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Impact of lignite mine waters from deep seated drainage on water quality of the Notec River

100%

Staniszewski R., Diatta J. B., Andrzejewska B.

Journal of Elementology

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2014

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tom 19

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nr 3

Open-pit lignite mines affect many compartments of the environment. Surface mines cause changes in the catchment basin, re-shaping the land relief, modifying soil properties and depressing lake water levels as well as the groundwater table. Although the environmental concerns raised by this type of mines have been widely surveyed, we lack sufficient information provided by research reports on regarding the influence of lignite mines there on surface water bodies. In general, there are two types of mine waters from brown coal mining: runoff from the surface and water percolating from deep seated drainage. This paper discusses the impact of lignite mine waters from a deep seated drainage system in the Lubstów Mine on the quality of water in a lowland river. Lignite had been excavated in Lubstów until 2009, and untreated mine waters had been discharged to the Noteć River. The aim of the study was to assess possible changes of the river water quality after the long-term contamination with mine waters. For the assessment, three sites were selected (one above and two below the mine water inflow) for water sampling in order to perform chemical analyses according to standard methods (spectrophotometry, atomic absorption spectroscopy). Properties of mine waters, such as pH, conductivity, phosphorus, nitrates, sulphates, alkalinity and heavy metals, were analysed in samples taken directly from the canal which carried discharged mine waters to the Noteć River. The results showed that lignite mine waters from deep seated drainage generally caused minor changes in river water quality, except alkalinity, in which the water quality below the discharge point (site B) was significantly worse than at the upper site (A). Chemically, site C was similar to site A.

2

Biodegradation of polylactide in natural fresh water

100%

Heimowska A., Morawska M., Bocho-Janiszewska A.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

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2015

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nr 4

3

Bioinvasions in fresh waters and the Nero dilemna

100%

Gherardi F.

Polish Journal of Ecology

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2006

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tom 54

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nr 4

Human-mediated invasions of organisms are causing great harm to the environment, indigenous species, national economies, and human health. Notwithstanding Elton’s (1958) prophecies, only by the mid 1980s did the negative impact of several introduced species become clear, along with the urgency to reduce the pace of bioinvasions. Often conservation biologists are faced with the Nero dilemma. Should they keep “fiddling” with their elegant experiments while biota are burning, or rather act, even before achieving a “strong verification” of their hypotheses? Indeed, we do need a comprehensive scientific understanding of the biological features, ecological effects, and spread potential of invasive species in order to be able to improve our strategies for mitigating their impacts. Abundant data have been collected during the past two decades on a growing number of case studies. The theories on bioinvasions derived from that wealth of knowledge have indeed revealed their predictive power. We should now strive towards a quick transfer of this knowledge from the laboratories to the “real world”.

4

Toxic effect of norharmane on a freshwater plankton community

86%

Mohamed Z. A.

International Journal of Ecohydrology and Hydrobiology

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2013

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tom 13

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nr 3

5

Models from ecohydrology and hydrobiology can inform our human future

86%

Moss B.

International Journal of Ecohydrology and Hydrobiology

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2014

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tom 14

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nr 1

6

Detection of Cryptosporidium parvum in a red-eared slider turtle (Trachemys scripta elegans), a noted invasive alien species, captured in a rural aquatic ecosystem in Eastern Poland

86%

Rzezutka A., Kaupke A., Gorzkowski B.

Acta Parasitologica

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2020

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tom 65

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nr 3

7

A review of the fish introductions in Bulgarian freshwaters

86%

Uzunova E., Zlatanova S.

