Wyniki wyszukiwania - Biblioteka Nauki

1

Biological parameters of onion thrips, Thrips tabaci Lindeman on onion cultivars

100%

Moraiet M. A. , Ansari M. S. , Basri R.

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nr 2

EN

Biological parameters of the onion thrips, Thrips tabaci Lindeman were studied on the following onion (Allium cepa L.) cultivars: Nasik Red Plus N-53, Onion Dr-301 (Krishna), Onion White, and Nasik Red, at 25±1oC and 65±5% RH. Signifi cant (p < 0.05) diff erences were found in the life stages and fertility life tables on diff erent cultivars except in the pupal stages. More information about the biological parameters of T. tabaci on onion cultivars can help in designing Integrated Pest Management programs for onion thrips.

2

Selected biological parameters and the abundance of the spawning population of roach Rutilus rutilus [L.] from Lakes Gardno and Łebsko

84%

Hornatkiewicz-Zbik A. , Ciepielewski W.

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nr 2

EN

The abundance of the spawning population of roach females from the coastal lakes Gardno (2 468 ha) and Łebsko (7 140 ha) located in the Słowiński National Park was estimated for the 1987-1992 period. Following bream, roach is the second most common cyprinid species in regulated fisheries catches. The size of the spawning population was estimated using Virtual Population Analysis and long-term fisheries statistics. Female roach dominated the exploited population at 62.4% in Lake Gardno and 64.3% in Lake Łebsko. During the analyzed period, more roach females were caught in Lake Gardno, which is more than twice as small as Lake Łebsko. Of the generations analyzed (1985, 1986, 1987, 1988, 1989 and 1990), more abundant years occurred in Lake Gardno. The most abundant generation in the two lakes was that of 1985, and following it, each subsequent generation was weaker than the preceding had been.

3

A brief analysis of North Sea physics

67%

Sundermann J. , Pohlmann T.

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nr 3

EN

The current state of understanding the North Sea’s physical system is presented. First, basic phenomena like astronomical tides and general circulation will be described and analysed with respect to their physical nature and respective interactions. There will be special focus on fundamental dynamic balances. Next, some specific topics relevant to the marine ecosystem, the economy and society will be considered: among them, spreading and transport processes, the fresh water budget, the heat budget and storm surges. A separate section is dedicated to the North Sea of Tomorrow, i.e. the prospective variations of the physical environment resulting from global changes in future decades. The statements are based on the long experience of the authors and their groups and include findings that are little known if at all. The review finishes with a list of open questions and the corresponding research demands.

4

Zwiazki azotu w wodach studziennych gminy Sokolow Podlaski

59%

Raczuk J.

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nr 1

49-56

PL

W wodach pochodzących z dwudziestu jeden studni kopanych i wierconych oznaczono stężenia azotanów (V) i azotanów (III) oraz jonu amonowego. Stwierdzono, że pod względem stężenia związków azotu wody pochodzące z 58% badanych studni nie odpowiadają polskim normom.

EN

In the year 2002 the quality of well waters was monitored in the area of Sokołów Podlaski district. Water samples collected four times per year from twenty once dug and drilled wells were examined for : NO3-, NO2-, NH4+, PO43- Cl, pH, total hardness and electrolytic conductivity. These studies showed that 58% out of all the analyzed water wells did not meet the requirements of standards related to nitrogen compounds content. During the whole period of the studies only 2 wells among 21 investigated met all the required standards as far as the examined parameters. These were the drilled wells of relevant localization and well enough isolated from all the sources of pollution.

5

Estuaries of the Polish Baltic coastal zone

51%

Paturej E.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

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2006

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tom 10

EN

Estuaries are dynamic ecosystems characterized by great and constant variability of physicochemical gradients and biological parameters. Considerable fluctuations in salinity levels, temperature, pH, concentrations of oxygen, nutrients and organic matter are quite natural in such water bodies. There are many estuarine forms at the Polish Baltic Coast, including open-sea gulfs (the Gulf of Gdansk and the Pomeranian Gulf), water bodies connected to the Baltic Sea (Lake Łebsko) and periodically closed water bodies connected to the Baltic Sea by channels or through river-mouths (Lake Jamno and Lake Gardno). The mouths of large rivers, like Odra and Vistula, also show features of estuaries. Estuaries perform a very important function of specific natural filters for a variety of chemical compounds contained in waters flowing through this area. In this way they form an effective buffer zone that prevents the penetration of toxic biological substances into seawater.

PL

Estuaria są dynamicznymi ekosystemami o bardzo dużej i ciągłej zmienności gradientów fizykochemicznych i parametrów biologicznych. Znaczne fluktuacje w poziomie zasolenia, temperatury, tlenu, pH, steżenia nutrientów oraz materii organicznej są naturalnym zjawiskiem w tych zbiornikach wodnych. Polskie Wybrzeże Bałtyckie obfituje w wiele form typu estuariowego, począwszy od zatopionych zatok w otwartym morzu (Zatoka Gdańska i Zatoka Pomorska) do zbiorników mających stałe połączenie z morzem (jezioro Łebsko) lub okresowo zamkniętych i przez kanały lub ujściowe odcinki rzek kontaktujących się z morzem (jeziora Jamno i Gardno). Cechy estuariów wykazują również ujścia wielkich rzek jak Odra i Wisła. Estuaria pełnia bardzo ważna funkcje jako swoiste naturalne filtry dla różnych związków chemicznych zawartych w przepływającej wodzie. Tworząc skuteczną strefę buforowa uniemożliwiają przedostawanie się wielu substancji biologicznie toksycznych do morza.

6

The hydrochemical and biological impact of the river Vistula on the pelagic system of the Gulf of Gdansk in 1994. Part 1. Variability in nutrient concentrations

34%

Pastuszak M.

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nr 2