نتایج جستجو برای: quercus

تعداد نتایج: 6897  

Journal: :annales des sciences forestières 1993

2015
Satoshi Yamashita Hayato Masuya Shin Abe Takashi Masaki Kimiko Okabe Ligia O Martins

We examined the relationship between the community structure of wood-decaying fungi, detected by high-throughput sequencing, and the decomposition rate using 13 years of data from a forest dynamics plot. For molecular analysis and wood density measurements, drill dust samples were collected from logs and stumps of Fagus and Quercus in the plot. Regression using a negative exponential model betw...

2014
Pamela G Thompson Peter E Smouse Douglas G Scofield Victoria L Sork

Background: Foraging movements of animals shape their efficiency in finding food and their exposure to the environment while doing so. Our goal was to test the optimal foraging theory prediction that territorial acorn woodpeckers (Melanerpes formicivorus) should forage closer to their ‘central place’ in years of high resource availability and further afield when resources are less available. We...

Journal: :Journal of environmental monitoring : JEM 2009
Débora Pérez-Rial Josep Peñuelas Purificación López-Mahía Joan Llusià

Isoprene and monoterpenes emission fluxes emitted by Quercus robur seedlings were measured at a leaf scale in the field. Isoprene emissions were always predominant over the monoterpene ones, alpha-pinene, beta-pinene and camphene being the most abundant emitted monoterpenes. Emission fluxes were normalised at standard conditions of temperature and photosynthetically active radiation, PAR, (30 d...

2014
Mahnaz Khanavi Mansoureh Sabbagh-Bani-Azad Amir Hossein Abdolghaffari Mahdi Vazirian Isa Isazadeh Mohammad Amin Rezvanfar Maryam Baeeri Azadeh Mohammadirad Roja Rahimi Mohammad Reza Shams-Ardekani Mohammad Abdollahi

INTRODUCTION In this study we investigated the effect of gall of Quercus brantii Lindl., a traditional Iranian medicine, in a murine model of experimental colitis induced in male rats by rectal administration of 2,4,6-trinitrobenzene sulfonic acid (TNBS). MATERIAL AND METHODS Quantification of the main active components was done for estimation of total phenolic content and free gallic acid. G...

Journal: :Österreichische botanische Zeitschrift 1868

Journal: :Chemistry of Natural Compounds 1972

Journal: :annales des sciences forestières 1993

Journal: :Botanical Gazette 1899

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