PSJD - Yadda

1

General chemical indicators of water quality in Roztoka Odrzanska (Odra River Mouth, NW Poland)

100%

Poleszczuk G.

Oceanological Studies

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1996

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vol. 25

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issue 3

55-65

EN

The paper results of a study on general chemical indicators of surface water quality carried out in Roztoka Odrza?ska in 1982-1994.The parameters in question were: oxygen content, chloride, nitrate and dissolved phosphate concentrations and BOD5. An attmept was undertaken to determine the influence of the Odra River flow on the chemical status of Roz-toka water. Threshold values of Qs were determined in three regimes of water transport: a back flow of water from the Szczecin Lagoon in the full river-bed and bidirectional (two-layered) water movements - with back flow prevailing and with riverine inflow prevailing.

2

Denitrifying dephosphatation as an alternative solution for nutrient removal from wastewater

100%

Zubrowska-Sudol M., Cyganecka A.

Biotechnologia

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2008

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issue 1

136-145

EN

The anaerobic-anoxic process has been proposed as an alternative to conventional anaerobic-aerobic process for biological phosphorus removal. In this process, phosphate-accumulating bacteria utilize nitrate or nitrite as an electron acceptor instead of oxygen, so phosphorus and nitrogen are removed simultaneously by one group of heterotrophic microorganisms. Advantages of this process are the possibility of saving COD and energy as well as reduction of sludge production. The paper reviews literature on the application of the denitrifying phosphorus removal process for treating municipal wastewater, analyses methods for determining the fraction of denitrifying phosphorus-accumulating organisms in P-removing sludge, and characterizes problems with bacteria isolation and identification.

3

Elements of quality assurance system in nutrient and dissolved oxygen analyses

100%

Danowska B., Dragas D. N., Dragas N., Lysiak-Pastuszak L.-P. E., Lysiak-Pastuszak E., Piechowska P. B., Piechowska B.

Oceanological Studies

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2000

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vol. 29

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issue 4

15-25

EN

In 1994, the Environmental Committee of the Helsinki Commission recommended that all laboratories providing data within the monitoring programmes of the Baltic Sea (HELCOM BMP) and HELCOM CMP (HELCOM COMBINE since 1996) should implement quality assurance system in monitoring activities. Quality assurance system includes validation of applied analytical methods, that is evaluation of measurement errors (measurement uncertainty) under current laboratory conditions. Some elements of quality assurance system implemented at the Marine Chemistry Laboratory of the Institute of Meteorology and Water Management in Gdynia are presented regarding method validation, i.e. experimental determination of precision, bias and detection limit of analytical methods in use and experimental determination of measurement uncertainty related to sampling for nutrient analyses. Results of internal quality control are also presented as well as results of international analytical proficiency tests in which the laboratory participates as a form of external quality control.

4

Nutrient status in the Szczecin Lagoon - past, present and future prospects

88%

Pastuszak M., Wielgat M., Sitek S.

Oceanological Studies

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2001

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vol. 30

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issue 1-2

59-86

EN

Nutrient concentrations and their annual/interannual variability in the Szczecin Lagoon are shaped by variable riverine water/nutrient discharges and bio-geochemical processes in the Lagoon which modify the dissolved/suspended matter introduced. On an interannual scale, nitrate and phosphate concentrations in the Lagoon in 1969-97 displayed quite considerable variability, with maxima of NO3 coinciding with minima of PO4 concentrations. Both NO3 concentrations in the Lagoon and total nitrogen loads showed a strong positive correlation with the water volumes discharged (r = 0.73 and 0.82, respectively). This dependence was much weaker and negative for PO4 (r = - 0.51), and weak and positive for total phosphorus loads (r = 0.35). It would appear, therefore, that in the catchment area of the Oder River, nitrogen sources are mainly diffuse, while phosphorus is derived from point sources. There was a considerable predominance of nitrates in the inorganic nitrogen pool, but the presence of ammonium in large concentrations in winter and summer was also evident. Among the inorganic nutrient species, nitrates exhibited the highest transformation rate into organically bound forms (over 60%) while passing through the Lagoon. The mechanisms responsible for the nutrient transformation patterns in the Lagoon - temperature, in particular - are discussed in the paper. Phytoplankton production in the Lagoon appeared to be phosphorus-limited in spring and nitrogen-limited in summer.

5

Phytoplankton-nutrient relationships during the early spring and the late autumn in a shallow and polluted reservoir

88%

Wilk-Wozniak E., Ligeza S.

Oceanological and Hydrobiological Studies

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2003

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issue 1

75-87

EN

The reservoir where the studies were carried out was originated by modification of an old oxbow lake of the Vistula River. The most important sources of inflowing waters are industrial waters from ?Pulawy Fertilizer Factory?. The highest variability of concentration, was NH4+-N and also Cl-, Ntot., and PO4-3. Some significant correlations between chemical properties of water and algae (especially green algae and diatoms) were found, which suggested that this phytoplankton was mainly responsible for the biogeochemical cycles in the shallow, strongly polluted reservoir. Another interesting phenomenon was the statistically positive correlation between the density of cyanobacteria and potassium, which suggested that it may play an important role in their abundance.

6

Phytoplankton based biomonitoring on Hungarian upper-Tisa

88%

Imre A.

