Subjects -> ENVIRONMENTAL STUDIES (Total: 913 journals)
    - ENVIRONMENTAL STUDIES (810 journals)
    - POLLUTION (31 journals)
    - TOXICOLOGY AND ENVIRONMENTAL SAFETY (54 journals)
    - WASTE MANAGEMENT (18 journals)

ENVIRONMENTAL STUDIES (810 journals)            First | 1 2 3 4 5     

Showing 201 - 378 of 378 Journals sorted alphabetically
Energy and Environment Research     Open Access   (Followers: 13)
Energy and Environmental Engineering     Open Access   (Followers: 5)
Energy, Ecology and Environment     Hybrid Journal  
Entrepreneurship and Sustainability Issues     Open Access  
EnviroLab Asia     Open Access  
Environment & Ecosystem Science     Open Access   (Followers: 2)
Environment and Behavior     Hybrid Journal   (Followers: 24)
Environment and Development Economics     Hybrid Journal   (Followers: 43)
Environment and Ecology Research     Open Access   (Followers: 9)
Environment and Natural Resources Research     Open Access   (Followers: 5)
Environment and Planning A : Economy and Space     Full-text available via subscription   (Followers: 56)
Environment and Planning B : Urban Analytics and City Science     Full-text available via subscription   (Followers: 39)
Environment and Planning C : Politics and Space     Full-text available via subscription   (Followers: 44)
Environment and Planning D : Society and Space     Full-text available via subscription   (Followers: 76)
Environment and Planning E : Nature and Space     Hybrid Journal   (Followers: 3)
Environment and Pollution     Open Access   (Followers: 10)
Environment and Society     Open Access   (Followers: 9)
Environment Conservation Journal     Open Access   (Followers: 4)
Environment International     Hybrid Journal   (Followers: 15)
Environment Systems & Decisions     Hybrid Journal   (Followers: 1)
Environment, Development and Sustainability     Hybrid Journal   (Followers: 39)
Environment, Space, Place     Full-text available via subscription   (Followers: 9)
Environment: Science and Policy for Sustainable Development     Hybrid Journal   (Followers: 40)
Environmental & Engineering Geoscience     Full-text available via subscription   (Followers: 5)
Environmental & Socio-economic Studies     Open Access   (Followers: 1)
Environmental Advances     Open Access  
Environmental and Climate Technologies     Open Access   (Followers: 3)
Environmental and Molecular Mutagenesis     Hybrid Journal   (Followers: 4)
Environmental and Sustainability Indicators     Open Access   (Followers: 6)
Environmental and Water Sciences, public Health and Territorial Intelligence Journal     Open Access   (Followers: 1)
Environmental Bioindicators     Hybrid Journal   (Followers: 2)
Environmental Challenges     Open Access   (Followers: 1)
Environmental Chemistry     Hybrid Journal   (Followers: 9)
Environmental Chemistry and Ecotoxicology     Open Access  
Environmental Chemistry Letters     Hybrid Journal   (Followers: 4)
Environmental Claims Journal     Hybrid Journal   (Followers: 1)
Environmental Communication: A Journal of Nature and Culture     Hybrid Journal   (Followers: 16)
Environmental Development     Hybrid Journal   (Followers: 3)
Environmental Disease     Open Access   (Followers: 3)
Environmental DNA     Open Access  
Environmental Economics     Open Access   (Followers: 2)
Environmental Education Research     Hybrid Journal   (Followers: 16)
Environmental Engineering Science     Hybrid Journal   (Followers: 9)
Environmental Ethics     Hybrid Journal   (Followers: 12)
Environmental Evidence     Open Access   (Followers: 1)
Environmental Fluid Mechanics     Hybrid Journal   (Followers: 11)
Environmental Forensics     Hybrid Journal  
Environmental Geosciences     Full-text available via subscription   (Followers: 6)
Environmental Geotechnics     Hybrid Journal   (Followers: 6)
Environmental Hazards     Hybrid Journal   (Followers: 3)
Environmental Health     Open Access   (Followers: 12)
Environmental Health Insights     Open Access   (Followers: 5)
Environmental History     Hybrid Journal   (Followers: 28)
Environmental Impact Assessment Review     Hybrid Journal   (Followers: 22)
Environmental Innovation and Societal Transitions     Hybrid Journal   (Followers: 9)
Environmental Justice     Hybrid Journal   (Followers: 12)
Environmental Law Review     Full-text available via subscription   (Followers: 23)
Environmental Management     Open Access   (Followers: 53)
Environmental Management and Sustainable Development     Open Access   (Followers: 9)
Environmental Microbiology Reports     Hybrid Journal   (Followers: 9)
Environmental Modeling & Assessment     Hybrid Journal   (Followers: 18)
Environmental Modelling & Software     Hybrid Journal   (Followers: 35)
Environmental Monitoring and Assessment     Hybrid Journal   (Followers: 39)
Environmental Nanotechnology, Monitoring and Management     Open Access   (Followers: 1)
Environmental Policy and Governance     Hybrid Journal   (Followers: 16)
Environmental Pollutants and Bioavailability     Open Access  
Environmental Pollution     Hybrid Journal   (Followers: 24)
Environmental Processes : An International Journal     Hybrid Journal  
Environmental Research     Hybrid Journal   (Followers: 11)
Environmental Science & Policy     Hybrid Journal   (Followers: 19)
Environmental Science & Technology     Hybrid Journal   (Followers: 180)
Environmental Science & Technology Letters     Hybrid Journal   (Followers: 7)
Environmental Science : Atmospheres     Open Access   (Followers: 1)
Environmental Science : Water Research & Technology     Hybrid Journal   (Followers: 7)
Environmental Science and Ecotechnology     Open Access   (Followers: 3)
Environmental Science and Pollution Research     Hybrid Journal   (Followers: 11)
Environmental Science and Sustainable Development : International Journal Of Environmental Science & Sustainable Development     Open Access   (Followers: 12)
Environmental Science: Advances     Open Access   (Followers: 3)
Environmental Sciences     Hybrid Journal   (Followers: 5)
Environmental Sciences Europe     Open Access   (Followers: 2)
Environmental Skeptics and Critics     Open Access  
Environmental Smoke     Open Access  
Environmental Sociology     Hybrid Journal   (Followers: 2)
Environmental Sustainability     Hybrid Journal   (Followers: 1)
Environmental Systems Research     Open Access   (Followers: 2)
Environmental Technology     Hybrid Journal   (Followers: 2)
Environmental Technology & Innovation     Full-text available via subscription  
Environmental Technology Reviews     Hybrid Journal  
Environmental Toxicology     Hybrid Journal   (Followers: 11)
Environmental Toxicology & Chemistry     Hybrid Journal   (Followers: 22)
Environmental Toxicology and Pharmacology     Hybrid Journal   (Followers: 9)
Environmental Values     Full-text available via subscription   (Followers: 10)
Environments     Open Access  
Erwerbs-Obstbau     Hybrid Journal  
eScience     Open Access   (Followers: 1)
Estuaries and Coasts     Hybrid Journal   (Followers: 22)
Ethics & the Environment     Full-text available via subscription   (Followers: 7)
Ethics in Science and Environmental Politics     Hybrid Journal   (Followers: 5)
