Pub Date : 2021-08-31DOI: 10.22515/SUSTINERE.JES.V5I2.166
Quennie Morales Bilugan, J. S. Limbago, Redel Gutierrez
Microplastic contamination in the aquatic environment is a worldwide problem endangering aquatic organisms and human health. However, few reports were published in the Philippines especially in different edible fishery products. Hence, an investigation to report its prevalence in edible fishery products, especially in a fishery-dependent country, is necessary. This study was conducted to detect, characterize, and quantify microplastics from cultured Green mussel Perna viridis in Bacoor Bay, Cavite, Philippines. Samples (n=63) were collected from the inner, middle, and outer parts of Bacoor Bay. Isolation and characterization were conducted using wet peroxide oxidation-assisted density separation and stereomicroscopy, respectively. Results show a low concentration of microplastics from P. viridis cultured in Bacoor Bay. The highest microplastic count was observed from the inner bay (0.41 particle/gwet weight) followed by the middle bay (0.40 particle/gwet weight), then the outer bay (0.27 particle/gwet weight). The majority of microplastics in all sites were fibers (61%), color red (29%), and were dominated with > 10 to 50 µm length. This study revealed that microplastic is prevalent in Bacoor bay. Further study on confirming the microplastic polymers from P. viridis cultured in Bacoor bay is recommended.
{"title":"Detection and quantification of microplastics from cultured green mussel Perna viridis in Bacoor Bay, Cavite, Philippines","authors":"Quennie Morales Bilugan, J. S. Limbago, Redel Gutierrez","doi":"10.22515/SUSTINERE.JES.V5I2.166","DOIUrl":"https://doi.org/10.22515/SUSTINERE.JES.V5I2.166","url":null,"abstract":"Microplastic contamination in the aquatic environment is a worldwide problem endangering aquatic organisms and human health. However, few reports were published in the Philippines especially in different edible fishery products. Hence, an investigation to report its prevalence in edible fishery products, especially in a fishery-dependent country, is necessary. This study was conducted to detect, characterize, and quantify microplastics from cultured Green mussel Perna viridis in Bacoor Bay, Cavite, Philippines. Samples (n=63) were collected from the inner, middle, and outer parts of Bacoor Bay. Isolation and characterization were conducted using wet peroxide oxidation-assisted density separation and stereomicroscopy, respectively. Results show a low concentration of microplastics from P. viridis cultured in Bacoor Bay. The highest microplastic count was observed from the inner bay (0.41 particle/gwet weight) followed by the middle bay (0.40 particle/gwet weight), then the outer bay (0.27 particle/gwet weight). The majority of microplastics in all sites were fibers (61%), color red (29%), and were dominated with > 10 to 50 µm length. This study revealed that microplastic is prevalent in Bacoor bay. Further study on confirming the microplastic polymers from P. viridis cultured in Bacoor bay is recommended.","PeriodicalId":22187,"journal":{"name":"Sustinere: Journal of Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42539819","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 : 2021-08-31DOI: 10.22515/SUSTINERE.JES.V5I2.154
Novena Damar Asri, P. Yusgiantoro
This study aims to reveal the challenging sustainability within Indonesia’s energy provision by studying the electricity generating cost (GC) formation, externalities’ effect, and current Indonesia’s electricity and budget condition. In studying GC formation, two variables thought to have remarkable influence are fuel price (represented by Fuel Cost/FC) and operating time, which indicates the power plant’s type (represented by Capacity Factor/CF). The regression results indicate that CF has a greater impact on GC than FC; GC increases as FC increases but decreases as CF increases. FC contributes by 10%-86% of GC, subject to fuel prices and CF. Since coal is the cheapest, GCCoal < GCGas < GCDiesel, but internalizing the externalities triples the GCCoal and doubles the GCDiesel. However, its internalization is challenging as it affects the producers’ and consumers’ welfare. Sustainable energy provision is challenging due to two factors. First, there is a dilemma between applying sustainability principles and providing energy immediately. The fastest route, which is the lowest price orientation, is preferable, indicated by coal domination in the electricity mix. Second, sustainability is not the priority yet, indicated by the environment programs is outside the top ten priority development programs.
