J. C. Okolo, J. C. Igborgbor, E. Eze, G. Ogu, G. Jonah
Tomato remains one of the most nutritive edible berries but challenged by incessant attack and spoilage by fungi among others. The negative effects of synthetic preservatives have shifted attention to bio-preservatives. This study investigated the shelf-life of post-harvest tomato fruits treated with the two medicinal plants: Azadirachta indica (neem leaf) and Vernonia amygdalina (bitter leaf) extracts. Fresh tomato fruits and leaves of both plants were sourced from Lokoja. The leaves were air-dried, pulverized and extracted with distilled water and absolute ethanol. The extracts were analyzed phytochemically and graded concentrations (2.5 g/mL - 10.0 g/mL) were applied to the tomato samples in five replications each. Weight loss, appearance of fungal mycelia and deteriorations on the tomato samples were monitored for 30 days. Fungal isolates from the deteriorated samples were recovered and subjected to in vitro inhibitory activities. Alkaloids, glycosides, saponins, flavonoids and tannins were present in both extracts, except for A. indica, where saponins was not detected. Both extracts significantly (p<0.05) reduce the weight loss (63.4 %) and extended the shelf life of the tomato fruits to 24 days at 10.0 g/mL. Aspergillus niger, Fusarium oxysporum, Rhizopus stolonifer and Alternaria alternata were recovered from the spoilt tomatoes. The most and least susceptible isolates were R. stolonifera (84.56 %) and A. niger (71.45 %), respectively. The bioactivities of both extracts were not significantly different (p>0.05) from each other. These findings suggest that relatively higher concentrations of both plant extracts could be potential bio-preservatives to extend the shelf life of post-harvest tomatoes.
{"title":"The Shelf Life of Tomato Fruits (Solanum lycopersicum L.) Treated with Extracts of Two Medicinal Plants: Azadirachta indica and Vernonia amygdalina","authors":"J. C. Okolo, J. C. Igborgbor, E. Eze, G. Ogu, G. Jonah","doi":"10.3126/ije.v11i2.48653","DOIUrl":"https://doi.org/10.3126/ije.v11i2.48653","url":null,"abstract":"Tomato remains one of the most nutritive edible berries but challenged by incessant attack and spoilage by fungi among others. The negative effects of synthetic preservatives have shifted attention to bio-preservatives. This study investigated the shelf-life of post-harvest tomato fruits treated with the two medicinal plants: Azadirachta indica (neem leaf) and Vernonia amygdalina (bitter leaf) extracts. Fresh tomato fruits and leaves of both plants were sourced from Lokoja. The leaves were air-dried, pulverized and extracted with distilled water and absolute ethanol. The extracts were analyzed phytochemically and graded concentrations (2.5 g/mL - 10.0 g/mL) were applied to the tomato samples in five replications each. Weight loss, appearance of fungal mycelia and deteriorations on the tomato samples were monitored for 30 days. Fungal isolates from the deteriorated samples were recovered and subjected to in vitro inhibitory activities. Alkaloids, glycosides, saponins, flavonoids and tannins were present in both extracts, except for A. indica, where saponins was not detected. Both extracts significantly (p<0.05) reduce the weight loss (63.4 %) and extended the shelf life of the tomato fruits to 24 days at 10.0 g/mL. Aspergillus niger, Fusarium oxysporum, Rhizopus stolonifer and Alternaria alternata were recovered from the spoilt tomatoes. The most and least susceptible isolates were R. stolonifera (84.56 %) and A. niger (71.45 %), respectively. The bioactivities of both extracts were not significantly different (p>0.05) from each other. These findings suggest that relatively higher concentrations of both plant extracts could be potential bio-preservatives to extend the shelf life of post-harvest tomatoes.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":"68 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72574102","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}
L. Sagar, Jambay, Ngawang Gyeltshen, Bhakta Bdr. Ghalley, Sonam Yonten, Namkha Gyeltshen, Rupesh Subedi, R. Dorji
In Bhutan the Persian Walnut (Juglans regia L.) is highly valued for its timber and is listed under special class in Royalty on Forest Products of Bhutan. Possessing high timber and other medicinal values, the ecology of the species in the country was poorly understood. The study aimed to understand the ecological requirements and habitat modeling of the species in Bhutan. A purposive non-probability sampling was adopted in natural habitats of the species in four districts (Gasa, Punakha, Wangdue Phodrang, and Dagana) of the country. Plot size of 20 m X 20 m (major plot) for tree and understory and 2 m X 2 m for ground cover were used to collect vegetation data. Soil samples were collected from the center of the major plot at a depth of 25 - 30 cm. A total of 163 plant species belonging to 74 families were recorded from the study plots. Pearson and Kendal correlation of CCA Ordination showed moderate influence of slope (r = .66) followed by altitude (r =.55). Annual mean temperature and rainfall showed moderately negative correlation with the growth and distribution of J. regia (r =. -54 and -.64) in the study area. Despite, scattered distribution of J. regia in the country an area of 7146.53 km2 which accounts for 18.61% of the country’s total area was found to be suitable for the growth and development of the species which can be used for protection and management of species in future.