Ethics, Policy & Environment     Hybrid Journal   (Followers: 11)
Ethiopian Journal of Environmental Studies and Management     Open Access   (Followers: 3)
Études caribéennes     Open Access   (Followers: 1)
Euro-Mediterranean Journal for Environmental Integration     Hybrid Journal  
European Energy and Environmental Law Review     Full-text available via subscription   (Followers: 14)
European Environment: The Journal of European Environmental Policy     Hybrid Journal   (Followers: 5)
European Journal of Ecology     Open Access   (Followers: 1)
European Journal of Environmental and Civil Engineering     Hybrid Journal   (Followers: 5)
European Journal of Environmental Sciences     Open Access   (Followers: 1)
European Spatial Research and Policy     Open Access   (Followers: 9)
Evolutionary Ecology     Hybrid Journal   (Followers: 25)
Expert Opinion on Environmental Biology     Hybrid Journal  
Exposure and Health     Hybrid Journal  
Facta Universitatis, Series : Working and Living Environmental Protection     Open Access   (Followers: 1)
FIGEMPA : Investigación y Desarrollo     Open Access   (Followers: 1)
Fire Ecology     Open Access   (Followers: 2)
Food and Chemical Toxicology     Hybrid Journal   (Followers: 18)
Food and Ecological Systems Modelling Journal     Open Access  
Food and Environment Safety     Open Access   (Followers: 3)
Fordham Environmental Law Review     Open Access   (Followers: 4)
Forest Ecology and Management     Hybrid Journal   (Followers: 61)
Foresta Veracruzana     Open Access  
Forestry Chronicle     Full-text available via subscription   (Followers: 9)
Freshwater Biology     Hybrid Journal   (Followers: 32)
Fronteiras : Journal of Social, Technological and Environmental Science     Open Access  
Frontier of Environmental Science     Open Access   (Followers: 2)
Frontiers in Climate     Open Access   (Followers: 4)
Frontiers in Ecology and the Environment     Hybrid Journal   (Followers: 72)
Frontiers in Environmental Science     Open Access   (Followers: 1)
Frontiers in Water     Open Access  
Frontiers of Environmental Science & Engineering     Hybrid Journal   (Followers: 3)
Future Cities and Environment     Open Access   (Followers: 5)
FUTY Journal of the Environment     Full-text available via subscription  
Geo : Geography and Environment     Open Access   (Followers: 6)
Geo-Image     Open Access   (Followers: 1)
Geoacta     Open Access   (Followers: 2)
Geochemical Transactions     Open Access   (Followers: 2)
Geochronometria     Open Access   (Followers: 1)
Geoenvironmental Disasters     Open Access   (Followers: 3)
Geoforum     Hybrid Journal   (Followers: 25)
GeoHealth     Open Access  
Geology, Geophysics and Environment     Open Access   (Followers: 2)
Géomorphologie : relief, processus, environnement     Open Access   (Followers: 1)
GeoScience Engineering     Open Access  
Geospatial Health     Open Access   (Followers: 1)
Geosystems and Geoenvironment     Open Access  
Global Challenges     Open Access  
Global Environment     Full-text available via subscription   (Followers: 1)
Global Environmental Change     Hybrid Journal   (Followers: 45)
Global Journal of Environmental Science and Management     Open Access   (Followers: 6)
Global Journal of Environmental Sciences     Full-text available via subscription  
Global Sustainability     Open Access   (Followers: 3)
Golden Gate University Environmental Law Journal     Open Access   (Followers: 3)
Grassland Science     Hybrid Journal  
Green Energy & Environment     Open Access   (Followers: 2)
Greenhouse Gas Measurement and Management     Hybrid Journal  
Groundwater for Sustainable Development     Full-text available via subscription   (Followers: 5)
Harvard Environmental Law Review     Free   (Followers: 12)
Health Services Management Research     Hybrid Journal   (Followers: 16)
Health, Safety and Environment     Open Access   (Followers: 34)
Hereditas     Open Access   (Followers: 1)
Hidrobiológica     Open Access  
Historia Ambiental Latinoamericana y Caribeña     Open Access   (Followers: 2)
História, Natureza e Espaço - Revista Eletrônica do Grupo de Pesquisa NIESBF     Open Access  
Home Health Care Management & Practice     Hybrid Journal   (Followers: 1)
Horticulture, Environment, and Biotechnology     Hybrid Journal   (Followers: 10)
Human & Experimental Toxicology     Hybrid Journal   (Followers: 8)
Human Ecology     Open Access   (Followers: 24)
Hydrology: Current Research     Open Access   (Followers: 9)
Ideas in Ecology and Evolution     Open Access   (Followers: 9)
IMA Journal of Management Mathematics     Hybrid Journal   (Followers: 1)
Indonesian Green Technology Journal     Open Access  
Indonesian Journal of Conservation     Open Access  
Indonesian Journal of Sustainability Accounting and Management     Open Access  
Indoor Air     Hybrid Journal   (Followers: 2)
Information Systems Management     Hybrid Journal   (Followers: 10)
Informs Journal on Applied Analytics:     Full-text available via subscription   (Followers: 15)
Ingeniería Hidráulica y Ambiental     Open Access  
Inhalation Toxicology     Hybrid Journal   (Followers: 9)
Innovative Infrastructure Solutions     Hybrid Journal  
Integrated Environmental Assessment and Management     Hybrid Journal   (Followers: 8)
Interdisciplinary Environmental Review     Hybrid Journal   (Followers: 3)
International Aquatic Research     Open Access   (Followers: 4)
International Archives of Occupational and Environmental Health     Hybrid Journal   (Followers: 7)
International Electronic Journal of Environmental Education     Open Access   (Followers: 1)
International Environmental Agreements: Politics, Law and Economics     Hybrid Journal   (Followers: 14)
International Journal of Acarology     Hybrid Journal   (Followers: 1)
International Journal of Agricultural and Environmental Information Systems     Full-text available via subscription   (Followers: 1)
International Journal of Alternative Propulsion     Hybrid Journal   (Followers: 23)
International Journal of Corrosion     Open Access   (Followers: 10)
International Journal of Critical Infrastructures     Hybrid Journal   (Followers: 2)
International Journal of Disaster Risk Reduction     Hybrid Journal   (Followers: 18)
International Journal of Disaster Risk Science     Open Access   (Followers: 14)
International Journal of Ecological Economics and Statistics     Full-text available via subscription   (Followers: 4)
International Journal of Ecology & Development     Full-text available via subscription   (Followers: 2)
International Journal of Energy and Environmental Engineering     Open Access   (Followers: 3)
International Journal of Energy and Water Resources     Hybrid Journal  
International Journal of Environment     Open Access   (Followers: 3)
International Journal of Environment and Climate Change     Open Access   (Followers: 20)
International Journal of Environment and Geoinformatics     Open Access   (Followers: 4)
International Journal of Environment and Health     Hybrid Journal   (Followers: 5)
International Journal of Environment and Pollution     Hybrid Journal   (Followers: 2)