{"title":"Is sustainability challenging in Indonesia’s energy provision? Fuel type vs. externalities in electricity cost analysis","authors":"Novena Damar Asri, P. Yusgiantoro","doi":"10.22515/SUSTINERE.JES.V5I2.154","DOIUrl":"https://doi.org/10.22515/SUSTINERE.JES.V5I2.154","url":null,"abstract":"This study aims to reveal the challenging sustainability within Indonesia’s energy provision by studying the electricity generating cost (GC) formation, externalities’ effect, and current Indonesia’s electricity and budget condition. In studying GC formation, two variables thought to have remarkable influence are fuel price (represented by Fuel Cost/FC) and operating time, which indicates the power plant’s type (represented by Capacity Factor/CF). The regression results indicate that CF has a greater impact on GC than FC; GC increases as FC increases but decreases as CF increases. FC contributes by 10%-86% of GC, subject to fuel prices and CF. Since coal is the cheapest, GCCoal < GCGas < GCDiesel, but internalizing the externalities triples the GCCoal and doubles the GCDiesel. However, its internalization is challenging as it affects the producers’ and consumers’ welfare. Sustainable energy provision is challenging due to two factors. First, there is a dilemma between applying sustainability principles and providing energy immediately. The fastest route, which is the lowest price orientation, is preferable, indicated by coal domination in the electricity mix. Second, sustainability is not the priority yet, indicated by the environment programs is outside the top ten priority development programs.","PeriodicalId":22187,"journal":{"name":"Sustinere: Journal of Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49549493","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 : 2021-08-31DOI: 10.22515/SUSTINERE.JES.V5I2.159
Hazell B. Valencia, Earl Jhun M. Caballar, Sjerlive Clare C. Dioneda, Ignacio Aguaded, Steve Obanan
This study analyzed the lead (Pb) and cadmium (Cd) concentrations in the water and cultured oysters (Crassostrea iredalei) of Cañacao Bay, Philippines and assessed the health risks associated with these heavy metal contaminations. Oyster and water samples from three sampling stations were collected from October 2016 to January 2017 for heavy metal analysis using inductively coupled plasma optical emission spectrometry (ICP-OES). Results showed low Pb and Cd concentrations in water and C. iredalei, which were within the maximum limits set by the Food and Agriculture Organization (FAO), Food Standards Australia New Zealand (FSANZ) and Food Safety Authority of Ireland (FSAI). Pb concentrations in oysters ranged from < 0.1 to 0.4 ± 0.1 mg/kg while Cd ranged from 0.027 ± 0.006 to 0.083 ± 0.006 mg/kg. Pb and Cd bioaccumulated in oyster tissues, but only Pb exhibited seasonal variation in concentration. The Target Hazard Quotient (THQ) and Total Target Hazard Quotient (TTHQ) were used to estimate noncarcinogenic health risks for Pb and Cd through oyster consumption. All THQs were below 1.0 indicating that there was no appreciable risk to the general population for developing noncarcinogenic effects caused by Pb and Cd in cultured oysters. Continuous monitoring of heavy metals in aquaculture areas and seafood is warranted to ensure food safety among consuming public.
{"title":"Heavy metal accumulation and risk assessment of lead and cadmium in cultured oysters (Crassostrea iredalei) of Cañacao Bay, Philippines","authors":"Hazell B. Valencia, Earl Jhun M. Caballar, Sjerlive Clare C. Dioneda, Ignacio Aguaded, Steve Obanan","doi":"10.22515/SUSTINERE.JES.V5I2.159","DOIUrl":"https://doi.org/10.22515/SUSTINERE.JES.V5I2.159","url":null,"abstract":"This study analyzed the lead (Pb) and cadmium (Cd) concentrations in the water and cultured oysters (Crassostrea iredalei) of Cañacao Bay, Philippines and assessed the health risks associated with these heavy metal contaminations. Oyster and water samples from three sampling stations were collected from October 2016 to January 2017 for heavy metal analysis using inductively coupled plasma optical emission spectrometry (ICP-OES). Results showed low Pb and Cd concentrations in water and C. iredalei, which were within the maximum limits set by the Food and Agriculture Organization (FAO), Food Standards Australia New Zealand (FSANZ) and Food Safety Authority of Ireland (FSAI). Pb concentrations in oysters ranged from < 0.1 to 0.4 ± 0.1 mg/kg while Cd ranged from 0.027 ± 0.006 to 0.083 ± 0.006 mg/kg. Pb and Cd bioaccumulated in oyster tissues, but only Pb exhibited seasonal variation in concentration. The Target Hazard Quotient (THQ) and Total Target Hazard Quotient (TTHQ) were used to estimate noncarcinogenic health risks for Pb and Cd through oyster consumption. All THQs were below 1.0 indicating that there was no appreciable risk to the general population for developing noncarcinogenic effects caused by Pb and Cd in cultured oysters. Continuous monitoring of heavy metals in aquaculture areas and seafood is warranted to ensure food safety among consuming public.","PeriodicalId":22187,"journal":{"name":"Sustinere: Journal of Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44941275","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 : 2021-08-31DOI: 10.22515/SUSTINERE.JES.V5I2.144
