Water Quality and Phytoplankton Composition of Lake Pandin in San Pablo, Laguna (original) (raw)
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MACROINVERTEBRATES AS INDICATORS OF WATER QUALITY IN LAKE APO, GUINOYURAN, VALENCIA CITY, BUKIDNON
Science Investigatory Project, 2015
The anthology of macroinvertebrate in Lake Apo, Guinuyoran, Valencia, Bukidnon was conducted and a total of four (4) families namely Gerridae, Gomphidae, Palaemonidae, and Thiaridae, three (3) genera namely Macrobrachium, Melanoides, and Vivapara Costata; and two (2) species namely Macrobrachium sp., and Melanoides sp., were identified from all stations. Further examination and verification is needed in order to get more details regarding the taxonomic classification. The Hilsenhoff Biotic Index (HBI) of Lake Apo is 6.42 which falls into the category “poor” water quality. This indication is highly possible because of the presence of pollution-tolerant macroinvertebrates. According to the results, the lake is polluted and is less likely to support a wide variety of macroinvertebrate species. Although, the presence of pollution-sensitive species of macroinvertebrates such as the dragonfly larvae can live in the river, it will less likely to survive for a long period of time because it lacks mechanisms to resist the pollution in the lake. Moreover, the physico-chemical data were considered suitable for the adaptation of some macroinvertebrate species. The pH with the overall mean of 7.6 indicating “satisfactory”; temperature with the overall average value was 26.36○C ; turbidity value of 11.04 NTU falls into the category “excellent”; dissolved oxygen with the mean value of 21.95% which indicates “poor”. All parameters except for the dissolved oxygen passed the standard of the World Health Organization indicating desirable quality for aquatic life to thrive. Thus, data findings reject the null hypothesis that Lake Apo is not ecologically disturbed and aquatic organisms are far deteriorating. It is recommended that a regular and long-term sampling in order to entirely assess macroinvertebrates in the lake. Through this, researchers can collect a greater number of organisms for a much detailed water quality monitoring. Biomonitoring by means of Standard Operation Procedure and metrics including the Hilsenhoff Biotic Index (HBI) should be incorporated together in order to acquire a more accurate and reliable biological assessment. Finally, the community and the settlers nearby the lake should be informed about the results of the study. That there should be a continuous monitoring strategy to be employed on the water quality and manage the lake properly because of its domestic, economic, and recreational value. Proper management should be taken action in preserving and conserving the lake ecosystem.
Basic limnology of Lago Bonilla, a Tropical lowland lake
Lago Bonilla, located 370 m above sea level on the Eastem slopes of Volean Turrialba, Costa Rica, was vis ited four times during 1990-1991. Basic Iimonologica1 data were recorded in each visit. lt is oligomietic, mixing dur ing the coldest and windiest months sometime between Nov. and Feb, and eutrophic, with low Secchi transparencies, Cyanobacteria dominance and almost permanent anoxic conditions in the deepest portion. A shift in N to P ratio was observed, indicating a variation in the limiting factor during the year; N beco mes Iimiting during the driest months probably as a result of a lower input from the catchment due to lower runoff, coupled with a higher P input from the sediments during deep mixing periods. However, Iimitation by P was probably stronger than N when it occurred, according lo the N/P ralios. Phytoplankton in epilimnetic waters comprised 58 algal species, and was dominated by Cyanobacteria and Chlorophyta. Only a few species dominated Ihe community, mainly Cylindrospermum mínímum. and Tetraedron mínimum, rendering low diversity values. Zooplankton was also poor: only seven species were found. There were some indications of vertical migrations of sorne zooplankters.
Greener Journal of Biological Sciences, 2014
Abijata-Shalla Lakes National Park is well known in its bird diversity and saline crater lakes. These lakes are most important feeding site of flamingos. However, much of their physico-chemical and its biotic information are not reviewed. The study was carried out from October 2011 to November 2013 during wet and dry seasons to fill the identified gap in physico-chemical characteristics, phytoplankton and level of heavy metals. Physico-chemical characteristics of water were measured using a multiparameter portable instrument (AQUAVIA, Model S× 723 PH/mV/ Cond Meter). For the chemical analysis water samples were collected from the surface water using polyethylene bottles, and were analyzed using standard methods. Phytoplanktons were collected with a phytoplankton net seasonally, counted and identified. A total of 23 genera were identified from Lake Abijata. Comparatively, a higher number of species was recorded during dry than the wet season. The compositions of phytoplankton were dominated by Arthrospira fusiformis in Lake chitu and Bacillariophyceae in Lake Abijata. In Lake Abijata Bacillariophyceae community was hold 91.21% of the plankton abundance. Value of pH and temperature showed insignificant variation, conductivity, salinity and TDS varied widely between lakes and rivers. Water chemistry analysis reflected sodium as the major cation while chloride and bicarbonate were the major anions. The findings of heavy metal indicated that the mean concentration of Zn was 0.14 mg/l, CU 0.009 mg/l, Pb 0.039 mg/l, Fe 6.17 mg/l and Cr 0.109 mg/l/. Cadmium was not detected in the water samples. The levels of most heavy metals recorded in water were generally low, when compared to the international permissible limits. The analysis of phytoplankton of lakes indicates the water of lakes can be considered different.
