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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 12 (2012): Issue 2 (June 2012)

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

Search

6 Articles
Open Access

The influence of the monsoon climate on phytoplankton in the Shibpukur pool of Shiva temple in Burdwan, West Bengal, India

Published Online: 26 Jan 2013
Page range: 47 - 63

Abstract

Abstract

A total of 44 taxa were observed in monthly sampled phytoplankton of the Shibpukur pool in Burdwan, West Bengal between March, 2010 and February, 2011. The most abundant taxa belong to Charophyta, followed by cyanobacteria, diatoms and euglenoids. Bio-indication shows that the pool community preferred low alkaline, low mineralized and low organically polluted water. The total phytoplankton density showed its maximum values in May, 2010. The Shannon-Weaver diversity index and the Pielou evenness value were found to be highest during the post-monsoon season. The Simpson dominance index and the Margalef index of richness were highest in the pre-monsoon season. The total phytoplankton density showed a highly significant positive correlation with pH and salinity and significant positive correlation with air temperature, water temperature, dissolved oxygen and total suspended solids. Among the reported 44 phytoplankton taxa only 3 showed a random distributional pattern. The Bray-Curtis Cluster analysis and the comparative statistics reveal two groups of phytoplankton assemblages in respect to the monsoon seasons. The successive communities form a continuum corresponding to Colwell’s Constancy (C) category. The calculated indices, CCA, and bio-indication analysis exhibit a low pollution level in the Shibpukur pool that can be used as a model of aquatic community dynamics under seasonal fluctuation in the monsoon climate, applicable for monitoring of water bodies in the West Bengal Province

Keywords

  • Phytoplankton
  • monsoon climate
  • natural reserve
  • West Bengal
  • India
Open Access

Water exchange of three shallow Łęczna-Włodawa Lakes

Published Online: 26 Jan 2013
Page range: 65 - 72

Abstract

Abstract

The research was carried out in three Łęczna-Włodawa lake-catchment systems, during the hydrological years 2007-2009. The observed lakes varied in terms of basin morphometry and catchment features. The hydrological functioning of the lakes resulted from three main factors: 1) storage capacity of the lake basin, 2) catchment area and relief, 3) human impact on water distribution. The vertical water exchange ratio in Lake Sumin was almost four-times higher than flushing time. In Lakes Rotcze and Syczyńskie horizontal water exchange, presented as flushing time was significantly higher than the vertical one.

Keywords

  • flushing time
  • lake basin
  • water budget elements
  • Łęczna-Włodawa Lake District
Open Access

General systems theory and the operation of basins without an outlet: A methodological aspect

Published Online: 26 Jan 2013
Page range: 73 - 78

Abstract

Abstract

Basins without outlets, often with a small water body at the bottom, are a characteristic element of a postglacial landscape. Areas nourishing those small landforms belong to the passive part of catchments of hydrographic systems and determine the retentivity of entire drainage basins. The most suitable approach to adopt in research on those objects seems to be the theory of a geoecosystem, a universal methodological conception used in describing geographical regions at various scales. It allows the use of quantitative research methods, and hence parameterisation of their environment. Thus, the geoecosystems of basins without outlets can provide foundations of their dynamic classification.

Keywords

  • theory of geoecosystem
  • basins without outlets
Open Access

Evaluation of trophic level of the largest dimictic lakes of western Pomerania based on the Carlson criteria

Published Online: 26 Jan 2013
Page range: 79 - 85

Abstract

Abstract

: Between the years 1970-2010, using the Carlson model criteria, the rate of eutrophication and trophic level of the largest dimictic lakes of Western Pomerania were studied. It was found that during the testing period, Lake Ińsko Duże was a mesotrophic reservoir, and Lakes Wądół, Będzin and Ińsko Małe were characterized by a highly advanced eutrophy. Lakes Woświn, Morzycko, Krzemień, Chłop Duży and Jelenin had borderline characteristics between being mesotrophic and eutrophic, while Lakes Narost, Chłop Mały and Wisala were typically eutrophic reservoirs. During the study, changes in the trophic level of Lakes Ińsko Duże and Morzycko and Woświn were noted. The first of the reservoirs listed had the best water quality in the second half of the 1990s, during which time the other two lakes had the worst water quality, taking into account the whole study period. Such changes were not observed in the other reservoirs examined.

