نتایج جستجو برای: bioindication
تعداد نتایج: 207 فیلتر نتایج به سال:
Bioindication has become an indispensable part of water quality monitoring in most countries the world, with presence and abundance bioindicator taxa, mostly multicellular eukaryotes, used for biotic indices. In contrast, microbes (bacteria, archaea protists) are seldom as bioindicators routine assessments, although they have been recognized their importance environmental processes. Recently, u...
15 Chronically elevated reactive nitrogen deposition has a severe impact on many ecosystems, and there is 16 widespread interest in the possibility of using plant community composition to estimate the level of 17 nitrogen deposition and consequent impacts. Existing approaches use a variety of simple measures 18 including functional type ratios, Ellenberg numbers, and diversity indices. We propo...
Specimens of Pistia stratiotes were subjected to five concentrations of arsenic (As) for seven days. Growth, As absorption, malondialdehyde (MDA) content, photosynthetic pigments, enzymatic activities, amino acids content and anatomical changes were assessed. Plant arsenic accumulation increased with increasing metalloid in the solution, while growth rate and photosynthetic pigment content decr...
Vast areas of Western Siberia (about 40%) are occupied by saline soils. Solonetzic agricultural lands mainly used for growing perennial grasses - phytomeliorants. To increase the yield fodder crops on solonetz lands, specialists Siberian Research Institute Fodder Crops in 80s last century developed phytomeliorative crop rotations. The article considers effect grassing rotations with a mixture b...
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