  First | 1 2 3 4 5     

Similar Journals
Journal Cover
Environmental Sustainability
Number of Followers: 1  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Online) 2523-8922
Published by Springer-Verlag Homepage  [2469 journals]
  • Land use change matrix and slope gradient soil carbon assessment from
           forest to different cropping systems in Togo, West Africa

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      Abstract: Abstract This study conducted in Kloto District (Togo, West Africa) analysed time series land use transition carbon gains, losses, and emissions using a matrix of land use change and point-based emission and removal estimators. Land use transition experiment plots, slope gradient composite soil sampling methods across forest and agricultural lands were used within the same soil unit and climatic zones. The analysis of variance (p = 5%, Fpr < 0.001) revealed low soil organic carbon density (SOCD) (MgCha−1) under maize (54.33) and cassava (52.98) compared to cocoa agroforestry (169.52) and forest (189.34) plots. Based on land use change observed between 1985 and 2017, the transition of forest and cocoa agroforestry areas to cassava and maize depicted high carbon dioxide release of up to 100,059 and 74,192 for cassava and 5342 and 5227 MgCO2ey−1 for maize, respectively. Whereas the transition from maize to forest sequestered more carbon (1423 MgCO2ey−1) compared to the transition from cocoa agroforestry and cassava to forest, which accounted for 626 and 404 MgCO2ey−1, respectively. In terms of carbon release and sequestration over 32-year, results showed slightly higher carbon sequestration through the transition of cassava and maize to agroforestry than to forest. Significant losses were estimated for the transition from forest and cocoa agroforestry to maize and cassava mono-cropping. Results revealed that mono-cropping of annual crops without residue return after forest or cocoa agroforestry transitions results in similar carbon loss and carbon dioxide equivalence (CO2e) release. Consequently, site-specific integrated landscape management and dissemination of climate-smart agricultural practices like agroforestry are promising options to considerably reduce GHG emissions in Southern Togo.
      PubDate: 2022-04-22
       
