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Silver fir decline in the Vosges mountains (France): role of climate and silviculture.
1989
Becker M. | Landmann G. | Levy G.
Possible causes of the recent rapid increase in the radial increment of silver fir in the Western Carpathians
2014
Bošeľa, Michal | Petráš, Rudolf | Sitková, Zuzana | Priwitzer, Tibor | Pajtík, Jozef | Hlavatá, Helena | Sedmák, Róbert | Tobin, Brian
Silver fir is one of the most productive and ecologically valuable native European tree species, however, it has been experiencing decline which has periodically occurred over its natural range. This paper aims to investigate the recent climate–growth relationships of silver fir (Abies alba Mill.) and its temporal change along the course of its life. Long-term tree-ring databases, as well as records on climate, atmospheric SO2, NO3 and acid concentrations from four different regions in the Western Carpathians were used. The results provide clear evidence of significant increase of silver fir's radial increment over the entire Western Carpathian area since 1970–1980. The results indicated that the most probable factors behind the rapid recovery of tree radial increment were reductions in emissions of NO3 and SO2, alongside a significant increase in mean June, July and April temperatures.
Show more [+] Less [-]Linking the contents of hydrophobic PAHs with the canopy water storage capacity of coniferous trees
2018
Anna, Klamerus-Iwan | Emanuel, Gloor | Anna, Sadowska-Rociek | Błońska, Ewa | Lasota, Jarosław | Łagan, Sylwia
The canopy water storage capacity (S) is an important parameter for the hydrological cycle in forests. One factor which influences the S is leaf texture, which in turn is thought to be affected by the contents of polycyclic aromatic hydrocarbons (PAHs). In order to improve our understanding of S we simulated rainfall and measured the S of coniferous species growing under various conditions. The contents of 18 PAHs were measured in the needles. The species chosen were: Scots pine (Pinus sylvestris L), Norway spruce (Picea abies (L.) H. Karst) and silver fir (Abies Alba Mill.). Sample branches were collected in 3 locations: A - forest; B - housing estate; C - city center. We found that PAHs have a significant impact on the S of tree crowns. The increase in the total content of all of polycyclic aromatic hydrocarbons (SUM.PAH) translates into an increase of S for all species. The S is the highest for the P. abies species, followed by P. sylvestris and A. alba at all locations. Within the same species, an increase in the value of S is associated with an increase in the PAH content in needles measured by gas chromatography. For A.alba, the average S increased from 11.54% of the total amount of simulated rain (ml g⁻¹) at location A, to 17.10% at location B, and 21.02% at location C. Similarly for P. abies the S was 21.78%, 29.06% and 34.36% at locations A, B and C respectively.The study extends the knowledge of the mechanisms of plant surface adhesion and the anthropogenic factors that may modify this process as well as foliage properties.
Show more [+] Less [-]Reduced climate sensitivity of carbon, oxygen and hydrogen stable isotope ratios in tree-ring cellulose of silver fir (Abies alba Mill.) influenced by background SO2 in Franconia (Germany, Central Europe)
2014
Boettger, Tatjana | Haupt, Marika | Friedrich, Michael | Waterhouse, John S.
The climate sensitivity of carbon (δ13C), oxygen (δ18O) and hydrogen (δ2H) isotope signatures in tree-ring cellulose of Abies alba Mill. from a marginally industrialized area of Franconia (Germany) was analysed for the last 130 years. All isotopes preserve climatic signals up to c. 1950 AD. After 1950 we observe a clear reduction in climate sensitivity of δ13C and δ2H while δ18O – climate relations remain well pronounced. Nevertheless statistical tests implied that SO2 background emissions of West Germany had influenced isotope signatures long before 1950. The relationships between isotope values and concentrations of SO2, dust, O3 and NO2 at the regional level during the period 1979–2006 indicate that δ13C and δ18O were influenced primarily by SO2. The impact of SO2 on δ2H was negligible, but the observed reduction of climate sensitivity may be caused by synergic influences. The results have significant implications if isotope signatures from tree-rings from anthropogenic influenced regions are used to reconstruct past climate.
Show more [+] Less [-]Air pollution status of the Bulgarian Govedartsi ecosystem
1997
Zeller, K. | Donev, E. | Bojinov, H. | Nikolov, N. (Rocky Mountain Forest and Range Experiment Station, USDA Forest Service, Ft. Collins, CO (USA))
Polish mountain forests: past, present and future
1997
Grodzinska, K. | Szarek-Lukaszewska, G. (W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Krakow (Poland))
Performance of some growth variables
1990
Billen, N. | Schatzle, H. | Seufert, G. | Arndt, U. (Institut fur Landeskultur und Pflanzenokologie, Fachgebiet Pflanzenokologie, Universitat Hohenheim, W-7000 Stuttgart 70 (Germany))
CO(2)/H(2)O gas exchange parameters of one- and two-year-old needles of spruce and fir
1990
Schweizer, B. | Arndt, U. (Institut fur Landeskultur und Pflanzenokologie, Fachgebiet Pflanzenokologie, Universitat Hohenheim, W-7000 Stuttgart 70 (Germany))
Visible injury responses
1990
Arndt, U. | Billen, N. | Seufert, G. | Ludwig, W. | Borkhart, K. | Ohnesorge, B. (Institut fur Landeskultur und Pflanzenokologie, Universitat Hohenheim, W-7000 Stuttgart 70 Hohenheim (Germany))
Effects of SO2 on the germination of conifer pollen
1984
Keller, T. | Beda, H. (Swiss Fed. Inst. For. Res., Birmensdorf (Switzerland))