a pioneer species that belongs to the Salicaceae family and occurs in riparian ecosystems. It is one of the most endangered forest species in its entire distribution area. In Croatia, black poplars are considered an economically important forest species, but mostly clones originate from crossing combinations with American and European black poplar (Populus × canadensis Moench), while a small number of clones are native black poplar. Studies on native black poplar are quite rare and the generative propagation has not been used. The aim of this study was to gain knowledge on the production of high-quality black poplar seedlings and to carry out the selection of genotypes with the aim of establishing a base for future breeding. The female black poplar tree was selected on phenotypic characteristics in the area of Forest Administration Osijek, Forest Office Valpovo. The tree was cut down in April 2019, and branches with half-open seed capsules on catkins were collected. The branches were transferred to the Croatian Forest Research Institute’s greenhouse, where the catkins opened under the influence of the high temperature. Sowing was done in different substrates to test their effectiveness. Black poplar seedlings were selected and transplanted with regard to development and height growth. The results showed differences in height growth between plants sown in two different substrates and the occurrence of fungal diseases only on plants sown in pure sand. With subsequent multiple propagation using cuttings and selection by genotype, it is expected that it will be possible to identify several clones of native black poplar that will be introduced for use in forestry in Croatia. The use of quality plants grown from seeds will increase the genetic diversity and preserve the native black poplar gene pool.

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Inter-annual variation of tree-ring width, δ13C and δ18O in juvenile trees of five plantation poplar cultivars (Populus spp.)

Cited by 2 publications

References 50 publications

Asian Summer Monsoon‐Related Relative Humidity Recorded by Tree Ring δ¹⁸O During Last 205 Years

Asian Summer Monsoon‐Related Relative Humidity Recorded by Tree Ring δ¹⁸O During Last 205 Years

Preliminary Work on Generative Seedling Production and Clone Selection of European Black Poplar (Populus nigra L.)

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Inter-annual variation of tree-ring width, δ13C and δ18O in juvenile trees of five plantation poplar cultivars (Populus spp.)

Cited by 2 publications

References 50 publications

Asian Summer Monsoon‐Related Relative Humidity Recorded by Tree Ring δ18O During Last 205 Years

Asian Summer Monsoon‐Related Relative Humidity Recorded by Tree Ring δ18O During Last 205 Years

Preliminary Work on Generative Seedling Production and Clone Selection of European Black Poplar (Populus nigra L.)

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Product

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Asian Summer Monsoon‐Related Relative Humidity Recorded by Tree Ring δ¹⁸O During Last 205 Years

Asian Summer Monsoon‐Related Relative Humidity Recorded by Tree Ring δ¹⁸O During Last 205 Years