M. L. Adekanbi, Banji Titilope Ibukun, Eshiemogie Steve
As a result of the damaging effects they have on the climate, recent campaigns against fossil fuels, constantly emphasize the need to completely eliminate their use. To this effect, is a pressing need to source for other sources of energy that have the ability to decrease the level of greenhouse gas emissions to the atmosphere. These alternatives have to be easily accessible and should contribute to the industrial expansion of developing regions, especially Sub-saharan Africa. Poor access to electricity is a major challenge that contributes to the retarded state of development of some countries in Sub-saharan Africa, and renewable energy alternatives, such as biofuels, can perfectly solve this oddity. Biofuels possess unique attributes that can help the world attain a state of energy security and energy balance. The depletion of fossil fuels and other factors like technological advancement and current industrial expansion occurring in most countries in Sub-saharan Africa poses a threat to the availability of energy in the region and it is a major setback to the achievement of the United Nation's Sustainable Development Goal 7. Narrowing down to the use of biodiesels, implementing their use can save the continent from a lot of damage and build up a more sustainable energy sector. Massive deployment of Biodiesels into the energy sector of Sub-saharan Africa will not only ease the difficulty in accessing energy, it will also boost the agricultural sector and economy of the countries that constitute the region. This paper reviews the current state of biodiesel in the African sub-saharan region.
{"title":"The potential of biodiesel in mitigating the energy crisis in Sub-Saharan Africa energy sectors","authors":"M. L. Adekanbi, Banji Titilope Ibukun, Eshiemogie Steve","doi":"10.22515/SUSTINERE.JES.V5I2.144","DOIUrl":"https://doi.org/10.22515/SUSTINERE.JES.V5I2.144","url":null,"abstract":"As a result of the damaging effects they have on the climate, recent campaigns against fossil fuels, constantly emphasize the need to completely eliminate their use. To this effect, is a pressing need to source for other sources of energy that have the ability to decrease the level of greenhouse gas emissions to the atmosphere. These alternatives have to be easily accessible and should contribute to the industrial expansion of developing regions, especially Sub-saharan Africa. Poor access to electricity is a major challenge that contributes to the retarded state of development of some countries in Sub-saharan Africa, and renewable energy alternatives, such as biofuels, can perfectly solve this oddity. Biofuels possess unique attributes that can help the world attain a state of energy security and energy balance. The depletion of fossil fuels and other factors like technological advancement and current industrial expansion occurring in most countries in Sub-saharan Africa poses a threat to the availability of energy in the region and it is a major setback to the achievement of the United Nation's Sustainable Development Goal 7. Narrowing down to the use of biodiesels, implementing their use can save the continent from a lot of damage and build up a more sustainable energy sector. Massive deployment of Biodiesels into the energy sector of Sub-saharan Africa will not only ease the difficulty in accessing energy, it will also boost the agricultural sector and economy of the countries that constitute the region. This paper reviews the current state of biodiesel in the African sub-saharan region.","PeriodicalId":22187,"journal":{"name":"Sustinere: Journal of Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47456488","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 : 2021-08-31DOI: 10.22515/SUSTINERE.JES.V5I2.173
Canberk Yurt, D. Deniz
Sustainable living is a key concept for eco-friendly lifestyles in consumer societies. Two major sustainable living solutions are based on knowledge and product. Their roles and impacts on sustainable living are controversial. Despite offering innovative approaches to sustainability solutions, products are consumption-dependent. On the contrary, knowledge-based solutions are resource-intensive, while technically resources are limited. This research analyzed the advantages and disadvantages of knowledge-based and product-based sustainable living solutions through a survey regarding environmental sensitivity and sustainable lifestyles from a specific local market. This study highlighted IKEA as the case. From the consumer’s point of view, some IKEA sustainable living dimensions are more knowledge-based, yet the rest of them are product-based. For holistic sustainable living solutions, the combination of the two is crucial. The findings of this study suggest strategies to increase individual and corporate awareness of sustainable living practices from knowledge and product perspectives. In this respect, this study is valuable for IKEA and other companies to revise their strategies in promoting sustainable living and guide sustainable consumer behavior.
