scholarly journals Assessment of Toxicity of Coragen, an Insecticide, on Aquatic Ecosystem Using Hydra as a Model

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Borgave Seema Sachin
Keyword(s):  
Aquatic Ecosystem ◽  
Aquatic Ecosystems ◽  
Large Scale ◽  
Environmental Issues ◽  
Model System ◽  
Aquatic Species ◽  
Long Run ◽  
Low Concentrations ◽  
Ability To Regenerate ◽  
Harmful Effects

Overuse of insecticides, without analyzing their harmful effects, can cause serious environmental issues. Coragen is a commonly used insecticide due to its broad range activity. In spite of enormous use, there are hardly any reports on the effects of coragen on non-target aquatic species and thus the environmental risk of coragen to aquatic ecosystem is underestimated. The present study was carried out to evaluate the potential risk of coragen on the water bodies and the life therein using hy dra, a fresh water simple diploblastic invertebrate, as the model system. Coragen was found to reduce the life expectancy of hydra along with the reduced ability to regenerate at various tried doses. The present study thus suggests precocious use of coragen due to its harmful effects on aquatic animals at v ery low concentrations also. The continued overuse of coragen may disturb the aquatic ecosystems at a large scale in long run.

scholarly journals Geodiversity primarily shapes large-scale limnology and aquatic species distribution in the northern Neotropics

2021 ◽  
Author(s):  
Laura Anahí Macario-González ◽  
Sergio Cohuo ◽  
Philipp Hoelzmann ◽  
Liseth Pérez ◽  
Manuel Elías-Gutiérrez ◽  
...  
Keyword(s):  
Aquatic Ecosystem ◽  
Structural Equation ◽  
Large Scale ◽  
Principal Component ◽  
Neotropical Region ◽  
Biological Data ◽  
Ecosystem Structure ◽  
Aquatic Species ◽  
Southern Mexico ◽  
Geochemical Properties

Abstract. Geodiversity is recognized as one of the most important drivers of ecosystems characteristics and biodiversity globally. However, in the northern Neotropics, the contribution of highly diverse landscapes and geological history in structuring large-scale patterns of limnology and aquatic species associations remain poorly understood. We evaluate the interaction between geodiversity, limnology and freshwater ostracode assemblages to explore drivers of aquatic ecosystem structure from southern Mexico to Nicaragua. Cluster analysis based on geological, limnological, sedimentological and mineralogical characteristics of 76 aquatic ecosystems (karst, volcanic, tectonic) reveal two main limnological regions: (1) Karst terraces from the Yucatán Peninsula and northern Guatemala, and (2) volcanic terrains of the Guatemalan highlands, El Salvador and Honduras mid-elevations, and Nicaraguan lowlands. In addition, seven limnological subregions were recognized, attesting high limnological heterogeneity. Principal Component Analysis identifies water ionic and sediment composition as most influential for aquatic ecosystem classification and given their source of formation, we recognized geology as the fundamental determinant for large-scale limnological patterns. Multiparametric analyses based on biological data revealed that species association represent disjunct faunas. For instance, five species associations are closely related to limnological regions. Structural equation modelling reveals a strong influence of limnology and elevation on the biological composition, but geodiversity resulted in the most important driver. The confinement of species associations is attributed to regional lake geochemistry. We deduce a linear, continuous and primary influence of geodiversity for limnological structure, geochemical properties and aquatic biological composition in Lakes of the northern Neotropical region.

Immunogold labeling of CMP-KDO synthetase produced by recombinant E. Coli cells

1987 ◽  
Vol 45 ◽  
pp. 924-925
Author(s):  
F. A. Durum ◽  
R. G. Goldman ◽  
T. J. Bolling ◽  
M. F. Miller
Keyword(s):  
Inclusion Bodies ◽  
Large Scale ◽  
Recombinant Dna ◽  
Test System ◽  
Cell Protein ◽  
Gram Negative Bacteria ◽  
Cytoplasmic Inclusions ◽  
Isolation And Purification ◽  
E Coli ◽  
Low Concentrations

CMP-KDO synthetase (CKS) is an enzyme which plays a key role in the synthesis of LPS, an outer membrane component unique to gram negative bacteria. CKS activates KDO to CMP-KDO for incorporation into LPS. The enzyme is normally present in low concentrations (0.02% of total cell protein) which makes it difficult to perform large scale isolation and purification. Recently, the gene for CKS from E. coli was cloned and various recombinant DNA constructs overproducing CKS several thousandfold (unpublished data) were derived. Interestingly, no cytoplasmic inclusions of overproduced CKS were observed by EM (Fig. 1) which is in contrast to other reports of large proteinaceous inclusion bodies in various overproducing recombinant strains. The present immunocytochemical study was undertaken to localize CKS in these cells.Immune labeling conditions were first optimized using a previously described cell-free test system. Briefly, this involves soaking small blocks of polymerized bovine serum albumin in purified CKS antigen and subjecting them to various fixation, embedding and immunochemical conditions.

