نتایج جستجو برای: alder tree
تعداد نتایج: 174137 فیلتر نتایج به سال:
Riparian forests are considered to be productive transitional zones between aquatic and terrestrial environments. Despite the complex systems of riparian forests, little is known about their potential for carbon storage, particularly under temperate climates. This study aimed calculate major pools (woody biomass) surrounding small medium streams in hemiboreal zone Latvia. The estimated woody po...
BACKGROUND/AIMS Recently, new palaeoecological records supported by molecular analyses and palaeodistributional modelling have provided more comprehensive insights into plant behaviour during the last Quaternary cycle. We reviewed the migration history of species of subgenus Alnus during the last 50,000 years in Europe with a focus on (1) a general revision of Alnus history since the Last Glaci...
Mountain ash (Sorbus aucuparia) is widespread in nearly whole Europe from sea level to timberline. On north exposed peaks of some mountains the Southern Alps (Ticino/ Switzerland and North Italy/ Verbano-Ossola) small mountain forests build forest limit above 1500 m, so at Monte Lema, Morissolo, I Balmit Mottarone. often occurs on former clearings as pioneer tree secondary plant succession. sit...
Pollen, charcoal and geochemical investigations were carried out on annually laminated sediments of Lake _ Zabińskie (54 07054.500N; 21 59001.100E) and the results were combined with historical and climate data to better understand the mechanism behind plant cover transformations. A millennium-long record of environmental history at 6-years time resolution permitted an assessment of vegetation ...
Forests are the most diverse terrestrial ecosystems and their biological diversity includes trees, but also other plants, animals, and micro-organisms. One-third of the forested land is in boreal zone; therefore, changes in biological diversity in boreal forests can shape biodiversity, even at global scale. Several forest attributes, including size variability, amount of dead wood, and tree spe...
The role of common mycorrhizal networks (CMNs) in postfire boreal forest successional trajectories is unknown. We investigated this issue by sampling a 50-m by 40-m area of naturally regenerating black spruce (Picea mariana), trembling aspen (Populus tremuloides), and paper birch (Betula papyrifera) seedlings at various distances from alder (Alnus viridis subsp. crispa), a nitrogen-fixing shrub...
In a large number of allergic individuals, inhalant allergens are important causative and triggering agents in respiratory allergies. It is essential to survey the pollen and mold around the patient’s environment for the diagnosis and treatment of airborne allergy. Rotorod samplers were installed at well-ventilated places in seven collecting stations in Seoul, the capital of Korea, which has a ...
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