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Water quality assessment of the South-Eastern part of Lake Lanao, Philippines

100%

Angagao N. B., Quiao M. L. D., Roa E. C., Prado G. I.

International Letters of Natural Sciences

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2017

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tom 63

This paper aimed at underlying some physico-chemical characteristics of the water of Lake Lanao at Poona-bayabao, Lanao Del Sur during the first quarter of 2015, by evaluating a total of eight (8) water quality parameters. Physical parameters were temperature, depth, transparency, and total suspended solids. On the other hand, the chemical parameters were pH, dissolved oxygen, phosphate and nitrate. Three sampling stations were considered in the study. Community’s knowledge, perceptions, and attitudes towards the utilization and condition of the lake were also evaluated through interview. Results showed that all assessed physico-chemical parameters still conformed to the Philippines standards set by Department of Environment and Natural Resources (DENR) for fresh surface water as Class A as for the year 2015. One-way Anova showed no significant difference in the overall average of the physico-chemical characteristics in the three sampling stations of Lake Lanao (p > 0.05). With the results obtained, the Lake can still be a source of water supply that require complete treatment in order to meet National Standards for Drinking Water (NSDW) of the Philippines, within the year of the conduct of the study. For the assessment of community’s knowledge, perceptions, and attitudes, Kruskal-Wallis test showed that the knowledge, perceptions, and attitudes are not significantly different in terms of stations. A more comprehensive and wider range monitoring is recommended for future study about the lake.

2

Effect Cynkotox [Zineb] on the survival of some indicator bacteria and enteric pathogens in lake water

100%

Niewolak S., Komar M., Golas I.

Polish Journal of Natural Sciences

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2002

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tom 12

3

Quality of the dissolved organic matter [DOM] in the water of Lake Wigry [spectrophotometric analysis]

86%

Dunalska J., Zdanowski B.

Polish Journal of Natural Sciences

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2004

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tom 16

214-221

4

Water chemistry of Lake Gilwa

86%

Grochowska J., Tandyrak R.

Journal of Elementology

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2010

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tom 15

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nr 1

89-99

The study was carried on Lake Giłwa (100.8 ha, 9.4 m), in the drainage basin of the Giłwa and Pasłęka rivers. The data obtained in the study allowed the authors to classify Lake Giłwa as a water body belonging to the third stability degree according to Patalas (1960). As evidenced in the study, Lake Giłwa is a highly eutrophic reservoir. The lake waters were characterized by a high content of nutrients, up to 1.40 mg P·dm-3 and 12.47 mg N·dm-3. The high fertility of the lake was also exhibited by the values of BOD5 reaching 7 mg O2·dm-3, chlorophyll a content (73 mg·m-3) and low transparency — 0.7 m. In the peak of the summer, the stagnation oxygen profile is represented by a clinograde curve typical for eutrophic lakes, while carbon dioxide distribution in the water column is shown by a „reverse” clinograde curve, also typical for fertile reservoirs. The study has revealed that the water in Lake Giłwa is well buffered, as shown by the alkalinity values, 2.5-5.0 mval dm-3. Total hardness of the reservoir water varied from 157.1 to 278.8 mg CaCO3·dm-3, which is typical of hard water. The hardness was conditioned mainly by the calcium content. With the River Giłwa, the lake receives wastewater from the wastewater treatment plant in Gietrzwałd, which is manifested, for example, by the high values of electrolytic conductivity (321-476 µS·cm-1), indicating the degree of mineral pollution of the lake. Despite the wastewater input, the amount of chlorides is rather low, 20 mg Cl·dm-3 at the most.

5

Water budget of the Zdworskie Lake in 2008–2012 period

86%

Popek Z., Wasilewicz M., Bankowska A., Boczon A.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2013

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tom 45

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nr 1

The paper presents the results of water balance calculations for the Zdworskie Lake, Poland, based on meteorological and hydrological data of 2008–2012 period. Meteorological data have come from automatic measurement station located near Łąck in a distance of about 7.5 kilometer from geometric center of the Zdworskie Lake. The station is a part of the monitoring system of The State Forests National Forest Holding. Hydrological data has been collected from five water-gauging stations located in the Wielka Struga River catchment to which belongs the Zdworskie Lake. The water-gauging stations has been established by Department of Water Engineering of Warsaw University of Life Sciences – SGGW within monitoring net constructed as a part of the Restoration Programme of the Lakes in the Łąck Commune, Płock district. Water balance calculations revealed that throughout the analyzed period the retained water amount in Zdworskie Lake should be much larger than it was actually observed. Groundwater level fluctuations observed in one of the water-gauge sections together with geological conditions in the immediate lake catchment area suggest periodic outflow of the lake water into the ground. In the years 2008–2012 the annual loss of lake water caused by the groundwater alimentation varied ranging from about 761,000 to 2,078,000 m3.