  • Fungal consortium and nitrogen supplementation stimulates soil microbial
           communities to accelerate in situ degradation of paddy straw

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      Abstract: Abstract Disposal of paddy straw is a major problem in the North-West part of India, which leads to its burning, and subsequent atmospheric pollution. Therefore, a field experiment was undertaken to evaluate the potential of microbial priming and nitrogen (N) supplementation towards improved in situ degradation of paddy straw. A fungal consortium comprising two promising lignocellulolytic fungi namely Coprinopsis cinerea LA2 and Cyathus stercoreus ITCC3745 was applied to stubbles left in the field after the harvesting of rice. Five treatments were undertaken: T1: Straw removed, T2: Straw retained (3 t ha− 1), T3: Straw retained + fungal consortium (3 kg ha− 1) + Urea (30 kg ha− 1), T4: Straw retained + Urea (30 kg ha− 1), T5: Straw retained + fungal consortium (3 kg ha− 1). At 30 DAT (days after treatment), an increase in fungal (14%), bacterial (17%) and cellulolytic microorganisms (20%) was recorded in the T3 treatment. The activity of soil hydrolytic enzymes also almost doubled in this treatment recording 2.6- and 2.8-fold increase for cellulase and β glucosidase respectively, within a month indicating degradation of straw. Study of various soil microbial activity parameters and CO2 emission also demonstrated superiority of T3 treatment. The study showed that microbial inoculation and N priming can be an easy and faster option for in-situ degradation of crop residues which will also help in the improvement of the soil organic carbon (SOC) in long run besides increasing the grain yield of subsequent wheat crop.
      PubDate: 2022-04-22
       
  • Systematic mapping on the importance of vultures in the Indian public
           health discourse

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      Abstract: Abstract Vultures are of immense ecological significance to forest and urban ecosystems. These birds play a major role in curbing environmental contamination through scavenging on carcasses. Prevention of spread of diseases is pivotal for public health and is an inexorable economic burden for any country. We present the crucial role vultures can play in disease mitigation and public health by regulating or decreasing the spread of zoonotic diseases. We elaborate examples from three zoonotic diseases; rabies, brucellosis and tuberculosis, which spread among dogs and cattle as well as human population. We establish the viable links in the transmission of these diseases from the infected dead and alive animals to humans and their possible exacerbation in the absence of vultures. These indirect links help formulate the case for increased interventions for disease spread and control along with conservation of these scavengers. Their role as natural and effective cleaners of the environment in the Indian health discourse is of importance because they can reduce the expenses of the government in waste management and maintenance of public health.
      PubDate: 2022-04-12
       
  • Biowaste valorization for production of bacterial cellulose and its
           multifarious applications contributing to environmental sustainability

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      Abstract: Abstract Biowastes, an outcome of burgeoning population, urbanization, consumerism and relentless industrialization has led to degradation of the environment and became a matter of concern for the entire globe. Therefore, strategies are being adopted to enable a sustainable utilization of waste biomass and diminish the environmental burden. Waste valorization is one of the emerging concepts that results in the transformation of waste into value-added products by promoting recyclability, technologies and sustainable livelihoods. Bacterial cellulose (BC) is a naturally occurring value-added nanomaterial produced as exopolysaccharides by bacteria,  and is found abundantly in almost all types of biowastes. On account of importance of waste valorization and circular economy, this paper reviews the characteristics, structure and extraction of BC from the bacterial communities utilising different sources, e.g., municipal wastes, paper mills, animal wastes, biorefineries, agro-industrial sources, etc. It also describes the applications of BC to diverse fields while promoting environmental sustainability.
      PubDate: 2022-03-18
       
  • Microplastics in marine and aquatic habitats: sources, impact, and
           sustainable remediation approaches

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      Abstract: Plastic trash dumped into water bodies degrade over time into small fragments. These plastic fragments, which come under the category of micro-plastics (MPs), are generally 0.05–5 mm in size, and due to their small size they are frequently consumed by aquatic organisms. As a result, widespread MPs infiltration is a global concern for the aquatic environment, posing a threat to existing life forms. MPs easily bind to other toxic chemicals or metals, acting as vector for such toxic substances and introducing them into life forms. Polyethylene, polypropylene, polystyrene, and other polymers are emerging pollutants that are detrimental to all types of organisms. The main route for MPs into the aquatic ecosystems is through the flushing of urban wastewater. The current paper investigates the origin, environmental fate, and toxicity of MPs, shedding light on their sustainable remediation. Graphical abstract
      PubDate: 2022-03-15
       