{"title":"Product-based and knowledge-based sustainable living practices: The case of IKEA","authors":"Canberk Yurt, D. Deniz","doi":"10.22515/SUSTINERE.JES.V5I2.173","DOIUrl":"https://doi.org/10.22515/SUSTINERE.JES.V5I2.173","url":null,"abstract":"Sustainable living is a key concept for eco-friendly lifestyles in consumer societies. Two major sustainable living solutions are based on knowledge and product. Their roles and impacts on sustainable living are controversial. Despite offering innovative approaches to sustainability solutions, products are consumption-dependent. On the contrary, knowledge-based solutions are resource-intensive, while technically resources are limited. This research analyzed the advantages and disadvantages of knowledge-based and product-based sustainable living solutions through a survey regarding environmental sensitivity and sustainable lifestyles from a specific local market. This study highlighted IKEA as the case. From the consumer’s point of view, some IKEA sustainable living dimensions are more knowledge-based, yet the rest of them are product-based. For holistic sustainable living solutions, the combination of the two is crucial. The findings of this study suggest strategies to increase individual and corporate awareness of sustainable living practices from knowledge and product perspectives. In this respect, this study is valuable for IKEA and other companies to revise their strategies in promoting sustainable living and guide sustainable consumer behavior.","PeriodicalId":22187,"journal":{"name":"Sustinere: Journal of Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44907713","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 : 2020-12-31DOI: 10.22515/sustinere.jes.v4i3.121
Mariel Alem, T. Herberz, Vishnu Sankar Karanayil, Ahmed Ashfaque Hamid Fardin
Climate change and an increased interest in renewable energy have resulted in a burgeoning wind energy sector. However, in the recent past, wind farms have faced resistance in acquiring permits due to concerns about their long-term effects on the local community. To understand the extent of these externalities, this study qualitatively meta-analyses four socio-economic impacts of interest, namely: house prices, tourism, catalytic effects of supply chain clustering, and social change. Geographically, the analysed reports include Europe, Canada and the US, and deductions are made for the EU. In order to bridge the gap of unavailability of primary data on the wind sector, relevant conclusions are drawn from other comparable sectors. Based on a rigorous review of primary qualitative research, this study concludes that offshore wind farms should be located more than 40 km away from the coast to eliminate risks of housing price devaluation and tourist activity reduction, which would directly affect the economic value of the region. In addition, the study found limited evidence to acknowledge the employment benefits in the local economy and social change in the community due to offshore wind farms. Monitoring mechanisms should be set up to prove or disprove the creation of local employment, crime and substance abuse. Furthermore, the study finds that adequate planning and management can ensure better socioeconomic outcomes in the community. Further research is recommended for the specific impact of overhead transmission lines and substations on property values and tourism.
{"title":"A Qualitative meta-analysis of the socioeconomic impacts of offshore wind farms","authors":"Mariel Alem, T. Herberz, Vishnu Sankar Karanayil, Ahmed Ashfaque Hamid Fardin","doi":"10.22515/sustinere.jes.v4i3.121","DOIUrl":"https://doi.org/10.22515/sustinere.jes.v4i3.121","url":null,"abstract":"Climate change and an increased interest in renewable energy have resulted in a burgeoning wind energy sector. However, in the recent past, wind farms have faced resistance in acquiring permits due to concerns about their long-term effects on the local community. To understand the extent of these externalities, this study qualitatively meta-analyses four socio-economic impacts of interest, namely: house prices, tourism, catalytic effects of supply chain clustering, and social change. Geographically, the analysed reports include Europe, Canada and the US, and deductions are made for the EU. In order to bridge the gap of unavailability of primary data on the wind sector, relevant conclusions are drawn from other comparable sectors. Based on a rigorous review of primary qualitative research, this study concludes that offshore wind farms should be located more than 40 km away from the coast to eliminate risks of housing price devaluation and tourist activity reduction, which would directly affect the economic value of the region. In addition, the study found limited evidence to acknowledge the employment benefits in the local economy and social change in the community due to offshore wind farms. Monitoring mechanisms should be set up to prove or disprove the creation of local employment, crime and substance abuse. Furthermore, the study finds that adequate planning and management can ensure better socioeconomic outcomes in the community. Further research is recommended for the specific impact of overhead transmission lines and substations on property values and tourism.","PeriodicalId":22187,"journal":{"name":"Sustinere: Journal of Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47908875","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 : 2020-12-31DOI: 10.22515/sustinere.jes.v4i3.123