Evaluation of Landfill Effects on Aquatic Ecosystems Using Benthic Macro-Invertebrates

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2365-2367
Author(s):  
L. Cingolani ◽  
A. Morosi
Keyword(s):  
Aquatic Ecosystem ◽  
Aquatic Ecosystems ◽  
Drainage Area ◽  
Taxonomic Level ◽  
Significant Difference ◽  
Downstream Communities

The aim of this work was to verify the effectiveness of benthic macro-invertebrate observation in providing information about the effects of a landfill on an aquatic ecosystem. A significant difference between upstream and downstream communities from landfill drainage area was found. The adopted taxonomic level was sufficient to reach our object.

Drama and Environment: Joining Forces to Engage Children and Young People in Environmental Education

2013 ◽  
Vol 29 (2) ◽  
pp. 182-201 ◽  
Author(s):  
David J. Curtis ◽  
Mark Howden ◽  
Fran Curtis ◽  
Ian McColm ◽  
Juliet Scrine ◽  
...  
Keyword(s):  
Environmental Education ◽  
Case Studies ◽  
Large Scale ◽  
Environmental Issues ◽  
Contemporary Society ◽  
Children And Young People ◽  
School Based ◽  
Qualitative Evidence ◽  
Theatre Company ◽  
Theatre In Education

AbstractEngaging and exciting students about the environment remains a challenge in contemporary society, even while objective measures show the rapid state of the world's environment declining. To illuminate the integration of drama and environmental education as a means of engaging students in environmental issues, the work of performance companies Evergreen Theatre, Leapfish and Eaton Gorge Theatre Company, the ecological oratorio Plague and the Moonflower, and a school-based trial of play-building were examined through survey data and participant observations. These case studies employed drama in different ways — theatre-in-education, play-building, and large-scale performance event. The four case studies provide quantitative and qualitative evidence for drama-based activities leading to an improvement in knowledge about the environment and understandings about the consequences of one's actions. In observing and participating in these case studies, we reflect that drama is a means of synthesising and presenting scientific research in ways that are creative and multi-layered, and which excite students, helping maintain their attention and facilitating their engagement.

scholarly journals ENVIRONMENTAL PROBLEMS AND ENVIRONMENTAL VALUES

2015 ◽  
Vol 3 (9SE) ◽  
pp. 1-3
Author(s):  
Mamta Barman
Keyword(s):  
Environmental Issues ◽  
Environmental Values ◽  
Modern World ◽  
Global Level ◽  
School Students ◽  
Environmental Value ◽  
Nature Awareness ◽  
Sample Age ◽  
Age Range ◽  
Harmful Effects

The real wealth of any nation and any region lies in the wellbeing of its people. The three main problems in the world, are known as three-P-Population, Poverty, and Pollution. Pollution is the main problem of the modern world. The technological inventions and progress has over powered nature, it has also resulted in the thoughtless exploitation of nature. Awareness by educating everyone, to value the nature and maintain the natural environment are important need. A study was conducted a 50 private and govt. female school students to measure the environmental values. Environmental Value Test (Shrivastav& Dubey, 1995) was used to assess the environmental value of the sample age range varied from 16-17 yrs. Findings of the study reveal that there is degree of high environmental value among both urban groups. Eco-club, Vanmahotsava, Exhibitions are popular means of creating awareness about environment. The need of the hour is to discuss environmental issues as our environmental issues, at global level as a sense of duty. To protect the environment from the adverse effects of pollution, many nations worldwide have enacted legislation to regulate various types of pollution to mitigate their harmful effects.

scholarly journals GENRE AND STYLISTIC DIVERSITY OF ECOLOGICAL PUBLICISM OF KYRGYZSTANA

