Analysis of Rybinsk and Ivankovo reservoirs diatom complexes and phytoplankton associations long-term transformations

Author(s):  
Lev V. Razumovsky ◽  
Vikenty L. Razumovsky

As a result of monitoring, a unified methodological approach was formulared for the ecosystems of the Ivankovsky and Rybinsk reservoirs, with comprehensive analysis of phytoplankton associations and diatom complexes from bottom sediments. In addition to traditional forms of hydrobiological analysis, the author's method of graphical analysis was applied.

Author(s):  
Vikenty L. Razumovsky

The research was carried out during the comprehensive monitoring of the Klyazma reservoir in 2019. The work is devoted to the assessment of long-term environmental changes under the influence of natural and anthropogenic factors. The research combines two traditional methods of analysis. A layer-by-layer study of diatomic complexes and chemical composition in the bottom sediments of the reservoir was carried out. The results obtained were compared with the results of comprehensive monitoring on the taxonomic composition of phytoplankton and the chemical composition of water in the reservoir's water area. The results of previous studies on the chemical composition of water in the reservoir were used. In addition to the traditional forms of chemical and hydrobiological analysis, an innovative method of graphical analysis was applied to phytoplankton complexes and the principle of unification of bioindication methods was applied for diatom complexes from sediment columns. The main scenarios of taxonomic proportions transformations in phytoplankton and diatom complexes were determined using the method of graphical analysis for the Klyazma reservoir water area. The transformations are caused by the influence of water from the Moscow channel and the planned annual lowering of the water level in the reservoir. Bottom sediments showed a regular increase in the reservoirs level of saprobisation. Presumably, this is due to a non-linear increase in the number of tourists and an cahnges in recreational load. Pronounced accumulation of Cu, Zn and other heavy metals in the coastal zone of the reservoir was confirmed.


Author(s):  
Elvira A. Zinnatova, Larisa A. Frolova ◽  
Larisa A. Frolova

The Northern lakes are good objects for paleoclimatic reconstructions. One of the sources of information about changes in the ecosystems of lakes are diatoms. The study of diatom complexes revealed 133 taxa belonging to 49 genera, 24 families, 13 orders and 3 classes in the bottom sediments of the thermokarst lake of the Pechora Delta. Dominated by the Holarctic representatives of benthic and fouling organisms giving preference to the alkaline environmental conditions.


Author(s):  
Elena V. Bespalova

Ancient lake sediments of Bibirevo section in the Yaroslavl and Kostroma Volga region are studied by means of graphical analysis of taxonomical structure of diatom complexes. This method allowed to record critical points (change of areas of stability) in the development of a Neopleistocene lake during the transition from stage to stage, as well as from phase to phase.


2016 ◽  
Vol 2 (2) ◽  
pp. 110
Author(s):  
Hava Rexhep

The aging is not only a personal but also a social challenge from several aspects, several dimensions; a challenge aiming to build system approaches and solutions with a long term importance. Aims: the main aim of this research is to investigate the conditions and challenges in the modern living of the old people, primarily in terms of the social care. However, this research is concentrated on a big group of the population and their challenges are the most intensive in the modern living. The investigation of the conditions and challenges in the aging are basis and encouragement in realizing the progressive approaches in order to improve the modern living of the old people. The practical aim of the research is a deep investigation and finding important data, analyzing the basic indicators of the conditions, needs and challenges in order to facilitate the old population to get ready for the new life. Methods and techniques: Taking into consideration the complexity of the research problem, the basic methodological approach is performed dominantly by descriptive-analytical method. The basic instrument for getting data in the research is the questionnaire with leading interview for the old people. Results: The research showed that the old people over 70-79 years old in a bigger percentage manifested difficulties primarily related to the functional dependency, respectively 39,33 % of the participants in this category showed concern about some specific functional dependency from the offered categories. The percentage of the stomach diseases with 38,33 % is important, as well as the kidney diseases with 32,83% related to the total population and the category of the old people over 80. Conclusion: The old people very often accept the life as it is, often finding things fulfilled with tolerance and satisfaction. However the health problems of the old people are characterized with a dominant representation. The chronic diseases and the diseases characteristic for the aging are challenge in organizing adequate protection which addresses to taking appropriate regulations, programs and activities.