在不丹，波斯核桃(Juglans regia L.)因其木材而受到高度重视，在不丹森林产品皇室中被列为特殊类别。由于拥有很高的木材和其他药用价值，人们对该物种在该国的生态知之甚少。该研究旨在了解不丹物种的生态需求和栖息地模型。在全国4个区(加萨、普纳卡、旺度Phodrang和达加纳)的自然生境中采用了有目的的非概率抽样方法。树木和林下植被样地面积为20 m X 20 m(主样地)，地被植被样地面积为2 m X 2 m(主样地)。土壤样品采集于主样地中心25 ~ 30 cm深度处。研究样地共记录到74科163种植物。CCA排序的Pearson和Kendal相关性显示坡度对CCA排序的影响中等(r = 0.66)，其次是海拔(r = 0.55)。年平均气温和降雨量与王参的生长和分布呈中度负相关(r =。-54和- 0.64)。尽管如此，在7146.53 km2(占全国总面积的18.61%)的分布范围内，柽柳的生长发育十分适宜，可为今后的物种保护和管理提供参考。
{"title":"Ecology of Persian Walnut (Juglans regia L.) in Western Bhutan","authors":"L. Sagar, Jambay, Ngawang Gyeltshen, Bhakta Bdr. Ghalley, Sonam Yonten, Namkha Gyeltshen, Rupesh Subedi, R. Dorji","doi":"10.3126/ije.v11i2.43844","DOIUrl":"https://doi.org/10.3126/ije.v11i2.43844","url":null,"abstract":"In Bhutan the Persian Walnut (Juglans regia L.) is highly valued for its timber and is listed under special class in Royalty on Forest Products of Bhutan. Possessing high timber and other medicinal values, the ecology of the species in the country was poorly understood. The study aimed to understand the ecological requirements and habitat modeling of the species in Bhutan. A purposive non-probability sampling was adopted in natural habitats of the species in four districts (Gasa, Punakha, Wangdue Phodrang, and Dagana) of the country. Plot size of 20 m X 20 m (major plot) for tree and understory and 2 m X 2 m for ground cover were used to collect vegetation data. Soil samples were collected from the center of the major plot at a depth of 25 - 30 cm. A total of 163 plant species belonging to 74 families were recorded from the study plots. Pearson and Kendal correlation of CCA Ordination showed moderate influence of slope (r = .66) followed by altitude (r =.55). Annual mean temperature and rainfall showed moderately negative correlation with the growth and distribution of J. regia (r =. -54 and -.64) in the study area. Despite, scattered distribution of J. regia in the country an area of 7146.53 km2 which accounts for 18.61% of the country’s total area was found to be suitable for the growth and development of the species which can be used for protection and management of species in future.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":"8 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80713322","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}
Ecotourism promotes stewardship of natural and cultural resources. However, local people and tourists' opinions are necessary to promote ecotourism development. This study attempts to identify prospective ecotourism products and assess local and visitor perceptions towards ecotourism development in the Jagadishpur reservoir. We conducted semi-structured interviews with 50 local households, 65 visitors, and 7 key informants. We used Friedman's rank test to determine the preferences for ecotourism products, and Fisher's exact test to quantify locals and visitors' perceptions of ecotourism. The findings showed that lakes/scenic beauty, and bird watching are the highest rated ecotourism products by locals and visitors, respectively. Local people and visitors perceived picnic spots and view towers as additional ecotourism products for ecotourism development, respectively. The perceptions of locals and visitors showed no significant difference that the area is suitable for ecotourism, biodiversity conservation, and livelihood promotion of locals. However, a significant difference was found in the perception between locals and visitors of the culture and tradition. The study showed that local people and visitors both are positive for ecotourism development in terms of suitability, livelihood, and biodiversity conservation. Detailed understanding and prioritized ecotourism products can contribute to ecotourism promotion more effectively. Furthermore, more research on the feasibility of identified ecotourism products and the effectiveness of fund allocation for ecotourism products are urgently needed to develop wetland tourism in a sustainable way.
