| [analysis on competition and coexistence patterns of aneurolepidium chinense and its main companion species]. | in this study, transects were set in areas where aneurolepidium chinense and its companion species grew together. competition and coexistence patterns of these species in the ecotone were analyzed using the following measures:frequency distribution, spatial pattern, and pattern intensity. patterns of a. chinense and its main companion species were diverse. aggregation was the tactics for a. chinense to defend the foreign species' invading or disperse itself. there existed competition and coexist ... | 2002 | 11962319 |
| soil saprotrophic microfungi associated with roots of calamagrostis epigeios on an abandoned deposit of toxic waste from smelter factory processing pyrite raw materials. | saprotrophic microfungi associated with roots of calamagrostis epigeios growing in industrial waste contaminated with high concentrations of heavy metals (manganese, iron, zinc) were isolated on three different media. the isolates were obtained from three plots colonized by plant cenoses, representing three different succession series of plant cover: initial, intermediate, and advanced. a total of 60 species of saprotrophic microfungi were found in the roots during three samplings. in addition, ... | 2001 | 12032621 |
| [on the competition among discrete-structured populations: a matrix model for population dynamics of woodreed and birch growing together]. | presented is a synthesis of field, theoretical and modelling studies on joint dynamics of two species--common birch (betula pendula roth) and wood small reed (calamagrostis epigeios (l.) roth)--overgrowing a spruce forest clear-cut. a nonlinear matrix model for population dynamics of two species, which both possess non-trivial population structures and compete for a resource in common was developed as an expansion of the linear models for single-species, age-stage-structured population dynamics. ... | 2008 | 19140335 |
| cultivable actinomycetes from rhizosphere of birch (betula pendula) growing on a coal mine dump in silets, ukraine. | five actinomycete strains were isolated from the rhizosphere of birch, one of a few native tree forms capable of thriving on the upper level of a coal mine dump near the village of silets (lvivska region, ukraine). no such strains were isolated from surrounding gangue, or from nearby grass calamagrostis epigeios. using 16s rdna sequencing and analysis of cell wall aminoacids, four of these strains were shown to belong to genus streptomyces and one to be amycolatopsis. the isolates were able to p ... | 2014 | 23686352 |
| [polyvariant ontogeny in woodreeds: novel models and new discoveries]. | polyvariant ontogeny (pvo) is expressed visually in the life cycle graphs (lcgs) for calamagrostis woodreeds as a variety of pathways for individual plants to develop through many of their states distinguishable by the ontogenetic stage and chronological age (in years). pvo is recognized as the basic mechanism of adaptation in local plant populations to their environments, while they find a quantitative measure of the adaptation via developing a matrix model of double-structured population, cali ... | 2016 | 26852570 |
| the effect of lignin photodegradation on decomposability of calamagrostis epigeios grass litter. | the common grass calamagrostis epigeions produces a large amount of dead biomass, which remain above the soil surface for many months. in this study, we determined how exposure of dead biomass above the soil affects its subsequent decomposition in soil. collected dead standing biomass was divided in two parts, the first one (initial litter) was stored in a dark, dry place. the other part was placed in litterbags in the field. the litterbags were located in soil, on the soil surface, or hanging i ... | 2011 | 21667318 |
| a new stromata-producing neotyphodium species symbiotic with clonal grass calamagrostis epigeios (l.) roth. grown in china. | we describe a new stromata-producing neotyphodium species symbiotic with clonal calamagrostis epigeios (l.) roth. stromata on the grass, 47.5-186 mm long, occurred frequently, but neither perithecium nor mature ascus was observed. morphology of fungal isolates obtained from symptomatic and asymptomatic tillers were identical to each other and similar to those of epichloë endophytes. in phylogenetic analysis all selected five fungal isolates clustered into a significantly distinct clade based on ... | 2009 | 19397192 |
| technical note monitoring native vegetation on a dumpsite of pcb-contaminated soil. | composition of native vegetation on a polychlorinated biphenyls (pcb)-contaminated soil dumpsite at lhenice, south bohemia (czech republic), was determined and species variability in the accumulation of pcbs in plant biomass was investigated. soil stripping contaminated by pcbs originated at a factory producing electrical transformers that mostly used the commercial pcb mixture delor 103 and 106. the pcb content of soil in the most contaminated part of the dumpsite reached 153 mg kg(-1) dry soil ... | 2013 | 18246716 |
| phenolic acids as bioindicators of fly ash deposit revegetation. | the floristic composition, the abundance, and the cover of pioneer plant species of spontaneously formed plant communities and the content of total phenolics and phenolic acids, as humus constituents, of an ash deposit after 7 years of recultivation were studied. the restoration of both the soil and the vegetation on the ash deposits of the "nikola tesla-a" thermoelectric power plant in obrenovac (serbia) is an extremely slow process. unfavorable physical and chemical characteristics, the toxici ... | 2006 | 16418890 |
| flavonoid concentrations in three grass species and a sedge grown in the field and under controlled environment conditions in response to enhanced uv-b radiation. | an investigation was carried out to find whether enhanced levels of uv-b radiation induce increased concentrations of flavonoids in the leaves of the grass species deschampsia antarctica, deschampsia borealis and calamagrostis epigeios and the sedge carex arenaria. whether the enhanced levels of uv-b influenced the proportions of the various flavonoids in the leaves was also studied. increased flavonoid concentrations would improve the uv-b shielding of uv-b susceptible tissues. using hplc analy ... | 2002 | 11849979 |
| concentrations of heavy metals and plant nutrients in water, sediments and aquatic macrophytes of anthropogenic lakes (former open cut brown coal mines) differing in stage of acidification. | concentration of heavy metals (al, ba, cd, co, cr, cu, fe, mn, ni, pb, sr, v and zn) as well as macronutrients (n, p, k, ca, mg, s) were measured in water, bottom sediments and plants from anthropogenic lakes in west poland. the collected plants were: phragmites australis, potamogeton natans, iris pseudoacorus, juncus effusus, drepanocladus aduncus, juncus bulbosus, phalaris arundinacea, carex remota and calamagrostis epigeios. two reference lakes were sampled for nymphaea alba, phragmites austr ... | 2001 | 11778963 |
| use of 13c and 15n mass spectrometry to study the decomposition of calamagrostis epigeios in soil column experiments with and without ash additions. | the dynamics of c and n in terrestrial ecosystems are not completely understood and the use of stable isotopes may be useful to gain further insight in the pathways of co2 emissions and leaching of dissolved organic carbon (doc) and nitrogen (don) during decomposition of litter. objectives were (i) to study the decomposition dynamics of calamagrostis epigeios, a common grass species in forests, using 13c-depleted and 15n-enriched plants and (ii) to quantify the effect wood ash addition on the de ... | 2000 | 11022325 |
| effects of ultraviolet-b radiation (uv-b) on growth and physiology of the dune grassland species calamagrostis epigeios. | seedlings of calamagrostis epigeios were exposed to four levels of uv-b radiation (280-320 nm), simulating up to 44% reduction of stratospheric ozone concentration during summertime in the netherlands, to determine the response of this plant species to uv-b irradiation. after six weeks of uv-b treatment, total biomass of all uv-b treated plants was higher, compared to plants that had received no uv-b radiation. the increase of biomass did not appear to be the result of a stimulation of net photo ... | 1995 | 15091535 |