scholarly journals Eco-environmental Changes of Wetland Resources of Hakaluki haor in Bangladesh Using GIS Technology

2013 ◽  
Vol 01 (01) ◽  
Author(s):  
Mohiuddin ASM Hossain ST
Keyword(s):  
Environmental Changes ◽  
Gis Technology ◽  
Wetland Resources

scholarly journals Eco-Environmental Changes Of Hail Haor Wetland Resources Under Sylhet Basin Of Bangladesh Due To Sedimentation: A Gis Approach

2013 ◽  
Vol 39 (1) ◽  
pp. 125-128 ◽  
Author(s):  
MJ Uddin ◽  
ASM Mohiuddin ◽  
ST Hossain
Keyword(s):  
Environmental Changes ◽  
Wetland Resources

J. Asiat. Soc. Bangladesh, Sci. 39(1): 125-128, June 2013 DOI: http://dx.doi.org/10.3329/jasbs.v39i1.16041

scholarly journals Digital technologies in an environmental monitoring system at solid mineral deposits

2020 ◽  
Vol 1 (2) ◽  
pp. 97-102
Author(s):  
Ol’ga Mikhailovna GUMAN ◽  
Keyword(s):  
Environmental Monitoring ◽  
Environmental Changes ◽  
Digital Technologies ◽  
Mineral Deposits ◽  
Gis Technology ◽  
Distributed Information ◽  
Software Products ◽  
Automatic Mode ◽  
Environmental Monitoring System ◽  
Spatially Distributed

The relevance of research is determined by the fact that in modern conditions a significant number of new deposits of solid minerals are being developed, for which comprehensive environmental studies are being carried out. As part of this work, there is a need for monitoring observations on the state and environmental changes based on digital technologies, the use of which in solid mineral deposits is grounded on modern maps using GIS technologies; it is assumed that the equipment will be used in automatic mode; the forecast is complex, multi-media is based on modern software products, processing should be areal and in time behaviour – all this will make management decisions more focused. Purpose of the work: to analyze the features of the use of digital technologies in organizing and conducting monitoring of the natural environment in the development of solid mineral deposits. Research methodology. In solid mineral deposits, environmental monitoring begins with mapping using GIS technology, operational observations; spatially distributed information is analyzed and visualized, area and time models appear, and a forecast is made for the time the field is developed and liquidated. Digital technology is used at each stage of monitoring. Results. An algorithm and a program for creating digital models in solid mineral deposits are developed taking into account the processes of changing environmental components in space and time.

Spatial and temporal characterization of land-use in the Buffalo National River Watershed

1999 ◽  
Vol 26 (2) ◽  
pp. 94-101 ◽  
Author(s):  
H.D. SCOTT ◽  
T.H. UDOUJ
Keyword(s):  
Land Use ◽  
Environmental Changes ◽  
Average Rate ◽  
Land Use Changes ◽  
Gis Technology ◽  
Buffer Zones ◽  
River Watershed ◽  
Buffalo River ◽  
Forest Lands

Today there is much concern about the potential contamination, overuse and development of scenic rivers in more or less pristine environments. The objective of this work was to quantify the spatial and temporal changes in land-use occurring in a watershed draining a nationally protected river. The Buffalo National River of Arkansas was chosen to serve as an example of how Geographic Information System (GIS) technology can rapidly assess the environmental changes that have occurred within a watershed. GIS was used to develop a spatial database of the watershed and to describe differences in land-use data from five sample years during 1965–92. Over this time span, approximately 40 000 ha of forest were lost and converted primarily to pasture. The average rate of loss of forest was 1480 ha/yr. During this same period, the average rate of gain of pasture was 1381 ha/yr. Buffer analyses showed that pasture increased at a higher percentage rate in the buffer zones surrounding the Buffalo River than in the tributaries of the Buffalo River, and a large proportion of the increase was on higher slopes. Land-use changes were dynamic with a greater area converted to pasture than area of pasture converted to forest in the watershed. The cleared forest lands were mostly near older pastures and along streams. The reforested lands tended to occur in the more isolated areas. The Buffalo River Watershed has undergone changes in land-use that may have had impact on the water quality of the region.