{"title":"Perception of local people and visitors towards ecotourism development in Jagadishpur reservoir","authors":"Bishal Aryal, V. Chhetri, Pramisha Khanal","doi":"10.3126/ije.v11i2.44768","DOIUrl":"https://doi.org/10.3126/ije.v11i2.44768","url":null,"abstract":"Ecotourism promotes stewardship of natural and cultural resources. However, local people and tourists' opinions are necessary to promote ecotourism development. This study attempts to identify prospective ecotourism products and assess local and visitor perceptions towards ecotourism development in the Jagadishpur reservoir. We conducted semi-structured interviews with 50 local households, 65 visitors, and 7 key informants. We used Friedman's rank test to determine the preferences for ecotourism products, and Fisher's exact test to quantify locals and visitors' perceptions of ecotourism. The findings showed that lakes/scenic beauty, and bird watching are the highest rated ecotourism products by locals and visitors, respectively. Local people and visitors perceived picnic spots and view towers as additional ecotourism products for ecotourism development, respectively. The perceptions of locals and visitors showed no significant difference that the area is suitable for ecotourism, biodiversity conservation, and livelihood promotion of locals. However, a significant difference was found in the perception between locals and visitors of the culture and tradition. The study showed that local people and visitors both are positive for ecotourism development in terms of suitability, livelihood, and biodiversity conservation. Detailed understanding and prioritized ecotourism products can contribute to ecotourism promotion more effectively. Furthermore, more research on the feasibility of identified ecotourism products and the effectiveness of fund allocation for ecotourism products are urgently needed to develop wetland tourism in a sustainable way.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":"194 2 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78325071","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}
T. Dema, Tshering Pem, Jambay, S. Tshomo, S. Tshering
Freshwater plants play a paramount role in an aquatic ecosystem. However, only limited studies have been carried out on freshwater plants. Therefore, the study aimed to assess the diversity of freshwater plants in different freshwater bodies of Punakha District, the correlation of freshwater plant species with the environmental variables, and the local community difference in freshwater plant use knowledge in Punakha district. A total of 20 water bodies were selected using a stratified sampling method. Area-based surveys were employed to assess the plant species from a total of 80 plots, each with the quadrat of 5 m x 5 m. Environmental variables such as altitude, water depth, water velocity, temperature, precipitation and evapotranspiration were measured. The study recorded a total of 72 freshwater plant species distributed among 57 genera and 37 families. Shannon-Weiner diversity index revealed high diversity of freshwater plants from ponds (H’ = 3.3) followed by ditches (H’ = 3.16), streams (H’ = 3.07) and lakes (H’ = 2.83). The study revealed the decrease of freshwater plant species with an increase in the water velocity, depth and altitude. There was a significant association between respondents’ freshwater plant use knowledge with gender (x2 (1) = 6.04, p = .014), age (x2 (1) = 13.21, p = .000) and education level (x2 (1) = 4.53, p = .003). Females and illiterate respondents with aged 31 years old and above had more knowledge on freshwater plant use compared to males and educated respondents with aged 30 years old and below.