6

Effect of fungicide Topsin M70 WP [Thiophanate-methyl] on the survival of some indicator bacteria and enteric pathogens in lake water

86%

Niewolak S., Komar M., Golas I.

Polish Journal of Natural Sciences

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2002

|

tom 10

7

The effect of temperature and organic substances on the survival of Escherichia coli and Streptococcus faecalis in lake water

86%

Zmyslowska M.

Polish Journal of Environmental Studies

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1993

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tom 02

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nr 2

Studies have shown that the bacteria strains Eschericha coli and Streptococcus faecalis survive 2 to 8 days longer at 4°C than at 20°C in the same lake water samples. An addition of glucose to lake water increased survival of these bacteria strains by 2 to 4 days. An addition of peptone was even more effective. Survival of E. coli increased by 5-15 days, and of Str. faecalis by 11-19 days. It was also found that E. coli showed longer survival than Str. faecalis in water samples with no organic additives and those containing glucose. In the case of water samples with peptone, survival of the two strains did not differ.

8

Seasonal changes of survival of Escherichia coli, Streptococcus faecalis, Salmonella typhimurium and Salmonella typhi dublin in lake water

86%

Niewolak S., Mindrow M.

Polish Journal of Environmental Studies

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1998

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tom 07

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nr 1

Survival in an annual cycle of Escherichia coli, Streptococcus faecalis, Salmonella typhimurium and Salmonella typhi dublin were examined in non-sterilized lake water, water sterilized by heating in an autoclave (121°C/10 min.), incubated without light at 4 and 20°C, respectively. All examined bacterial strains generally survived for shorter periods in non-sterilized lake water than in sterilized lake water, and shorter at 20°C than at 4°C. Survival curves of these bacteria in non-sterilized lake water were similar to a logarythmic curve, whereas in sterilized lake water they resembled a sigmoidal curve regardless of incubation temperature. The time necessary for 90% reduction of these bacteria ranged from 1 to 32 days. It was generally shorter in non-sterilized lake water and longer for sterilized water; and it was shorter for Streptococcus faecalis and longer for Escherichia coli, Salmonella typhimurium and Salmonella typhi dublin. All four examined bacteria were more quickly reduced in summer, and slower in spring, autumn and winter.

9

Changes in the quality of water in Brdowskie Lake in 1997-2006

72%

Staniszewski R., Szoszkiewicz J.

Journal of Elementology

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2010

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tom 15

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nr 4

705-712

Most lakes in Poland are shallow and vulnerable to degradation mostly due to lake morphology and landscape structure. Other factors, like discharged sewage, internal loading and human activities in the watershed are also important. During studies on Brdowskie Lake, water samples were taken twice a year (spring and summer season) from the surface layer and analyses of soluble reactive phosphates, total phosphorus, nitrates, conductivity, five-day biochemical oxygen demand, chlorophyll a, dry mass of seston and Secchi depth were undertaken. Brdowskie Lake is situated in Kujawskie Lakeland and its catchment basin covers about 155.3 km2. The littoral vegetation is dominated by reed bed with a minor presence of other taxa. The lake is very susceptible to degradation (morphology, agricultural lands, housing) and has several potential sources of pollution, e.g. Noteæ River, a nameless stream and summer houses. In general, water quality of the lake was better during the spring season, especially in terms of chlorophyll a and dry mass of seston concentrations. In 1997- -2006, the level of conductivity was very changeable with the maximum values observed in 1999-2001. Significant correlations between some parameters in certain seasons of the year were found, e.g. between chlorophyll a and Secchi depth during spring and total phosphorus and phosphates in summer. The impact of water level fluctuations on water quality parameters, like total phosphorus and chlorophyll a was observed. According to the results, the quality water in Brdowskie Lake is improving. After a biological wastewater treatment plant in the catchment had opened, the rate of salts flowing into the lake with sewage was reduced.

10

Trophic status of the Rusalka Lake in Szczecin in years 1999-2010

72%

Poleszczuk G., Bucior A., Tokarz M., Pierwieniecki J.