Socio-economic values of wetland resources around Lake Manyara, Tanzania: assessment of environmental threats and local community awareness on environmental degradation and their effects

1970 ◽  
Vol 4 ◽  
pp. 83-101 ◽  
Author(s):  
HE Nonga ◽  
RH Mdegela ◽  
E Lie ◽  
M Sandvik ◽  
JU Skaare
Keyword(s):  
Ecosystem Services ◽  
Environmental Degradation ◽  
Local Community ◽  
Environmental Changes ◽  
Lake Basin ◽  
Economic Values ◽  
Environmental Threats ◽  
Community Awareness ◽  
The Government ◽  
Wetland Resources

Understanding local people’s socio-economic values of wetlands and traditional mechanisms of managing natural resources forms the basis of conserving them. Wetlands have frequently been developed for short-term economic gains that destroy their ecological values and environmental services in the long term. A study was carried out to assess socio-economic values of the wetland resources, environmental threats around Lake Manyara and local community awareness on causes of environmental changes, degradation in the wetlands and their effects using 80 respondents. Field surveys, interviews, questionnaires and direct observation were used in data collection. It was found that local community was aware on the ecosystem services accrued from the wetlands which were unsustainably used. However, environmental degradation due to unsustainable agriculture, overgrazing, deforestation, urbanization and mining was rampant which had resulted to soil erosion, reduced water availability, wildlife mortality and frequent dry up of Lake Manyara and rivers. In order to protect the lake basin; controlled human activities, land use and water resources within the catchment are to be done in cooperation between the government departments, local authorities and the general local community around. Key words: Ecosystem services; rivers; Lake Manyara; wetland; agriculture DOI: 10.3126/jowe.v4i0.4153Journal of Wetlands Ecology, (2010) Vol. 4, pp 83-101

Linking transcription, RNA polymerase II elongation and alternative splicing

2020 ◽  
Vol 477 (16) ◽  
pp. 3091-3104 ◽  
Author(s):  
Luciana E. Giono ◽  
Alberto R. Kornblihtt
Keyword(s):  
Gene Expression ◽  
Alternative Splicing ◽  
Rna Polymerase Ii ◽  
Environmental Changes ◽  
Transcription Elongation ◽  
Single Gene ◽  
Regulation Of Gene Expression ◽  
Regulation Of Transcription ◽  
Stepping Stones ◽  
Eukaryotic Transcription

Gene expression is an intricately regulated process that is at the basis of cell differentiation, the maintenance of cell identity and the cellular responses to environmental changes. Alternative splicing, the process by which multiple functionally distinct transcripts are generated from a single gene, is one of the main mechanisms that contribute to expand the coding capacity of genomes and help explain the level of complexity achieved by higher organisms. Eukaryotic transcription is subject to multiple layers of regulation both intrinsic — such as promoter structure — and dynamic, allowing the cell to respond to internal and external signals. Similarly, alternative splicing choices are affected by all of these aspects, mainly through the regulation of transcription elongation, making it a regulatory knob on a par with the regulation of gene expression levels. This review aims to recapitulate some of the history and stepping-stones that led to the paradigms held today about transcription and splicing regulation, with major focus on transcription elongation and its effect on alternative splicing.

