scholarly journals Diurnal vertical migration of some cladocerans in relation to the physico-chemical factors in a fish pond

1970 ◽  
Vol 20 (2) ◽  
pp. 147-154 ◽  
Author(s):  
AS Bhuiyan ◽  
S Akhter ◽  
MMA Quddus
Keyword(s):  
Key Words ◽  
Vertical Migration ◽  
Fish Pond ◽  
Chemical Parameters ◽  
Surface Layers ◽  
Diurnal Vertical Migration ◽  
Physico Chemical ◽  
Chemical Factors ◽  
Diurnal Movement ◽  
The Relationship

Diurnal vertical migration of four genera of cladocerans, namely Diaphanosoma sp., Daphnia sp., Moina sp. and Bosmina sp., during March to December, 2007 showed that the number of Diaphanosoma sp. was 501 units/1 in the surface layers, 172 units/l in the middle layers and 190 units/l in the bottom layers. The yearly number of Daphnia sp. in surface, middle and bottom layerss was 362 units/l, 46 units/l and 189 units/l respectively. In surface, bottom and middle layers, the number of Moina sp. was 159, 71 and 32 units/l, respectively. Bosmina sp. was 78 units/l in surface, 31 units/l in the middle and 33 units/l in the bottom layers. The number of Diaphanosoma sp., Daphnia sp., Moina sp., Bosmina sp., were 455, 149, 259 and 358 units/l, respectively in the morning, 63, 176, 142, 43 units/l at noon and 107, 55, 28, 59 units/l, respectively in the evening. Throughout the study period the cladocerans were always abundant near the surface during morning and evening. Among the factors responsible for the diurnal movement of cadoceran, light played the most important factor. The relationship between the physico-chemical factors and the cladoceran occurrence in the pond was also explored. Key words: Cladocera; Diurnal migration; Physico-chemical parameters; Fish pond DOI: http://dx.doi.org/10.3329/dujbs.v20i2.8975 DUJBS 2011; 20(2): 147-154

scholarly journals Occurence and Abundance of some Copepods in a Fish Pond in Rajshahi, Bangladesh in relation to the Physico-Chemical Conditions

1970 ◽  
Vol 16 ◽  
pp. 115-119
Author(s):  
Abdus Salam Bhuiyan ◽  
MT Islam ◽  
R Sharmeen
Keyword(s):  
Key Words ◽  
Seasonal Succession ◽  
Fish Pond ◽  
University Campus ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Chemical Conditions

An investigation was carried out to find out the occurrence and abundance of copepods in relation to physico-chemical parameters in a fish pond within the Rajshahi University Campus, Rajshahi, Bangladesh from December, 2006 to September, 2007. A total of 5 genera of copepods of which 2 species belong to Cyclops were identified. Highest density of copepods (768 units/l) was observed in May 2007. Seasonal succession of copepods showed the most abundance in spring, followed by winter, summer and autumn. Correlationship between different physico-chemical parameters and copepods were also analyzed. Key words: Copepod occurrence, physico-chemical parameters, fish pond.   DOI:10.3329/jbs.v16i0.3752 J. bio-sci. 16: 115-119, 2008

scholarly journals Studies on some Physico-Chemical Parameters of Cyanophycean Members and Correlation Coefficient of Eutrophic Ponds in Chidambaram, Tamil Nadu, India

2014 ◽  
Vol 16 ◽  
pp. 145-156 ◽  
Author(s):  
B. Elayaraj ◽  
M. Selvaraju
Keyword(s):  
Statistical Analysis ◽  
Correlation Coefficient ◽  
Tamil Nadu ◽  
Pond Water ◽  
Chemical Parameters ◽  
Correlation Studies ◽  
Physico Chemical ◽  
Coefficient Corrélation ◽  
The Relationship

