Pub Date : 2017-06-01DOI: 10.12983/IJSRES-2017-P0052-0062
P. Bhangaonkar, J. Patel
Environmental flow is essential for restoring ecological health of a river. Reviewing water quality is integral determinant for exploring Environmental Flow Requirements (EFR) of any river. Vishwamitri is a seasonal river, affected by various Point Sources (PS) and Non-point Sources (NPS) of pollution. This study projects the assessment of various general physico-chemical parameters, heavy metals and biological parameters for water samples collected from various seven sampling stations along the Vishwamitri River. From the analysis it is observed that both BOD and COD values are found more whereas DO values are found less than the desirable limit in downstream water of Vishwamitri in all seasons. The colour of water is mostly observed changing from colourless to slight yellow at downstream stretch of the river in both the premonsoon and monsoon seasons. River near Kalaghoda Bridge in Vadodara City has represented odorous water quality in all seasons. At most of the sampling locations, total coliforms counts were exceeding the limits of standard of class „C‟ during pre-monsoon and monsoon seasons. In monsoon and post-monsoon seasons, most of the sampling stations represented considerably less counts of fecal coliforms. The values of iron and zinc were also observed higher than desirable limit at few sampling stations. Slight changes in the water quality of the river water were observed due to dilution and variation in flow conditions during the monsoon and post-monsoon period. Continuous monitoring of water quality of Vishwamitri and implementation of action plans to control pollution of river is an urgent need.
{"title":"Assessment of Water Quality of Vishwamitri River to Explore Environmental Flow Requirements","authors":"P. Bhangaonkar, J. Patel","doi":"10.12983/IJSRES-2017-P0052-0062","DOIUrl":"https://doi.org/10.12983/IJSRES-2017-P0052-0062","url":null,"abstract":"Environmental flow is essential for restoring ecological health of a river. Reviewing water quality is integral determinant for exploring Environmental Flow Requirements (EFR) of any river. Vishwamitri is a seasonal river, affected by various Point Sources (PS) and Non-point Sources (NPS) of pollution. This study projects the assessment of various general physico-chemical parameters, heavy metals and biological parameters for water samples collected from various seven sampling stations along the Vishwamitri River. From the analysis it is observed that both BOD and COD values are found more whereas DO values are found less than the desirable limit in downstream water of Vishwamitri in all seasons. The colour of water is mostly observed changing from colourless to slight yellow at downstream stretch of the river in both the premonsoon and monsoon seasons. River near Kalaghoda Bridge in Vadodara City has represented odorous water quality in all seasons. At most of the sampling locations, total coliforms counts were exceeding the limits of standard of class „C‟ during pre-monsoon and monsoon seasons. In monsoon and post-monsoon seasons, most of the sampling stations represented considerably less counts of fecal coliforms. The values of iron and zinc were also observed higher than desirable limit at few sampling stations. Slight changes in the water quality of the river water were observed due to dilution and variation in flow conditions during the monsoon and post-monsoon period. Continuous monitoring of water quality of Vishwamitri and implementation of action plans to control pollution of river is an urgent need.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"47 1","pages":"52-62"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88265006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.12983/IJSRES-2017-P0063-0070
Shampa Dutta, J. Datta, N. Mandal
Judicious application of chemical fertilizers can significantly enhance the biochemical constituents of agriculturally important crop plants. Present study deals with the effect of indigenous input with reduced dose of chemical fertilizer towards biochemical contents of mustard leaf; a field experiment was conducted in a randomized complete block design (RCBD) pattern with three replications during two consecutive winter seasons of 2011-2012 and 2012-2013 under old alluvial soil zone of Burdwan, West Bengal, India. Pseudomonas putida, Burkholderia cepacia, Burkholderia sp. and their mixture were used as indigenous biofertilizer for mustard cultivation. Results revealed that indigenous inoculation (with reduced dose of chemical fertilizer) significantly increased (p<0.05) the biochemical contents (chlorophyll, carotenoids, carbohydrate and protein) of mustard leaf as compared to uninoculated control (full recommended dose of NPK fertilizers). The comprehensive approach of plant growth promoting rhizobacteria (PGPR) in agriculturally important crops should be carried out to explore the hidden potential of PGPR and to promote the quality and yield of crop under field conditions.