Acta Ichthyologica et Piscatoria

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2007

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tom 37

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nr 1

55-61

Background. Fish introductions have been a common tool to increase efficiency of utilization of water bodies and diversification of aquaculture production. As a result of increased interest in aquaculture and recreational fishing, throughout the past 70 years, the number of non-native fishes in Bulgaria has dramatically increased. This paper reviews the history, current state, and tendencies of the fish introductions in Bulgarian freshwaters. Materials and Methods. The statistical data about introductions and aquaculture production were provided by the National Agency Fisheries and Aquaculture (Ministry of Agriculture and Forestry). A part of the data for restocking activities was provided by Bulgarian Union of Hunters and Fishermen. The taxonomy of freshwater fishes was based on the review of Eschmeyer (2006). Results. At present, twenty-six exotic species have been intentionally or unintentionally introduced in Bulgarian inland waters. They represent 15% of Bulgarian′s freshwater fish fauna and provide more than 60% of aquaculture production. The most abundant are exotic cyprinids (Cyprinidae) and salmonids (Salmonidae), constituting 22% and 18% of all introductions, respectively. The most intensive import of non-indigenous fishes, namely East Asian herbivorous carps (Cyprinidae), into Bulgaria occurred in the middle of the 1960s. Only twelve species have been naturalized. Two of them (Lepomis gibbosus and Perccottus glenii) are considered invasive. Along with these fish introductions, parasites, bacterial and viral pathogens were imported. Conclusion. The results of different fish introductions into Bulgarian freshwaters are controversial. Along with the positive influence on the aquaculture development, some extremely negative consequences, such as introduction of pathogens and spread of invasive species were observed. New introductions of fish species should not be made without scientific analyses evaluating the potential effects of introductions. Research, education, and strict control are the key tools of any effort to prevent the spread of the alien fish species.

8

Surface and near-bottom water saturation with CaCO3 in the Pomeranian Bay in the vicinity of the Swina Channel mouth

86%

Poleszczuk G.

Oceanological and Hydrobiological Studies

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2008

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tom 37

|

nr 4

93-99

9

From research to operational biomonitoring of freshwaters: a suggested conceptual framework and practical solutions

86%

Lafont M., Tixier G., Marsalek J., Jezequel C., Breil P., Schmitt L.

International Journal of Ecohydrology and Hydrobiology

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2012

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tom 12

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nr 1

10

Changes in density and species composition of Gastrotricha in stored samples

86%

Nesteruk T.

Acta Hydrobiologica

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1998

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tom 40

|

nr 1

11

Morphometric characters of the freshwater American crayfish, Orconectes limosus Raf., from the Vistula Lagoon [Poland]

86%

Szaniawska A., Normant M., Michalowska M., Kaminska A.

Oceanological and Hydrobiological Studies

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2005

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tom 34

|

nr Suppl.1

12

Survival of Escherichia coli in freshwater

86%

Wcislo R., Chrost R. J.

Polish Journal of Environmental Studies

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2000

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tom 09

|

nr 3

Experiments on the survival of Escherichia coli were conducted in the water of man-made Zegrzynski Reservoir. The aim of this study was to evaluate how selected biocenotic factors (predation, coliphage infection, presence of autochthonic microflora and nutrient conditions) affect this process. We observed residual living cells of E. coli up to about thirty days of the investigation. We found that the major factor that was responsible for mortality of E. coli was microflagellate grazing and exposure to an aquatic environment. Size-selective preferences of microflagellates toward E. coli cells were observed. No visible effect of bacteriophages on the survival of E. coli was detected. Better nutritional condition and the presence of native heterotrophic microflora significantly prolonged the survival time of E. coli in the studied environment.

13

Novel Polish recordings of rare aquatic Oligochaeta species

86%

Dumnicka E., Poznanska M.

Oceanological and Hydrobiological Studies

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2006

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tom 35

|

nr 2

14

Change in N and P concentrations in Antarctic streams as a response to change in penguin populations

72%

Nedzarek A.

Papers on Global Change

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2010

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nr 17

This study presents changes in the concentrations of nitrogen and phosphorus in two streams in Western Antarctica (Admiralty Bay, King George Island, South Shetlands) that differ in trophic status. The results suggest a decline in concentrations of the determined forms of N and P between 2001 and 2005. The decrease ranged from 9.3% for reactive phosphorus to 73.2% for ammonium-nitrogen. Such inferred declines in N and P concentrations are considered to reflect reduced deposition on land of organic matter brought in from the seas by the penguins nesting in the area. The ultimate cause of this is in turn the steady decline in abundance that is being noted for these penguins.