  • Role of plant growth promoting microbes in managing sustainability of
           stressed agroecosystems

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      PubDate: 2022-03-14
       
  • Role of pyrolysis temperature on application dose of rice straw biochar as
           soil amendment

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      Abstract: Abstract Biochar, an emerging soil amendment is conducive to carbon sequestration as well as plant and soil health. However, its benefits vary with the type of feedstocks, pyrolysis temperature, and the rate of application in soil. Herein, the effects of pyrolysis temperature and application dose of rice straw-derived biochar on soil physico-chemical properties were investigated. In this study, biochar prepared at two pyrolysis temperatures (350 °C and 550 °C) were applied in the soil at the rate of 5%, 10%, and 20%. After 90 days of incubation (at 50% of water holding capacity), a significant increase in soil pH and loss of nitrogen (up to 80%) was observed in biochar applied soils along with enhanced availability of phosphorous (14%) and potassium (18.8 fold). The addition of biochars (derived at both the temperatures) at a dose of 20%, elevated the carbon mineralization rate. Results demonstrated the crucial role of both pyrolysis temperature and application rate in achieving optimum efficacy of rice straw-derived biochar in soil carbon mineralization. The study suggests that rice straw biochar prepared under low (350 °C) pyrolysis temperature should be applied at a lesser rate (5%) to obtain higher agronomic and environmental benefits. Whereas, a higher rate of application (10%) is advocated if the pyrolysis is performed at a higher temperature (550 °C).
      PubDate: 2022-03-13
       
  • Phycoremediation: a means for restoration of water contamination

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      Abstract: Abstract For the last few decades, environmental pollution has attained global attention as it resulted in the massive contamination of aquatic and terrestrial ecosystems. Aquatic ecosystems seem to be more prone to pollutants, as they act as a sink for pollutants, reaching through runaway water of the nearby area. Contaminants from water bodies can quickly enter the food chain through the primary producers of aquatic origin. This may lead to serious health hazards to humans and animals through biomagnification. In this scenario, it is essential to find a sustainable solution for the decontamination of the ground and surface water to maintain life on earth in a better way. Phycoremediation is an algal-based emerging technology applied to remove various pollutants in water. It is a low cost, eco-friendly and easily manageable remediation strategy. In this technique, algae are used as agents of remediation, and so far, a number of algae have been identified with high potential to detoxify various kinds of pollutants like nutrients, heavy metals, radionuclides, herbicides, pesticides, etc. Both micro and macroalgae are widely exploited to detoxify various contaminants from the water bodies. Algae are the sources of green energy, serve as a sink for CO2, and are also a rich resource of economically important components, making phycoremediation a promising technology. Even though the detailed mechanism behind the phycoremediation technique is yet to be unravelled, processes like biosorption, accumulation, degradation, volatilization, and complexation are proved to be operating in most of the species. This review analyzes the current status, various mechanisms, pros and cons and future promises of phycoremediation. The role of genetic engineering and also the nanoremediation strategies in phycoremediation are also discussed briefly.
      PubDate: 2022-03-12
       
  • Assessment and characterization of poly(3-hydroxybutyrate) accumulated by
           endophytic bacterium Exiguobacterium acetylicum BNL 103 from oleaginous
           plant Brassica napus L.

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      Abstract: Abstract Endosphere, the internal environment of plants is colonized by diverse and complex endophytic microbial communities that completely or partially pass their life events inside plants. These endogenously coexisting bacterial population of plants have been well analysed for the production of wide diversity of natural compounds including the biopolyesters, polyhydroxyalkanoates (PHAs). Oleaginous plants, the fruits and seeds of which are utilized for production and extraction of oil are no exception and harbour a large array of endophytic bacteria in their internal tissues. In this study, an attempt has been made to evaluate the prospects of the bacterial endophytes of oleaginous plant, Brassica napus L. for the biosynthesis and intracellular deposition of poly(3-hydroxybutyrate) [P(3HB)], the widely known PHA. About 82.8% of total endophytic bacterial isolates showed accumulation of P(3HB) during in vitro growth in chemically defined medium under batch cultivation. The most potent bacterium, Exiguobacterium acetylicum BNL 103 (GenBank accession number KX458037, MCC accession number 3434) endophytic to leaves of B. napus L. produced P(3HB) which accounted for about 55.4% of the dry cell mass under batch cultivation. The accumulated polyester was extracted and purified from the dry cell mass following standard methods and its identity was confirmed by the ultraviolet, Fourier-transform infrared (FTIR), proton (1H) and carbon (13C) nuclear magnetic resonance (NMR) spectroscopic analysis.
      PubDate: 2022-03-09
       
  • Butanol production by Clostridium acetobutylicum DSMZ 792 from cassava
           starch