P. Okoye, K. Okolie, Christian Ifeanyi Ohaedeghasi, C. Ngwu
This study examined the socioecological roles of music sounds towards achieving acoustically sustainable residential building. The study adopted a survey research approach where questionnaires were distributed to the occupants of different types of residential buildings in three urban cities of Anambra State Nigeria. The survey data were analysed using Statistical Package for the Social Science (SPSS) Software. The results revealed that music plays significant roles towards acoustically sustainable building performance with the overall average mean score index of 4.36 and a range of 3.64 to 4.87. But the three most outstanding roles played by music towards acoustically sustainable building performance were: Enabling pleasant sound environment (4.87), improving quality of relaxation and resting (4.83), and increasing acoustic comfort and satisfaction (4.79). The result of one-way ANOVA revealed that music sounds significantly influence acoustical sustainability performance of residential buildings (p-value (.000) < α (0.05); F-ratio (148.377) > F-critical (3.020)); and that there was no significance difference between opinions of residents of the three urban cities in this regard (p-value (0.713) > α (0.05); F-ratio (0.338) < F-critical (3.020)). This study therefore, canvassed for integration of music principles and acoustics into sustainable building design processes as a way of achieving a sustainable building.
{"title":"Ecomusicology: A socioecological dimension towards acoustically sustainable residential buildings","authors":"P. Okoye, K. Okolie, Christian Ifeanyi Ohaedeghasi, C. Ngwu","doi":"10.22515/sustinere.jes.v4i3.123","DOIUrl":"https://doi.org/10.22515/sustinere.jes.v4i3.123","url":null,"abstract":"This study examined the socioecological roles of music sounds towards achieving acoustically sustainable residential building. The study adopted a survey research approach where questionnaires were distributed to the occupants of different types of residential buildings in three urban cities of Anambra State Nigeria. The survey data were analysed using Statistical Package for the Social Science (SPSS) Software. The results revealed that music plays significant roles towards acoustically sustainable building performance with the overall average mean score index of 4.36 and a range of 3.64 to 4.87. But the three most outstanding roles played by music towards acoustically sustainable building performance were: Enabling pleasant sound environment (4.87), improving quality of relaxation and resting (4.83), and increasing acoustic comfort and satisfaction (4.79). The result of one-way ANOVA revealed that music sounds significantly influence acoustical sustainability performance of residential buildings (p-value (.000) < α (0.05); F-ratio (148.377) > F-critical (3.020)); and that there was no significance difference between opinions of residents of the three urban cities in this regard (p-value (0.713) > α (0.05); F-ratio (0.338) < F-critical (3.020)). This study therefore, canvassed for integration of music principles and acoustics into sustainable building design processes as a way of achieving a sustainable building.","PeriodicalId":22187,"journal":{"name":"Sustinere: Journal of Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41578828","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 : 2020-12-31DOI: 10.22515/sustinere.jes.v4i3.119
A. Zamroni, B. P. Putra, H. Prasetya
Changes in the river morphology require knowledge of the suite of drivers that control it, whether natural or human. The study aims to analyze the anthropogenic influences on morphological changes in the Progo River using Google Earth Images. It is essential to know the recent changes in the morphology of the Progo River so that stakeholders can make policies to control human activities that influence the morphology changes of the Progo River. The study area is located in Bantul Regency, Daerah Istimewa Yogyakarta Province, Java Island, Indonesia. The size of the Progo River watershed is around 17,432 square kilometers. Google Earth Images analysis is carried out to analyze the morphological changes of the Progo River from 2012 to 2019. The result shows that land-use changes due to dam construction affected the sediment supply downstream of the dam. In addition, land-use changes around the Progo River due to the opening of agricultural land and settlement areas had an effect on decreasing the infiltration area, so that the number of trees holding the soil from erosion was reduced, producing more eroded sediment that flowed to the river. Sand mining in the river could cause the deepening of water depths and a decrease in the average height of the riverbed.
