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Alpine treeline is an important ecological boundary, marked by a change in site conditions and plant communities when crossing the forest limit, and tree growth at treeline is strongly constrained by the harsh environment. Finer resolution studies of tree radial variation on short temporal scales can be useful to explore the main physical variables that trigger the radial growth. From 19th Oct. 2008...
Seed bank composition and germination characteristics are necessary for modeling wetland vegetation composition. Yet there are few studies about the seed bank difference between plant communities in lakeshore wetlands. Seed banks are also known to play important roles in the vegetation restoration process. Environmental factors such as water level, temperature, or nutrient levels can affect vegetation...
Variation in the level of self-incompatibility (SI) was quantified in 14 Polish lines of cabbage (Brassica oleracea L. var. capitata) pollinated in various temperature/humidity conditions. Two methods were used to measure the expression of incompatibility: counts of seed set and counts of pollen tubes penetrating the styles 48 h after self-pollination. The level of self-incompatibility varied distinctly...
Sewage sludge was examined for keratinolytic and keratinophilic fungi by means of a multi-tempera-ture (23, 26, 29, 33, 37 and 45oC) hair baiting method. Results indicate that this method can be a useful tool for determination of the influence of temperature and other factors on fungal composition in sludge and evaluation of health risk posed by fungal pathogens. The use of the method facilitated...
This paper presents a discussion of selected factors affecting distribution and behaviour of mercury species in bottom sediments. This paper demonstrates that microorganisms, inorganic sulphides, organic matter, iron and manganese hydroxides, red-ox potential, chlorides and temperature are the main factors controlling the behaviour of this element in bottom sediments.
Przedstawiono wyniki 13-letnich badań nad produkcyjnością bobiku odmiany Nadwiślański, uprawianego w specjalistycznych zmianowaniach ze zróżnicowanym jego udziałem, wynoszącym od 20 do 100% (monokultura). Uwzględniono przebieg ważniejszych elementów agroklimatu (zwłaszcza średniej dobowej temperatury powietrza i sumy opadów podczas wegetacji), stan fitosanitarny łanu (inwazyjność chwastów i chorób)...
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