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      Abstract: Abstract Cassava cultivation is cheap, with potential development under different climatic conditions. It is cultivated mainly in South America, Asia, and Africa. Cassava starch is an attractive feedstock, and has been employed as carbon source for production of butanol given its low cost and wide availability. In this sense, this study aimed to evaluate the production of butanol by Clostridium acetobutylicum DSMZ 792 using cassava starch as a substrate, applying Design of Experiments (DoE). Key parameters reported in the literature, such as pH and substrate concentration, were used in the evaluation trials by DoE using Rotatable Central Composite Design (RCCD) on butanol production during fermentation of cassava starch. This evaluation employed RCCD, which is a factorial scheme of treatment (22) considering four factorial design points (T1-T4), four axial points (T5-T8), and three replications on the central points (T9-T11), totaling 11 experiments. Fermentation was conducted in batch mode in 500 mL flasks, containing effective reaction volume of 300 mL. Concentrations of butanol, acetic and butyric acids were separated and analyzed by High-Performance Liquid Chromatography (HPLC) using a column (300 mm × 7.8 mm). Data were collected and analyzed using Class-VP software. The RCCD indicated that the highest butanol production is achieved in tests performed with higher concentration of the glucose, i.e., 50.0 g L−1 and with initial pH 5.7, resulting in a butanol concentration of 4.37 g L−1. The results showed that butanol production was dependent on butyric acid re-assimilation. DoE is a powerful tool for obtaining the optimum butanol concentration for determined operation condition.
      PubDate: 2022-03-06
       
  • In vitro demonstration of nitrogenase activity and methanogenesis in
           non-heterocystous filamentous and unicellular cyanobacteria isolated from
           estuarine waters

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      Abstract: Abstract Diazotrophic activities were monitored in vitro in three non-heterocystous cyanobacteria belonging to families Leptolyngbyaceae, Merismopediaceae, and Chroococcaceae. The nitrogenase activity was determined chromatographically using the acetylene reduction assay. The study yielded unexpected results as these were also found to generate methane (CH4). The highest observed rate of nitrogen (N2) fixation by Leptolyngbya sp. colony was 10.17 ± 2.86 µmole cm−2 h−1 or 35.08 ± 3.22 nmole mg−1 dry-wt h−1; Synechocystis sp. culture exhibited a value of 8.60 ± 0.28 µmole ml−1 h−1 or 1.76 ± 0.37 nmole cell−1 h−1; and Gloeocapsa sp. culture demonstrated 6.39 ± 0.95 µmole ml−1 h−1 or 0.29 ± 0.53 nmole cell−1 h−1 of N2 fixed. Highest CH4 production from the three cultures was 235.81 ± 17.19 µmole cm−2 h1 or 61.23 ± 13.08 nmole mg−1 dry-wt h−1 (Leptolyngbya sp.); 55.09 ± 9.66 µmole ml−1 h−1 or 11.29 ± 1.22 nmole cell−1 h−1 (Synechocystis sp.), and 39.85 ± 4.05 µmole ml−1 h−1 or 1.81 ± 0.46 nmole cell−1 h−1 (Gloeocapsa sp.). The interdependency of the N2 fixation and CH4 generation was plotted as a linear regression: Y = 6.4115x + 7.5132, p << 0.05, r2 = 0.9842 proving the emission of CH4 from cultures of N2 fixing cyanobacteria to be statistically significant as well.
      PubDate: 2022-02-25
      DOI: 10.1007/s42398-022-00216-x
       
  • Microbial diversity analysis of Hudiara Drain wastewater using
           culture-independent and culture-dependent approaches

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      Abstract: Abstract Hudaira Drain of Pakistan is one of the largest storm water drains which is a potential threat to the environment and biodiversity. It is considered as the second largest water polluting body in Pakistan. The major polluting contributors are toxic industrial wastes, chemical fertilizers and poultry or animal waste. The objective of this study was to analyze the microbial diversity of wastewater from Hudiara Drain using culture-independent and culture-dependent techniques. For culture-independent analysis, the 16S rRNA gene-based Illumina sequencing technique was used. Metagenomic sequence analysis revealed a total of 20 different phyla in the source drain water samples. Bacterial phyla Actinobacteria, Proteobacteria, Bacteroidetes, Firmicutes, Acidobacteria, Chloroflexi, Planctomycetes, and Fusobacteria and archaeal phylum Thaumarchaeota were commonly identified from all the wastewater samples. A total of 282 genera of bacteria and archaea were identified in this study, with Bacillus, Nitrospira, Nitrososphaera, Gemmatimonas, Pseudomonas, Stenotrophomonas, Myxococcus, Azospirilum, Skermanella, Nitrososphaera, Pontibacter and Aquicella being the dominant genera. Using culture-dependent techniques, 32 bacterial strains were identified and characterized for heavy metal and antibiotic resistance. The common genera were Bacillus, Aeromonas and Enterobacter. These results suggest that the microbial diversity from Hudiara Drain wastewater samples is a potential source of clinically and industrially important bacterial and archaeal strains.
      PubDate: 2022-02-14
      DOI: 10.1007/s42398-022-00215-y
       
