scholarly journals Syntaxonomical update on the relict groves of Scots pine (Pinus sylvestris var. iberica) and Spanish black pine (Pinus nigra subsp. salzmannii) in the Gredos range (central Spain)

Lazaroa ◽  
2016 ◽  
Vol 37 (0) ◽  
Author(s):  
José Antonio López Sáez ◽  
Daniel Sánchez-Mata ◽  
Rosario G. Gavilán
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Pinus Nigra ◽  
Black Pine ◽  
Central Spain

scholarly journals Growth and Survival Variation among Scots Pine (Pinus sylvestrisL.) Provenances

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Süleyman Gülcü ◽  
Nebi Bilir
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Native Species ◽  
Tree Height ◽  
Pinus Nigra ◽  
Black Pine ◽  
Basal Diameter ◽  
Growth And Survival ◽  
Seed Sources ◽  
Provenance Test

Tree height, basal diameter, and survival were examined in thirteen-year-old provenance test established by 30 seed sources of Scots pine (Pinus sylvestrisL.) at two exotic sites of the species in Southern part of Turkey. Variations within provenance and among provenances and relations among the traits were estimated to compare Scots pine provenance and two other native species. Averages of tree height and basal diameter were 350 cm and 52.7 mm in Aydogmus site and 385 cm and 51.2 mm in Kemer site, respectively. There were large differences within and among provenances for the characters. Sites were similar (p>0.05) for the characters, while there were significant differences (p≤0.05) among provenances within site according to results of variance analysis (ANOVA). Scots pine provenances were higher and had more thickness than that of black pine (Pinus nigraArnold) and Taurus cedar (Cedrus libaniA. Rich.) which were natural species of the region. There were positive and significant (p<0.05) correlations between height and basal diameter in the species. Average survivals were 56% and 35% of the provenances in the sites. They were 71% and 11% in black pine and 53% in Taurus cedar for the sites respectively.

Effect of heat on seed germination of Pinus sylvestris and Pinus nigra ssp. pallasiana

2006 ◽  
Vol 15 (2) ◽  
pp. 283 ◽  
Author(s):  
Ibrahim Turna ◽  
Ertugrul Bilgili
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Present Note ◽  
Sharp Decrease ◽  
Pinus Nigra ◽  
Black Pine ◽  
Crown Cover ◽  
And Control ◽  
Positive Effect ◽  
Anatolian Black Pine

The present note presents and explains the results of a study dealing with the germination of seeds subjected to heat. Seeds of Scots pine (Pinus sylvestris L.) and Anatolian black pine (Pinus nigra ssp. pallasiana) were exposed to a range of temperatures (70, 90, 110, 130, and 150°C) for different exposure times (1 and 5 min). Germination rates were similar for all treatments and control at 1 min exposure for Anatolian black pine seeds, and almost no germination took place for all treatments at 5 min exposure. Similar results were obtained for Scots pine seeds, with the exception of a sharp decrease in the number of seeds germinated above 110°C. The effect of increasing the exposure time to 5 min was immediate, and no germination took place above 90°C. Results obtained indicate that seeds of the two species do not necessarily need fire for successful regeneration, but fires may have a positive effect on the germination by removing crown cover, thereby providing more light for the seeds deposited to the ground.

scholarly journals Application of various statistical methods to analyze genetic diversity of Austrian (Pinus nigra Arn.) and Scots pine (Pinus sylvestris L.) based on protein markers

Genetika ◽  
2011 ◽  
Vol 43 (3) ◽  
pp. 477-486 ◽  
Author(s):  
Aleksandar Lucic ◽  
Vasilije Isajev ◽  
Ljubinko Rakonjac ◽  
Milan Mataruga ◽  
Vojka Babic ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Pinus Sylvestris ◽  
Statistical Methods ◽  
Scots Pine ◽  
Correspondence Analysis ◽  
Pinus Nigra ◽  
Genetic Distances ◽  
Protein Markers ◽  
Observation Units ◽  
Precise Understanding

This paper presents the results of studies on protein polymorphism in seeds of Scots pine (Pinus sylvestris L.) and Austrian pine (Pinus nigra Arn.) as the most important economic species of the genus Pinus in Serbia. Polymorphism of protein markers was determined in selected genotypes originating from seven populations (Scots pine) and six populations (Austrian pine). Analysis of protein markers was performed using two statistical methods, NTSYS and correspondence analysis. Both methods give the same arrangement of the analyzed populations, whereby, because of a different view of genetic distances, they can and should be combined, enabling easier and more precise understanding of mutual relationships of the observation units.

