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The chlorophyll alpha contents in the surface waters of the Gulf of Gdansk

100%

Latala A.

nr 64/3

187-195

Chlorophyll a content in the surface layer of the Gulf of Gdansk in the AVHRR images

84%

Krezel A. , Latala A.

nr 3-4

3-15

The satellite data in red and near infrared light (1st and 2nd channels of AVHRR) were processed and compared with chlorophyll a concentration in the surface layer of the Gulf of Gdansk. Taking into account Stumpf and Tyler (1988) proposal, quantitative relation between this concentration and the value of Cij=R2/R1 (where R2 and R1 denotes reflectance coefficients in AVHRR's channel 1 and 2 respectively) has been calculated.

Temporal and spatial variations in particle concentrations and size distributions in the Gulf of Gdansk

67%

Brandke K. , Latala A. , Czabanski P.

tom 26

nr 2-3

39-59

Measurements of suspended particle (diameter in the 4-30 mum range) concentrations and their sizes (using a Multisizer II Coulter Counter) carried out in the Gulf of Gdansk from May 1992 to December 1993 were used for studies of the temporal and spatial variability of particle size distributions. The quantity of suspended particles in Puck Bay waters was characteristically less variable both in the vertical and in the horizontal than was the open Gulf of Gdansk, which is influenced to some extent by the waters of the river Vistula. In Puck Bay, surface particle concentrations were usually in the range 1.6?103-1.0?104 cm-3, in the open Gulf of Gdansk they were 1.6?103-2.0?104 cm-3. The Vistula strongly influenced the concentration of larger particles and the shape of the particle size distribution curves just off the river mouth. The particle size distribution curves characteristic of the Gulf of Gdansk display, in general, the hyperbolic shape typical of marine suspensions. In waters with a relatively high concentration of particles, some additional increase in particle number in the diameter range of 10-20 ?m or just below 10 mum was recorded. During the year, three periods of maximum particle concentrations occurred. Two of them, in spring and autumn, were found to be related to maximum chlorophyll a concentrations. The best correlation between particle numbers and chlorophyll a content was found for particles with diameter D more than 10 mum for two classes of suspensions: with high (r=0.88) and low (r=0.82) particle concentrations occurring in the presence of the same chlorophyll a concentration.

Biodegradation of industrial waste with the application of lipolytic, proteolytic and cellulolytic bacteria

59%

Latala A. , Wierzba S. , Farbiszewska T. , Polaczek B. , Boniewska E.

Biotechnologia

2004

nr 3

202-212

The intensive civilization growth has lead to an increase in the amount of industrial waste. One of the ways to reduce the amount of waste is biodegradation. This paper presents the process of industrial waste biodegradation with the use of lipolytic, proteolytic and cellulolytic bacteria. Due to the complex composition of the waste, the degradation of fat, protein and carbohydrates. The biodegradation was carried out with the use of both archived and field bacteria. The aforementioned strains were also used in their genetically modified forms. The examination proved that genetically modified bacteria manifested much better biodegradation capacity than unmodified strains, and that the former reduced 89-94% of fat, 90-95% of protein and 90-96% of carbohydrates after 4 weeks of examination. In the case of unmodified strains, the reduction rates were lower by a few or more percent respectively, regardless of the substrate applied. In all the variations of the examination of reduction of fat, protein and carbohydrates the count of microorganisms was growing. Also, a close dependence between the oxidation and the intensity of the processes examined was noticed.