  • The impact of the COVID-19 lockdown on global air quality: A review

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      Abstract: Abstract The coronavirus disease 2019 (COVID-19) was declared a pandemic by the World Health Organization (WHO) on March 11, 2020. As a preventive measure, the majority of countries adopted partial or complete lockdown to fight the novel coronavirus. The lockdown was considered the most effective tool to break the spread of the coronavirus infection worldwide. Although lockdown damaged national economies, it has given a new dimension and opportunity to reduce environmental contamination, especially air pollution. In this study, we reviewed, analyzed and discussed the available recent literature and highlighted the impact of lockdown on the level of prominent air pollutants and consequent effects on air quality. The levels of air contaminants like nitrogen dioxide (NO2), sulphur dioxide (SO2), carbon monoxide (CO), and particulate matter (PM) decreased globally compared to levels in the past few decades. In many megacities of the world, the concentration of PM and NO2 declined by > 60% during the lockdown period. The air quality index (AQI) also improved substantially throughout the world during the lockdown. Overall, the air quality of many urban areas improved slightly to significantly during the lockdown period. It has been observed that COVID-19 transmission and mortality rate also decreased in correlation to reduced pollution level in many cities.
      PubDate: 2022-02-07
      DOI: 10.1007/s42398-021-00213-6
       
  • Development of whey and turmeric based functional synbiotic product

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      Abstract: Abstract Probiotics have gained increased focus in recent years for the formulation of functional foods. On another note, valorisation of food by-products such as whey which causes serious environmental pollution into whey protein concentrate and associated foods of health benefits has been on the rise. This study was designed with the intent of contriving a novel, synbiotic whey-based product with the innovative employment of cereals (oats and wheat bran) as prebiotics. Lactobacillus plantarum was adopted as probiotic microorganism based on its superlative performance in experimental tests and WPC-70 (70% Whey Protein Concentrate) was taken as substrate. The proteolytic potential of the probiotic strain was analyzed by o-phthaldialdehyde (OPA) test and found to be 101.5 and 96.8 µg/ml for wheat bran and oat-based products, with subsequent affirmation by SDS-PAGE. Starter culture concentration and fermentation time were optimized on the basis of growth activity, as indicated by viable count and pH. Turmeric juice was incorporated for the improvement of the organoleptic properties and was found to possess no inhibitory effect on the probiotic at that concentration. Refrigerated storage for 25 days fostered a reduction in pH and cell viability (p ≤ 0.05).
      PubDate: 2021-12-09
      DOI: 10.1007/s42398-021-00211-8
       
  • Correction to: Improving the performance of dye‑sensitized solar cells
           using nanoparticles and a dye produced by an Antarctic bacterium

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      Abstract: A correction to this paper has been published: https://doi.org/10.1007/s42398-021-00177-7
      PubDate: 2021-12-01
      DOI: 10.1007/s42398-021-00177-7
       
  • Antimicrobial resistant bacteria in poultry excrement sold as manure in
           local markets in Benin

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      Abstract: Enterobacteria are host bacteria found in the gut of all warm-blooded animals. Many of these can be found in poultry faeces and can cause zoonotic diseases. This study was aimed to characterize Enterobacteria other than Salmonella from faeces of poultry sold in local markets in southern Benin. Fifteen markets in three cities were selected for sampling in Southern Benin. A total of 207 faecal samples were obtained from Abomey-Calavi, Cotonou and Ouidah. ‘’Association Française de NORmalisation’’ (AFNOR) standard (NF U: 47–100) was used for bacteriological analysis. The Api 20E Gallery was used for the identification of bacteria. Antibiogram was performed using antibiotics of different families in order to check the resistance pattern of the isolates. The resistance genes that were targeted for amplification by Polymerase Chain Reaction (PCR) were blaCTX-M1, blaCTX-M2, blaCTX-M9, blaCTX-M15 and blaSHV. Results showed that Escherichia coli was the most identified isolates (74.11%), followed by Citrobacter diversus (7.06%) and Enterobacter cloacae (5.88%). The identified bacteria showed resistance to cephalosporins, carbapenems, aminoglycosides and quinolones. The highest resistances observed were for quinolones and cephalosporins. The strains carried the blaSHV resistance gene (21.57%) as well as the fimH virulence gene (41.57%). As conclusion, the detection of multi–resistant isolates is a concern about the risks faced by poultry handlers since they are in constant contact with animals and animal faeces. Public health is also emphasized since majority of Beninese populations are consumers of meat. Graphic abstract
      PubDate: 2021-12-01
      DOI: 10.1007/s42398-021-00171-z
       
  • Alternate states dominate the bacterial endophyte community of a tropical
           tree

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      Abstract: Abstract Little is known about how bacterial endophyte communities may vary from one tree to another of the same species. We sampled nine standardized replicates from the green stems of an ethnomedicinal tropical tree, Santiria apiculata, in a Malaysian rainforest, to investigate endophyte variation from one plant to another. DNA was extracted axenically from the inner stem, and PCR-amplified for the 16s rRNA gene, followed by Illumina HiSeq sequencing. For comparison, the rhizosphere soil of the same trees was also sampled, and the 16s rRNA genes sequenced. Santiria stems contained a diverse community of more than 1100 Operational Taxonomic Units (OTUs), which partitioned clearly into two community types. One community (here dubbed ‘rhizosphere-like’) resembled the rhizosphere soil in its major OTUs, while the other (‘rhizosphere-unlike’) was more distinct and dominated by the genus Bacillus. Nestedness analysis confirmed that both the rhizosphere-like and the rhizosphere-unlike stem communities tended to be a subset of the rhizosphere community. The β-nearest taxon index (βNTI) analysis revealed that the stem communities were dominated by stochastic processes, whereas deterministic processes with homogenizing selection dominated the rhizosphere soil. It appears that the endophyte community in Santiria may be dominated by colonization and priority effects, and it may derive from the rhizosphere community. The potential for alternate steady states within the endophyte community should be considered as a possible influence on plant growth and ecology.
      PubDate: 2021-12-01
      DOI: 10.1007/s42398-021-00198-2
       