LIMNOLOGICAL STUDY OF LAKE TANGANYIKA, AFRICA WITH SPECIAL EMPHASIS ON PISCICULTURAL POTENTIALITY
PhD Thesis, 2020
The water of Lake Tanganyika is subject to changes in physicochemical characteristics resulting in the deterioration of water quality to a great pace. The present investigation was carried out on Lake Tanganyika at 4 sampling sites and aimed to assess the water quality with reference to (i) its suitability for fish culture purposes, (ii) determining the trophic and pollution status of the sampled stations, (iii) assessing the qualitative and quantitative pattern of planktons diversity as fish food, (iv) establishing an inventory and taxonomic characterization of fish species diversity and (v) highlighting the effect of pollutants on the abundance and spatial distribution of fish species. The physico-chemical and biological parameters of water samples were compared to desirable and acceptable international standards for fish culture and the results of comparative analysis indicated that the Lake has a high fish potential as the most important of the water quality parameters were suitable for fish culture. The investigation revealed the occurrence of 75 species belonging to 7different orders and 12 families in all sampling sites and among the different species recorded, those belonging to the order Perciformes and the family Cichlidae were most dominant. The values of transparency, chlorophyll a and total phosphorus were indicative of eutrophication phenomenon. Besides, Kajaga and Nyamugari stations were found heavily polluted while Rumonge and Mvugo Stations were moderately polluted and for this purpose, three categories of fish species have been distinguished, depending on their adaptation level to pollution: polluosensitive species, polluotolerant species and polluoresistant species. With respect to planktons community results, it was found that all the values obtained were within the permissible limits recommended in pisciculture and, the abundance and diversity of phytoplankton species were far greater than those of zooplankton species with 115species belonging to 7differet families for phytoplanktons against 10species belonging to 4families for zooplankton population in all sampling stations.
Seasonal Variation of Water Quality Parameters and Plankton in a Shallow Greek Lake
Journal of Freshwater Ecology, 2003
The study represents the result of a two year monitoring work, with quaterly sampling, from 17 sampling points. The influence of seasonal changes on the physico-chemical characteristics of water resources quality in the Chirita reservoir has been investigated. The study highlights the natural variations of the different water quality parameters of the water lake. Temporal and spatial variations of variables were illustrated through GIS based maps. The pH values of the water samples ranged between 6.856 in winter -to 8.81 in spring, with a mean value for all period of 8.171. The EC and TDS showed the same spatio-temporal patterns, with a range of 539 in autumn and 3240 mg.l -1 in spring, with a mean of 969.87 mg.l -1 , while for phosphates being recorded a range of 0.0203 in autumn -0.384 mg.l -1 in spring with 0.129 mg.l -1 mean value. All studied parameters showed significant temporal differences and partial spatial variability. The seasonal changes in water quality were influenced mostly by trophicity, organic pollution, oxide-related process, erosion as well as anthropogenic activities.
Journal of Environmental Protection, 2019
The physico-chemical water quality of the Obafemi Awolowo University Teaching and Research Farm Lake, Ile-Ife, Nigeria, was studied over an annual cycle (September 2006 to August 2007) almost 40 years after its impoundment in 1967. This was with a view to obtaining the then current state of physico-chemical water quality parameters with their variations in time and space as well as using some of the data obtained to evaluate the aging process of the lake for the 40 years of its existence. There was no significant (p > 0.05) horizontal variation (i.e. upstream-dowstream) in the physico-chemical characteristics of the lake whereas, Apparent-color, True color, Turbidity, Total Suspended Solids (TSS), Total Solids (TS) and Total Acidity increased significantly (p < 0.05) from the lake surface towards the bottom of the lake. On the other hand, water pH, Dissolved Oxygen (DO); Dissolved Oxygen Saturation (DO% Sat.) and Biochemical Oxygen Demand (BOD 5) decreased significantly (p < 0.05) from the lake surface towards the bottom of the lake. Dissolved Oxygen (DO), Dissolved Oxygen Saturation (DO% Sat.) and Nitrate ion (3 NO −) were significantly higher (p < 0.05) in the dry season than in the rainy season while, True colour, pH, Conductivity, Total Hardness, Calcium ion (Ca 2+), Magnesium ion (Mg 2+), Potassium ion (K +) and Sulphate ion (2 4 SO −) were significantly higher (p < 0.05) in the rainy season than in the dry season. The lake water could be regarded as shallow, coloured, turbid, less transparent, slightly acidic, soft and well-buffered fresh-waterbodies with evidence of aging (i.e. transforming the lake from an oligotrophic status to a eutrophic waterbody). The results indicated that the lake is suitable for most of its applications with little or no adjustments as the case may be; except probably for drinking purposes where some microbial analysis may be necessary.
