نتایج جستجو برای: betulaceae

تعداد نتایج: 189  

Journal: :Diversity 2023

As the oldest species of Betulaceae, Nepalese alder (Alnus nepalensis) shows a high capacity for nitrogen fixation, rapid growth rate, and strong adaptability to stress environments, it plays an important role in maintaining structure function forest agroforestry ecosystems. We explored its geographic distribution corresponding environmental drivers through collecting specimen records published...

Journal: :Asian Journal of Pharmaceutical and Clinical Research 2021

Objectives: Infectious diseases caused by bacteria are a leading cause of death worldwide. Hence, the objectives study aimed to evaluate antibacterial activity against five human pathogenic methanolic extracts from 66 plants collected Vietnam.
 Methods: The broth microdilution method was used determine minimum inhibitory concentration (MIC) methanol plant species bacterial strains.
 R...

2004
Steven R. Manchester Kathleen B. Pigg Peter R. Crane

Palaeocarpinus dakotensis Manchester, Pigg, et Crane sp.n. (Coryloideae, Betulaceae) is described from the Late Paleocene Almont and Beicegel Creek floras of North Dakota based on infructescences with associated staminate catkins, pollen, and leaves. The well-preserved, silica-permineralized specimens provide both anatomical and morphological data for this widely distributed genus of the Northe...

Journal: :Landscape and Urban Planning 2022

The biodiversity of mycorrhizal and wood-inhabiting macrofungi (basidiomycetes) is declining, many species are threatened in forests. Based on data from a 30-year fruiting body survey 1988 to 2017 the region city Jena (100,000 inhabitants, 4500 ha forest), Germany, we evaluated role urban environment with variation ownership, property size, associated management, high diversity woody for presen...

Journal: :Arhiv za higijenu rada i toksikologiju 2013
Magdalena Sikora Marina Valek Zdenka Šušić Vera Santo Dario Brdarić

The forests of north-eastern Croatia, as well as various plants and trees in the parks and streets of the Osijek-Baranja County, produce large amounts of pollen during the pollen season, which can cause allergy symptoms in pollen sensitive individuals. The aim of this study was to determine the most frequent types of pollen in this area and estimate possible health risks, especially the risk of...

2001
BRIAN J. KOPPER RICHARD L. LINDROTH ERIK V. NORDHEIM

Elevated atmospheric concentrations of CO2 and O3 are known to alter the chemical composition of foliage, which in turn may affect the performance of herbivorous insects. We investigated the independent and interactive effects of CO2 and O3 on foliar quality of paper birch (Betula papyrifera Marshall) and the consequences of chemical changes for performance of the whitemarked tussock moth Orgyi...

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