Late Holocene pinewoods persistence in the Gredos Mountains (central Spain) inferred from extensive megafossil evidence

2015 ◽  
Vol 84 (1) ◽  
pp. 12-20 ◽  
Author(s):  
Juan M. Rubiales ◽  
Mar Génova
Keyword(s):  
Pinus Sylvestris ◽  
Iberian Peninsula ◽  
Entire Range ◽  
Radiocarbon Dating ◽  
Late Holocene ◽  
Forest Cover ◽  
Pinus Nigra ◽  
Central Spain ◽  
Pine Cones ◽  
Middle And Late Holocene

Macro- and megafossil studies are of great value in palaeoecology because such evidence is spatially precise, directly radiocarbon dated, and usually taxon-specific. Here, we present new macro- and megafossil data from ten sites from the Gredos Mountains, central Iberian Peninsula, that suggest persistent forest cover through the late Holocene, with a widespread belt of pinewoods in the highlands of the Central Iberian Mountains. Well-preserved pine cones found at several sites revealed that bothPinus sylvestrisandPinus nigrawere present in the area during the middle and late Holocene at locations of important biogeographical interest. TheP. sylvestrisforests represent one of the southernmost locations of its entire range.P. nigrawas not known to have occurred in central Spain during the Holocene; it was found at the westernmost edge of its range in siliceous soils, a rare environment compared with the rest of its distribution. Finally, we explored the potential for obtaining a long pine chronology from central Iberia using tree-ring measurements and radiocarbon dating of pine subfossil logs.

scholarly journals Identification and Status of the Introduced Black Pine, Pinus nigra, and Mugo Pine, Pinus mugo, in Ontario

2005 ◽  
Vol 119 (2) ◽  
pp. 224 ◽  
Author(s):  
Paul M. Catling
Keyword(s):  
Pinus Sylvestris ◽  
Native Species ◽  
Negative Impact ◽  
Substantial Reduction ◽  
Pinus Nigra ◽  
Black Pine ◽  
Pinus Mugo ◽  
Natural Habitats ◽  
Southern Ontario ◽  
Impact On Biodiversity

Recent reference texts and other sources are contradictory regarding the spread of Pinus nigra and Pinus mugo from cultivation in Ontario. Both species have reproduced from plantings along roadsides but neither has been observed to occupy habitats in Ontario to the substantial reduction or exclusion of native species, or to substantially invade natural habitats. The more widely planted Black Pine has been recorded spreading at 24 localities throughout the eastern part of southern Ontario. Mugo Pine is reported spreading at 18 locations. Although evidently much less aggressive than Scots Pine (Pinus sylvestris), both Black and Mugo pines have a potential for negative impact on biodiversity in dry, rocky or sandy habitats, especially in connection with extensive plantings. A key for the identification of two-needle pines is included. Both P. nigra and P. mugo are highly variable and reported to hybridize extensively with other species.

scholarly journals Onset of canopy closure for black pine, Turkish red pine and Scots pine forests

2018 ◽  
Vol 64 (No. 5) ◽  
pp. 224-229 ◽  
Author(s):  
Kara Ferhat ◽  
Topaçoğlu Osman
Keyword(s):  
Scots Pine ◽  
Basal Area ◽  
Stand Density ◽  
Pinus Nigra ◽  
Red Pine ◽  
Pine Forests ◽  
Canopy Closure ◽  
Black Pine ◽  
Scots Pine Forests ◽  
Turkish Red Pine

Canopy closure plays an important role in regeneration and management activities in forestry. Thus, determining the density at which canopy closure occurs is important for the success of silvicultural treatments. Turkish red pine (Pinus brutia Tenore), black pine (Pinus nigra J.F. Arnold) and Scots pine (Pinus sylvestris Linnaeus) forests are usually managed at a density that is near or below the canopy closure. Residual stand density during the management of these species is commonly described by stand basal area – BA (m<sup>2</sup>·ha<sup>–1</sup>), however, the BA levels for the canopy closure have not been clearly indicated for these species. The minimum density for the onset of canopy closure (D<sub>OCC</sub>) was determined for Turkish red pine, black pine and Scots pine forests in this study. D<sub>OCC</sub> values were compared across the species. For the D<sub>OCC</sub>, the maximum tree area that a tree can occupy under open-grown conditions was used. The D<sub>OCC</sub> curves of black pine and Scots pine seem to be similar, but the canopy closure in Turkish red pine forests occurs with fewer trees per hectare for a given mean tree diameter. According to the D<sub>OCC</sub> curves, regeneration and tending activities will be more practical and effective in these forests.

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