{"title":"Evaluation of Indigenous Rhizobacterial Strains With Reduced Dose of Chemical Fertilizer towards Biochemical Constituents of Mustard Leaf (Brassica Campestris)","authors":"Shampa Dutta, J. Datta, N. Mandal","doi":"10.12983/IJSRES-2017-P0063-0070","DOIUrl":"https://doi.org/10.12983/IJSRES-2017-P0063-0070","url":null,"abstract":"Judicious application of chemical fertilizers can significantly enhance the biochemical constituents of agriculturally important crop plants. Present study deals with the effect of indigenous input with reduced dose of chemical fertilizer towards biochemical contents of mustard leaf; a field experiment was conducted in a randomized complete block design (RCBD) pattern with three replications during two consecutive winter seasons of 2011-2012 and 2012-2013 under old alluvial soil zone of Burdwan, West Bengal, India. Pseudomonas putida, Burkholderia cepacia, Burkholderia sp. and their mixture were used as indigenous biofertilizer for mustard cultivation. Results revealed that indigenous inoculation (with reduced dose of chemical fertilizer) significantly increased (p<0.05) the biochemical contents (chlorophyll, carotenoids, carbohydrate and protein) of mustard leaf as compared to uninoculated control (full recommended dose of NPK fertilizers). The comprehensive approach of plant growth promoting rhizobacteria (PGPR) in agriculturally important crops should be carried out to explore the hidden potential of PGPR and to promote the quality and yield of crop under field conditions.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"11 1","pages":"63-70"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82374409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.12983/IJSRES-2017-P0082-0090
Wilbert A. Aureo, Marlito Bande
Different stages of succession occupy different composition of anurans species which can be useful in determining their specific habitat requirements and preferences. The study assessed anurans species composition and diversity along a successional gradient of an evergreen rainforest in Silago Southern Leyte Philippines. A line transect (100 m) was used in the study using opportunistic approach in the collection of anurans in the established transect line per site where this was done both in daytime and nighttime. Identification of anurans was done using field guides by comparing photos collected and morphometric measurements and with final confirmation from an expert. The results showed that anuran species and diversity were considerably higher in late successional stage compared to early successional stage and grassland. There were five species of frogs (i.e Platymantis guentheri, Platymantis corrugatus, Occidozyga laevis, Platymantis sp. and Staurois sp) inhabiting the late successional stage and were not found both in early successional stage and grassland area while Hylarana erethraea (an introduced and invasive species) was documented in both early successional stage and grassland area. Furthermore, the morphometric measurements indicated that frogs found in the late successional stage were bigger compared to the same frogs found in the early successional stage and grassland. Finally, a change in species composition was observed along the successional gradient where the number of species observed in late successional stage, early successional stage and grassland were S=7, S=4, and S=2, respectively.