2020 ◽  
Vol 7 (5(74)) ◽  
pp. 15-20
Author(s):  
N. K. Dzhumagazieva
Keyword(s):  
Large Scale ◽  
Environmental Issues ◽  
Environmental Communication ◽  
Theoretical Research ◽  
Practical Significance ◽  
Synthesis Process ◽  
Cultural Issues ◽  
Cultural Traditions ◽  
Environmental Journalism ◽  
Man And Nature

The article discusses the features of the genres of environmental journalism in the aspect of the global problems of understanding the interaction of man and nature. In the modern period of the development of multimedia technologies and convergent journalism, journalism genres are experiencing “reboots”, therefore, the definition of genre identity and the further implementation of such an important topic as ecology in journalistic materials seems relevant.Journalism is constantly transforming, reflecting changes in society. Understanding her contemporary experience is one of the tasks of the methodology of the creative process. Journalism synthesizes theoretical research methods and ways of artistic reflection of reality. This synthesis process is especially evident in the way typification and individualization are carried out in society in terms of the development of environmental consciousness. In this regard, journalism and journalism are able to establish and develop environmental communication, the basis of which is the real relationship between man and nature, as well as the reflection of social reality, public opinion on informational issues related to environmental (environmental) issues.The journalism activism of Kyrgyzstan has a large-scale experience of reflecting environmental issues, which is associated with a value and cultural orientation, the foundations of which are laid in the socio-cultural traditions of the Kyrgyz people and are most vividly embodied in the work of the great Chingiz Aitmatov. This article attempts to typify the main genres and forms of journalism, reflecting environmental issues. The study allows us to conclude that at the present stage, definitions of journalism genres require transformation in the aspect of both purely national and general cultural issues. The practical significance lies in the inclusion in the list of basic disciplines of journalism faculties of the special course "Genres of Contemporary Environmental Journalism", which will make the learning process more substantive, relevant and relevant in the practice of modern media

scholarly journals Low-cost Large Scale Vermicompost Unit

2021 ◽  
Vol 2115 (1) ◽  
pp. 012026
Author(s):  
Sonam Solanki ◽  
Gunendra Mahore
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Small Scale ◽  
Scale Production ◽  
Key Innovation ◽  
Main Challenge ◽  
Long Run ◽  
Large Scale Production ◽  
Term Maintenance

Abstract In the current process of producing vermicompost on a large-scale, the main challenge is to keep the worms alive. This is achieved by maintaining temperature and moisture in their living medium. It is a difficult task to maintain these parameters throughout the process. Currently, this is achieved by building infrastructure but this method requires a large initial investment and long-run maintenance. Also, these methods are limited to small-scale production. For large-scale production, a unit is developed which utilises natural airflow with water and automation. The main aim of this unit is to provide favourable conditions to worms in large-scale production with very low investment and minimum maintenance in long term. The key innovation of this research is that the technology used in the unit should be practical and easy to adopt by small farmers. For long-term maintenance of the technology lesser number of parts are used.

scholarly journals Climate Dialog, Climate Action: Can Democracy Do the Job?

2021 ◽  
Author(s):  
Fred Young Phillips ◽  
LaVonne Reimer ◽  
Rebecca Turner
Keyword(s):  
Large Scale ◽  
Global Climate ◽  
Environmental Issues ◽  
Top Down ◽  
Bottom Up ◽  
Psychological Mechanisms ◽  
Ipcc Report ◽  
Climate Action

The latest IPCC report forcefully states that immediate, decisive, and large-scale actions are needed to avert climate catastrophe. This essay presumes that democratic governments are best and most desirably positioned to take these actions. Yet in the countries most pivotal to global climate, significant voting blocs are uninterested in environmental issues. The essay urges adding bottom-up dialog between environmental and anti-environmental voters, to current and future top-down technocratic “solutions.” To make this combination result in a unified pro-environment electorate, we must understand: religious objections to environmentalism; the capital-vs.-knowledge strife that slows polluting corporations’ green transitions; and the psychological mechanisms that can make inter-group dialog fruitful.

Supplementary material to "Geodiversity primarily shapes large-scale limnology and aquatic species distribution in the northern Neotropics"

2021 ◽  
Author(s):  
Laura Anahí Macario-González ◽  
Sergio Cohuo ◽  
Philipp Hoelzmann ◽  
Liseth Pérez ◽  
Manuel Elías-Gutiérrez ◽  
...  
Keyword(s):  
Species Distribution ◽  
Large Scale ◽  
Aquatic Species ◽  
Supplementary Material
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