Wyniki wyszukiwania

1

Phosphate exchange across the sediment–water interface under oxic and hypoxic/anoxic conditions in the Southern Baltic Sea

100%

Lukawska-Matuszewska K., Burska D.

Oceanological and Hydrobiological Studies

|

2011

|

tom 40

|

nr 2

2

The upwelling of nutrients in the coastal area of the Hel Peninsula [the Baltic Sea]

100%

Burska D., Szymelfenig M.

Oceanological and Hydrobiological Studies

|

2005

|

tom 34

|

nr Suppl.2

3

Persistent organic pollutants [POPs] and polycyclic aromatic hydrocarbons [PAHs] in surface sediments from selected fjords, tidal plains and lakes of the North Spitsbergen

81%

Sapota G., Wojtasik B., Burska D., Nowinski K.

Polish Polar Research

|

2009

|

tom 30

|

nr 1

59-76

4

Sulfur in the marine environment

81%

Jasinska A., Burska D., Bolalek J.

Oceanological and Hydrobiological Studies

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2012

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tom 41

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nr 2

5

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Adenosine triphosphate in the marine boundary layer in the Southern Baltic Sea

80%

Pryputniewicz D., Falkowska L., Burska D.

Oceanologia

|

2002

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tom 44

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nr 4

Changes in adenosine triphosphate (ATP) concentration were measured in the offshore and coastal waters of the GdańskBasi n in spring. As regards the vertical distribution, it was found that high ATP concentrations occurred mainly in the euphotic layer (above the thermocline) and near the bottom (below the halocline). The high concentrations of ATP in the euphotic layer resulted from primary and secondary production, while the other maximum was due to the presence of bacteria actively degrading organic matter. Changes in ATP concentration in the euphotic layer were closely correlated with the phase of the day. An increase in ATP concentrations in the surface microlayer was observed in the evening and at night, probably as a result of heterotroph proliferation. During daylight, ATP production was inhibited by increasing radiation, hence its concentrations in the sea surface microlayer were considerably lower. Strong winds exerted a significant influence on ATP concentrations in the surface microlayer and in the subsurface water. Windstress depressed ATP concentrations. The biomass of living microorganisms in the microlayer was comparable with the microbiomass beneath the halocline.

6

Short-term fluctuations in dissolved silicate concentrations in the Gdansk Deep

80%

Burska D., Falkowska L., Bolalek J.

Oceanological Studies

|

1997

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tom 26

|

nr 2-3

7

Suspended particulate matter in the Hel upwelling Region [the Baltic Sea]

80%

Bradtke K., Burska D., Matciak M., Szymelfenig M.

Oceanological and Hydrobiological Studies

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2005

|

tom 34

|

nr Suppl.2

8

Temporal variability in the chemical composition of bottom sediments in the Pomeranian Bay [Southern Baltic]

80%

Burska D., Frankowski L., Bolalek J.

Oceanologia

|

1999

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tom 41

|

nr 3

9

Stratification of particulate organic carbon and nitrogen in the Gdańsk Deep (Southern Baltic Sea)

80%

Burska D., Pryputniewicz D., Falkowska L.

Oceanologia

|

2005

|

tom 47

|

nr 2

Particulate organic carbon (POC) and nitrogen (PON) concentrations and fluxes were measured during an experiment in the Gdańsk Deep in late spring (30.05. –06.06.2001). The vertical POC and PON concentration profiles were characterised by the highest values in the euphotic layer,a gradual decrease with depth, and an increase below the halocline. The hydrophysical conditions had a decisive impact on POC and PON fluxes in the water column. Preferential removal of nitrogen from suspended mater was observed in the entire water column (maximum – in the vicinity of thermocline). There were also differences in the diurnal effectiveness of nitrogen removal as compared to carbon removal. The removal rate was highest at night.

10

Short-term changes in the hydrochemical constituents in the water column of the Gdansk Deep [Baltic Sea] in spring. Part 1. Nutrient and oxygen concentrations in relation to the density stratification

80%

Falkowska L., Burska D., Bolalek J., Roguszczak D.

Oceanologia

|

1998

|

tom 40

|

nr 2

11

New simple statistical formulas for estimating surface concentrations of suspended particulate matter (SPM) and particulate organic carbon (POC) from remote-sensing reflectance in the Southern Baltic Sea

71%

Wozniak S. B., Darecki M., Zablocka M., Burska D., Dera J.