15

Freshwater green algal biofouling of boats in the Kabul River, Pakistan

72%

Khuram I., Ahmad N., Jan S., Barinova S.

Oceanological and Hydrobiological Studies

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2014

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tom 43

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nr 4

16

Ecohydrology - the use of water and ecosystem processes for healthy urban environments

72%

Zalewski M., Wagner I.

International Journal of Ecohydrology and Hydrobiology

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2005

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tom 05

|

nr 4

17

Determination and discrimination in characteristics of coastal habitats in some parts of ‘Bhal’ region

72%

Vyas S. J., Joshi A. J.

International Letters of Natural Sciences

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2014

|

tom 19

Gujarat has a coast line of approximately 1700 Km, varying in different habitat conditions. The state has two gulfs viz., gulf of Khambhat and gulf of Kachchh. Edaphic conditions of different habitats in ‘Bhal’ region of Gujarat state which falls in two districts viz. Ahmedabad and Bhavnagar district of Gujarat state. The coastal vegetation depends on the edaphic conditions of the region. The coastal flora of the ‘Bhal’ region belonging to Bhavnagar district has species like Suaeda nudiflora, Prosopis chilensis, Dichanthium annulatum, etc. The ‘Bhal’ region has marshy, wetland and semi-arid habitat. The present study investigates different physico-chemical parameters like Electrical Conductivity, pH and Sodium Adsorption Ratio, as well as mineral ion Sodium, Potassium, Calcium, Magnessium and Chloride concentration in the soil of ‘Bhal’ region.

18

Experimental investigation of hydraulic resistance in pipe aerators

72%

Kalenik M., Morawski D., Stanko G.

Electronic Journal of Polish Agricultural Universities. Series Civil Engineering

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2006

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tom 09

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nr 4

19

Differences in the relationship between bacterial count decay and storage time in Antarctic freshwater samples

72%

Allende L.

Polish Polar Research

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2006

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tom 27

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nr 1

63-69

The mathematical model that described the relationship between cell-count decay and storage time in fixed bacterioplankton samples from three Antarctic lakes of differing trophic status was determined after a one-year experiment. Bacterial density was estimated by epifluorescence microscopy. Cell count data fitted a negative exponential model in all three cases (p < 0.00001). However, the slopes of their curves were significantly different (p < 0.01), as well as the percentage of bacterial loss after a period of two months. This fact might be related to the limnological characteristics of the water bodies, though the individual genetic variability of their bacterioplankton should not be left aside. Original bacterial numbers in the samples could also be a reason of the differences observed in the pattern of decay in cell counts. Thus, applying a general decay function to any sample and assuming the idea that freshwater bacterioplankton samples can be stored for a two month-period before the bacterial counts decay, can lead to an erroneous estimation of bacterial numbers with direct consequences in ecological investigations.

20

Estimation of zooplankton mortality caused by an Arctic glacier outflow

72%

Zajaczkowski M. J., Legezynska J.

Oceanologia

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2001

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tom 43

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nr 3

341-351

The outflow of freshwater from underwater channels in the Kongsbreen tidal glacier in Kongsfjorden, Svalbard, 79◦ N, was measured as 138.8 m3 s−1 at the peak of the melting season. Experiments on local marine plankton mortality show that when exposed to salinities below 9 PSU, all copepods die within 15 minutes. We estimate that during 100 days of the melting season, as many as 85 tonnes wet weight (WW) of plankton is removed from the water column due to osmotic shock, which makes up 15% of the standing zooplankton biomass of the fjord. The dead zooplankton sinks after exposure to low salinities and is probably an important food source for scavenging benthic fauna in the fjord. This mechanism could be responsible for the high numbers of Onisimus caricus near the glacier front.

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