Results 81 to 90 of about 149,587 (310)

Investigation on the utilization of papolar clones grown on Short - rotation age (three years) for particleboard production [PDF]

تحقیقات علوم چوب و کاغذ ایران, 1998
ه منظور ساخت تخته خرده چوب از گونه های مختلف صنوبر تولید شده در دوره سه ساله 17 کلن از گونه های مختلف در ایستگاه البرز کرج انتخاب شده و یک نمونه شاهد از گونه راش (جمعا 18 ترکیب) و از هر تیمار 4 تخته و در کل 72 نمونه آزمونی ساخته شده است.
Abdolrahman Hosseinzadeh, Amir Nourbakhsh, Fardad Golbabaei   +2 more
doaj   +1 more source

Biology of the Genus \u3ci\u3eHemileuca\u3c/i\u3e (Lepidoptera: Saturniidae) in Michigan [PDF]

, 2017
The habitats and host plants of buckmoths (Hemileuca: Saturniidae: Hernileucinae) in Michigan are described and compared to those of the three species known from eastern North America, H. maia, H. nevadensls, and H. lucina.
Scholtens, Brian G, Wagner, Warren H, Jr.   +1 more
core   +2 more sources

Meander‐Bend Erosion Dynamics Along a Gravel‐Bed River: Insights From Short‐Term UAV Monitoring

River Research and Applications, EarlyView.
ABSTRACT Riverbank erosion is a natural process in meandering rivers that contributes to sediment supply and geomorphic diversity, yet it can threaten infrastructure and human activities within the floodplain. Recently, many studies have used high‐resolution remote sensing technologies to measure bank erosion, but they often focus on technical aspects ...
Katarina Pavlek, Mateo Gašparović, Tomáš Galia   +2 more
wiley   +1 more source

Nitrogen forms affect root structure and water uptake in the hybrid poplar [PDF]

, 2011
The study analyses the effects of two different forms of nitrogen fertilisation (nitrate and ammonium) on root structure and water uptake of two hybrid poplar (Populus maximowiczii x P. balsamifera) clones in a field experiment.
A Clemensson-Lindell, A Hodge, A Karacic, AH Fitter, AH Fitter, B Huang, C Glynn, CC Kern, Christian Messier, D Guo, DA Rose, DI Dickmann, DM Eissenstat, DM Eissenstat, E Salas, F Ripullone, Frank Berninger, GA Bauer, GB West, H Coners, H Ozier-Lafontaine, H Poorter, HP Harvey, HP Harvey, J Lopez-Bucio, J Lynch, JA Parkinson, JEK Cooke, JS King, JS King, KS Pregitzer, KS Pregitzer, KS Pregitzer, L Coll, Lluís Coll, M Noordwijk van, MD Coleman, P Armengaud, R Driesche Van den, R Fujimaki, RMA Block, S Delagrange, Susy Domenicano, T Ericsson, T Sakuratani, TJ Albaugh, WTM Woolfolk, X Min   +47 more
core   +2 more sources

Commodity risk assessment of Populus alba, Populus nigra and Populus tremula plants from the UK

EFSA Journal
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High risk plants, plant products and other objects’. This Scientific Opinion covers plant health risks posed by plants of Populus alba, Populus nigra and ...
EFSA Panel on Plant Health (PLH), Vicent Civera, Antonio, Baptista, Paula, Berlin, Anna, Chatzivassiliou, Elisavet, Cubero, Jaime, Cunniffe, Nik, de la Peña, Eduardo, Desneux, Nicolas, Di Serio, Francesco, Filipiak, Anna, Hasiów-Jaroszewska, Beata, Jactel, Hervé, Landa, Blanca B, Maistrello, Lara, Makowski, David, Milonas, Panagiotis, Papadopoulos, Nikos, Potting, Roel, Susi, Hanna, van Der Gaag, Dirk Jan, Battisti, Andrea, Bragard, Claude, Magnusson, Christer Sven, Mas, Hugo, Rigling, Daniel, Faccoli, Massimo, Mikulová, Alžběta, Stergulc, Fabio, Christoph, Eugen, Mosbach-Schulz, Olaf, Streissl, Franz, Gonthier, Paolo   +32 more
openaire   +4 more sources

Hyperspectral species maps and LiDAR‐based structured population models show future forest fire frequency may compromise forest resilience

Remote Sensing in Ecology and Conservation, EarlyView.
Monitoring forest recovery from disturbances at scale requires tracking tree dynamics, yet traditional ground‐based approaches are resource‐intensive. We present a pipeline to parameterize integral projection models (IPMs) using LiDAR data and hyperspectral‐based species maps to assess post‐fire recovery across large, forested areas at the Caribou ...
Jessica McLean, Tommaso Jucker, Alice Rosen, Sean M. McMahon, Roberto Salguero‐Gómez   +4 more
wiley   +1 more source

Classification of tree species and standing dead trees in Boreal forests using UAV‐based RGB, multispectral, and LiDAR point clouds

Remote Sensing in Ecology and Conservation, EarlyView.
We evaluated single‐ and multi‐sensor UAV approaches for classifying tree species and standing dead trees in boreal forests, focusing on key biodiversity indicators such as European aspen. Using spectral and structural features extracted from RGB, multispectral (MSP), and LiDAR point clouds for 1,205 field‐measured trees, we compared classification ...
Anton Kuzmin, Lauri Korhonen, Topi Tanhuanpää, Mikko Kukkonen, Matti Maltamo, Timo Kumpula   +5 more
wiley   +1 more source

Vegetation, Ökosystemdynamik und Renaturierung von zentralasiatischen Flussauen am Beispiel des Tarim in Xinjiang, NW-China [PDF]

, 2013
Naturally, the floodplains of Central Asian rivers harbour riparian, so-called ‘Tugai’ forests, reeds with Phragmites australis, and shrub communities which form a mosaic depending on the variety of available ground water.
Kühnel, Elfi, Thevs, Niels, Zerbe, Stefan   +2 more
core  

Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects

Wildlife Biology, EarlyView.
Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer, Erlend Furuhovde, Kristoffer Nordli, Giorgia Myriam Ausilio, Petter Wabakken, Ane Eriksen, Alina L. Evans, Karen Marie Mathisen, Barbara Zimmermann   +8 more
wiley   +1 more source

La Crise de 19 a. C. et ses conséquences

Gerión, 2005
The determination of M. Egnatius Rufus to aspire to the consulate for the year 19 a.C., with the support from a part the populus romanus, called into question the consensus which maked it possible for Augustus to be the Princeps.
Céline de Jonquieres
doaj   +2 more sources