Oceanologia

|

2016

|

tom 58

|

nr 3

12

Analysis of cultivable aerobic bacteria isolated from bottom sediments in the Wijdefjorden region, Spitsbergen

61%

Konieczna I., Wojtasik B., Kwinkowski M., Burska D., Nowinski K., Zarnowiec P., Kaca W.

Polish Polar Research

|

2011

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tom 32

|

nr 2

13

Diurnal variations in nitrogen, phosphorus and iron compounds in the Southern Baltic Sea

61%

Sikorowicz G., Falkowska L., Burska D., Dunajska D., Pryputniewicz D., Magulski R., Lewandowska A.

Oceanologia

|

2005

|

tom 47

|

nr 2

In order to assess their short-term variability, nutrient concentrations were measured at standard depths at 2 h intervals in the deepest region of the Gdańsk Deep during the first ten days of June 2001. The mean concentrations of nutrients in the euphotic zone were: NN (NO2 −, NO3 −, NH4 +) – 1.93 μmol dm−3, PO4 3− – 0.12 μmol dm−3 and Fetot – 0.11 μmol dm−3. During daylight hours, when the rate of assimilation was fastest, concentrations of nitrogen, phosphorus and iron compounds were very low. The phosphate concentration fell to a minimum (0.03 μmol dm−3) between 04:00 and 10:00 hrs, while total iron dropped to 0.01 μmol dm−3 between 10:00 and 16:00 hrs. Both levels were below the limiting values for phosphorus and iron. At night, concentrations of NO3 − and PO4 3− rose by 25%, those of NH4 + and Fetot by 35%. The mean molar ratios of NN:PO4 3− and Fetot:PO4 3− in the surface layer were subject to significant daily fluctuations. The molar NN:PO4 3− ratio was higher than the optimum value established for the Baltic Sea. Below the halocline, the concentrations of dissolved iron and phosphorus rose as a result of diffusion from sediments in response to changing redox conditions.

14

Porewater nutrients [phosphate, ammonia and silicate] in the eastern part of the Southern Baltic Sea

61%

Graca B., Witek Z., Burska D., Bialkowska I., Pawelec A., Bolalek J.

Oceanological and Hydrobiological Studies

|

2006

|

tom 35

|

nr 3

15

Description of hydrological conditions in the Hel upwelling Region [the Baltic Sea]

61%

Matciak M., Burska D., Bradtke K., Kaluzny M., Szymanek L., Szymelfenig M.

Oceanological and Hydrobiological Studies

|

2005

|

tom 34

|

nr Suppl.2

Ograniczanie wyników

Phosphate exchange across the sediment–water interface under oxic and hypoxic/anoxic conditions in the Southern Baltic Sea

The upwelling of nutrients in the coastal area of the Hel Peninsula [the Baltic Sea]

Persistent organic pollutants [POPs] and polycyclic aromatic hydrocarbons [PAHs] in surface sediments from selected fjords, tidal plains and lakes of the North Spitsbergen

Sulfur in the marine environment

Adenosine triphosphate in the marine boundary layer in the Southern Baltic Sea

Short-term fluctuations in dissolved silicate concentrations in the Gdansk Deep

Suspended particulate matter in the Hel upwelling Region [the Baltic Sea]

Temporal variability in the chemical composition of bottom sediments in the Pomeranian Bay [Southern Baltic]

Stratification of particulate organic carbon and nitrogen in the Gdańsk Deep (Southern Baltic Sea)

Short-term changes in the hydrochemical constituents in the water column of the Gdansk Deep [Baltic Sea] in spring. Part 1. Nutrient and oxygen concentrations in relation to the density stratification

New simple statistical formulas for estimating surface concentrations of suspended particulate matter (SPM) and particulate organic carbon (POC) from remote-sensing reflectance in the Southern Baltic Sea

Analysis of cultivable aerobic bacteria isolated from bottom sediments in the Wijdefjorden region, Spitsbergen

Diurnal variations in nitrogen, phosphorus and iron compounds in the Southern Baltic Sea

Porewater nutrients [phosphate, ammonia and silicate] in the eastern part of the Southern Baltic Sea

Description of hydrological conditions in the Hel upwelling Region [the Baltic Sea]