Oceanological and Hydrobiological Studies

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2004

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issue 2

57-62

EN

Phytoplankton based biomonitoring in Hungary actually includes its numbers, also saprobiological investigation and measurement of chlorophyll-a. Saprobiological analyses showed us 199 different described planktonic forms (including Ciliata, Bacteria, Flagellata apochromatica and Mycophyta), which were dominated usually by Diatoms. Other periods are characterised by equalized domination between phylla of algae. The highest numbers of algae were registered usually in summer season and the chlorophyll-a?s level showed explicit correlation with it. Classification on the content of chlorophyll-a must be corrected by a seasonal factor, according to changeable light conditions. Saprobity at every sampling places in all sampling time was showed the second or the third class of water quality, with only one exception at Zahony

7

Oxygen and nutrients in the southern Baltic Sea

88%

Trzosinska A., Lysiak-Pastuszak E.

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issue 1-2

41-76

EN

Temporal variations (1979-1993) in oxygen and nutrient distribution were inveastigated in the Polish sector of the Baltic Sea with reference to hydrological and biological factors.The most strinking differnce in oxygen condiotions in 1989-1993, as compared with the previous decade consist in much earlier and greater supersaturation of the euphotic zone and a significant reduction of oxygen deficiency in the deep water layers.The overall negative trens in oxygen concentrations observed at the bottom of the Gdansk Deep since the 1960s has been reversed.No hydrogen sulphide was found there from spring 1990 until late 1994.In 1989-1993 the winter accumulation peaks of all nutrients shifted from MaArch to February.InN the coastal areas both phosphate and silicate winterpools were reduced to their lowest levels already in spring; in the off-shore waters their respective minimal concentrations were reached in summer and autumn.Nitrates were used by May/June in all areas, except for the Vistula estuarya where their stock was sustained throughout the whole year.Distinct changes in the winter accumulation of nutrients in the surface water were found.In the Gdansk Deep the strong negative trend in silicates ceased, probably due to the declining demand for this nutrient.Rapid accumulation of nitrates was no longer in evidence, but the increasing N/P ratio could be traced in the Gulf of Gdansk as far as the Gdansk Deep.Moreover the coincidence of an effective phosphate sink and low denitrification activity has prompted a significant increase in the N/P ratio in the deep waters of the Gdansk Basin.The input of nutrients from rivers, with a considerablre surplus of nitrogen over phosphorus, is the most obvious reason for the advanced eutrophication in the Polish marine sea.Regional differences in the trophic levels are discussed on the basis of the N/P ratio in the water and the nitrogen and phosphorus uptake ratio.

8

The eutrophication model of the Vistula Lagoon

75%

Kwiatkowski J., Koch_Rasmussen E., Ezhova E., Chubarenko B.

Oceanological Studies

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1997

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vol. 26

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issue 1

5-33

EN

The Vistula Lagoon is a shallow coastal ecosystem located on the Polish-Russian border in the coastal area of the southern Baltic. It is strongly influenced by inflows of seawater from the Baltic as well as by river inflow from the catchment area. High concentrations of nutrients in the Lagoon cause high primary production rates (ca 190 gC/m2/year) and other processes related to eutrophi-cation. Mathematical modelling of the physical and biogeochemical processes in the Vistula Lagoon has been applied as a tool for environmental assessment. The integrated MIKE 21 two-dimensional modelling system (by the Danish Hydraulic Institute / Water Quality Institute) was applied in the study. The eutrophication model of the Vistula Lagoon describes the nutrient cycle including eutro-phication-related processes. This paper describes the setup and calibration of the eutrophication model and presents the results of the basic calculation reflecting the situation in 1994. The role of the model in the evaluation of the ecological situation and in water management and planning is discussed. The model has been calibrated against monitoring measurements carried out in the Polish and Russian parts of the Vistula Lagoon.

9

Nutrients and oxygen in the Gulf of Gdansk

75%

Falkowska L., Bolalek J., Nowacki J.

Oceanological Studies

|

1993

|

issue 64/3

131-162

10

Efficiency of nitrogen and phosphorus utilization in progenies of factorial crosses between European and exotic cultivars of spring barley (Hordeum vulgare L.)

63%

Gorny A. G., Ratajczak D.

Journal of Applied Genetics

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2008

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vol. 49

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issue 4

349-355

EN

Previous observations suggested that some landraces, primitive cultivars and other barleys originating from the harsh conditions of the Middle East, North Africa and Tibet might serve as interesting sources of adaptation to low-input agriculture. This opportunity was verified in field experiments performed under reduced rates of nitrogen (N) and phosphorus (P) fertilization. Genetic variation in major components of the efficiency of N and P utilization was examined among F2 and F3 generations of crosses between four European female and seven exotic male lines of spring barley. Preponderance of general combining ability effects was found for most efficiency components, suggesting that the characters are mainly controlled by additive gene action. Non-additive effects appeared to be less or non-significant. Under reduced fertilization, hybrid progenies of the Syrian cv. M.Dingo/D.Alla 106 and the Moroccan cv. Moroc 9-75 exhibit an enhanced yielding and the highest capacity to utilize N and P efficiently in grain mass formation. The results proved that the exotic barleys appear to be particularly useful for breeding programs aiming at improved barley adaptation to less favourable fertilization regimes.

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General chemical indicators of water quality in Roztoka Odrzanska (Odra River Mouth, NW Poland)

Denitrifying dephosphatation as an alternative solution for nutrient removal from wastewater

Elements of quality assurance system in nutrient and dissolved oxygen analyses

Nutrient status in the Szczecin Lagoon - past, present and future prospects

Phytoplankton-nutrient relationships during the early spring and the late autumn in a shallow and polluted reservoir

Phytoplankton based biomonitoring on Hungarian upper-Tisa

Oxygen and nutrients in the southern Baltic Sea

The eutrophication model of the Vistula Lagoon

Nutrients and oxygen in the Gulf of Gdansk

Efficiency of nitrogen and phosphorus utilization in progenies of factorial crosses between European and exotic cultivars of spring barley (Hordeum vulgare L.)