The present study deals with the statistical analysis of physico-chemical parameters and cyanophycean members of two pond water quality of Chidambaram, Cuddalore district (Tamil Nadu). The qualities of pond water were analyzed for six months. Eleven important parameters were included in statistical analysis. The qualities of pond water have been assessed by calculating mean, standard deviation and correlation coefficient. Correlation studies of hydrobiology with physico-chemical parameters revealed that the relationship between phytoplankton density in general and that of the specific groups are highly complex and often controlled by interactions of different factors. In the both pond water the correlation coefficient test revealed that cyanophycean members positively correlated with temperature, pH, CO2, alkalinity, hardness, nitrate, BOD and COD at 1 % and 5 % level significant, where as it is negatively correlated with acidity and dissolved oxygen. In the present study it can be concluded that the cyanophycean members are highly tolerant organisms. They prefer to grow at higher temperatures and in highly alkaline, BOD and COD waters. Hence they can with stand high levels of contaminated waters of Thillai Kali Kovil pond, when compared to Ilamiyakkinar Kovil pond.

scholarly journals Distribution and Diversity of Macrophytes in Relation to Some Physico-Chemical Factors in the Ketar River, Ziway Catchment, Ethiopia

2021 ◽  
Author(s):  
Yadesa Chibsa ◽  
Seyoum Mengistou ◽  
Demeke Kifle
Keyword(s):  
Relative Frequency ◽  
Nutrient Loading ◽  
Anthropogenic Activities ◽  
Pistia Stratiotes ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Significant Difference ◽  
Chemical Factors ◽  
Floating Macrophytes ◽  
Favorable Conditions

Abstract Distribution and diversity of macrophytes in relation to some physico-chemical factors in the Ketar River were studied from December, 2017 to November, 2018. Physico-chemical parameters and macrophytes were collected from three stations along the river for eight months. Onsite measurements and laboratory work of physico-chemical was analyzed as recommended by APHA [31]. Macrophytes were collected manually using belt transect method. Except for pH and surface water temperatures, all the physico-chemical parameters measured showed no significant difference spatially. During the study period, sixteen macrophyte species belonged to fourteen families were identified. Among the identified macrophyte, 11 of them were emergent, while 3 were rooted with floating leaves and 2 free-floating. Free-floating macrophytes were shared the highest abundance followed by emergent. This research observed that the site (site 3) that was exposed to minimal human impact was rich in diversity and abundance of macrophytes. All the sites were dominated by emergent macrophytes that attained the highest relative frequency followed by rooted emergent species. Azolla nilotica and Pistia stratiotes were shared the highest abundance and were the dominant macrophyte with the relative frequency of 7.24% and density of 40.91%, and 7.93% and 26.54%, respectively. Under a favorable environment, nutrient loading from nearby creates more favorable conditions for the infestation of the invasive species (A. nilotica and P. stratiotes) to flourish and out-compete the other species of macrophyte. Therefore, anthropogenic activities that enhance nutrient addition to the River should be regulated.

scholarly journals Physico-chemical parameters and primary productivity of a fish pond of Madhumara, Biratnagar

2013 ◽  
Vol 3 (1) ◽  
pp. 38-44
Author(s):  
Purna Bahadur Chhetri ◽  
Damodar Thapa Chhetry
Keyword(s):  
Primary Productivity ◽  
Net Primary Productivity ◽  
Winter Season ◽  
Summer Season ◽  
Fish Pond ◽  
Community Respiration ◽  
Total Hardness ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Free Carbon Dioxide

The physico-chemical parameters and primary productivity of a fish pond of Madhumara, Biratnagar was studied from October 2007 to September 2008. The maximum air and water temperature and water transparency were recorded in rainy season, whereas maximum pH, dissolved oxygen and chloride were recorded in winter season.  Free carbon dioxide and total hardness were maximum in summer season. The gross primary productivity, net primary productivity and community respiration were found maximum in winter season.

scholarly journals Mycological and physico-chemical study of a fish pond in Paniyala in Haridwar district of Uttarakhand