淡水植物在水生生态系统中起着至关重要的作用。然而，对淡水植物的研究非常有限。因此，本研究旨在评估Punakha地区不同淡水水体中淡水植物的多样性、淡水植物种类与环境变量的相关性以及Punakha地区淡水植物利用知识的地方群落差异。采用分层抽样的方法，选取了20个水体。采用基于区域的调查方法对80个样地的植物种类进行了评估，每个样地的样方为5 m x 5 m。测量了海拔、水深、流速、温度、降水和蒸散等环境变量。本研究共记录到淡水植物72种，分布于37科57属。Shannon-Weiner多样性指数显示，池塘(H ' = 3.3)、沟渠(H ' = 3.16)、溪流(H ' = 3.07)和湖泊(H ' = 2.83)的淡水植物多样性较高。研究发现，淡水植物种类随着流速、深度和海拔的增加而减少。被调查者的淡水植物利用知识与性别(x2 (1) = 6.04, p = 0.014)、年龄(x2 (1) = 13.21, p = 0.000)和文化程度(x2 (1) = 4.53, p = 0.003)存在显著相关。31岁及以上的女性和文盲受访者对淡水植物使用的了解程度高于30岁及以下的男性和受过教育的受访者。
{"title":"Assessment of freshwater plant diversity and local difference in freshwater plant use knowledge in Punakha district, Bhutan","authors":"T. Dema, Tshering Pem, Jambay, S. Tshomo, S. Tshering","doi":"10.3126/ije.v11i2.47619","DOIUrl":"https://doi.org/10.3126/ije.v11i2.47619","url":null,"abstract":"Freshwater plants play a paramount role in an aquatic ecosystem. However, only limited studies have been carried out on freshwater plants. Therefore, the study aimed to assess the diversity of freshwater plants in different freshwater bodies of Punakha District, the correlation of freshwater plant species with the environmental variables, and the local community difference in freshwater plant use knowledge in Punakha district. A total of 20 water bodies were selected using a stratified sampling method. Area-based surveys were employed to assess the plant species from a total of 80 plots, each with the quadrat of 5 m x 5 m. Environmental variables such as altitude, water depth, water velocity, temperature, precipitation and evapotranspiration were measured. The study recorded a total of 72 freshwater plant species distributed among 57 genera and 37 families. Shannon-Weiner diversity index revealed high diversity of freshwater plants from ponds (H’ = 3.3) followed by ditches (H’ = 3.16), streams (H’ = 3.07) and lakes (H’ = 2.83). The study revealed the decrease of freshwater plant species with an increase in the water velocity, depth and altitude. There was a significant association between respondents’ freshwater plant use knowledge with gender (x2 (1) = 6.04, p = .014), age (x2 (1) = 13.21, p = .000) and education level (x2 (1) = 4.53, p = .003). Females and illiterate respondents with aged 31 years old and above had more knowledge on freshwater plant use compared to males and educated respondents with aged 30 years old and below.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":"23 5","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72593979","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}
Leopord Sibomana Leonard, Rubhera Ram Mato, M. Kaseva
Groundwater in unplanned settlements is stressed by multiple pollution sources threatening health of consumers. Elevated nitrogen and phosphorus affect the quality of groundwater as they leach through the soil to groundwater. This study aimed at establishing variations of nitrogenous and phosphorus compounds in 75 boreholes used in 8 unplanned settlements in Dar es Salaam, Tanzania. Laboratory analysis using Spectrophotometer DR/4000 was conducted at Ardhi University. Principal Component Analysis was conducted by using Paleontological Statistics (PAST) software, version 3.08 and statistical significance set at p < 0.05. Results indicated that about 84% and 73.3% of sampled boreholes during wet and dry seasons, respectively had nitrate nitrogen greater than WHO recommendations for drinking water quality standards. Concentration of NO2-N showed that 12% and 14.7% of sampled boreholes during wet and dry seasons, respectively were greater than 0.9 mg/L TZS (574:2016) recommended guidelines. Phosphate concentration was greater than 2.2 mg/L TZS (574:2016) recommended guidelines in 49.3% and 12% of sampled boreholes during both wet and dry seasons, respectively. These results indicated that consuming such polluted water may be unsafe to infants and older people and therefore alternative drinking water source is recommended.