Physico-chemical and biological aspects of Lake Albano
The Colli Albani Volcano
A study on some physico-chemical and biological variables of water quality was conducted on a coastal river in Ivory Coast. It's a first assessment on water quality state. Those coastal rivers actually play an important role in the physical, biological and hydrological exchange between lagoons and the sea. Unfortunately, they are not taken into account by the national monitoring for water quality (RNO-CI). The samples were collected along Boubo river body through three stations, in the south of Côte d'Ivoire, during two years. Results show sharp fluctuations of the concentration N-NO 3 nitrate, N-NH 4 + ammonium and chlorophyll a with more than 20% variation. However, small fluctuations were noted for temperature, pH and conductivity with 4-20%. Measures are generally inferior to the threshold for hazardous water class. But respective average concentrations of N-NO 3-, P-PO 4 3-, DCO and DBO 5 are above natural water threshold, representing 67% of the analyzed samples of P-PO 4 3and 100% of the other. These results show that the river is not exempt of pollution: 0.2 mg.L-1 of P-PO 4 3and 0.9 mg.L-1 of N-NO 3 are the limit of appropriate siege for the proliferation of invasive aquatic plants (IAP).
Assessment of physicochemical and biological characteristics of La Salada shallow lake (Argentina) using high frequency buoy data Argentinian Pampean lakes are shallow and naturally eutrophic. Because their great area/volume ratio can respond to environmental, hydrological and anthropogenic changes modifying their water characteristics. La Salada is a saline shallow lake located in the South of Buenos Aires Province (Argentina) which water level is controlled. The aim of this study is to describe and evaluate the response of the physicochemical and biological characteristics to environmental changes and water management. High frequency data were obtained from a buoy installed in the lake, that measures the main meteorological and hydrographical parameters from October 2012 to September 2013. In addition, monthly measurements with an HORIBA U10 meter and water samples and zooplankton samples (47 µm mesh pore size net) were taken. Transparency was measured with a Secchi disk.. Monthly...
Temporal Variation of Eutrophication Assessment of Lake Bosomtwe, Ghana
Environmental Research, Engineering and Management, 2016
Bosomtwe Lake is a freshwater lake in the Ashanti Region of Ghana, and is the habitat for many native plant and animal species. It is also a place for tourism and, therefore, the water quality and health status of the lake are vital for conservation of species and tourism. The main objective of this study was to examine the water quality of the lake in relation to nutrient load and possible eutrophication of the lake. It also explored the correlation between some physico-chemical parameters of the lake to inform policy direction on a watershed management strategy of the lake. A total of 40 samples were taken from different parts on the lake for analysis. This was done during the wet and dry seasons in 2012 and 2013. The results showed a general lower concentration of these parameters in the wet season and a higher concentration in the dry season. The statistical results also indicated a negative correlation between Total Nitrogen and Total Phosphorus (r = -0.839, p = 0.075), Total Nitrogen and Total Dissolved Solid (r = -0.771, p = 0.125), Total Nitrogen and Dissolved Oxygen (r = -0.749, p = 0.145) and Total Nitrogen and pH (r = -0.754, p = 0.141). However, Total Phosphorus showed a positive correlation with Total Dissolved Solid (r = 0.670, p = 0.216), Dissolved Oxygen (r = 0.830, p = 0.085), pH (r = 0.546, p = 0.314) and Temperature (r = 0.427, p = 474). The nutrient load on the lake water though low, it has the potential to increase the eutrophication of the lake if not controlled and this will be dangerous for ecological entities within the catchment. The association between TP and TDS should be closely monitored since there was a strong positive correlation between them. The major setback of this study was unavailability of the facilities to analyse colour, turbidity, faecal coliform, Escherichia coli count, chlorophyll-a, and algal growth in the lake.