{"title":"Anurans Species Diversity and Composition along the Successional Gradient of the Evergreen Rainforest in Silago, Southern Leyte, Philippines","authors":"Wilbert A. Aureo, Marlito Bande","doi":"10.12983/IJSRES-2017-P0082-0090","DOIUrl":"https://doi.org/10.12983/IJSRES-2017-P0082-0090","url":null,"abstract":"Different stages of succession occupy different composition of anurans species which can be useful in determining their specific habitat requirements and preferences. The study assessed anurans species composition and diversity along a successional gradient of an evergreen rainforest in Silago Southern Leyte Philippines. A line transect (100 m) was used in the study using opportunistic approach in the collection of anurans in the established transect line per site where this was done both in daytime and nighttime. Identification of anurans was done using field guides by comparing photos collected and morphometric measurements and with final confirmation from an expert. The results showed that anuran species and diversity were considerably higher in late successional stage compared to early successional stage and grassland. There were five species of frogs (i.e Platymantis guentheri, Platymantis corrugatus, Occidozyga laevis, Platymantis sp. and Staurois sp) inhabiting the late successional stage and were not found both in early successional stage and grassland area while Hylarana erethraea (an introduced and invasive species) was documented in both early successional stage and grassland area. Furthermore, the morphometric measurements indicated that frogs found in the late successional stage were bigger compared to the same frogs found in the early successional stage and grassland. Finally, a change in species composition was observed along the successional gradient where the number of species observed in late successional stage, early successional stage and grassland were S=7, S=4, and S=2, respectively.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"71 1","pages":"82-90"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85909386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.12983/IJSRES-2017-P0071-0081
K. Srikantha, R. Kapilan, Vasantharuba Seevaratnam
Important fungal species Aspergillus flavus has a worldwide attention for its industrial use and toxigenic potential. It is capable of producing diverse group of enzymes including lipase, xylanse, α amylase and naringinase. Naringinase is a biotechnologically important enzyme and has potential application in food and pharmaceutical industries. Naringinases that show better stability in acidic pH and low temperatures are highly preferred in food industries. This study was aimed to characterize and determine the kinetic properties of the crude naringinase enzyme produced by Aspergillus flavus isolated from Citrus maxima fruit. The crude naringinase enzyme from Aspergillus flavus was highly active at 45oC and it was very stable at 40oC and 45oC for at least 1 hour. Highest naringinase activity was obtained at pH 4.5 but the enzyme was stable at pH 4.0 for at least one hour. The enzyme showed zero order kinetics for 10 minutes. Vmax of the crude naringinase enzyme was 4.8076 μmol/min and the Michaelis constant by Lineweaver-Burk Plot for naringin was 4.347 g/L under the conditions. Addition of 2mM of Hg 2+ , Cu 2+ and Ba 2+ decreased the naringinase enzyme activity, while addition of 2mM Na + , Mn 2+ , Ca 2+ and Zn 2+ increased the enzyme activity. The crude naringinase from Aspergillus flavus possesses the appropriate characteristics to be used in various industrial and biochemical applications. Acidic nature and optimum low temperature of enzyme, facilitates debittering of acidic juice without adjusting the pH and might be used to maintain nutritional and organoleptic nature of the
{"title":"Kinetic Properties and Metal Ion Stability of the Extracellular Naringinase Produced By Aspergillus Flavus Isolated From Decaying Citrus Maxima Fruits","authors":"K. Srikantha, R. Kapilan, Vasantharuba Seevaratnam","doi":"10.12983/IJSRES-2017-P0071-0081","DOIUrl":"https://doi.org/10.12983/IJSRES-2017-P0071-0081","url":null,"abstract":"Important fungal species Aspergillus flavus has a worldwide attention for its industrial use and toxigenic potential. It is capable of producing diverse group of enzymes including lipase, xylanse, α amylase and naringinase. Naringinase is a biotechnologically important enzyme and has potential application in food and pharmaceutical industries. Naringinases that show better stability in acidic pH and low temperatures are highly preferred in food industries. This study was aimed to characterize and determine the kinetic properties of the crude naringinase enzyme produced by Aspergillus flavus isolated from Citrus maxima fruit. The crude naringinase enzyme from Aspergillus flavus was highly active at 45oC and it was very stable at 40oC and 45oC for at least 1 hour. Highest naringinase activity was obtained at pH 4.5 but the enzyme was stable at pH 4.0 for at least one hour. The enzyme showed zero order kinetics for 10 minutes. Vmax of the crude naringinase enzyme was 4.8076 μmol/min and the Michaelis constant by Lineweaver-Burk Plot for naringin was 4.347 g/L under the conditions. Addition of 2mM of Hg 2+ , Cu 2+ and Ba 2+ decreased the naringinase enzyme activity, while addition of 2mM Na + , Mn 2+ , Ca 2+ and Zn 2+ increased the enzyme activity. The crude naringinase from Aspergillus flavus possesses the appropriate characteristics to be used in various industrial and biochemical applications. Acidic nature and optimum low temperature of enzyme, facilitates debittering of acidic juice without adjusting the pH and might be used to maintain nutritional and organoleptic nature of the","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"61 1","pages":"71-81"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88137920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-01DOI: 10.12983/ijsres-2017-p0036-0041
L. Aribal, R. Marin, J. Paquit, Jescell A. Zanoria
The present study was aimed to investigate the occurrence of mycorrhiza in an inland ultramafic mountain ecosystem to determine if the extreme soil conditions associated with high concentrations of toxic heavy metals could deter their presence across various elevation gradients. Twelve (12) sampling plots distributed across the major elevation gradient were used in this study. Soil samples were collected at a depth of 30cm and were analyzed to determine the heavy metal content. The standard protocol in the separation of spores was followed. Spore identification was based on existing literatures. Results revealed four genera of arbuscular mycorrhiza fungi (AMF) which includes Glomus, Acaulospora, Scutellospora and Entrophospora. Among the four genera, Glomus was the most abundant and widespread comprising of 40 species while Acaulospora sp. and Entrophospora sp. were the least observed. Further, no significant correlation was observed between mycorrhizal spore count to nickel and chromium implying that these heavy metals did not significantly affect the occurrence and distribution of mycorrhiza. However, a similar pattern of decreasing spore count with increasing elevation was also observed in comparison to tropical mountain forest ecosystems with normal soil conditions.