Zeszyty Naukowe. Acta Biologica. Uniwersytet Szczeciński

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2012

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tom 19

Trophic status of the Rusałka Lake wartes in inflow zone of Osówka Stream to Rusałka Lake reservoir in month April in years 1999, 2001, 2003, 2005, 2007 and 2010 – based on data of TP concentrations in water – was as hypertrophic determined, for except year 2007 whenas the thaw waters thinned the investigated waters that they waters were eutrophic. The added results with lead simultaneously with measurements concentrations TP the signs pH, concentration DO, COD-Cr as well as the concentrations NO3–, NH4+,TN, SRP and Ca2+and Cl – permitted on performance the general biotope characteristic of Rusałka lake water in early spring period in high exchange years and the proof, that the quality of investigated waters estimated on the basic of high exchange coefficients was stabilized, meanwhile the occurrence statistically significant differentiations the individual values of determined coefficients in next years in reference to year 1999 – was connected with changes weather influencing in changes size and date of rafting thaw waters.

11

Effect of some herbicides on the survival of bacteria indicating sanitary conditions and of enteropathogens in lake water. The influence of Afalon

72%

Niewolak S., Komar M.

Natural Sciences

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2001

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tom 08

101-110

12

Thermal characteristics of waters of Wielki Staw in Karkonosze Mountains and Morskie Oko in the Tatras, July 2006

72%

Choinski A., Lyczkowska G.

Polish Journal of Environmental Studies

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2008

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tom 17

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nr 5

835-840

The temperature of standing water is one of the most frequently measured abiotic parameters of lakes. While some of the Tatra lakes have been investigated in modern times, those in the Karkonosze Mountains have never been an object of planned, systematic thermal studies. Our article presents the results of a unique methodology of research on the thermal characteristics of waters of Wielki Staw and Morskie Oko. They yielded full information about the vertical distribution of water temperatures in both lakes in an exceptionally warm month - July 2006. By employing gradient thermal probes, it was possible not only to give a general description of the thermal conditions of the lakes and the current development of stratification, but also to grasp the pattern of momentary fluctuations in the water temperatures of both lakes. The research has proved that the thermal conditions of the two mountain lakes largely result from their individual morphometric diversity. Also, in terms of thermal characteristics, the lakes should not be treated on a par with those of the other geographical regions of Poland; in favourable circumstances, the temperatures of their surface waters can reach values rarely met even among lowland lakes.

13

Influence of pollution sources of points and areals differentiation of the concentration of phosphorus and nitrogen compounds in water of Mały Jeziorak Lake

72%

Domska D., Wojtkowiak K.

Polish Journal of Natural Sciences

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2010

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tom 25

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nr 3

There were showed influence of the points (local and city reception basin outflow) and the areas (recreation area and wasteland) differentiation of pollution sources on the concentration of nitrogen and phosphorus compounds in water of Mały Jeziorak Lake. There were analyzed NO₃⁻, NO₂⁻, NH₄⁺, total P and PO₄⁻³ content. Results of the studies were indicated that the most components concentration was low in I class of water cleanliness. There was more ammonium and nitrate nitrogen content near the recreation area and more nitrate nitrogen content in spring and summer time near the dairy outflow. Moreover, higher total phosphorus content but not more than in I class of water cleanliness norm were in the lake water with village rain outflow and near the recreation area and, phosphates content in II class water cleanliness in spring time near the recreation area.

14

The history of coastal lakes studies with a special regard to Lake Gardno

72%

Paturej E.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

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2001

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tom 05

15

Comparing the effect of phytoplankton and a charophyte on calcite precipitation in lake water: experimental approach

72%

Kufel L., Rymuza K.

Polish Journal of Ecology

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2014

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tom 62

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nr 3

Primary producers are able to strongly affect calcium budget in hardwater lakes. The relative contribution of phytoplankton and charophytes to water decalcification (by precipitation of calcium carbonate) is, however, unclear. In this study we checked the effect of natural phytoplankton community and a charophyte (Nitellopsis obtusa) on the decline of calcium concentration in experimental outdoor conditions. The experiment was carried out in original lake water and two variants of enrichment with inorganic nitrogen and phosphorus to test the changing efficiency in decalcification by both primary producers. At low nutrient concentrations, N. obtusa was responsible for calcium decline in original lake water by 12 mg Ca+2 dm–3 during 20 days of experiment. In these conditions the effect of phytoplankton was negligible. In lake water enriched with nutrients, the exponential growth of phytoplankton led to the decrease of calcium concentration from initial 35 mg Ca+2 dm–3 to 9 mg Ca+2 dm–3 in the same time period. The maximum effect of N. obtusa was the same as in original lake water but manifested itself earlier to decline in the end of experiment. Supersaturation of water with calcium carbonate was always more than threefold and saturation index reached 27 in mixed cultures of phytoplankton and N. obtusa in lake water enriched with nutrients. In this context we hypothesise on a possible role of charophytes as nucleation sites necessary for calcite precipitation. Based on our own and literature data we also discuss expected immobilisation of phosphate incorporated in calcite precipitated by the growth of phytoplankton and N. obtusa.