2013 ◽  
Vol 14 (3) ◽  
pp. 79-83
Author(s):  
D.R. Khanna ◽  
Rajni Rana ◽  
Fouzia Ishaq
Keyword(s):  
Dissolved Oxygen ◽  
Aspergillus Flavus ◽  
Oxygen Demand ◽  
Chemical Study ◽  
Fungal Species ◽  
Fish Pond ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Minimum Number ◽  
Calcium And Magnesium

Water is essential to life, but many people do not have access to clean and safe drinking water and many die of waterborne microbial infections. Mycological studies and physico-chemical parameters are an important criterion for evaluating the suitability of water for various purposes. In this study, we tried to assess the fungal species richness and physico-chemical status of fish pond in Paniyala in Haridwar district of Uttarakhand to predict the state of this pond. A total of four species were recorded which include Aspergillus flavus, Candida albicans, Penicillium Spp. and Fusarium Spp. Present study revealed that among fungal species, Aspergillus flavus was reported with higher in number 7.44±3.45 (ml-1x103) and Fusarium Spp.was recorded with minimum number of 5.15±2.06 (ml-1x103). The total species diversity was higher in the month of April (39.80 ml1x103. The water samples were also analyzed for physico-chemical parameters like temperature, pH, conductivity, DO, BOD, Free CO2, calcium and magnesium.  Higher value of temperature, pH, BOD, Free CO2 and lower values of dissolved oxygen concentration were recorded and the results revealed deteriorated water quality. The fungal population showed positive significant correlation with physico-chemical parameters like, temperature, pH, biological oxygen demand, calcium and magnesium whereas negatively correlated with conductivity and dissolved oxygen.

Physico-Chemical Properties of the Fish Pond Water in CMU, Bukidnon, Philippines

2019 ◽  
Vol 23 (2) ◽  
Author(s):  
Gloria Jesusa Baltazar ◽  
Keyword(s):  
Chemical Properties ◽  
Pond Water ◽  
Fish Pond ◽  
Chemical Parameters ◽  
Physico Chemical

fish pond, physico-chemical parameters, CMU

Spatial and seasonal variations in physico-chemical parameters of the Imo River Estuary, Niger Delta, Nigeria

2020 ◽  
Vol 35 (1) ◽  
pp. 29-38
Author(s):  
L. E. Obuba ◽  
A.A. Nlewadim ◽  
A. Uka
Keyword(s):  
Water Quality ◽  
Coastal Wetlands ◽  
River Estuary ◽  
Oxygen Demand ◽  
Principal Component ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Chemical Factors ◽  
Analysis Of Results

Variations in the water quality of the Imo River estuary was investigated by measuring values of selected physico-chemical parameters. Samples were collected bi-monthly between April 2015 and March 2016, covering the dry and wet seasons of the year. Three stations were selected: upstream (Kalibiama), midstream (Opobo) and downstream (Queenstown). Analysis of results showed that physico-chemical parameters were affected more on seasonal than spatial scale. Principal component analysis carried out indicated that values of most of the parameters recorded within the stations clustered together. On the other hand, dispersed values were recorded in months and seasons with significant variations at (p≤0.05) among most parameters. The high spatial variations in phosphates, suspended solids and lead could be associated to human activities like laundry and waste disposal within Opobo and Kalibiama stations. While, high seasonal variability in most parameters could be associated with intense sunshine, cloud cover and tidal intrusion/dilution due to runoff. It can be concluded that nutrient fluxes due to nitrogenous fertilizers are not a problem within the estuary. However, chemical factors and biodegradable components which cause fluctuations in biological oxygen demand are more of the challenge. Keywords: Land-use, nutrient flux, water-quality, pollution, coastal wetlands.