{"title":"Abundance and Distribution of Arbuscular Mycorrhiza in the Ultramafic Soils of Mt. Kiamo in Bukidnon, Philippines","authors":"L. Aribal, R. Marin, J. Paquit, Jescell A. Zanoria","doi":"10.12983/ijsres-2017-p0036-0041","DOIUrl":"https://doi.org/10.12983/ijsres-2017-p0036-0041","url":null,"abstract":"The present study was aimed to investigate the occurrence of mycorrhiza in an inland ultramafic mountain ecosystem to determine if the extreme soil conditions associated with high concentrations of toxic heavy metals could deter their presence across various elevation gradients. Twelve (12) sampling plots distributed across the major elevation gradient were used in this study. Soil samples were collected at a depth of 30cm and were analyzed to determine the heavy metal content. The standard protocol in the separation of spores was followed. Spore identification was based on existing literatures. Results revealed four genera of arbuscular mycorrhiza fungi (AMF) which includes Glomus, Acaulospora, Scutellospora and Entrophospora. Among the four genera, Glomus was the most abundant and widespread comprising of 40 species while Acaulospora sp. and Entrophospora sp. were the least observed. Further, no significant correlation was observed between mycorrhizal spore count to nickel and chromium implying that these heavy metals did not significantly affect the occurrence and distribution of mycorrhiza. However, a similar pattern of decreasing spore count with increasing elevation was also observed in comparison to tropical mountain forest ecosystems with normal soil conditions.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"33 1","pages":"36-41"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72985930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-01DOI: 10.12983/IJSRES-2017-P0042-0046
D. I. Agwaranze, Alloysius Chibuike Ogodo, C. B. Nwaneri, Paul Agyo
Provision of portable drinking water is of public health concern especially in developing countries where this is unavailble. The bacteriological quality of well water in Wukari metropolis was examined. A total of fifteen samples, five from each of the three wards (Puje, Hospital and Avyi) in Wukari were analyzed for total bacteria load, total coliform and presence of bacteria species using standard microbiological techniques. The result showed that the total viable count of bacteria in all the samples ranged from 0.86×10 4 cfu/ml (W5A) to 3.04×10 4 cfu/ml (W14P). Total coliform ranged from 0.24×10 2 cfu/ml (W5A) to 1.84×10 2 cfu/ml (W13P). Bacteria isolated showed that Staphylococcus aureus was isolated from samples W1A, W2A, W3A, W4A, W8H, W9H, W12P and W13P, Pseudomonas species was present in W1A, W3A, W4A, W7H and W15P, Escherichia coli was isolated from W1A, W5A, W7H, W8H, W9H, W11P and W14P, Klebsiella species and Enterococcus species were isolated from W2A and W3A, W6H and W10H respectively. Salmonella species was present in W2A, W10H, W11P and W14P, Enterobacter species present in W5A, W13P and W15P while Proteus species was isolated from samples W6H, W7H, W8H, W12P and W15P. The occurrence of the organisms showed that Staphylococcus aureus was the highest (53.33%) followed by Escherichia coli (46.67%), Pseudomonas species and Proteus species (33.37%), Salmonella species (26.67%), Enterobacter species (20.00%) while Klebsiella species and Enterococcus species were the least with 13.33% occurrence respectively. The study has shown high level of bacterial contamination in all the samples. Hence, the need for well maintenance and hygienic practices by households to reduce the risk of disease outbreak from the organisms encountered in this study.
