scholarly journals Timber grading of Pinus uncinata , a lesser known pine species from the pyrenean mountain range

2019 ◽  
pp. 0-0
Author(s):  
Agnès Burgers ◽  
Cédric Montero ◽  
Jordi Gené Sera ◽  
Marcel Vilches Casals ◽  
Eduard Correal Modol ◽  
...  
Keyword(s):  
Mountain Range ◽  
Pinus Uncinata ◽  
Pine Species

scholarly journals Additive biomass equations for pine species of forest plantations of Durango, Mexico

2016 ◽  
Vol 10 (2) ◽  
pp. 17-28 ◽  
Author(s):  
José de Jesús Návar Cháidez ◽  
Nicolás González Barrientos ◽  
José de Jesús Graciano Luna ◽  
Virginia Dale ◽  
Bernard Parresol
Keyword(s):  
Multiple Regression ◽  
Linear Equations ◽  
Seemingly Unrelated Regression ◽  
Multiple Regression Equation ◽  
Biomass Estimation ◽  
Mountain Range ◽  
Data Set ◽  
Biomass Equations ◽  
Biomass Component ◽  
Pine Species

Statistical analysis between three weighted additive biomass equations are presented for planted pine species typical of the coniferous forests of the Western Sierra Madre mountain range of Durango, Mexico. Statistical and graphical analyses were used to select the best single and multiple individual biomass component equation. Linear equations better fitted the biomass components. Therefore, three linear additive procedures were tested: (i) the conventional, (ii) a harmonization, and ( iii) the seemingly-unrelated regression in two types of equations of component biomass estimation using both simple regression and multiple regression techniques. These tests were performed at two scales: (a) each of three pine species and (b) all three species. For both the simple linear and best multiple regression equation, the seemingly-unrelated equations provided more precise biomass component estimates, with tendencies consistent with the conventional non-additive non-linear regression procedures, and provided average biomass component estimates when equations were applied to a data set of 23 sample quadrants.

scholarly journals Needle water potential of selected pine species during the off-season: A case study

2017 ◽  
Vol 63 (No. 1) ◽  
pp. 16-21
Author(s):  
Tomášková Ivana ◽  
Vítámvás Jan ◽  
Bažant Václav
Keyword(s):  
Water Potential ◽  
Pinus Ponderosa ◽  
Global Radiation ◽  
Pinus Nigra ◽  
Pinus Cembra ◽  
Ecological Variability ◽  
Pinus Uncinata ◽  
Needle Water Potential ◽  
Pine Species

In this study we investigated the needle water potential of different pine species using a pressure chamber during winter months. Totally, seven pine species Pinus jeffreyi Greville &amp; Balfour, Pinus ponderosa P. &amp; C. Lawson, Pinus uncinata Ramond ex de Candolle, Pinus nigra Arnold, Pinus sylvestris Linnaeus, Pinus heldreichii Christ, Pinus cembra Linnaeus representing ecological variability of this genus were selected for measurements. Although the water potential is well documented in many tree species during the vegetation season, data from the off-season are scarce. During the investigated seasons (November 2014, January and February 2016), days with air temperature (T) above and below 0°C were selected for the measurement. During the days with air T above 0°C and global radiation reaching 3,000 kJ·m<sup>–2</sup>·day<sup>–1</sup>, the water potential averaged –0.6 ± 0.4 MPa. On the contrary, under T below 0°C and global radiation above 6,000 kJ·m<sup>–2</sup>·day<sup>–1</sup>, the needle water potential was close to zero (–0.3 ± 0.2 MPa) regardless of the pine species. The reason why the needle water potential reflects air T and is negatively correlated with the global radiation in winter will be an objective of our future investigations.

Introduction to Cell Membranes at Molecular Resolution

1978 ◽  
Vol 36 (3) ◽  
pp. 497-502
Author(s):  
R.J. Barrnett
Keyword(s):  
Cell Membranes ◽  
International Federation ◽  
Mountain Range ◽  
Cellular Membranes ◽  
Short History ◽  
Biological Organization ◽  
Macromolecular Assemblies ◽  
The Past

This subject, is like observing the panorama of a mountain range, magnificent towering peaks, but it doesn't take much duration of observation to recognize that they are still in the process of formation. The mountains consist of approaches, materials and methods and the rocky substance of information has accumulated to such a degree that I find myself concentrating on the foothills in the foreground in order to keep up with the advance; the edifices behind form a wonderous, substantive background. It's a short history for such an accumulation and much of it has been moved by the members of the societies that make up this International Federation. My panel of speakers are here to provide what we hope is an interesting scientific fare, based on the fact that there is a continuum of biological organization from biochemical molecules through macromolecular assemblies and cellular membranes to the cell itself. Indeed, this fact explains the whole range of towering peaks that have emerged progressively during the past 25 years.

Red Heart Disease in Pines Caused by Porodaedalea (Phellinus) pini in Florida

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. 3
Author(s):  
Yin-Tse Huang ◽  
Jeffrey Eickwort ◽  
Jiri Hulcr
Keyword(s):  
Heart Disease ◽  
Forest Resources ◽  
Fact Sheet ◽  
Cavity Nesting ◽  
Pine Species

All pine species in Florida are susceptible to red heart disease. The disease can decrease timber value and weaken trees, making them threats to people and property. In forests, however, the same disease can be beneficial to cavity-nesting animals like red-cockaded woodpeckers. This 3-page fact sheet written by Yin-Tse Huang, Jeffrey Eickwort, and Jiri Hulcr and published by the UF/IFAS School of Forest Resources and Conservation describes the disease and provides some tips to manage it in areas where it could cause problems for people.http://edis.ifas.ufl.edu/fr425

Abundance of canids and human canid conflict in the Hindu Kush Mountain range of Pakistan

2013 ◽  
Vol 9 (2) ◽  
Author(s):  
Jaffar Ud Din ◽  
Shoaib Hameed ◽  
Khurshid Ali Shah ◽  
Muhammad Ayub Khan ◽  
Siraj Khan ◽  
...  
Keyword(s):  
Mountain Range ◽  
Hindu Kush

The genus Pilophorus (Cladoniaceae) in Primorye Territory

2011 ◽  
Vol 45 ◽  
pp. 215-218
Author(s):  
I. F. Skirina ◽  
F. V. Skirin
Keyword(s):  
Additional Data ◽  
Lichen Species ◽  
Mountain Range ◽  
Sikhote Alin

The work contains new and additional data on distribution of two rare lichen species of the genus Pilophorus, P. cereolus and P. clavatus, in Primorye Territory (Sikhote-Alin mountain range).

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