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Showing 1 to 20 of 50 for “"Alnus"”.
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Farmakognostická studie Alnus spp.
… Téma diplomové práce: Farmakognostická studie Alnus spp. Student: Jakub Chlebek Abstrakt Diplomová práce Farmakognostická studie Alnus spp. se skládá z teoretické a experimentální části. Teoretická část obsahuje botanickou charakteristiku třech domácích druhů (Alnus glutinosa, Alnus incana, …
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Physiological and Morphological Responses of Nitrogen-Fixing Red Alder (Alnus Rubra) and Sitka Alder (Alnus Viridis Ssp. Sinuata) to Flooding: Inter- and Intraspecific Comparisons
Red alder (Alnus rubra) and sitka alder (A. viridis ssp. sinuata) are nitrogen-fixing woody species that grow sympatrically along the Pacific coast of North America. Red alder is found in poorly drained lowlands, as well as in soils of moist upland slopes, whereas sitka alder generally colonizes …
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Is Alnus viridis 'a' glacial relict in the Black Forest ?
… different populations of A. viridis and other Alnus species. I compared the sequences of the noncoding trnT-trnF (trnT-L and trnL-F-spacers and trnL-intron) region of the chloroplast genome. Based on the base-pair variations, in the trnL-trnF region all individual population of A. viridis were …
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Symbiotic relationships of <i>alnus glutinosa</i> with arbuscular mycorrhizal fungi and with <i>frankia</i>
… mycorrhizal fungi (AMF) infective on <i>Alnus glutinosa</i> and the effects on early growth of inoculation of seedlings with AMF and <i>Frankia </i>were investigated. AMF characteristic of <i>Glomus</i>-like fungi were detected microscopically in <i>A. glutinosa</i> roots from mineral and …
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The impacts of alder (alnus spp.) and salmon (oncorhynchus spp.) on aquatic nutrient dynamics and microbial communities in southwestern Alaska
… to ecology. Nitrogen (N)-fixation by alder (Alnus spp.) and Pacific salmon (Oncorhynchus spp.) provide key nutrient subsidies to freshwater systems. Southwestern (SW) Alaska supports some of the greatest salmon runs in the world. Alder is also a prevalent constituent of the regional …
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Physiological effects of moisture stress, moisture stress conditioning, and leaf area manipulations on black alder seedlings (Alnus glutinosa (L.) Gaertn.)
This project consisted of three studies, two of which examined the effects of moisture deficits and moisture stress conditioning of black alder seedlings and the third examined the effects of shoot manipulations on the physiology of black alder seedlings and the nitrogenase activity of the …
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Connecting the dots: Remote sensing of Glossy and Common Buckthorn (Frangula alnus and Rhamnus cathartica) in the Oak Openings Region of Northwest Ohio
Glossy and common buckthorn (Frangula alnus and Rhamnus cathartica) are invasive woody shrubs that formed dense monoculture thickets in the Oak Openings Region of NW Ohio. Conventional techniques of vegetation mapping are expensive and time-consuming. Thickets were identified using remotely sensed …
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Effects of Experimental Flooding Regimes on the Seasonal Carbon and Nitrogen Budgets of Silver Maple (Acer Saccharinum) and Speckled Alder (Alnus Incana Ssp. Rugosa)
… root flooding. Seedlings of speckled alder [Alnus incana ssp. rugosa (DuRoi) Clausen], a dominant N-fixing woody species in northern wetlands, received late spring, summer, and fall flooding treatments. Silver maple survived all flooding treatments and its capacity to grow and accrete N and …
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Wechselwirkung zwischen Schwarzerlen und Erlenblattkäfer: Signaltransfer zwischen Bäumen und induzierte Resistenz
… Diesem Signaltransfer wurde bei der Schwarzerle (Alnus glutinosa) und dem Blauen Erlenblattkäfer (Agelastica alni) als Schadinsekt nachgegangen. Die Untersuchungen gliederten sich in folgende Bereiche: (I.) Direkte Auswirkungen von Herbivorenfraß und Elicitierung auf die Physiologie von A. …
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Actinorhizal Plant Nodulation and Nitrogen Fixation in Natural and Experimental Systems
… Frankia inoculum were applied as a root dip to Alnus glutinosa and Casuarina equisetifoloia seedlings. This treatment increased nodulation 5- to 10-fold in greenhouse experiments and also of A. glutinosa in a field experiment.