{"title":"Bacteriological Examination of Well Water in Wukari, Nigeria","authors":"D. I. Agwaranze, Alloysius Chibuike Ogodo, C. B. Nwaneri, Paul Agyo","doi":"10.12983/IJSRES-2017-P0042-0046","DOIUrl":"https://doi.org/10.12983/IJSRES-2017-P0042-0046","url":null,"abstract":"Provision of portable drinking water is of public health concern especially in developing countries where this is unavailble. The bacteriological quality of well water in Wukari metropolis was examined. A total of fifteen samples, five from each of the three wards (Puje, Hospital and Avyi) in Wukari were analyzed for total bacteria load, total coliform and presence of bacteria species using standard microbiological techniques. The result showed that the total viable count of bacteria in all the samples ranged from 0.86×10 4 cfu/ml (W5A) to 3.04×10 4 cfu/ml (W14P). Total coliform ranged from 0.24×10 2 cfu/ml (W5A) to 1.84×10 2 cfu/ml (W13P). Bacteria isolated showed that Staphylococcus aureus was isolated from samples W1A, W2A, W3A, W4A, W8H, W9H, W12P and W13P, Pseudomonas species was present in W1A, W3A, W4A, W7H and W15P, Escherichia coli was isolated from W1A, W5A, W7H, W8H, W9H, W11P and W14P, Klebsiella species and Enterococcus species were isolated from W2A and W3A, W6H and W10H respectively. Salmonella species was present in W2A, W10H, W11P and W14P, Enterobacter species present in W5A, W13P and W15P while Proteus species was isolated from samples W6H, W7H, W8H, W12P and W15P. The occurrence of the organisms showed that Staphylococcus aureus was the highest (53.33%) followed by Escherichia coli (46.67%), Pseudomonas species and Proteus species (33.37%), Salmonella species (26.67%), Enterobacter species (20.00%) while Klebsiella species and Enterococcus species were the least with 13.33% occurrence respectively. The study has shown high level of bacterial contamination in all the samples. Hence, the need for well maintenance and hygienic practices by households to reduce the risk of disease outbreak from the organisms encountered in this study.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"72 1","pages":"42-46"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84179988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-01DOI: 10.12983/IJSRES-2017-P0047-0051
Benzidane Chahrazed, Bouharati Saddek, F. Mohamed, Bouharati Khaoula
{"title":"Pesticides in Drinking Water and Public Health: Modeling Using Artificial Intelligence Techniques","authors":"Benzidane Chahrazed, Bouharati Saddek, F. Mohamed, Bouharati Khaoula","doi":"10.12983/IJSRES-2017-P0047-0051","DOIUrl":"https://doi.org/10.12983/IJSRES-2017-P0047-0051","url":null,"abstract":"","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"190 1","pages":"47-51"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74237726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-01DOI: 10.12983/ijsres-2017-p0028-0035
Subrata K. Das, N. C. Roy, M. A. Hossain
Understanding the biodiversity indices provide key information for the conservation and management of natural aquatic ecosystem. The present study was conducted in the Ratargul freshwater swamp forest of Bangladesh from April to October 2016 to assess the biodiversity status of indigenous fish species. A total 62 fish species comprising 28 threatened species were recorded. Cypriniformes (37.46%) was the most dominant order while Anguiliformes (0.026%) was in lest dominant. Among the identified fish species 19.98% was recorded as threatened following IUCN. The Mean Shannon-Wiener index, Margalef richness index, Pielou‟s evenness index and Simpson dominance index were counted as 3.690±0.191, 9.497± 1.314, 0.971±0.003 and 0.982±0.003, respectively. In case of similarity percentages analysis, the highest number of similar species was found during July to August and the lowest during April to October. It may be concluded that Ratargul swamp forest is enriched with fish biodiversity.