{"title":"Occurrence of Elevated Nitrogenous and Phosphorus in Groundwater Sources Used in Unplanned Settlements, Dar Es Salaam - Tanzania","authors":"Leopord Sibomana Leonard, Rubhera Ram Mato, M. Kaseva","doi":"10.3126/ije.v11i2.46304","DOIUrl":"https://doi.org/10.3126/ije.v11i2.46304","url":null,"abstract":"Groundwater in unplanned settlements is stressed by multiple pollution sources threatening health of consumers. Elevated nitrogen and phosphorus affect the quality of groundwater as they leach through the soil to groundwater. This study aimed at establishing variations of nitrogenous and phosphorus compounds in 75 boreholes used in 8 unplanned settlements in Dar es Salaam, Tanzania. Laboratory analysis using Spectrophotometer DR/4000 was conducted at Ardhi University. Principal Component Analysis was conducted by using Paleontological Statistics (PAST) software, version 3.08 and statistical significance set at p < 0.05. Results indicated that about 84% and 73.3% of sampled boreholes during wet and dry seasons, respectively had nitrate nitrogen greater than WHO recommendations for drinking water quality standards. Concentration of NO2-N showed that 12% and 14.7% of sampled boreholes during wet and dry seasons, respectively were greater than 0.9 mg/L TZS (574:2016) recommended guidelines. Phosphate concentration was greater than 2.2 mg/L TZS (574:2016) recommended guidelines in 49.3% and 12% of sampled boreholes during both wet and dry seasons, respectively. These results indicated that consuming such polluted water may be unsafe to infants and older people and therefore alternative drinking water source is recommended.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76711551","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}
Satellite measurements are important for quantifying the ground observations and atmosphere columnar properties like Aerosol Optical Depth (AOD) especially in developing countries like India. In this study Moderate Resolution Imaging Spectroradiometer (MODIS) retrieval’s AOD product has been used having 3 km and 10 km spatial resolution from terra and aqua satellites, The MODIS AOD data and meteorological parameters from May 2017 to May 2019 were used. The Multiple linear regression method is implemented in this study. The study concluded that there is a good agreement in the prediction of PM2.5 at Zoopark location, whereas in other monitoring locations the agreement between AOD and measured PM2.5 is relatively poor. The particulate matter (PM) concentrations are influenced by the local source regions and the long-range transport of pollutant through the wind, whereas the source regions identified based on the Potential Source Contribution Function (PSCF), Concentration-Weighted Trajectory (CWT) and Cluster analysis indicate the dominant source regions. Results indicate that the Central India and East Indian regions are more dominating source regions at Hyderabad location in the winter season. It was found that the lower altitude layer showed the major source of local regions nearby receptor. The cluster analysis indicates that the high intensity from the East Indian regions. This paper not only demonstrates reasonable prediction accuracy but also provides the model uncertainties which lays foundation for further study.
