Issues

Journal & Issues

Volume 21 (2021): Issue 4 (December 2021)

Volume 21 (2021): Issue 3 (September 2021)

Volume 21 (2021): Issue 2 (June 2021)

Volume 21 (2021): Issue 1 (March 2021)

Volume 20 (2020): Issue 4 (December 2020)

Volume 20 (2020): Issue 3 (September 2020)

Volume 20 (2020): Issue 2 (June 2020)

Volume 20 (2020): Issue 1 (March 2020)

Volume 19 (2019): Issue 4 (December 2019)

Volume 19 (2019): Issue 3 (September 2019)

Volume 19 (2019): Issue 2 (June 2019)

Volume 19 (2019): Issue 1 (March 2019)

Volume 18 (2018): Issue 4 (December 2018)

Volume 18 (2018): Issue 3 (September 2018)

Volume 18 (2018): Issue 2 (June 2018)

Volume 18 (2018): Issue 1 (March 2018)

Volume 17 (2017): Issue 4 (December 2017)

Volume 17 (2017): Issue 3 (September 2017)

Volume 17 (2017): Issue 2 (June 2017)

Volume 17 (2017): Issue 1 (March 2017)

Volume 16 (2016): Issue 4 (December 2016)

Volume 16 (2016): Issue 3 (September 2016)

Volume 16 (2016): Issue 2 (June 2016)

Volume 16 (2016): Issue 1 (March 2016)

Volume 15 (2015): Issue 4 (December 2015)

Volume 15 (2015): Issue 3 (September 2015)

Volume 15 (2015): Issue 2 (June 2015)

Volume 15 (2015): Issue 1 (March 2015)

Volume 14 (2014): Issue 4 (December 2014)

Volume 14 (2014): Issue 3 (September 2014)

Volume 14 (2014): Issue 2 (June 2014)

Volume 14 (2014): Issue 1 (March 2014)

Volume 13 (2013): Issue 4 (December 2013)

Volume 13 (2013): Issue 3 (September 2013)

Volume 13 (2013): Issue 2 (June 2013)

Volume 13 (2013): Issue 1 (March 2013)

Volume 12 (2012): Issue 4 (December 2012)

Volume 12 (2012): Issue 3 (September 2012)

Volume 12 (2012): Issue 2 (June 2012)

Volume 12 (2012): Issue 1 (March 2012)

Volume 11 (2011): Issue 4 (December 2011)

Volume 11 (2011): Issue 3 (September 2011)

Volume 11 (2011): Issue 2 (June 2011)

Volume 11 (2011): Issue 1 (March 2011)

Volume 10 (2010): Issue 3-4 (December 2010)

Volume 10 (2010): Issue 2 (June 2010)

Volume 10 (2010): Issue 1 (March 2010)

Journal Details
Format
Journal
eISSN
2300-7575
ISSN
1642-5952
First Published
17 Mar 2011
Publication timeframe
4 times per year
Languages
English

Search

Volume 10 (2010): Issue 2 (June 2010)

Journal Details
Format
Journal
eISSN
2300-7575
ISSN
1642-5952
First Published
17 Mar 2011
Publication timeframe
4 times per year
Languages
English

Search

5 Articles
access type Open Access

The variability of phosphorus fractions in sediments of a shallow, restored Antoninek Reservoir (Poznań, Poland)

Published Online: 08 Apr 2011
Page range: 59 - 65

Abstract

The variability of phosphorus fractions in sediments of a shallow, restored Antoninek Reservoir (Poznań, Poland)

Spatial and temporal variability of phosphorus (P) fractions content in bottom sediments of a shallow preliminary reservoir was studied in Antoninek, situated in Poznań. Fractions were analyzed at least once in a season (more often in spring and summer) between August 2004 and November 2005 according to the fractioning protocol proposed by Psenner et al. (1988). Circa 10 cm thick sediment layers were collected from three study sites, situated along the main axis of the reservoir. The contribution of NH4Cl-P and BD-P, i.e. the most accessible fractions biologically was similar at all stations (usually below 10%). The share of other fractions increased according to the sequence NaOH-RP < NaOH-NRP < HCl-P < Res-P. Only at station 1 the amount of phosphorus related to organic matter was lower than with aluminum. The domination of Res-P fraction indicated that the main part of phosphorus in sediment is biologically unavailable, therefore the intensity of phosphorus loading from sediments shall be low. However, high organic matter content, noted in sediments of Antoninek Reservoir, determined great amount of NaOH-NRP fraction. Both parameters remained under the influence of mats of macroalgae, growing intensively in the reservoir during vegetation season. The role of sediments as a source of phosphorus for water column enlarged, due to increased organic matter decomposition, especially in periods of high water temperature in this shallow reservoir.