Keywords

  • eutrophication
  • trophic level
  • Carlson Criteria
  • Western Pomeranian lakes
Open Access

The assessment of the impact of retention reservoirs on the water quality of streams in urban areas (Oruński Stream catchment case)

Published Online: 26 Jan 2013
Page range: 87 - 92

Abstract

Abstract

The goal of this paper is to assess the impact of reservoirs on the water quality of watercourses in the urbanized catchment. To realize this goal Oruński Stream catchment was characterized with particular emphasis on retention reservoirs located within the catchment. Studies carried out were to show that these retention reservoirs change the water quality of the stream flowing through it and what the direction of these changes is.

Keywords

  • water quality
  • retention reservoirs
  • nutrients
  • urban areas
Open Access

The dynamics of macrophytes in a lake in an agricultural landscape

Published Online: 26 Jan 2013
Page range: 93 - 100

Abstract

Abstract

Macrophytes are a group of aquatic organisms affected by constant changes. One of the main factors influencing the rate and direction of these changes is the way of basin management. The aim of this study was to determine the effect of changes in the management of a lake catchment area in an agricultural landscape on the qualitative and quantitative structure of macrophytes and assessment of the ecological status of the lake in question. The study was conducted in the years 1996, 1999 and 2011 in Lake Głębokie Uścimowskie. This lake is small (20.8 ha surface) and shallow (about 6 m depth). In the 1990s in Lake Głębokie Uścimowskie from 14 to 15 plant communities occurred, which occupied 2.9 ha of the lake. This represented only 14.1% of the lake. In 2011 there was a slight growth in the number of phytocenoses (16), and significant increase in the area of phytolittoral - 5.98 ha. In the 1990s the range of ESMI index values, allowed the lake to be categorized as one with poor ecological status, but already in 2011 after a similar analysis, the lake was ranked in the upper limits of moderate ecological status of lakes. One of the main reasons for the rise in the ecological status of Lake Głębokie Uścimowskie, determined on the basis of the macrophyte index, as well as for the slight decline in trophy, was probably a sewerage system built in 2006 in Głębokie village.

Keywords

  • macrophytes
  • shallow lake
  • ecological state
  • catchment
  • eutrophy
6 Articles
Open Access

The influence of the monsoon climate on phytoplankton in the Shibpukur pool of Shiva temple in Burdwan, West Bengal, India

Published Online: 26 Jan 2013
Page range: 47 - 63

Abstract

Abstract

A total of 44 taxa were observed in monthly sampled phytoplankton of the Shibpukur pool in Burdwan, West Bengal between March, 2010 and February, 2011. The most abundant taxa belong to Charophyta, followed by cyanobacteria, diatoms and euglenoids. Bio-indication shows that the pool community preferred low alkaline, low mineralized and low organically polluted water. The total phytoplankton density showed its maximum values in May, 2010. The Shannon-Weaver diversity index and the Pielou evenness value were found to be highest during the post-monsoon season. The Simpson dominance index and the Margalef index of richness were highest in the pre-monsoon season. The total phytoplankton density showed a highly significant positive correlation with pH and salinity and significant positive correlation with air temperature, water temperature, dissolved oxygen and total suspended solids. Among the reported 44 phytoplankton taxa only 3 showed a random distributional pattern. The Bray-Curtis Cluster analysis and the comparative statistics reveal two groups of phytoplankton assemblages in respect to the monsoon seasons. The successive communities form a continuum corresponding to Colwell’s Constancy (C) category. The calculated indices, CCA, and bio-indication analysis exhibit a low pollution level in the Shibpukur pool that can be used as a model of aquatic community dynamics under seasonal fluctuation in the monsoon climate, applicable for monitoring of water bodies in the West Bengal Province

Keywords

  • Phytoplankton
  • monsoon climate
  • natural reserve
  • West Bengal
  • India
Open Access

Water exchange of three shallow Łęczna-Włodawa Lakes

Published Online: 26 Jan 2013
Page range: 65 - 72

Abstract

Abstract

The research was carried out in three Łęczna-Włodawa lake-catchment systems, during the hydrological years 2007-2009. The observed lakes varied in terms of basin morphometry and catchment features. The hydrological functioning of the lakes resulted from three main factors: 1) storage capacity of the lake basin, 2) catchment area and relief, 3) human impact on water distribution. The vertical water exchange ratio in Lake Sumin was almost four-times higher than flushing time. In Lakes Rotcze and Syczyńskie horizontal water exchange, presented as flushing time was significantly higher than the vertical one.