{"title":"Estimation of surface PM2.5 with MODIS Aerosol optical depth and source identification using trajectory analysis: A case of Hyderabad City, India","authors":"Selvetikar Ashok, M. Sekhar, D. R. B. Reddy","doi":"10.3126/ije.v11i2.44538","DOIUrl":"https://doi.org/10.3126/ije.v11i2.44538","url":null,"abstract":"Satellite measurements are important for quantifying the ground observations and atmosphere columnar properties like Aerosol Optical Depth (AOD) especially in developing countries like India. In this study Moderate Resolution Imaging Spectroradiometer (MODIS) retrieval’s AOD product has been used having 3 km and 10 km spatial resolution from terra and aqua satellites, The MODIS AOD data and meteorological parameters from May 2017 to May 2019 were used. The Multiple linear regression method is implemented in this study. The study concluded that there is a good agreement in the prediction of PM2.5 at Zoopark location, whereas in other monitoring locations the agreement between AOD and measured PM2.5 is relatively poor. The particulate matter (PM) concentrations are influenced by the local source regions and the long-range transport of pollutant through the wind, whereas the source regions identified based on the Potential Source Contribution Function (PSCF), Concentration-Weighted Trajectory (CWT) and Cluster analysis indicate the dominant source regions. Results indicate that the Central India and East Indian regions are more dominating source regions at Hyderabad location in the winter season. It was found that the lower altitude layer showed the major source of local regions nearby receptor. The cluster analysis indicates that the high intensity from the East Indian regions. This paper not only demonstrates reasonable prediction accuracy but also provides the model uncertainties which lays foundation for further study.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":"34 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85520529","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}
Christophe Niyungeko, Jonas Ntirampeba, P. Bararunyeretse, Benjamin Makimilua Tiimub, M. Nihorimbere, Pierre Ntakiyiruta
Poor water quality is problematic for the health of public swimmers. This study focused on the water quality of three main swimming pools coded as MS, ES and HC in the city of Bujumbura, Burundi. Water samples were collected from June to the end of August 2020 and analyzed for physicochemical parameters such as pH, turbidity, conductivity, nitrates, free chlorine and microbiological parameters (total coliforms and faecal coliforms). Our results indicated that 2/3 of the sampling days showed pH >7.8 and pH<7.2 in the MS and HC pools, respectively. All these pools exhibited high turbidity whereas ES manifested very high value (6.05NTU). Free chlorine appeared very low in the MS pool with contamination by total coliforms (<1MPN 1mL-1 and 1.17x107MPN 1mL-1, <1MPN 1mL-1 and 6.32x106MPN 1mL-1, and < 1MPN 1mL-1 and 5x102 MPN 1mL-1) for MS, ES, and HC respectively. Both MS and ES pools revealed higher thermotolerant coliforms contamination of (<1MPN 1mL-1 and 2.18x104MPN 1mL-1) in MS and (<1MPN 1mL-1 and 2.32x104MPN 1mL-1) in ES, but the HC pool showed a single contamination case with values of <1UFC 1mL-1 and 5UFC1mL-1 throughout the sampling period. Additionally, extreme concentrations of nitrates (104.89 mgL-1) were observed at the ES pool. The findings showed a non-compliance with WHO standards for all three swimming pools and therefore advocates for an urgent need to monitor and treat or change the water frequently for quality assurance of swimming pools.
{"title":"Evaluation of the status of water quality of three swimming pools in Bujumbura city, Burundi","authors":"Christophe Niyungeko, Jonas Ntirampeba, P. Bararunyeretse, Benjamin Makimilua Tiimub, M. Nihorimbere, Pierre Ntakiyiruta","doi":"10.3126/ije.v11i2.44652","DOIUrl":"https://doi.org/10.3126/ije.v11i2.44652","url":null,"abstract":"Poor water quality is problematic for the health of public swimmers. This study focused on the water quality of three main swimming pools coded as MS, ES and HC in the city of Bujumbura, Burundi. Water samples were collected from June to the end of August 2020 and analyzed for physicochemical parameters such as pH, turbidity, conductivity, nitrates, free chlorine and microbiological parameters (total coliforms and faecal coliforms). Our results indicated that 2/3 of the sampling days showed pH >7.8 and pH<7.2 in the MS and HC pools, respectively. All these pools exhibited high turbidity whereas ES manifested very high value (6.05NTU). Free chlorine appeared very low in the MS pool with contamination by total coliforms (<1MPN 1mL-1 and 1.17x107MPN 1mL-1, <1MPN 1mL-1 and 6.32x106MPN 1mL-1, and < 1MPN 1mL-1 and 5x102 MPN 1mL-1) for MS, ES, and HC respectively. Both MS and ES pools revealed higher thermotolerant coliforms contamination of (<1MPN 1mL-1 and 2.18x104MPN 1mL-1) in MS and (<1MPN 1mL-1 and 2.32x104MPN 1mL-1) in ES, but the HC pool showed a single contamination case with values of <1UFC 1mL-1 and 5UFC1mL-1 throughout the sampling period. Additionally, extreme concentrations of nitrates (104.89 mgL-1) were observed at the ES pool. The findings showed a non-compliance with WHO standards for all three swimming pools and therefore advocates for an urgent need to monitor and treat or change the water frequently for quality assurance of swimming pools.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":"11 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78894169","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}
Purpose –– This study examines the vital role manufacturing industries can play in the realization of Sustainable Development Goals (SDG) by adopting sustainability that encompasses economic viability, environmental protection, and social equity. Among such industries is the clothing and textile industry, which supplies one of the basic human needs. The textile industry has a strong potential to increase Gross Domestic Product (GDP) and promote foreign direct investment (FDI). Methods –– The study employed a review approach for its methodology. Secondary data from textile firms, books, and journals were used as sources of information. Findings –– The study revealed that there was a poor track record for social and environmental concerns in textile production among developing countries. The cost of acquiring technology and the threat to indigenous firms were inhibiting factors. The use of obsolete technologies, lack of sustainability principles and policies, and little effort in technology transfer were other factors. Conclusion/Recommendation –– The study recommends that developing countries should adopt a sustainability policy in textile manufacturing by employing technology transfer from developed countries through exchanges and collaborations.