Keywords

  • bottom sediments
  • phosphorus fractions
  • restoration
  • shallow reservoir
access type Open Access

Variability of bio-optical parameters in Lake Jasień Północny and Lake Jasień Południowy

Published Online: 08 Apr 2011
Page range: 67 - 76

Abstract

Variability of bio-optical parameters in Lake Jasień Północny and Lake Jasień Południowy

Bio-optical properties of water in two lakes from the Bytow district, Jasień Południowy (JS) and Jasień Północny (JN), were measured between 2007 and 2010. These lakes were chosen as reference for research in the Regional Environment Monitoring System (Wojewódzki Program Monitoringu Środowiska) between 2007 and 2009. The research concerned mainly OSCs (Optically Significant Constituents) such as chlorophyl a, SPM (Suspended Particulate Matter), CDOM (Colored Dissolved Organic Matter) and optical parameters of water (Secchi depth zSD, diffuse light attenuation coefficient Kd, PAR). The aim of this article is to present temporal variability of OSC and optical properties in the investigated lakes as well as the relation between OSCs and the optical properties of water. The research has shown that the variability in the properties of water of these lakes is quite significant: concentration of chlorophyl CChl varied from 1.3 to 32.3 mg m-3 and the Kd, PAR coefficient from 0.42 to 1.05 m-1. The obtained results were compared with the same parameters from other lakes in this region. The variability in the optical properties depend on the season and the biological activity of phytoplankton. Regression analyses showed a high correlation of optical properties of water with CChl and CSPM, and no correlation with CDOM concentration. The highest determination coefficient was obtained for the optical parameters correlated with the three OSCs. The presented results show not only annual variability and variability between the years but also an influence of OSC elements on the optical properties of lakes.

Keywords

  • Underwater light field
  • Optically significant substances
access type Open Access

Morphometry changes of Lake Ostrowskie (the Gniezno Lakeland) on the basis of cartographic, remote sensing and geodetic surveying

Published Online: 08 Apr 2011
Page range: 77 - 85

Abstract

Morphometry changes of Lake Ostrowskie (the Gniezno Lakeland) on the basis of cartographic, remote sensing and geodetic surveying

The authors studied changes in the morphometry of Lake Ostrowskie over the period of 123 years on the grounds of cartographic materials, remote sensing data, land surveying, and data referring to the water stages. The changes that occurred in the lake up to the 1960s were related to the regulation and melioration works conducted in the entire area of the Gniezno Lakeland. On the other hand, drainage of the open pits of brown coal resulted in the considerable decline of the water table by another 2.5 m in the years 2002-2009. As a result of the decline of water down to 96.4 m a.s.l. the present lake was divided into two water bodies (the eastern one and the western one) joint with a channel. This led to the decline in the lake area from 346.7 ha in 1887 to 242.0 ha, and its volume by 28.9%, out of which by 18.3% only in recent twenty-eight years.

Keywords

  • lake
  • morphometry
  • temporal change
  • GPS
  • aerial photographs
access type Open Access

Differentiation of concentration level of iron compounds in water reservoirs in subsidence depressions in the Katowice Upland

Published Online: 08 Apr 2011
Page range: 87 - 93

Abstract

Differentiation of concentration level of iron compounds in water reservoirs in subsidence depressions in the Katowice Upland

The aim of investigations was to evaluate the influence of varied anthropopression on the concentration of iron compounds in water reservoirs located in subsidence depressions treated as geosystems. Investigations were carried out during period of three hydrological years 2003-2005 within 10 reservoirs located in the Katowice Upland. The presence of iron was systematically measured in water and one time in bottom deposits. Measurements in taken samples were made by means of spectrometer of atomic absorption SOLAAR M6. Results confirmed varied influence of anthropopression on concentration of iron compounds in described reservoirs. It refers to waters and bottom deposits as well. Large differences between reservoirs occurred in a case of iron concentration in bottom deposits. The smallest amounts of it (3.10 g kg-1) were stated in transfer (flow-through) reservoir in Sosnowiec. Maximum values occurred also in reservoir in Sosnowiec, and the level of iron concentration in its deposits amounted to 44.28 g kg-1. Waters were also characterized by varied level of iron concentration. The lowest average values (0.0437 mg Fe l-1) were typical for one of reservoirs in Sosnowiec, whereas the maximum average iron concentration in amount of 0.4331 mg Fe l-1 referred to one of reservoirs in Zabrze. In the described reservoirs dynamic temporal changes in iron concentration in limnic waters was also stated. In every reservoir periods of complete disappearance of this metal occurred, whereas the maximum amounts of it in particular objects changed from 0.1132 mg Fe l-1 in reservoir in the borderland of Bytom and Chorzów up to 1.3744 mg Fe l-1 in reservoir located in Zabrze. The presence of iron compounds in the described water reservoirs on the one hand is shaped by environmental conditions, but on the other hand varied influence of anthropopression decides significantly of their spatial and temporal cycle in the nature.