Keywords

  • flushing time
  • lake basin
  • water budget elements
  • Łęczna-Włodawa Lake District
Open Access

General systems theory and the operation of basins without an outlet: A methodological aspect

Published Online: 26 Jan 2013
Page range: 73 - 78

Abstract

Abstract

Basins without outlets, often with a small water body at the bottom, are a characteristic element of a postglacial landscape. Areas nourishing those small landforms belong to the passive part of catchments of hydrographic systems and determine the retentivity of entire drainage basins. The most suitable approach to adopt in research on those objects seems to be the theory of a geoecosystem, a universal methodological conception used in describing geographical regions at various scales. It allows the use of quantitative research methods, and hence parameterisation of their environment. Thus, the geoecosystems of basins without outlets can provide foundations of their dynamic classification.

Keywords

  • theory of geoecosystem
  • basins without outlets
Open Access

Evaluation of trophic level of the largest dimictic lakes of western Pomerania based on the Carlson criteria

Published Online: 26 Jan 2013
Page range: 79 - 85

Abstract

Abstract

: Between the years 1970-2010, using the Carlson model criteria, the rate of eutrophication and trophic level of the largest dimictic lakes of Western Pomerania were studied. It was found that during the testing period, Lake Ińsko Duże was a mesotrophic reservoir, and Lakes Wądół, Będzin and Ińsko Małe were characterized by a highly advanced eutrophy. Lakes Woświn, Morzycko, Krzemień, Chłop Duży and Jelenin had borderline characteristics between being mesotrophic and eutrophic, while Lakes Narost, Chłop Mały and Wisala were typically eutrophic reservoirs. During the study, changes in the trophic level of Lakes Ińsko Duże and Morzycko and Woświn were noted. The first of the reservoirs listed had the best water quality in the second half of the 1990s, during which time the other two lakes had the worst water quality, taking into account the whole study period. Such changes were not observed in the other reservoirs examined.

Keywords

  • eutrophication
  • trophic level
  • Carlson Criteria
  • Western Pomeranian lakes
Open Access

The assessment of the impact of retention reservoirs on the water quality of streams in urban areas (Oruński Stream catchment case)

Published Online: 26 Jan 2013
Page range: 87 - 92

Abstract

Abstract

The goal of this paper is to assess the impact of reservoirs on the water quality of watercourses in the urbanized catchment. To realize this goal Oruński Stream catchment was characterized with particular emphasis on retention reservoirs located within the catchment. Studies carried out were to show that these retention reservoirs change the water quality of the stream flowing through it and what the direction of these changes is.

Keywords

  • water quality
  • retention reservoirs
  • nutrients
  • urban areas
Open Access

The dynamics of macrophytes in a lake in an agricultural landscape

Published Online: 26 Jan 2013
Page range: 93 - 100

Abstract

Abstract

Macrophytes are a group of aquatic organisms affected by constant changes. One of the main factors influencing the rate and direction of these changes is the way of basin management. The aim of this study was to determine the effect of changes in the management of a lake catchment area in an agricultural landscape on the qualitative and quantitative structure of macrophytes and assessment of the ecological status of the lake in question. The study was conducted in the years 1996, 1999 and 2011 in Lake Głębokie Uścimowskie. This lake is small (20.8 ha surface) and shallow (about 6 m depth). In the 1990s in Lake Głębokie Uścimowskie from 14 to 15 plant communities occurred, which occupied 2.9 ha of the lake. This represented only 14.1% of the lake. In 2011 there was a slight growth in the number of phytocenoses (16), and significant increase in the area of phytolittoral - 5.98 ha. In the 1990s the range of ESMI index values, allowed the lake to be categorized as one with poor ecological status, but already in 2011 after a similar analysis, the lake was ranked in the upper limits of moderate ecological status of lakes. One of the main reasons for the rise in the ecological status of Lake Głębokie Uścimowskie, determined on the basis of the macrophyte index, as well as for the slight decline in trophy, was probably a sewerage system built in 2006 in Głębokie village.

Keywords

  • macrophytes
  • shallow lake
  • ecological state
  • catchment
  • eutrophy

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