{"title":"Diversity of Indigenous Fish Species in Ratargul Freshwater Swamp Forest, Bangladesh","authors":"Subrata K. Das, N. C. Roy, M. A. Hossain","doi":"10.12983/ijsres-2017-p0028-0035","DOIUrl":"https://doi.org/10.12983/ijsres-2017-p0028-0035","url":null,"abstract":"Understanding the biodiversity indices provide key information for the conservation and management of natural aquatic ecosystem. The present study was conducted in the Ratargul freshwater swamp forest of Bangladesh from April to October 2016 to assess the biodiversity status of indigenous fish species. A total 62 fish species comprising 28 threatened species were recorded. Cypriniformes (37.46%) was the most dominant order while Anguiliformes (0.026%) was in lest dominant. Among the identified fish species 19.98% was recorded as threatened following IUCN. The Mean Shannon-Wiener index, Margalef richness index, Pielou‟s evenness index and Simpson dominance index were counted as 3.690±0.191, 9.497± 1.314, 0.971±0.003 and 0.982±0.003, respectively. In case of similarity percentages analysis, the highest number of similar species was found during July to August and the lowest during April to October. It may be concluded that Ratargul swamp forest is enriched with fish biodiversity.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"39 1","pages":"28-35"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89855322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-02-01DOI: 10.12983/IJSRES-2017-P0022-0027
M.G. Ahmed
{"title":"Degradation of Imidacloprid Insecticide in the Environment on Leaves Surface by Sunlight","authors":"M.G. Ahmed","doi":"10.12983/IJSRES-2017-P0022-0027","DOIUrl":"https://doi.org/10.12983/IJSRES-2017-P0022-0027","url":null,"abstract":"","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"1 1","pages":"22-27"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76495231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-02-01DOI: 10.12983/ijsres-2017-p0017-0021
Y. Takikawa, Y. Matsuda, T. Nonomura, K. Kakutani, S. Kusakari, H. Toyoda
Our primary concern of air pollution problem was a transboundary movement of air pollutants to Japan from the pollutant generating country because of geographic and meteorological reasons. An electrostatic air purification screen (EAPS) was devised to capture particulate matter (PM) in smoke, which can cause health problems. The EAPS consisted of three layers of insulated conductor wires (ICWs) and two voltage generators that supplied negative charges to the two outer ICW layers and a positive charge to the middle ICW layer. The ICWs generated an attractive force that captured fine particles in the smoke passing through the EAPS. The attractive force was directly proportional to the applied voltage. At ≥4.5 kV, the EAPS exerted sufficient force to capture all fine particles carried in an airflow of 3 m/s. Results showed that the electrostatic barrier that formed inside the EAPS was effective at capturing PM, allowing homes and working environments to remain PM-free and healthy, despite continuous PM exposure.
{"title":"Electrostatic Elimination of Fine Smoke Particles by a Newly Devised Air Purification Screen","authors":"Y. Takikawa, Y. Matsuda, T. Nonomura, K. Kakutani, S. Kusakari, H. Toyoda","doi":"10.12983/ijsres-2017-p0017-0021","DOIUrl":"https://doi.org/10.12983/ijsres-2017-p0017-0021","url":null,"abstract":"Our primary concern of air pollution problem was a transboundary movement of air pollutants to Japan from the pollutant generating country because of geographic and meteorological reasons. An electrostatic air purification screen (EAPS) was devised to capture particulate matter (PM) in smoke, which can cause health problems. The EAPS consisted of three layers of insulated conductor wires (ICWs) and two voltage generators that supplied negative charges to the two outer ICW layers and a positive charge to the middle ICW layer. The ICWs generated an attractive force that captured fine particles in the smoke passing through the EAPS. The attractive force was directly proportional to the applied voltage. At ≥4.5 kV, the EAPS exerted sufficient force to capture all fine particles carried in an airflow of 3 m/s. Results showed that the electrostatic barrier that formed inside the EAPS was effective at capturing PM, allowing homes and working environments to remain PM-free and healthy, despite continuous PM exposure.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"97 1","pages":"17-21"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85752369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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