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Wyszukujesz frazę "Dubrawski, R." wg kryterium: Autor


Wyświetlanie 1-6 z 6
Tytuł:
Morphometric analysis in investigations of the coastal zone. Part I. Separation of morphological elements and scope of morphometric measurements
Autorzy:
Dubrawski, R.
Powiązania:
https://bibliotekanauki.pl/articles/111415.pdf
Data publikacji:
2001
Wydawca:
Instytut Morski w Gdańsku
Tematy:
coastal zone
morphological elements
morphometric parameters
Opis:
Hypsometric and bathymetric measurements of the Polish coastal zone, which were carried out since the early 50 ties of the last century, provided a very large amount of empirical material. Standardisation of profile recordings in the Coastal·Zone Databank provided a basis for the determination of the multi-temporal changes of the coast. Comparative analysis of coastal zone profiles is of basic importance in planning coastal protection and in designing coastal defence methods. For this aim morphological elements of the shore (beach and dune) and the nearshore (from waterline seawards) zones were separated, and measurements were made on profiles drawn in identical scale. In the present paper, methods of separating morphological elements and the scope of morphometric measurements on cross-shore profiles are presented. The next parts shall discuss: the methods of analysing morphometric parameters (part II), the methods of determining the erosion/accretion systems (part III), and the use of morphometric analysis in the protection of selected regions of the Polish coast (part IV).
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 1; 39-53
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the rate of change of the biocenosis of the inner Puck Bay
Autorzy:
Dubrawski, R.
Kruk-Dowgiałło, L.
Powiązania:
https://bibliotekanauki.pl/articles/1920345.pdf
Data publikacji:
1998
Wydawca:
Instytut Morski w Gdańsku
Tematy:
Puck Bay
biocenosis
Opis:
For decades, the biocenosis of the inner Puck Bay has been undergoing transformation, which probably at the break of the 60ties and 70ties took an ecologically disadvantageous turn. The negative processes which appeared at that time resulted both from eutrophication and anthropopression. Withdrawal of many animal and plant species was observed. The freed ecological niches were taken up by species which formerly appeared in small numbers. Significant changes of the biocenosis structure took place. In this paper, basing on the formula for the half-period of change, the rate of change of selected components of the ecological formations is calculated. Obtained results may allow to evaluate the processes disrupting the structure of biocenosis under the influence of long term eutrophication and anthropopression.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 1998, 25, 2; 55-70
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A system of protection and restoration of the Gulf of Gdańsk
Autorzy:
Kruk-Dowgiałło, L.
Dubrawski, R.
Powiązania:
https://bibliotekanauki.pl/articles/1920399.pdf
Data publikacji:
1998
Wydawca:
Instytut Morski w Gdańsku
Tematy:
protection
restoration
Gulf of Gdańsk
Opis:
Since many years, in the Gulf of Gdańsk various transformations proceeding under the influence of trophic and pollution-induced factors are observed. Changes of especially negative character were found in the biocenosis of the Puck Bay, in which many plant and animal sets became degraded or even devastated. Besides, at present the public feels endangered by bacterial pollution of the coastal zone and increasingly intensive phytoplankton blooming. This limits the possibilities of using these water areas for the needs of tourism and recreation. It was decided that comprehensive activities should be started, both on land and in the Bay itself, in order to limitlremediate the effects of eutrophication of this water area. In 1994 and 1995 monitoring and experimental investigations were carried out. In effect a system for protecting and restoring the biocenosis was developed, and the main assumptions for this system are presented in this paper.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 1998, 25, 1; 45-67
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationships between the properties of bottom surf ace sediments and the condition of phyto- and zoobenthos of the Puck Bay (1987-1999)
Autorzy:
Dubrawski, R.
Kruk-Dowgiałło, L.
Powiązania:
https://bibliotekanauki.pl/articles/1920565.pdf
Data publikacji:
2000
Wydawca:
Instytut Morski w Gdańsku
Tematy:
Puck Bay
bottom suiface sediments
zoobenthos
Opis:
Basing on investigations of bottom suiface sediments of the outer Puck Bay (1995, 1999) and the inner Puck Bay (1987, 199 I, 1996), their condition and the absolute quality was determined in accordance with the adopted classification { 3]. Carried out at the same time investigations of the condition and composition of phyto- and zoobenclws allowed determining the relationships between the biotic and abiotic components of the Puck Bay bottom. In the paper, results of correlation analysis are presented. They indicate strong relationships between selected systems of components. These results show also that loading of the sediments with organic matter has a significant influence on the properties of the environment and on the biocenoses of the investigated water area.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2000, 27, 1; 45-57
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrochemical flood flow of the Vistula -august 2001
Autorzy:
Dubrawski, R.
Afanas, B.
Dembska, G.
Powiązania:
https://bibliotekanauki.pl/articles/972857.pdf
Data publikacji:
2001
Wydawca:
Instytut Morski w Gdańsku
Tematy:
flood flow
Gulf of Gdańsk
Vistula
Opis:
Intense rain in the south em part of the Vistula 's watershed in Ju(v 2001 resulted in floods in many places and in flood water flows on the Vistula and its tributaries. The culmination of the flood reached the Gulf of Gdańsk in the night of 5th August 2001. In the period 4th to 6th August, 10 samples of water were taken, and d1e content of biogenic substances and of other components in these samples was determined. Basing on water flow measurements and on the content of the investigated components, the loads were calculated and compared with mean multi-annual loads for the pen·od 1984- 1998. It was found that the mean biogen load, related to water flow, was exceeded many times. Also the relationships between the analysed components, water flow and variability during the period of investigations were detennined. Obtained results show that there may be a very significant influence of biogens on the condition of the environment and on the dynamics of biocenotic processes of the Gulf of Gdańsk in the period before and after the propagation of flood waters of the Vistula.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 119-130
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrochemical flood flow of the Vistula -august 2001
Autorzy:
Dubrawski, R.
Afanas, B.
Dembska, G.
Powiązania:
https://bibliotekanauki.pl/articles/1920611.pdf
Data publikacji:
2001
Wydawca:
Instytut Morski w Gdańsku
Tematy:
flood flow
Gulf of Gdańsk
Vistula
Opis:
Intense rain in the south em part of the Vistula 's watershed in Ju(v 2001 resulted in floods in many places and in flood water flows on the Vistula and its tributaries. The culmination of the flood reached the Gulf of Gdańsk in the night of 5th August 2001. In the period 4th to 6th August, 10 samples of water were taken, and d1e content of biogenic substances and of other components in these samples was determined. Basing on water flow measurements and on the content of the investigated components, the loads were calculated and compared with mean multi-annual loads for the pen·od 1984- 1998. It was found that the mean biogen load, related to water flow, was exceeded many times. Also the relationships between the analysed components, water flow and variability during the period of investigations were detennined. Obtained results show that there may be a very significant influence of biogens on the condition of the environment and on the dynamics of biocenotic processes of the Gulf of Gdańsk in the period before and after the propagation of flood waters of the Vistula.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 119-130
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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