{"title":"Adoption of Sustainability in Clothing and Textile Production Among Developing Countries","authors":"I. Diyaolu","doi":"10.55921/iijv6461","DOIUrl":"https://doi.org/10.55921/iijv6461","url":null,"abstract":"Purpose –– This study examines the vital role manufacturing industries can play in the realization of Sustainable Development Goals (SDG) by adopting sustainability that encompasses economic viability, environmental protection, and social equity. Among such industries is the clothing and textile industry, which supplies one of the basic human needs. The textile industry has a strong potential to increase Gross Domestic Product (GDP) and promote foreign direct investment (FDI).\u0000\u0000Methods –– The study employed a review approach for its methodology. Secondary data from textile firms, books, and journals were used as sources of information.\u0000\u0000Findings –– The study revealed that there was a poor track record for social and environmental concerns in textile production among developing countries. The cost of acquiring technology and the threat to indigenous firms were inhibiting factors. The use of obsolete technologies, lack of sustainability principles and policies, and little effort in technology transfer were other factors.\u0000\u0000Conclusion/Recommendation –– The study recommends that developing countries should adopt a sustainability policy in textile manufacturing by employing technology transfer from developed countries through exchanges and collaborations.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":"32 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84747785","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}
Changes in land use are an important issue in many farms that affect soil biological, chemical, and physical properties temporarily under cropping cycles or when the land is permanently allocated to perennial tree crops, e.g., in agroforestry. This study investigated the changes in sandy soil chemistry induced by three perennial tree crops (rubber, cocoa, and oil palm) growing in 30-year-old unmanaged and abandoned plantations and the surrounding grasslands dominated by cogon grass. A disruptive approach was used to collect soil samples from the top 60 cm under all the tree crops and in the grassland soils. A 500-gram sample of each soil originating from under each tree crop and the grassland were carefully packed into pre-labeled paper bags in triplicate (n=3) and sent to the laboratory for analysis of a selected number of primary and secondary macronutrients, micronutrients, and other soil parameters. The results showed N, K, Mg, Cu, Zn, and S were generally deficient in the sandy soil. A tree crop-specific soil organic matter, organic carbon, carbon stock contents, and water holding capacity measured were high under rubber and cocoa only. The variation in pH, electrical conductivity, bulk density, total porosity, and particle composition were generally similar except that the sand composition was lower in the soils under rubber and oil palm.