{"title":"Anthropogenic influences on morphological changes in the Progo River, Daerah Istimewa Yogyakarta Province, Indonesia","authors":"A. Zamroni, B. P. Putra, H. Prasetya","doi":"10.22515/sustinere.jes.v4i3.119","DOIUrl":"https://doi.org/10.22515/sustinere.jes.v4i3.119","url":null,"abstract":"Changes in the river morphology require knowledge of the suite of drivers that control it, whether natural or human. The study aims to analyze the anthropogenic influences on morphological changes in the Progo River using Google Earth Images. It is essential to know the recent changes in the morphology of the Progo River so that stakeholders can make policies to control human activities that influence the morphology changes of the Progo River. The study area is located in Bantul Regency, Daerah Istimewa Yogyakarta Province, Java Island, Indonesia. The size of the Progo River watershed is around 17,432 square kilometers. Google Earth Images analysis is carried out to analyze the morphological changes of the Progo River from 2012 to 2019. The result shows that land-use changes due to dam construction affected the sediment supply downstream of the dam. In addition, land-use changes around the Progo River due to the opening of agricultural land and settlement areas had an effect on decreasing the infiltration area, so that the number of trees holding the soil from erosion was reduced, producing more eroded sediment that flowed to the river. Sand mining in the river could cause the deepening of water depths and a decrease in the average height of the riverbed.","PeriodicalId":22187,"journal":{"name":"Sustinere: Journal of Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49354169","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 : 2020-08-26DOI: 10.22515/sustinere.jes.v4i2.102
Fikri Nugroho Utomo, D. Supyandi, N. Syamsiyah, Ernah Ernah
Indonesia has various tourist attractions. Agro-tourism is one of the potential tourism. Orchid Forest is an agro-tourism object that combines pine forest areas with orchid cultivation. Tourist attractions that utilize the potential of natural resources have an unknown economic value. This research aims to know the economic value of Orchid Forest and what factors influence the frequency of visits. This research used an individual travel cost method (ITCM) to estimate the economic value of Orchid Forest. The results indicate factors that significantly influence the frequency of visits are respondents' age and residence distance. The value of consumer surplus is Rp 102,000 and the economic value of Orchid Forest in 2019 was Rp 70,365,618,000. This value will give a new perspective for public authorities for the protection and further development of tourist attractions in the future.
{"title":"Economic value of Bandung Orchid Forest, West Java","authors":"Fikri Nugroho Utomo, D. Supyandi, N. Syamsiyah, Ernah Ernah","doi":"10.22515/sustinere.jes.v4i2.102","DOIUrl":"https://doi.org/10.22515/sustinere.jes.v4i2.102","url":null,"abstract":"Indonesia has various tourist attractions. Agro-tourism is one of the potential tourism. Orchid Forest is an agro-tourism object that combines pine forest areas with orchid cultivation. Tourist attractions that utilize the potential of natural resources have an unknown economic value. This research aims to know the economic value of Orchid Forest and what factors influence the frequency of visits. This research used an individual travel cost method (ITCM) to estimate the economic value of Orchid Forest. The results indicate factors that significantly influence the frequency of visits are respondents' age and residence distance. The value of consumer surplus is Rp 102,000 and the economic value of Orchid Forest in 2019 was Rp 70,365,618,000. This value will give a new perspective for public authorities for the protection and further development of tourist attractions in the future.","PeriodicalId":22187,"journal":{"name":"Sustinere: Journal of Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44298701","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 : 2020-04-30DOI: 10.22515/sustinere.jes.v4i1.97
Ekenwosu Joseph Ugochukwu, Peter Ugochukwu Okorie
The study has an objective of isolating and characterizing suspected Streptomycetes with the potential to decompose organic compounds in arable soil. The isolates were grown on a culture media and a total of 61 slopes were inoculated and labeled using the following characterization tests: catalase test, gram staining, oxidase test, motility test, and oxidative-fermentative test. After characterization tests, data generated in the laboratory were analyzed and the study showed that isolates A2 (c, e), B2 (c), C1 (b), C2 (a), D1 (e) and D2 (d) were suspected to be Streptomycetes species. Isolates D1 (d) and D2 (b) were suspected to be Escherichia coli while isolates A1 (a), B2 (a, b) and D1 (a) were suspected to be Bacillus species. Isolates A1 (b), C1 (a), D1 (c), D2 (e) were suspected to be Pseudomonas species. Further identification showed that isolates A2 (d) and B1 (b) could be Enterobacter species while isolates A2 (a, b) were suspected to be Klebsiella species. The study tentatively identified Streptomycetes species; Escherichia coli; Bacillus species; Enterobacter species; Pseudomonas species and Klebsiella species. The suspected Streptomycetes identified were considered as potential organic matter decomposers in arable soil.
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