Results 191 to 200 of about 200,242 (232)
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Mycorrhizal morphotypes of Scots pine
1998The significance of the ectomycorrhizal symbiosis for temperate forest stability is stressed by several authors (Read, 1991; Vogt et al., 1991; Dighton, 1995). In the presence of mycorrhizae litter decomposition is faster and release of nutrients from the litter is higher than in the absence of mycorrhizae (Zhu and Ehrenfeld, 1996).
B. Münzenberger, R. F. Hüttl
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Hydraulic architecture of Scots pine
1998The hydraulic architecture of plants is controlled by internal and external variables like, inter alia, species (Huber, 1928; Zimmermann, 1978; Yang and Tyree, 1993), genotype (Neufeld et al., 1992), competition (Sellin, 1993), site fertility (Espinosa-Banclari et al., 1987; Long and Smith, 1989), stand management (Pothier and Margolis, 1988), climate (
S. Rust, D. Lüttschwager, R. F. Hüttl
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ACCUMULATION OF SULPHUR IN AND ON SCOTS PINE NEEDLES IN THE SUBARCTIC
Water, Air, and Soil Pollution, 1997Total S concentrations of Scots pine (Pinus sylvestris L.) needles studied in the Finnish subarctic (66–70°N, 24–30°E) in 1990/1992 ranged from 573 to 1153 μg g−1 Levels were found to be ∼ 900 μg g−1 (i.e. 1.3–1.8 times the ‘normal’ level of 500–700 μg g−1 in areas where the long-term ambient SO2 concentration was ∼ 2–5 μg m−3, particulate SO
Sirkku Manninen +2 more
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Spatial and temporal ecology of Scots pine ectomycorrhizas
New Phytologist, 2010Spatial analysis was used to explore the distribution of individual species in an ectomycorrhizal (ECM) fungal community to address: whether mycorrhizas of individual ECM fungal species were patchily distributed, and at what scale; and what the causes of this patchiness might be.
Pickles, B. J. +5 more
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Effect of the Pine Needle Scale on Photosynthesis of Scots Pine
Forest Science, 1973Abstract An examination of the feeding sites of pine needle scale on Scots pine revealed that the insects' stylets enter the needle through stomata and terminate in the mesophyll tissue. Chlorotic bands result from this feeding, and photosynthesis is reduced. Forest Sci. 19:109-111.
John D. Walstad +2 more
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Seasonal development of phloem in scots pine stems
Russian Journal of Developmental Biology, 2006The formation of phloem was studied for two years in stems of 50 to 60 year old trees of Scots pine (Pinus sylvestris L.) growing in nature. The development of phloem of the current year begins 10 to 20 days before the xylem formation and is completed with the termination of shoot growth in the end of June.
G F, Antonova, V V, Stasova
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Evaporative demand determines branchiness of Scots pine
Oecologia, 1995Analysis of the branch area/stem area ratio of Scots pine growing in different climatic conditions in Europe and Siberia indicates that the branch area supported by a stem increases in warmer and drier conditions. The ratio was significantly correlated with several climatic variables, especially with potential evapotranspiration (E p).
F, Berninger +4 more
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Needle area relationships of Scots pine in the Netherlands
Forest Ecology and Management, 1993Abstract To analyse the foliage area characteristics of Scots pines of different sizes, 12 trees were selected out of 4 stands of different ages. From the selected trees, total needle area and needle area distribution were estimated from branch samples. Stem discs were collected to determine sapwood area at breast height.
van Hees, A.F.M., Bartelink, H.H.
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Growth analysis of Scots pine and lodgepole pine seedlings
Forest Ecology and Management, 1996Abstract Possible reasons for the superior growth rate of lodgepole pine (LP) (Pinus contorta Dougl. var. latifolia Engelm.) compared to Scots pine (SP) (Pinus sylvestris L.) were investigated in a trial where the species were grown in large pots with sand, till or topsoil, during 4 years following sowing.
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