Wyniki wyszukiwania - AGRO

1

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

A concept for biological valuation in the marine environment

100%

Derous S., Agardy T., Hillewaert H., Hostens K., Jamieson G., Lieberknecht L., Mees J., Moulaert I., Olenin S., Paelinckx D., Rabaut M., Rachor E., Roff J., Stienen E. W. M., Van Der Wal J. T., Van Lancker V., Verfaillie E., Vincx M., Weslawski J. M., Degraer S.

Oceanologia

|

2007

|

tom 49

|

nr 1

In order to develop management strategies for sustainable use and conservation in the marine environment, reliable and meaningful, but integrated ecological information is needed. Biological valuation maps that compile and summarize all available biological and ecological information for a study area, and that allocate an overall biological value to subzones, can be used as baseline maps for future spatial planning at sea. This paper provides a concept for marine biological valuation which is based on a literature review of existing valuation criteria and the consensus reached by a discussion group of experts.

2

Bioluminescence of zooplankton in the Antarctic fiord Ezcurra Inlet

88%

Dera J., Weglenska T.

Oceanologia

|

1983

|

tom 15

3

Optimisation of the microbiological mutagenicity assay based on genetically modified Vibrio harveyi strains

88%

Podgorska B., Chec E., Ulanowska K., Wegrzyn G.

Journal of Applied Genetics

|

2005

|

tom 46

|

nr 2

Recently, we have developed a novel assay designed for detection of mutagenic pollution of the marine environment. This assay is based on the use of a series of genetically modified strains (named BB7, BB7M, BB7X and BB7XM) of a marine bacterium Vibrio harveyi. Sensitivity of the V. harveyi mutagenicity assay was found to be similar to, or even somewhat higher than, that of the commonly used Ames test. Subsequent studies indicated that this assay may be useful in assessment of mutagenic contamination of the marine environment. Nevertheless, we assumed that improvement of this assay is still possible, and thus we aimed to optimise its procedures. Here we present our research on the optimisation of the V. harveyi mutagenicity assay, which indicated that different tester strains used in this assay give the best results depending upon the experimental conditions employed. Incubation of bacteria in a buffer, rather than in a nutrient broth, containing a mutagen, increased the efficiency of the assay with BB7 and BB7M strains, but had a deleterious effect in the case of BB7X and BB7XM. The latter couple of strains revealed higher mutagenicity in the plate assay, as compared to the liquid medium assay. However, the opposite effect was observed for BB7 and BB7M. Low-dose (1 J m⁻²) UV irradiation, as well as 30 min incubation in 0.1 M CaCl₂, had no significant effect on the efficiency of the assay when using BB7 and BB7M, whereas the number of mutagen-induced mutants of BB7X and BB7XM strains increased about two times under these conditions. Our previous experiments indicated that various tester strains revealed different sensitivity to particular mutagens. Thus, a series of strains should be used in the assay. Results presented in this report show that different conditions should be used for two pairs of the tester strains: BB7 and BB7M, and BB7X and BB7XM.

4

Organotin compounds in marine sediments

75%

Radke B., Staniszewska M., Wasik A., Namiesnik J., Bolalek J.

Polish Journal of Environmental Studies

|

2008

|

tom 17

|

nr 5

643-654

Organotin compounds are widely used in almost all sectors of industry. Antifouling paints, which were applied to ship hulls to protect from fouling organisms, are the main source of TBT and TPhT derivatives loaded into the sea. The global ban on the use of these compounds in antifouling systems was introduced by the IMO in 2001. However, the ban did not solve the problem of the use of alternatives to TBT in the ship industry. Moreover, the issue of storing the organotins-containing dredged spoils at sea still remains unresolved. The pollution load deposited in port sediments may become an additional threat to the organisms that dwell in a given water basin. In such cases, it is necessary to establish appropriate norms for the quality classification of dredged spoils. Unfortunately, detailed guidelines concerning the disposal of dredged spoils are still lacking.

5

Elimination of the surface background in contactless sea investigations

75%

Olszewski J., Sokolski M.

Oceanologia

|

1990

|

tom 29

6

Living together in the plankton: a survey of marine protist symbioses

75%

Anderson O. R.

Acta Protozoologica

|

2014

|

tom 53

|

nr 1 Spec.is. Marine Heterotrophic Protists

7

Helminth endo-parasites of amphibians from Greame Ama, Okrika, Rivers State, Nigeria

75%

Amuzie C. C., Robert B., Ekerette I. B.

Environment, Earth and Ecology

|

2020

|

tom 4

|

nr 1

8

Historical occurrences of marine microalgal blooms in Indian Peninsula: Probable causes and implications

75%

Oyeku O. G., Mandal S. K.