1990 ◽  
Vol 22 (5) ◽  
pp. 203-210 ◽  
Author(s):  
D. Rank ◽  
F. J. Maringer ◽  
W. Papesch ◽  
V. Rajner

Water, sediment, and fish samples were collected during the Danube excursion 1988, within a coordinated sampling program of the Radiology Working Group of the “Internationale Arbeitsgemeinschaft Donauforschung ” (K.Hübel, Munich; I. Kurcz, Budapest; D.Rank, Vienna). The H-3 content of the river water and the radioactivity of the bottom sediments were measured at the BVFA Arsenal, Vienna. The determined H-3 content of the Danube water corresponds with the long-term trend in the H-3 content of the hydrosphere; the values lie in the range of 3 Bq/kg downstream from Belgrade, upstream from Belgrade they are about 4 Bq/kg. It was only in the waste water plume of the nuclear power station of Kozloduj that a slightly elevated H-3 value - 6 Bq/kg - was determined. The content of the sediments of artificial radionuclides was found, at the time of the Danube field excursion, to be almost exclusively due to the radioactive material released following the reactor accident at Chernobyl in April 1986 (mainly Cs-137 and Cs-134). As a consequence of the air currents and precipitation conditions prevailing at the time of the accident, the bottom sediments in the lower course of the Danube were less contaminated than those in the upper course. The fine sediments were found to contain over 3000 Bq/kg of Cs-137 in the upper course of the Danube.


Author(s):  
Camilla Stephens ◽  
Mercedes Robles-Diaz ◽  
Inmaculada Medina-Caliz ◽  
Miren Garcia-Cortes ◽  
Aida Ortega-Alonso ◽  
...  

2021 ◽  
Vol 40 (4) ◽  
pp. S180-S181
Author(s):  
R. Antończyk ◽  
A. Biełka ◽  
M. Kalinowski ◽  
J. Waszak ◽  
J. Małyszek-Tumidajewicz ◽  
...  

2021 ◽  
Author(s):  
Johannes Michael Bergmann

In Germany, a new assessment system (the NBA) is being applied to assess the need for long-term care. The degree of care that is calculated defines the extent of welfare state benefits. Measuring and analysing the need for care in a statistically appropriate way is subject to certain preconditions. This book presents multiple correspondence analysis (MCA) in combination with cluster analysis (HCA) as an innovative methodological approach to dealing with this challenge. The first part provides a theoretical discussion of the need for care; the second part describes MCA and HCA in detail using an example. The book is aimed at all those involved in the measurement and analysis of the need for care.


2009 ◽  
Vol 10 (3) ◽  
pp. 324-373 ◽  
Author(s):  
Dorothée François ◽  
Stuart Powell ◽  
Kerstin Dautenhahn

This paper presents a novel methodological approach of how to design, conduct and analyse robot-assisted play. This approach is inspired by nondirective play therapy. The experimenter participates in the experiments, but the child remains the main leader for play. Besides, beyond inspiration from non-directive play therapy, this approach enables the experimenter to regulate the interaction under specific conditions in order to guide the child or ask her questions about reasoning or affect related to the robot. This approach has been tested in a long-term study with six children with autism in a school setting. An autonomous robot with zoomorphic, dog-like appearance was used in the studies. The children’s progress was analyzed according to three dimensions, namely, Play, Reasoning and Affect. Results from the case-study evaluations have shown the capability of the method to meet each child’s needs and abilities. Children who mainly played solitarily progressively experienced basic imitation games with the experimenter. Children who proactively played socially progressively experienced higher levels of play and constructed more reasoning related to the robot. They also expressed some interest in the robot, including, on occasion, affect. Keywords: Human–Robot Interaction, Robot-Mediated Therapy, Robot-Assisted Play, Non-Directive Play Therapy, Assistive Technology, Autism, Children


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