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Analysis of Fossil Pollen from a Pleistocene Cypress Forest Preserved on the Northern Gulf of Mexico Continental Shelf
… During the marsh period in both cores, <em>Alnus</em> becomes a major taxon. This rise in <em>Alnus </em>occurs with high percentages of <em>Taxodium </em>in Core 15DF1, but occurs with high percentages of <em>Poaceae</em> in Core 15DF3B, possibly indicating localized differences. …
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Monitoring the influx of marine derived Nitrogen and characterizing soil food webs of riparian zones of the Elwha River Watershed, WA, USA.
… salmon and symbiotic nitrogen fixation via Alnus rubra. The recent removal of two large dams on the Elwha River, WA, opened up ~60 km of previously inaccessible river habitat for pacific salmon. I used naturally abundant stable nitrogen isotopes (denoted as ‰ δ15N) to establish baseline data …
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Species response to shifting and variable climates
… and postglacial colonization of an alder (Alnus) species complex (n = 3 taxa) from this vast region. Using high-throughput DNA sequencing, hindcast Species Distribution Modeling, and a reassessment of pollen records, I found evidence that Alnus expanded from several population nuclei (i.e. …
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The Role of Fire in Montane Forest Environments in the Willamette National Forest, Oregon
… along with <em>Pseudotsuga </em>and <em>Alnus</em>, suggesting that an open-canopy conifer forest developed soon after the area was glacier free. Fire frequency increased during the early Holocene. Warmer and drier conditions are reflected in the herbaceous vegetation, <em>Artemisia</em>, …
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The summer fleshy fungus flora of the Gorge of Carp Creek, University of Michigan Biological Station, with a comparison of the years 1961 and 1962
… of species. Pieca-Thuga bog, Betula forest, and Alnus-Typha swamp produced the next larer number of species respectively.
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Aspects of the Flandrian vegetational history of south-west Scotland, with special reference to possible Mesolithic impact
… several cores were analysed across the rise in Alnus. Preliminary counts were made from a core from Loch Doon itself. Radiocarbon dating gave additional confidence to the chronological framework. The availability of comparable pollen data enabled some distinction between local and more regional …
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Methodology to predict the strength and stiffness of red alder block pallet connections fastened with helically threaded nails
… the strength and the stiffness of red alder (Alnus rubra) nailed pallet connections subjected to repetitive loading. Joint tests were conducted to define the mechanical properties of bottom block pallet connections. The primary tests were conducted to define the strength and stiffness of joint …
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Dendrochronology and the study of crannogs.
… The dendrochronological potential of alder (Alnus glutinosa)was examined and a suitable methodology developed. Cross-correlation and chronology formation are possible but extreme ring-width values, i.e signature years, and compression of the outermost rings re identified as problematic …
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Nocturnal water relations and predawn water potential disequilibrium in temperate deciduous tree species
… tremula), arukask (Betula pendula) ja sanglepp (Alnus glutinosa). Põuatingimustes liikide vahel erinevused õhulõhede juhtivuses kaovad. Eestis läbi viidud eksperimendi käigus kogutud andmed demonstreerisid hübriidhaaval (Populus tremula × P. tremuloides) erinevust lehe ja mulla veepotentsiaalide …
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Testing the forage preference of the American pika (Ochotona princeps) for use in connectivity corridors in the Washington Cascades
… menziesii</em>), Sitka alder (<em>Alnus viridis</em>), willow (<em>Salix spp.</em>), and black cottonwood (<em>Populus balsamifera trichocarpa</em>) were the most selected species, and were recommended for planting in the upcoming crossing structures. Samples of each of the tested …
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