Keywords

  • anthropopression
  • Katowice Upland
  • limnology
  • bottom deposits
  • iron
access type Open Access

Circulation of biogenic substances in the Kamionka river-lake system

Published Online: 08 Apr 2011
Page range: 95 - 101

Abstract

Circulation of biogenic substances in the Kamionka river-lake system

Reservoirs in river-lake systems play a dominant role in the circulation of biogenic substances. Their evolutional transformations, consisting in accumulation of substances, results it their ultimate disappearance. However, at a given moment, the roles played by reservoirs are far more diverse - they accumulate, perform a transit role or supply the system with biogenic substances. The assignment of roles played in the system to reservoirs performed on the basis of data of 2006 was verified in 2007 with respect to the durability of their roles. Some of the lakes consistently accumulated biogenic substances. Their performing of this function in the system was facilitated by favourable morphometric conditions accompanied by strong pressure, exceeding the value determined for critical load. A tendency of supplying the system by other lakes was visible when they were charged with a lower load than the critical values for phosphorus load. The reservoirs then utilised the opportunity to discharge a part of biogenic substance present in them, partially of internal origin.

Keywords

  • biogenic substances
  • river-lake system
  • Kashubian Lakeland
5 Articles
access type Open Access

The variability of phosphorus fractions in sediments of a shallow, restored Antoninek Reservoir (Poznań, Poland)

Published Online: 08 Apr 2011
Page range: 59 - 65

Abstract

The variability of phosphorus fractions in sediments of a shallow, restored Antoninek Reservoir (Poznań, Poland)

Spatial and temporal variability of phosphorus (P) fractions content in bottom sediments of a shallow preliminary reservoir was studied in Antoninek, situated in Poznań. Fractions were analyzed at least once in a season (more often in spring and summer) between August 2004 and November 2005 according to the fractioning protocol proposed by Psenner et al. (1988). Circa 10 cm thick sediment layers were collected from three study sites, situated along the main axis of the reservoir. The contribution of NH4Cl-P and BD-P, i.e. the most accessible fractions biologically was similar at all stations (usually below 10%). The share of other fractions increased according to the sequence NaOH-RP < NaOH-NRP < HCl-P < Res-P. Only at station 1 the amount of phosphorus related to organic matter was lower than with aluminum. The domination of Res-P fraction indicated that the main part of phosphorus in sediment is biologically unavailable, therefore the intensity of phosphorus loading from sediments shall be low. However, high organic matter content, noted in sediments of Antoninek Reservoir, determined great amount of NaOH-NRP fraction. Both parameters remained under the influence of mats of macroalgae, growing intensively in the reservoir during vegetation season. The role of sediments as a source of phosphorus for water column enlarged, due to increased organic matter decomposition, especially in periods of high water temperature in this shallow reservoir.

Keywords

  • bottom sediments
  • phosphorus fractions
  • restoration
  • shallow reservoir
access type Open Access

Variability of bio-optical parameters in Lake Jasień Północny and Lake Jasień Południowy

Published Online: 08 Apr 2011
Page range: 67 - 76

Abstract

Variability of bio-optical parameters in Lake Jasień Północny and Lake Jasień Południowy

Bio-optical properties of water in two lakes from the Bytow district, Jasień Południowy (JS) and Jasień Północny (JN), were measured between 2007 and 2010. These lakes were chosen as reference for research in the Regional Environment Monitoring System (Wojewódzki Program Monitoringu Środowiska) between 2007 and 2009. The research concerned mainly OSCs (Optically Significant Constituents) such as chlorophyl a, SPM (Suspended Particulate Matter), CDOM (Colored Dissolved Organic Matter) and optical parameters of water (Secchi depth zSD, diffuse light attenuation coefficient Kd, PAR). The aim of this article is to present temporal variability of OSC and optical properties in the investigated lakes as well as the relation between OSCs and the optical properties of water. The research has shown that the variability in the properties of water of these lakes is quite significant: concentration of chlorophyl CChl varied from 1.3 to 32.3 mg m-3 and the Kd, PAR coefficient from 0.42 to 1.05 m-1. The obtained results were compared with the same parameters from other lakes in this region. The variability in the optical properties depend on the season and the biological activity of phytoplankton. Regression analyses showed a high correlation of optical properties of water with CChl and CSPM, and no correlation with CDOM concentration. The highest determination coefficient was obtained for the optical parameters correlated with the three OSCs. The presented results show not only annual variability and variability between the years but also an influence of OSC elements on the optical properties of lakes.