Relationship between biological activity of phenols and their physico-chemical parameters

1986 ◽  
Vol 51 (1) ◽  
pp. 241-248 ◽  
Author(s):  
Miroslav Polster ◽  
Bohuslav Rittich ◽  
Renata Žaludová
Keyword(s):  
Biological Activity ◽  
Biological Activities ◽  
Individual Factors ◽  
Chemical Parameters ◽  
Substituted Phenols ◽  
Structure Activity ◽  
Physico Chemical ◽  
Steric Factors ◽  
Quantitative Structure Activity Relationships ◽  
The Relationship

The present work deals with the relationship between biological activities of differently substituted phenols and their physico-chemical parameters expressing the influence of hydrophobic, electronic and steric factors. The testing was performed with the fungi Trychophyton gypseum and Trychophyton gypseum var. Kaufman-Wolf and the yeast Candida albicans. Significant relationship between biological activity and pKA values was calculated. The interactions between individual factors as well as the influence of the position of substituents on quantitative structure-activity relationships are discussed.

scholarly journals Anopheles breeding in relation to aquatic vegetation and certain physico-chemical parameters in rice fields of Purnia district

2013 ◽  
Vol 14 (1&2) ◽  
pp. 121-125
Author(s):  
B. N. Pandey ◽  
Ranjana Kumari
Keyword(s):  
Aquatic Vegetation ◽  
Control Program ◽  
Larval Survival ◽  
Rice Fields ◽  
Chemical Parameters ◽  
Blue Green Algae ◽  
Physico Chemical ◽  
Vector Control Program ◽  
Mosquito Breeding ◽  
Chemical Factors

Anopheles breeding in relation to aquatic vegetation and certain physico-chemical parameters was studied in rice fields of Purnia district. Association of larvae with different types of aquatic vegetation in different proportions was observed. Maximum Anopheles larvae were found associated with green and blue green algae. It indicates that algae encountered mosquito breeding by providing food and shelter followed by Ipomea, Hydrilla and water hyacinth. Among physico-chemical parameters pH, temperature, turbidity, electrical conductivity, DO, nitrate, carbonate and phosphate showed positive correlation while chloride and bicarbonate showed negative correlation. It can be concluded that aquatic vegetation usually growing in rice fields influences Anopheles breeding and their abundance varies with the occurrence and intensity of each aquatic plant. Physico-chemical factors also exert impact on larval survival and emergence. Thus, such factors should be considered when designing an integrated vector control program. However, a detailed study on the role of other interrelated factors such as predator-parasitie relationship, cultivation practices, emergence rate etc is needed for full understanding of the subject. Although the specific soil type was not analyzed in this survey, other reports indicated that there is variation in development of Anopheles larva among the different soil types

Variability of enzymatic activity in forest Cambisols and Brunic Arenosols of Polish lowland areas

2013 ◽  
Vol 64 (2) ◽  
pp. 54-59 ◽  
Author(s):  
Ewa Błońska ◽  
Jarosław Lasota ◽  
Kazimierz Januszek
Keyword(s):  
Enzymatic Activity ◽  
National Parks ◽  
Chemical Properties ◽  
Soil Surface ◽  
Surface Layers ◽  
Physico Chemical ◽  
Lowland Area ◽  
The Relationship ◽  
Properties Of Soil ◽  
Humus Horizons

Abstract The aim of this study was to determine the enzymatic activity (dehydrogenase and urease) in trophically diverse Brunic Arenosols and Cambisols. Efforts to establish the relationship between enzymatic activity and physico-chemical properties of various subtypes of Brunic Arenosols and Cambisols were attempted. Another aim was to determine the effect of vegetation on the properties of soil surface levels. The study was conducted on 94 plots located in nature reserves and national parks in the Polish lowland area. Dehydrogenase activity and urease showed large variations in the subtypes of the distinguished Brunic Arenosols and Cambisols. Dehydrogenases and urease activity in surface layers of fresh humus of Cambisols and Brunic Arenosols was strongly associated with the plants. This is confirmed by the relationship between the enzymatic activity and the type of accumulated humus substances, the ratio of carbon to nitrogen and humus horizons reaction.

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