Comparative Wood Anatomy of Pinus Sylvestris and Its Var. Compacta in the West Black Sea Region of Turkey

IAWA Journal ◽  
2007 ◽  
Vol 28 (1) ◽  
pp. 75-82 ◽  
Author(s):  
Barbaros Yaman
Keyword(s):  
Pinus Sylvestris ◽  
Wood Anatomy ◽  
Ground Level ◽  
The West ◽  
Black Sea Region ◽  
Anatomical Features ◽  
The Common ◽  
Anatomical Properties ◽  
Comparative Wood Anatomy ◽  
West Black Sea Region

Pinus sylvestris L. subsp. hamata (Steven) Fomin var. compacta Tosun is quite different from the common form of P. sylvestris in its external morphology. The size of the needles, cones and seeds of the former are significantly smaller than those of the latter. Besides, this variety branches out beginning from the ground level, and has very dense branches and needles. The present study describes the anatomical properties of the wood of P. sylvestris var. compacta and compares them with typical P. sylvestris. The woods of these taxa have the same qualitative anatomical features, but most of the quantitative anatomical characteristics show significant differences: variety compacta has lower values than common P. sylvestris in tracheid length and diameter, ray height and bordered pit diameter.

Seroprevalence of Q fever in a district located in the west Black Sea region of Turkey

2010 ◽  
Vol 29 (4) ◽  
pp. 465-469 ◽  
Author(s):  
A. Gozalan ◽  
J. M. Rolain ◽  
M. Ertek ◽  
E. Angelakis ◽  
N. Coplu ◽  
...  
Keyword(s):  
Black Sea ◽  
Q Fever ◽  
The West ◽  
Black Sea Region ◽  
West Black Sea ◽  
West Black Sea Region

scholarly journals Landslide susceptibility assessment of SE Bartin (West Black Sea region, Turkey) by artificial neural networks

2005 ◽  
Vol 5 (6) ◽  
pp. 979-992 ◽  
Author(s):  
M. Ercanoglu
Keyword(s):  
Black Sea ◽  
Landslide Susceptibility ◽  
Landslide Inventory ◽  
The West ◽  
Data Set ◽  
Black Sea Region ◽  
Landslide Inventory Map ◽  
Inventory Map ◽  
West Black Sea ◽  
West Black Sea Region

Abstract. Landslides are significant natural hazards in Turkey, second only to earthquakes with respect to economic losses and casualties. The West Black Sea region of Turkey is known as one of the most landslide-prone regions in the country. The work presented in this paper is aimed at evaluating landslide susceptibility in a selected area in the West Black Sea region using Artificial Neural Network (ANN) method. A total of 317 landslides were identified and mapped in the area by extensive field work and by use of air photo interpretations to build a landslide inventory map. A landslide database was then derived automatically from the landslide inventory map. To evaluate landslide susceptibility, six input parameters (slope angle, slope aspect, topographical elevation, topographical shape, wetness index, and vegetation index) were used. To obtain maps of these parameters, Digital Elevation Model (DEM) and ASTER satellite imagery of the study area were used. At the first stage, all data were normalized in [0, 1] interval, and parameter effects on landslide occurrence were expressed using Statistical Index values (Wi). Then, landslide susceptibility analyses were performed using an ANN. Finally, performance of the resulting map and the applied methodology is discussed relative to performance indicators, such as predicted areal extent of landslides and the strength of relation (rij) value. Much of the areal extents of the landslides (87.2%) were classified as susceptible to landsliding, and rij value of 0.85 showed a high degree of similarity. In addition to these, at the final stage, an independent validation strategy was followed by dividing the landslide data set into two parts and 82.5% of the validation data set was found to be correctly classified as landslide susceptible areas. According to these results, it is concluded that the map produced by the ANN is reliable and methodology applied in the study produced high performance, and satisfactory results.

Comparative Wood Anatomy of Southern South American Cupressaceae

IAWA Journal ◽  
1992 ◽  
Vol 13 (2) ◽  
pp. 151-162 ◽  
Author(s):  
Fidel A. Roig
Keyword(s):  
Wood Anatomy ◽  
Parenchyma Cell ◽  
Interspecific Variation ◽  
South American ◽  
Distributional Pattern ◽  
Axial Parenchyma ◽  
Anatomical Features ◽  
Ray Parenchyma ◽  
Comparative Wood Anatomy ◽  
Fitzroya Cupressoides

The wood anatomy is described for the Cupressaceae indigenous to southem South America: Austrocedrus chilensis, Pilgerodendron uviferum and Fitzroya cupressoides. The abundance and distributional pattern of axial parenchyma within each annual ring, height, and the presence or absence of nodules in the end walls of ray parenchyma are all useful anatomical features for distinguishing between the three species. Physical characteristics such as odour and heartwood colour also can be used to separate these species. Axial parenchyma cell length and tracheid length show considerable interspecific variation. Tracheid lengths of Pilgerodendron, but not of Austrocedrus and Fitzroya, decrease with increasing latitude.

scholarly journals Effects of some watershed characteristics on water yield in the West Black Sea Region of northern Turkey

2017 ◽  
Vol 38 (3) ◽  
pp. 479-486
Author(s):  
Hayati Zengin ◽  
Mehmet Özcan ◽  
Ahmet Salih Degermenci ◽  
Tarik Citgez
Keyword(s):  
Black Sea ◽  
Water Yield ◽  
The West ◽  
Watershed Characteristics ◽  
Black Sea Region ◽  
West Black Sea ◽  
West Black Sea Region

Wood Anatomy of Three Lesser Known Species from Mozambique

IAWA Journal ◽  
2009 ◽  
Vol 30 (3) ◽  
pp. 277-291 ◽  
Author(s):  
Ernesto Uetimane Junior ◽  
Nasko Terziev ◽  
Geoffrey Daniel
Keyword(s):  
Wood Species ◽  
Wood Anatomy ◽  
Wood Properties ◽  
Natural Durability ◽  
Ground Tissue ◽  
Anatomical Features ◽  
Ray Parenchyma ◽  
Thin Walled ◽  
Comparative Wood Anatomy ◽  
Diffuse Porous

Three lesser known wood species from Mozambique were studied to generate information for identification purposes and facilitate the introduction of these species into the wood working industry by assigning or widening the potential uses of these species. Selected anatomical features were used to predict some important wood properties, subsequently confirmed by measurements of both density and impregnability. Comparative wood anatomy showed that all three wood species have anatomical features typical for their genus after comparisons with their closest relatives. Both ntholo (Pseudolachnostylis maprounaefolia Pax) and muanga (Pericopsis angolensis Meeuwen) are diffuse-porous (with 14–24 and 16–20 vessels/mm2 respectively), have extractives in the heartwood vessels and thick-walled fibres, features consistent with good natural durability and strength respectively. Metil (Sterculia appendiculata K. Schum.) is also diffuse-porous with very wide vessels at much lower frequency (<5/mm2), it lacks extractives in the heartwood vessels, and thin-walled axial and ray parenchyma constitutes the bulk of the ground tissue. This set of characteristics makes the wood light and satisfactory for construction purposes but highly vulnerable to biodegradation.

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