Keywords

  • Underwater light field
  • Optically significant substances
access type Open Access

Morphometry changes of Lake Ostrowskie (the Gniezno Lakeland) on the basis of cartographic, remote sensing and geodetic surveying

Published Online: 08 Apr 2011
Page range: 77 - 85

Abstract

Morphometry changes of Lake Ostrowskie (the Gniezno Lakeland) on the basis of cartographic, remote sensing and geodetic surveying

The authors studied changes in the morphometry of Lake Ostrowskie over the period of 123 years on the grounds of cartographic materials, remote sensing data, land surveying, and data referring to the water stages. The changes that occurred in the lake up to the 1960s were related to the regulation and melioration works conducted in the entire area of the Gniezno Lakeland. On the other hand, drainage of the open pits of brown coal resulted in the considerable decline of the water table by another 2.5 m in the years 2002-2009. As a result of the decline of water down to 96.4 m a.s.l. the present lake was divided into two water bodies (the eastern one and the western one) joint with a channel. This led to the decline in the lake area from 346.7 ha in 1887 to 242.0 ha, and its volume by 28.9%, out of which by 18.3% only in recent twenty-eight years.

Keywords

  • lake
  • morphometry
  • temporal change
  • GPS
  • aerial photographs
access type Open Access

Differentiation of concentration level of iron compounds in water reservoirs in subsidence depressions in the Katowice Upland

Published Online: 08 Apr 2011
Page range: 87 - 93

Abstract

Differentiation of concentration level of iron compounds in water reservoirs in subsidence depressions in the Katowice Upland

The aim of investigations was to evaluate the influence of varied anthropopression on the concentration of iron compounds in water reservoirs located in subsidence depressions treated as geosystems. Investigations were carried out during period of three hydrological years 2003-2005 within 10 reservoirs located in the Katowice Upland. The presence of iron was systematically measured in water and one time in bottom deposits. Measurements in taken samples were made by means of spectrometer of atomic absorption SOLAAR M6. Results confirmed varied influence of anthropopression on concentration of iron compounds in described reservoirs. It refers to waters and bottom deposits as well. Large differences between reservoirs occurred in a case of iron concentration in bottom deposits. The smallest amounts of it (3.10 g kg-1) were stated in transfer (flow-through) reservoir in Sosnowiec. Maximum values occurred also in reservoir in Sosnowiec, and the level of iron concentration in its deposits amounted to 44.28 g kg-1. Waters were also characterized by varied level of iron concentration. The lowest average values (0.0437 mg Fe l-1) were typical for one of reservoirs in Sosnowiec, whereas the maximum average iron concentration in amount of 0.4331 mg Fe l-1 referred to one of reservoirs in Zabrze. In the described reservoirs dynamic temporal changes in iron concentration in limnic waters was also stated. In every reservoir periods of complete disappearance of this metal occurred, whereas the maximum amounts of it in particular objects changed from 0.1132 mg Fe l-1 in reservoir in the borderland of Bytom and Chorzów up to 1.3744 mg Fe l-1 in reservoir located in Zabrze. The presence of iron compounds in the described water reservoirs on the one hand is shaped by environmental conditions, but on the other hand varied influence of anthropopression decides significantly of their spatial and temporal cycle in the nature.

Keywords

  • anthropopression
  • Katowice Upland
  • limnology
  • bottom deposits
  • iron
access type Open Access

Circulation of biogenic substances in the Kamionka river-lake system

Published Online: 08 Apr 2011
Page range: 95 - 101

Abstract

Circulation of biogenic substances in the Kamionka river-lake system

Reservoirs in river-lake systems play a dominant role in the circulation of biogenic substances. Their evolutional transformations, consisting in accumulation of substances, results it their ultimate disappearance. However, at a given moment, the roles played by reservoirs are far more diverse - they accumulate, perform a transit role or supply the system with biogenic substances. The assignment of roles played in the system to reservoirs performed on the basis of data of 2006 was verified in 2007 with respect to the durability of their roles. Some of the lakes consistently accumulated biogenic substances. Their performing of this function in the system was facilitated by favourable morphometric conditions accompanied by strong pressure, exceeding the value determined for critical load. A tendency of supplying the system by other lakes was visible when they were charged with a lower load than the critical values for phosphorus load. The reservoirs then utilised the opportunity to discharge a part of biogenic substance present in them, partially of internal origin.

Keywords

  • biogenic substances
  • river-lake system
  • Kashubian Lakeland

Plan your remote conference with Sciendo