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Monitoring of the Water Eutrophycation Process in Red Lake, from Harghita County, Romania
Alina Agafiţei,
Vasile Lucian Pavel
Issue:
Volume 10, Issue 1, February 2021
Pages:
1-6
Received:
5 December 2020
Accepted:
31 December 2020
Published:
15 January 2021
Abstract: The main problem of freshwater lakes in the world, eutrophycation represents the over-enrichment of water by nutrients (nitrogen, phosphorus) and has emerged as one of the leading causes of surface water quality impairment. It is a rapidly growing environmental crisis, and worldwide, the number of coastal areas impacted by eutrophycation phenomenon stands at over 500. This important pollution process sets off a chain reaction in the ecosystem, starting with an overabundance of algae and other aquatic plants, excess which eventually decompose, producing large amounts of carbon dioxide. This paper is the result of researches located in Romania, performed over a period of eight years (2012-2019), in the area of a representative natural dam lake of the country - Red Lake, from Harghita County. Our researches aimed the quality parameters of the Red Lake water, the eutrophication process indicators, and their over time evolution. In order to predict the evolution of the studied pollution phenomenon in time, we used the software package “Surface-water Modeling System SMS 13.0” – the complete surface water solution, which was approached for the first time by Aquaveo. This software provides a comprehensive graphical environment for numerical modeling of eutrophycation, and tools for site characterization, model conceptualization and graphical visualization.
Abstract: The main problem of freshwater lakes in the world, eutrophycation represents the over-enrichment of water by nutrients (nitrogen, phosphorus) and has emerged as one of the leading causes of surface water quality impairment. It is a rapidly growing environmental crisis, and worldwide, the number of coastal areas impacted by eutrophycation phenomenon...
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Microbial Changes in the Rhizosphere of Paper Mulberry (Broussonetia papyrifera) Mutant with a High Concentration of Crude Protein
Zhaoxiang Wu,
Qiaoli Liu,
Yanqiang Li,
Huihu Li,
Yongda Zhong,
Faxin Yu
Issue:
Volume 10, Issue 1, February 2021
Pages:
7-16
Received:
2 February 2021
Accepted:
18 February 2021
Published:
26 February 2021
Abstract: Recently, many studies involving plant-microorganism relationships in the rhizosphere of multitudinous important economic crops revealed a clear signature of the host plant in shaping its rhizosphere microbial composition and structure. The nutrient preference of host plant was suggested to be one important factor determining the structure and assembly of the rhizosphere microbiome, but the proof for this hypothesis is still not enough. In this study, soil microbiomes in the rhizosphere of two Paper mulberry varieties with different nitrogen absorption and utilization efficiency were investigated using a short term pot experiment in controlled greenhouse, and the physicochemical properties were also determined. The results showed that, compared to the control plants, the mutated Paper mulberry variety with high N demand reduced the microbial growth significantly and changed the bacterial and the fungal composition in the rhizosphere soils, and alkaline nitrogen was identified to be the most significant factor affecting soil microbial community. Moreover, the effects of excessive consumption of soil nutrient during Paper mulberry cultivation on the microbiome was revealed, and it could be employed in field water and fertilizer management of Paper mulberry planting. This study further confirmed that the soil nutrient status resulting from the plant nutrient preference drives the development of a plant-specific microbiome.
Abstract: Recently, many studies involving plant-microorganism relationships in the rhizosphere of multitudinous important economic crops revealed a clear signature of the host plant in shaping its rhizosphere microbial composition and structure. The nutrient preference of host plant was suggested to be one important factor determining the structure and asse...
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Deforestation and Social Resilience: A Case Study of Gunung Mas District-Central Kalimantan
Herman Hidayat,
Ernawati Sinaga
Issue:
Volume 10, Issue 1, February 2021
Pages:
17-26
Received:
27 January 2021
Accepted:
14 February 2021
Published:
3 March 2021
Abstract: A Current condition the trend of deforestation was decreasing in Indonesia. According to Minister of Environment and Forestry statement (January 29, 2018) the rationale was happened due to that the government released policy for keeping moratorium of estate oil palm concession permission, to implement law enforcement for illegal logging actors, to launch forest restoration program and conservation in protected forest and peat swamp land, and to invite participation of local people for social forestry (Perhutanan Sosial). There is close relation that deforestation issues affect on ecological damage and social resilience and eventually affect on poverty among local community who live in and around forest and people as well. As an illustration ecological damage for instance forest fire, flood, drought, soil erosion, extinction of biodiversity and so forth due to deforestation impact. On the other hand, deforestation eventually affect on social resilience and poverty was indicated more ten percent that marginalized society (they categorized poor) below average national income, no access to land utilization and lower education still high. As registered by National Bureau Statistic (BPS) in 2018 reached 9,82 percent and 10,12 percent in 2017 (total 23,8 million) from 268 million people. From this point of view, the paper focuses on discussion three level analysis to reply deforestation that eventually affect on social resilience. Firstly, is to examine government policy toward private sectors on moratorium of oil palm estate plantation and land conflict. Secondly is shifting cultivator changed into mining activities to respond forest degradation. Thirdly is to invite participation of local people and to carry out social forestry (Perhutanan Sosial) program which aims to promote their income and social welfare and to maintain the sustainability of forest ecosystem.
Abstract: A Current condition the trend of deforestation was decreasing in Indonesia. According to Minister of Environment and Forestry statement (January 29, 2018) the rationale was happened due to that the government released policy for keeping moratorium of estate oil palm concession permission, to implement law enforcement for illegal logging actors, to ...
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Petrographic Characterization of the Semi-industrial Mine of the Sav'or-ci Company (Groudji, Djekanou Department, Center of Côte D'Ivoire)
Ouattara Bakary,
Coulibaly Inza,
Yao Kouakou Alphonse,
Ouattara Gbele
Issue:
Volume 10, Issue 1, February 2021
Pages:
27-35
Received:
15 February 2021
Accepted:
22 March 2021
Published:
30 March 2021
Abstract: SAV'OR-CI's semi-industrial mine is located in Groudji, (Djékanou department), in the central-eastern part of Côte d'Ivoire, in the southern part of the Oumé-Fétékro birimian greenstone belt (West African craton). The Birimian terrains was affected by multiple deformation and mineralization events. This study is a contribution to resolve some issues in the Bririmian such as the improvement of petrography and knowledge. The methodology is on macroscopic to microscopic observations. The lithology of SAVO’R gold mine consists of four major units. The first unit, volcanic, made of volcanic lavas (metabasalt and rhyodacite) and volcaniclastics (mafic tuffs and felsic volcaniclastics). The second unit is a plutonic rocks which is summarized by metagranodiorites and granodiorites. The third unit which outcrops in the form of vein is represented by aplites and microgranites. The last unit is composed of metamorphic rock, precisely gneisses. The presence of lavas, and volcaniclastics reveal respectively that the effusive volcanism and the explosive volcanism have occurred during the setting of area rocks. All lithologies have been affected by hydrothermal alteration marked by quartz veins and veinlets, feldspars, carbonates, often associated with sericite, chlorite and sulphides. Gold is not visible to the eye in the observed lithologies. These rocks are affected by a metamorphism of greenschist facies marked by the presence of chlorite, sericite and epidote minerals.
Abstract: SAV'OR-CI's semi-industrial mine is located in Groudji, (Djékanou department), in the central-eastern part of Côte d'Ivoire, in the southern part of the Oumé-Fétékro birimian greenstone belt (West African craton). The Birimian terrains was affected by multiple deformation and mineralization events. This study is a contribution to resolve some issue...
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