Seeking to uncover biology's chemical roots

2019 ◽  
Vol 3 (5) ◽  
pp. 435-443 ◽  
Author(s):  
Addy Pross
Keyword(s):  
Environmental Changes ◽  
Biological Systems ◽  
Significant Development ◽  
The Road ◽  
Physical Chemical ◽  
Systems Chemistry ◽  
Biological World ◽  
Inanimate Matter ◽  
The Origin Of Life ◽  
Opening Up

Despite the considerable advances in molecular biology over the past several decades, the nature of the physical–chemical process by which inanimate matter become transformed into simplest life remains elusive. In this review, we describe recent advances in a relatively new area of chemistry, systems chemistry, which attempts to uncover the physical–chemical principles underlying that remarkable transformation. A significant development has been the discovery that within the space of chemical potentiality there exists a largely unexplored kinetic domain which could be termed dynamic kinetic chemistry. Our analysis suggests that all biological systems and associated sub-systems belong to this distinct domain, thereby facilitating the placement of biological systems within a coherent physical/chemical framework. That discovery offers new insights into the origin of life process, as well as opening the door toward the preparation of active materials able to self-heal, adapt to environmental changes, even communicate, mimicking what transpires routinely in the biological world. The road to simplest proto-life appears to be opening up.

Holocene diatom assemblages from Dunderbukhta sediments, West Svalbard

2019 ◽  
pp. 242-245
Author(s):  
Ksenya V. Poleshchuk ◽  
Zinaida V. Pushina ◽  
Sergey R. Verkulich
Keyword(s):  
Environmental Changes ◽  
Ecological Groups ◽  
Diatom Assemblages ◽  
Diatom Analysis ◽  
Diatom Flora ◽  
Sediment Samples ◽  
Ecological Zones ◽  
Middle Holocene ◽  
Temperature Trends

The diatom analysis results of sediment samples from Dunderbukta area (Wedel Jarlsberg Land, West Svalbard) are presented in this paper. The diatom flora consists of four ecological groups, which ratio indicates three ecological zones. These zones show environmental changes of the area in early–middle Holocene that is demonstrating periods of regression and temperature trends.

Implementation the GIS technology to the control system of rational use of forest resources in Mykolaiv re-gion

2015 ◽  
Vol 0 (1) ◽  
Author(s):  
Viktor L. Tymchenko ◽  
Olena L. Hirzheva ◽  
Inna V. Tymchenko ◽  
Maryna A. Kyrylchuk
Keyword(s):  
Control System ◽  
Forest Resources ◽  
Gis Technology ◽  
Rational Use

DIVERSITY OF FISH LARVAE AROUND THE ESTUARY OF THE BANYUASIN RIVER, SOUTH SUMATERA PROVINCE

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Moh. Rasyid Ridho ◽  
Enggar Patriono ◽  
Sarno Sarno ◽  
Sahira Wirda
Keyword(s):  
Initial Phase ◽  
Sampling Method ◽  
Environmental Changes ◽  
Negative Impact ◽  
Fish Larvae ◽  
River Estuary ◽  
Sampling Technique ◽  
Critical Phase ◽  
Morisita Index ◽  
Index Value

The initial phase of the fish life cycle is a critical phase associated with high mortality due to sensitivity to predators, food availability, and also environmental changes that occur in nature. Disruption of the initial stages of fish life has a negative impact on fish populations. Until now there has been no information about fish larvae around the Banyuasin River Estuary. Therefore, research is needed on the diversity of fish larvae around the Banyuasin River Estuary, South Sumatra Province. This research were used purposive sampling method, sampling technique in the form of Cruise Track Design with continuous parallel survey trajectory. Based on the results of the study found as many as 10 families consisting of 1483 individuals of fish larvae in March and 1013 individuals of fish larvae in May consisting of Engraulidae 1,601 individuals of fish larvae, Mungiloidei as many as 109 individuals, Leiognathidae 50 individuals, Chanidae 453 individuals, Scatophagidae 20 individuals , Belonidae 39 individuals, Gobioididae 5 individuals, Chandidae 183 individuals, Syngnatihidae 6 individuals, and Gobiidae 30 individuals fish larvae. The index value of fish larvae diversity is classified as medium category (March 1.02 and May 1.12), Morisita index shows the distribution pattern of fish larvae classified as a group (March 0-14.17 and May 2.43-10.40 ), and the evenness index value is in the medium category (March 0.437 and May 0.521).

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