{"title":"Nutrient dynamics under unmanaged rubber, cocoa, and oil palm plantations in a sandy soil under humid lowland tropical climatic conditions","authors":"Joel Koni, P. S. Michael","doi":"10.3126/ije.v11i1.45839","DOIUrl":"https://doi.org/10.3126/ije.v11i1.45839","url":null,"abstract":"Changes in land use are an important issue in many farms that affect soil biological, chemical, and physical properties temporarily under cropping cycles or when the land is permanently allocated to perennial tree crops, e.g., in agroforestry. This study investigated the changes in sandy soil chemistry induced by three perennial tree crops (rubber, cocoa, and oil palm) growing in 30-year-old unmanaged and abandoned plantations and the surrounding grasslands dominated by cogon grass. A disruptive approach was used to collect soil samples from the top 60 cm under all the tree crops and in the grassland soils. A 500-gram sample of each soil originating from under each tree crop and the grassland were carefully packed into pre-labeled paper bags in triplicate (n=3) and sent to the laboratory for analysis of a selected number of primary and secondary macronutrients, micronutrients, and other soil parameters. The results showed N, K, Mg, Cu, Zn, and S were generally deficient in the sandy soil. A tree crop-specific soil organic matter, organic carbon, carbon stock contents, and water holding capacity measured were high under rubber and cocoa only. The variation in pH, electrical conductivity, bulk density, total porosity, and particle composition were generally similar except that the sand composition was lower in the soils under rubber and oil palm.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":"64 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73738191","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}
Rainwater Harvesting Systems (RWHSs) are increasingly being used as an alternative or supplementary source of water to curb the water supply deficit in the Kathmandu valley. The harvested rainwater is primarily used for non-potable purposes like flushing toilets and irrigation, but the knowledge on the use of rainwater for potable purpose is remarkably sparse. This study assesses the suitability of rainwater in terms of quantity and quality in a public school that adopts Rooftop RWHS as the source of drinking water. In this study, we observed that the volume of rainwater being harvested is sufficient to address the current demand of drinking water, with a mean rainfall of 1664 mm on a catchment area of 372 m2. Storage capacity needs to be expanded if the demand increases. Physico-chemical and microbial analyses of water samples (before and after a series of treatments) were carried out for the winter, monsoon, and post-monsoon seasons. The values of physico-chemical parameters of the water samples, in all the seasons, were well within both the National Drinking Water Quality Standards (NDWQS, 2005) and the World Health Organisation (WHO, 2017) guidelines for drinking water, while fecal coliforms were detected in the storage tank, but were absent in tap water after the treatments. Based on the findings, we suggest that the harvested rainwater could be used for drinking purposes if properly treated. RWHS use at the institutional level, like in schools, on the one hand, curbs the increasing demand for water in water-deficit locations like Kathmandu, and on the other, encourages the adoption of such sustainable technologies for the water supply.
{"title":"Performance of rooftop rainwater harvesting system as a source of drinking water","authors":"Mamata Aryal, Prayon Joshi, S. Thakuri","doi":"10.3126/ije.v11i1.45841","DOIUrl":"https://doi.org/10.3126/ije.v11i1.45841","url":null,"abstract":"Rainwater Harvesting Systems (RWHSs) are increasingly being used as an alternative or supplementary source of water to curb the water supply deficit in the Kathmandu valley. The harvested rainwater is primarily used for non-potable purposes like flushing toilets and irrigation, but the knowledge on the use of rainwater for potable purpose is remarkably sparse. This study assesses the suitability of rainwater in terms of quantity and quality in a public school that adopts Rooftop RWHS as the source of drinking water. In this study, we observed that the volume of rainwater being harvested is sufficient to address the current demand of drinking water, with a mean rainfall of 1664 mm on a catchment area of 372 m2. Storage capacity needs to be expanded if the demand increases. Physico-chemical and microbial analyses of water samples (before and after a series of treatments) were carried out for the winter, monsoon, and post-monsoon seasons. The values of physico-chemical parameters of the water samples, in all the seasons, were well within both the National Drinking Water Quality Standards (NDWQS, 2005) and the World Health Organisation (WHO, 2017) guidelines for drinking water, while fecal coliforms were detected in the storage tank, but were absent in tap water after the treatments. Based on the findings, we suggest that the harvested rainwater could be used for drinking purposes if properly treated. RWHS use at the institutional level, like in schools, on the one hand, curbs the increasing demand for water in water-deficit locations like Kathmandu, and on the other, encourages the adoption of such sustainable technologies for the water supply.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":"157 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85397429","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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