Oceanologia

|

2021

|

tom 63

|

nr 1

9

Light scattering in Baltic crude oil - seawater emulsion

75%

Stelmaszewski A., Krol T., Toczek H.

Oceanologia

|

2009

|

tom 51

|

nr 3

405-414

The paper discusses the scattering of radiation by a Baltic crude oil –sea water emulsion. The scattering spectrum calculated using the Mie solution in the spectral range from 380 nm to 730 nm is compared with the measured spectrum of light scattered through a right angle. Spectra in the wavelength range from 210 nm to 730 nm were measured using a spectrofluorimeter for fresh and stored samples of the Baltic crude oil emulsion. Scattering increases with wavelength in the UV range and then decreases slightly with the wavelength of visible light. The result of the calculation is similar to the measured spectra. Both the calculated and measured spectra display numerous relative extremes throughout the spectral area. Light scattering in the emulsion decreases during storage as the oil concentration in the medium diminishes. The results also demonstrate that the single scattering model describes the phenomenon correctly.

10

Epicoccum nigrum link as a potential biocontrol agent against selected dermatophytes

75%

Piecuch A., Ogorek R., Dylag M., Cal M., Przywara K.

Acta Mycologica

|

2020

|

tom 55

|

nr 1

11

Background-reference values and environmental quality criteria as applied to the Southern Baltic

75%

Lysiak-Pastuszak E., Drgas N.

Oceanological Studies

|

2002

|

tom 31

|

nr 1-2

12

The effectiveness of protection from net overgrowth through the application of environmentally friendly biocides

75%

Zaucha J., Matulaniec M.

Bulletin of the Sea Fisheries Institute

|

1999

|

nr 1

13

A summary of alien marine benthic invertebrates in Danish waters

75%

Jensen K. R., Knudsen J.

Oceanological and Hydrobiological Studies

|

2005

|

tom 34

|

nr Suppl.1

14

The third periodic assessment of the Baltic Sea marine environment

75%

Trzosinska A.

Oceanological Studies

|

1996

|

tom 25

|

nr 1-2

15

Modelling the light absorption properties of particulate matter forming organic particles suspended in sea water. Part 3. Practical applications

75%

Wozniak B., Wozniak S. B., Tyszka K., Ostrowska M., Ficek D., Majchrowski R., Dera J.

Oceanologia

|

2006

|

tom 48

|

nr 4

16

Comparison of two models in the estimation of nitrogen uptake rates using data from 15-N incubation experiments

75%

Tungaraza C., Brion N., Baeyens W.

Oceanologia

|

2005

|

tom 47

|

nr 3

This paper compares two uptake rate models, Dugdale & Goering’s (D&G) model and Elskens’ model. The aim is to provide an insight into how estimates of uptake processes, i.e. regeneration and loss rates from both dissolved and particulate nitrogen pools, influence the total uptake rates when the two models are compared. The uptake rates of three nitrogenous nutrients (nitrate, ammonium and urea) from 15-N incubation experimental data were compared. The comparison indicated that the D&G model underestimated nitrate uptake rates by about 34%, implying a significant regeneration and loss rates of the nutrient. Elskens’ model further showed that the loss rates from the dissolved phase were about 40% and 25% for the ammonium and urea pools, respectively, indicating that the D&G model underestimated the experimental uptake rates of the nutrients. On average, nitrification made up about 30% of the total ammonium uptake flux, whereas the sinks from particulate nitrogen and dissolved nitrogen were estimated at 36% and 56%, respectively. The D&G model sometimes overestimated the f-ratio values to about 60% and higher as a result of ammonium and urea uptake rates underestimation. This paper also shows that detritus adsorption, bacterial uptake and cell lysis are equally important processes.

17

The effects of the marine aerosol on infrared propagation over the World Ocean

75%

Gathman S. G.

Oceanologia

|

1999

|

tom 41

|

nr 4

18

Ultrastructural study and description of Paramyxoides nephtys gen.n., sp.n. a parasite of Nephtys caeca [Fabricius, 1780] [Polychaeta: Nephtyidae]

75%

Larsson J. I. R., Koie M.

Acta Protozoologica

|

2005

|

tom 44

|

nr 2

19

Pathways and determinations of organometallic compounds in the marine environment with a particular emphasis on organotin

75%

Radke B., Namiesnik J., Bolalek J.

Oceanological and Hydrobiological Studies

|

2003

|

tom 32

|

nr 3

20

Petroleum in coastal seawater of Gdansk Bay

63%

Stelmaszewski A.

Oceanological and Hydrobiological Studies

|

2015

|

tom 44

|

nr 1

Ograniczanie wyników