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1

The Puck Bay as an example of deep dredging unfavorably affecting the aquatic environment

100%
Graca B.
Oceanological and Hydrobiological Studies
|
2009
|
tom 38
|
nr 2
109-127
2

Change of physico-chemical conditions and phytoplankton composition in a humic lake caused by liming and fertilisation

100%
Hutorowicz A.
International Journal of Ecohydrology and Hydrobiology
|
2003
|
tom 03
|
nr 2
173-183
3

The ichthyofauna of the dystrophic Lake Smolak (northern Poland) in light of selected physical and chemical water conditions thirty years after the conclusion of liming and fertilization

67%
Hutorowicz A., Kapusta A., Krzywosz T., Hutorowicz J.
Archives of Polish Fisheries
|
2005
|
tom 13
|
nr 2
The aim of ichthyofauna studies conducted in Lake Smolak (northern Poland) in the 2002-2004 period was to evaluate species richness, growth rate, and fish assemblage structure in light of environmental conditions. This initially dystrophic lake, which, in the 1950s, was inhabited by only two fish species – perch, Perca fluviatilis L., and pike, Esox lucius L., was subjected to experimental liming and fertilization (to stimulate eutrophication) and stocking in the 1971-1974 period. Currently, the ichthyofauna of the lake is comprised of ten species belonging to four families. The density of the fish in this lake is not high; the most numerous are roach, Rutilus rutilus (L.) and bream, Abramis brama (L.). Roach was characterized by a rapid growth rate, but that of bream was very slow. The environmental parameters of the lake undoubtedly have a negative impact on the ichthyofauna, especially the gradients of and seasonal variation in the physical and chemical parameters of the water as well as the absence of submerged hydrophytes and the limited occurrence of helophytes.
4

Changes in plant communities of a drainage ditch over the last 30 years

67%
Goldyn H.
Electronic Journal of Polish Agricultural Universities. Series Environmental Development
|
2009
|
tom 12
|
nr 4
5

Physicochemical features of Wadi Al-Arab Dam (Reservoir), Jordan

67%
Saadoun I., Batayneh E., Alhandal A., Hindieh M.
Oceanological and Hydrobiological Studies
|
2010
|
tom 39
|
nr 4
6
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Soil biological activity as affected by tillage intensity

67%
Gajda A. M., Przewloka B.
International Agrophysics
|
2012
|
tom 26
|
nr 1
The effect of tillage intensity on changes of microbiological activity and content of particulate organic matter in soil under winter wheat duirng 3 years was studied. Microbial response related to the tillage-induced changes in soil determined on the content of biomass C and N, the rate of CO2 evolution, B/F ratio, the activity of dehydrogenases, acid and alkaline phosphatases, soil C/N ratio and microbial biomass C/N ratio confirmed the high sensitivity of soil microbial populations to the tillage system applied. After three year studies, the direct sowing system enhanced the increase of labile fraction of organic matter content in soil. There were no significant changes in the labile fraction quantity observed in soil under conventional tillage. Similar response related to the tillage intensity was observed in particulate organic matter quantities expressed as a percentage of total organic matter in soil. A high correlation coefficients calculated between contents of soil microbial biomass C and N, particulate organic matter and potentiallymineralizable N, and the obtained yields of winter wheat grown on experimental fields indicated on a high importance of biological quality of status of soil for agricultural crop production.
7

Summary, explanation and characteristics of investigations carried out so far on the effect of atmospheric-hydrologic conditions in the drainage basin on heavy metals concentrations in the waters of the Niepolomice Forest

67%
Reczynska-Dutka M.
Polskie Archiwum Hydrobiologii
|
1992
|
tom 39
|
nr 1
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