16

Assessment of water quality and nutrient balance of a small lake in urban landscape – case study of Rusałka lake in the Wielkopolskie Lakeland

72%

Janicka E., Kanclerz J., Jany J., Adamska A., Murat-Blazejewska S.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2018

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tom 50

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nr 3

17

Assessment of the state of water quality of the Dzierzgon Lake using chemical and biological indicators

72%

Frak M., Baryla A.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2012

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tom 44

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nr 2

The paper presents an assessment of the state of water pollution of the Dzierzgoń Lake based on bacteriological indicators. Water samples were taken at two measurement points in four study periods in July and August 2011 and 2012. A total number of psychrophilic bacteria and MPN of faecal coliforms were determined. In addition, selected chemical parameters of water quality were analyzed, including total organic carbon and total nitrogen. The results were compared with those obtained by the Provincial Inspectorate for Environmental Protection in 1998 and 2004, and by Rychlik in 2009. It can be concluded that the sanitary condition of the Dzierzgoń Lake is satisfactory.

18

Analysis of water temperature fluctuations in Lake Jamno

72%

Ptak M., Sojka M., Choinski A.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

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2018

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tom 22

The paper presents the analysis of thermal conditions of coastal Lake Jamno. The long observation series (1971-2013) for the course of surface water temperature suggests its considerable warming (0.28°C∙dec-1). In the monthly cycle, an increase in surface water temperature is observed in all cases except for the winter period (December, January, February). Water was heated the fastest in April (0.58°C∙dec-1) as well as May and September (0.46°C∙dec-1). Mean annual air temperature increased at a similar rate (0.27°C∙dec-1), but the coefficient of correlation of both media equalled 0.40. This suggests that other factors could contribute to the change in surface water temperature. One of such factors could be marine water intrusions. The strongest positive correlations of water temperature in Jamno and water level in the Baltic Sea occurred in the cold half-year, and negative in the warm half-year. From 2013, on the canal connecting Lake Jamno with the Baltic Sea, a storm gate was constructed that altered many processes and phenomena occurring in the lake so far. The paper covers the natural (quasi-natural) period of functioning of the lake, and provides a point of reference for future research on its thermal regime considering among others the effect of human pressure in the form of hydrotechnical infrastructure.

19

The effect of humic substances isolated from a variety of marine and lacustrine environments on different microorganisms

72%

Kupryszewski G., Pempkowiak J., Kedzia A.

Oceanologia

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2001

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tom 43

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nr 2

The antimicrobial activity of twelve preparations of humic substances isolated from sea water, marine bottom sediments and lake water was examined. Humic substances from marine bottom sediment samples were fractionated into humic and/or fulvic acids. The susceptibility of 11 strains of anaerobic, 8str ains of aerobic bacteria and 2 strains of yeast-like fungi to preparations of humic substances, humic and/or fulvic acids was determined employing the plate dilution technique in Brucella agar (anaerobic bacteria), Mueller-Hinton agar (aerobic bacteria) and Sabouraud agar (yeast-like fungi). Concentrations from 150 to 600 μg ml−1 of the preparations examined inhibited the growth of numerous microorganisms (Table). The results obtained seem to indicate that humic substances are involved in the self-purification of sea and lake waters.

20

Possibilities to reduce internal loading to lake water by artificial aeration

72%

Gawronska H., Brzozowska R., Grochowska J., Lossow K.

Polish Journal of Environmental Studies

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2003

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tom 12

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nr 2

The influence of artificial aeration on chemical composition of bottom sediments and nutrient exchange was investigated in heavily polluted Lake Długie. Analyzed were variations in the content of nitrogen and phosphorus compounds in near-bottom water, interstitial water and bottom sediments. The obtained results have confirmed a positive role of many years’ artificial aeration in reducing the internal loading of nutrients. At the current stage of the survey, it is not possible to determine explicitly whether artificial aeration has had an effect on the chemical composition of bottom sediments.

Ograniczanie wyników

Water quality assessment of the South-Eastern part of Lake Lanao, Philippines

Effect Cynkotox [Zineb] on the survival of some indicator bacteria and enteric pathogens in lake water

Quality of the dissolved organic matter [DOM] in the water of Lake Wigry [spectrophotometric analysis]