Wyniki wyszukiwania

1

Wood supply variability

100%

Suchodolski P., Idzik M.

Electronic Journal of Polish Agricultural Universities. Series Economics

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2017

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tom 20

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nr 4

2

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Seasonal assessment of biological indices, bioaccumulation and bioavailability of heavy metals in mussels Mytilus galloprovincialis from Algerian west coast, applied to environmental monitoring

84%

Rouane-Hacene O., Boutiba Z., Belhaouari B., Guibbolini-Sabatier M. E., Francour P., Risso-de Faverney R.-d.

Oceanologia

|

2015

|

tom 57

|

nr 4

3

Seasonal fluctuations of photosynthetic pigments content in Taxus baccata needles

84%

Zarek M.

Dendrobiology

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2016

|

tom 76

Yew is a coniferous, evergreen, dioecious species. The objective of the study was to present a comprehensive characteristic of changes occurring throughout the year in terms of the content of photosynthetic pigments and related compounds in the needles of yew, depending on the sex of individuals and age of needles. Eight compounds, particularly chlorophyll a (Chl a), chlorophyll b (Chl b), carotenoids (Car), protoporphyrin IX (PPIX), magnesium protoporphyrin IX (MgPPIX), protochlorophyllide (Pchlide), chlorophyllide a (Chlide a), and chlorophyllide b (Chlide b), were subjected to quantitative analysis. Based on the several parameters under study, significant differences between male and female individuals were observed, while most commonly, the largest differences were reported in the autumn and winter period. They were related to the content of Chl a, Chl b and Chl/Car ratio. The remaining compounds showed no significant differences according to the sex and were slightly different only in single periods. For all the studied parameters except for Chl/Car ratio, interaction between sampling dates and sex was not statistically significant. Significant differences between the needles of different age were observed only in terms of the content of Chl b, MgPPIX, Pchlide, Chlide b, and Chl a/b ratio, and these differences were always caused by the current-year needles.

4

Seasonal fluctuations and long-term trends of nutrient concentrations in the Polish zone of the Baltic Sea

84%

Trzosinska A.

Oceanologia

|

1990

|

tom 29

5

Occurrence of two-spotted spider mite (Tetranychus urticae Koch) on Potentilla fruticosa cultivars

84%

Szafranek P.

Journal of Horticultural Research

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2016

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tom 24

|

nr 2

6

Rodent species diversity and occurrence of Leishmania in Northeastern Iran

84%

Motevalli-Haghi S. F., Ozbaki G. M., Hosseini-Vasoukolaei N., Nikookar S. H., Dehghan O., Yazdani-Charati J., Siahsarvie R., Dehbandi R., Fazeli-Dinan M., Enayati A.

Polish Journal of Ecology

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2021

|

tom 69

|

nr 1

7

Unravelling the spatio-temporal variation of zooplankton community from the river Matla in the Sundarbans Estuarine System, India

84%

Nandy T., Mandal S.

Oceanologia

|

2020

|

tom 62

|

nr 3

8

Seasonal and annual probabilistic forecasting of water levels in large lakes (case study of the Ladoga Lake)

84%

Myakisheva N., Gaidukova E., Shanochkin S. V., Batmazova A. A.

International Letters of Natural Sciences

|

2021

|

tom 82

9

The abundance, biomass and production of bacterioplankton in the Pomeranian Bay

84%

Ameryk A., Mudryk Z., Podgorska B.

Oceanologia

|

1999

|

tom 41

|

nr 3

10

The occurrence and activity of sulphate-reducing bacteria in the bottom sediments of the Gulf of Gdańsk

84%

Mudryk Z. J., Podgorska B., Ameryk A., Bolalek J.

Oceanologia

|

2000

|

tom 42

|

nr 1

The paper presents the results of investigations concerning the number, distribution and physiological activity of sulphate-reducing bacteria (SRB) inhabiting the bottom sediments of the Gulf of Gdańsk. The numbers of this group of bacteria range between 0.76 × 103 and 1.27 × 104 cells per g wet sediment. The bacterial sulphate reduction rate in bottom sediments of this area of the Baltic Sea varies from 1.89 to 31.6 nM SO2− 4 g−1 24 h−1. The numbers of SRB and their physiological activity were subject to considerable seasonal fluctuations, maximum values being noted in summer (June) and minima in spring (April). A direct relationship has been found between the number of SRB and hydrogen sulphide concentrations; there is, however, no such relationship with reference to sulphate concentrations. The numbers and distributions of SRB demonstrated considerable variation in a depth profile of bottom sediments. SRB inhabiting the bottom sediments of the Gulf of Gdańsk were able to use three different organic substrates (lactate, acetate, propionate) as electron donors and as carbon and energy sources.

11

Cyanobacteria in a slightly eutrophic lake: seasonal fluctuations and contribution to total phytoplankton

84%

Szelag-Wasielewska E.

Oceanological and Hydrobiological Studies

|

2005

|

tom 34

|

nr Suppl.3

12

Radon in the air in the Millenium of the Polish State Underground Tourist Route in Klodzko [Lower Silesia]

84%

Przylibski T. A.

Archiwum Ochrony Środowiska

|

1998

|

tom 24

|

nr 2

13

Seasonal fluctuations of Phtisica marina Slabber [Crustacea: Amphipoda: Caprellidea] in estuarine zone of Southwest Spain

84%

Guerra-Garcia J. M., Corzo J., Garcia-Asencio I., Garcia-Gomez J. C.

Polskie Archiwum Hydrobiologii

|

2000

|

tom 47

|

nr 3-4

14

Histoire et dynamique du pergelisol europeen au Weichselien

84%

Van Vliet-Lanoe B.