  • Valorisation of agroindustrial-residues for production of a potent
           thrombolytic protease from Aspergillus terreus SH72

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      Abstract: Abstract Cardiovascular diseases (CVDs) are the principle cause of indisposition and global fatality. Under certain pathophysiological conditions, formation of fibrin clot causes obstruction in normal blood flow and leads to thrombosis. Excessive treatment cost and side effects of the available thromobolytics prompt the researchers to investigate potentially superior, economic and more acceptable therapeutics for thrombosis. Current study reports cost-effective production of an efficacious fibrinolytic protease (fibpro) from a newly isolated fungal strain Aspergillus terreus SH72 using low-cost agricultural residues as substrates. The fibpro showed fairly good substrate specificity towards fibrin. Molasses as carbon source supported maximum yield of fibpro (168.23 U/mL), however, substantial enzyme titre was produced on other agro-residues i.e. malt (151.15 U/mL), wheat bran (147.78 U/mL), banana leaves (145.20 U/mL), corncob (138.86 U/mL), bamboo leaves (138.07 U/mL), and rice husk (134.10 U/mL) which was higher than that in control i.e. glucose as carbon source (126.77 U/mL). Similarly, several agro-based nitrogen sources were utilized by A. terreus SH72 for producing adequate fibpro yield i.e. sesame cake (196.32 U/mL), spent grains (194.34 U/mL), coconut seed cake (193.95 U/mL), soyameal (193.15 U/mL), malt extract, (191.96 U/mL), ground nut cake (184.83 U/mL), and others. Most significant process variables (molasses, sesame cake, KH2PO4, and incubation time) earmarked based on Plackett–Burman designed experiments were optimized by design of experiment (DoE) based on response surface methodology to attain yield enhancement of 2.03-fold.
      PubDate: 2021-12-01
      DOI: 10.1007/s42398-021-00181-x
       
  • Improvement in growth and yield of strawberry (Fragaria × ananassa
           Duch.) by mulch colour

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      Abstract: Abstract Mulching is practiced in strawberry (Fragaria × ananassa Duch.) to conserve water, control weeds, and keep fruit clean, resultantly improving yield and quality. The most commonly used plastic mulch colour is black, but coloured mulch is reported to perform better than black polyethylene mulch. The present study was conducted over a period of three years to see the effect of different coloured polyethylene mulches on performance of strawberry under hot dry subtropical climatic conditions prevailing at Lucknow region of Uttar Pradesh, India. The experiment was laid out in randomized block design (RBD) with seven treatment combinations replicated four times. Strawberry performance for most of the physico-chemical parameters was recorded best under yellow polyethylene mulch followed by black polyethylene mulch over control. Vegetative growth, fruit yield and berry size was observed significantly better in yellow than black polyethylene mulch. However, fruit quality in respect of sugars, vitamin A and anthocyanin content was found superior in black polyethylene mulch. The inductive resonance effect of green and yellow light absorption by plant under yellow polyethylene mulch appears to have a role in enhancing photosynthesis resulting in better vegetative growth, fruit quality and higher yield of strawberry.
      PubDate: 2021-12-01
      DOI: 10.1007/s42398-021-00167-9
       
  • COVID-19 and environment: a poignant reminder of sustainability in the new
           normal

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      Abstract: The nexus of COVID-19 and environment is conspicuously deep-rooted. The roles of environmental factors in the origin, transmission and spread of COVID-19 and the mutual impact of the pandemic on the global environment have been the two perspectives to view this nexus. The present paper attempts to systematically review the existing literature to understand and explore the linkages of COVID-19 with environment and proposes conceptual frameworks to underline this nexus. Our study indicates a critical role of meteorological factors, ambient air pollutants and wastewater in severe acute respiratory syndrome coronavirus 2(SARS-CoV-2) transmission-spread dynamics. The study also focuses on the direct and indirect impacts of COVID-19 on the regional and global environment. Most of the indirect environmental effects of COVID-19 were attributed to global human confinement that resulted from the implementation of the pandemic containment measures. This worldwide anthropogenic ‘pause’ sent ripples to all environmental compartments and presented a unique test bed to identify anthropogenic impacts on the earth’s natural systems. The review further addresses emerging sustainability challenges in the new normal and their potential solutions. The situation warrants critical attention to the environment-COVID-19 nexus and innovative sustainable practices to address the ramifications of short- and long-term environmental impacts of the COVID-19 pandemic. Graphical abstract
      PubDate: 2021-09-24
      DOI: 10.1007/s42398-021-00207-4
       
 
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