Biuletyn Peryglacjalny

|

1994

|

tom 33

15

Trophic status of lake water evaluated using phytoplankton community structure - change after two decades

84%

Szelag-Wasielewska E.

Polish Journal of Environmental Studies

|

2006

|

tom 15

|

nr 1

Phytoplankton composition and biomass were studied in a small suburban lake within the city of Poznań (western Poland) on the basis of water samples taken in epilimnion. Results obtained in 1999 were compared with the first study period, of 1978. In the first period, 100 phytoplankton taxa were found and diatoms were the largest group of species (29% of all taxa), while in the second period 117 phytoplankton taxa were recorded and green algae dominated (50%). The mean phytoplankton biomass increased nearly 2-fold over the two decades and the trophic state index was higher in 1999. Picophytoplankton, whose seasonal fluctuations were analyzed only in 1999, accounted for 0.6% to 31.5% (mean 12.8%) of total phytoplankton biomass.

16

The importance of fish ponds in the “Mala Wisla” River catchment (Southern Poland)

67%

Lewkowicz S., Kuczynski M., Pilarczyk M.

Oceanological and Hydrobiological Studies

|

2008

|

tom 37

|

nr Suppl.1

17

Seasonal fluctuation of the prevalence of cymothoids representing the genus Nerocila (Crustacea, Isopoda), parasitizing commercially exploited marine fish from the Malabar Coast, India

67%

Aneesh P.-T., Sudha K., Arshad K., Anilkumar G., Trilles J.-P.

Acta Parasitologica

|

2013

|

tom 58

|

nr 1

The presently reported study investigated seasonal fluctuations in the prevalence in four species of Nerocila infesting commercially exploited marine fishes representing the families Engraulidae, Clupeidae and Ambassidae, from the Malabar coast (Kerala, India). Seven of 56 fish species belonging to 23 families were infested by either one or two species of Nerocila. All the collected Nerocila species showed significant seasonal fluctuations in the prevalence of infestation, reaching maximum from October through April and minimum (or total absence of the parasites) from May through September. Such fluctuations were analyzed based on environmental parameters. Body surface, postero-ventral side of the head and the lateral line of the host fish form the major infestation site for the recovered Nerocila species. Skin lesion and hemorrhages were observed on the fish parasitized with these cymothoids.

18

Seasonal fluxes of phosphate across the sediment-water interface in Edku Lagoon, Egypt

67%

Khalil M. K., Rifaat A. E.

Oceanologia

|

2013

|

tom 55

|

nr 1

19

Umowa zakladowa w okleiniarni Winsen wyrownuje wahania sezonowe

67%

W K.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

|

1995

|

tom 36

|

nr 4

320-321

20

An assessment of nutrient conditions in the Southern Baltic Sea between 1994 and 1998

67%

Lysiak-Pastuszak E.

Oceanologia

|

2000

|

tom 42

|

nr 4

Temporal variations (1994–98) in nutrient distribution were analysed in the Polish sector of the Baltic Sea with reference to long-term (1979–98) fluctuations of hydrological and chemical factors. Between 1994 and 1998 the winter accumulation of phosphate declined noticeably in most of the regions with the exception of the Gulf of Gdańsk. The winter peaks of silicate were also reduced in the offshore region and in the waters along the central Polish coast, but continued to accumulate in the bays owing to riverine input. In the offshore region a decrease in the winter accumulation of nitrate was noted in the surface water layer whereas in the bays nitrate concentrations continued to increase. Large quantities of nitrate continue to accumulate in the Gulf of Gdańsk, although at a slower rate than in 1979–93.

Ograniczanie wyników

Wood supply variability

Seasonal assessment of biological indices, bioaccumulation and bioavailability of heavy metals in mussels Mytilus galloprovincialis from Algerian west coast, applied to environmental monitoring

Seasonal fluctuations of photosynthetic pigments content in Taxus baccata needles

Seasonal fluctuations and long-term trends of nutrient concentrations in the Polish zone of the Baltic Sea

Occurrence of two-spotted spider mite (Tetranychus urticae Koch) on Potentilla fruticosa cultivars

Rodent species diversity and occurrence of Leishmania in Northeastern Iran

Unravelling the spatio-temporal variation of zooplankton community from the river Matla in the Sundarbans Estuarine System, India

Seasonal and annual probabilistic forecasting of water levels in large lakes (case study of the Ladoga Lake)

The abundance, biomass and production of bacterioplankton in the Pomeranian Bay

The occurrence and activity of sulphate-reducing bacteria in the bottom sediments of the Gulf of Gdańsk

Cyanobacteria in a slightly eutrophic lake: seasonal fluctuations and contribution to total phytoplankton

Radon in the air in the Millenium of the Polish State Underground Tourist Route in Klodzko [Lower Silesia]

Seasonal fluctuations of Phtisica marina Slabber [Crustacea: Amphipoda: Caprellidea] in estuarine zone of Southwest Spain

Histoire et dynamique du pergelisol europeen au Weichselien

Trophic status of lake water evaluated using phytoplankton community structure - change after two decades

The importance of fish ponds in the “Mala Wisla” River catchment (Southern Poland)

Seasonal fluctuation of the prevalence of cymothoids representing the genus Nerocila (Crustacea, Isopoda), parasitizing commercially exploited marine fish from the Malabar Coast, India

Seasonal fluxes of phosphate across the sediment-water interface in Edku Lagoon, Egypt

Umowa zakladowa w okleiniarni Winsen wyrownuje wahania sezonowe

An assessment of nutrient conditions in the Southern Baltic Sea between 1994 and 1998