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Integrative evaluation of contemporary human impacts on the world ocean and coastal resources

100%

Kaczynski W.

Ekonomia i Środowisko

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2012

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nr 3

2

The new order in the world's oceans and seas and the activities of the registered pioneer investors

100%

Kotlinski R., Wilczynski M.

Oceanologia

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1994

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tom 36

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nr 2

3

Variability of the specific fluorescence of chlorophyll in the ocean. Part 2. Fluorometric method of chlorophyll a determination

100%

Ostrowska M., Matorin D. N., Ficek D.

Oceanologia

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2000

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tom 42

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nr 2

Two methods of determining the chlorophyll a concentration in the sea have been formulated on the basis of artificially induced fluorescence measured with the aid of submersible fluorometers. The method of statistical correlation is founded on the empirical relationship between fluorescence and chlorophyll concentration. The theoretical model of fluorescence described in Part 1 of this paper (see Ostrowska et al. 2000, this volume) provides the basis of the other method, the physical method. This describes the dependence of the specific fluorescence of phytoplankton on the chlorophyll concentration, a diversity of photophysiological properties of phytoplankton and the optical characteristics of the fluorometer. In order to assess their practicability, the methods were subjected to empirical verification. This showed that the physical method yielded chlorophyll concentrations of far greater accuracy. The respective error factors of the estimated chlorophyll concentration were x = 2.07 for the correlation method and x = 1.5 for the physical method. This means that the statistical logarithmic error varies from −52 to +107% in the case of the former method but only from −33 to +51% in the case of the latter. Thus, modifying the methodology has much improved the accuracy of chlorophyll determinations.

4

Selected parameters of the mixed atmosphere layer above the sea surface determined with lidar

100%

Zielinski T.

Bulletin of the Polish Academy of Sciences. Earth Sciences

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2001

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tom 49

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nr 1

5

Benthic Gammaridea [Crustacea: Amphipoda] in the deep sea

100%

Thurston M.

Polskie Archiwum Hydrobiologii

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2000

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tom 47

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nr 3-4

6

Ocean acidification and marine microorganisms: responses and consequences

80%

Das S., Mangwani N.

Oceanologia

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2015

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tom 57

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nr 4

7

Inorganic suspension in waters of the Admiralty Bay in a year cycle [King George, South Shetland, Antarctica]

80%

Gurgul H., Stochmal W., Rakusa-Suszczewski S.

Quaestiones Geographicae

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1991-1992

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tom 17-18

8

The time-space variability of Copepoda from the Pseudocalanidae family in Croker Passage [Antarctic Peninsula]

80%

Zmijewska M. I., Bielecka L., Grabowska A.

Oceanological Studies

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1999

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tom 28

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nr 3-4

9

Variability of the specific fluorescence of chlorophyll in the ocean. Part 1. Theory of classical in situ chlorophyll fluorometry

80%

Ostrowska M., Majchrowski R., Matorin D. N., Wozniak B.

Oceanologia

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2000

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tom 42

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nr 2

The range of variability of the fluorescence properties of marine phytoplankton in different trophic types of seas and at different depths in the sea is analysed theoretically. An attempt is also made to interpret artificially induced in situ fluorescence measured with submersible fluorometers. To do this, earlier optical models of light absorption by phytoplankton (see Woźniak et al. 2000, this volume) and actual empirical data were applied. A straightforward theoretical model of artificially photoinduced phytoplankton fluorescence accounting for the complex influence of different photophysiological characteristics of phytoplankton and the optical characteristics of the instrument has been worked out. A physical method of determining chlorophyll a concentrations in seawater from fluorescence measured in situ with contact fluorometers can be based on this model.

10

Influence of photo- and chromatic acclimation on pigment composition in the sea

80%

Majchrowski R., Ostrowska M.

Oceanologia

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2000

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tom 42

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nr 2

The aim of this work was to find statistical relationships between the concentrations of accessory pigments in natural populations of marine phytoplankton and the absolute levels and spectral distributions of underwater irradiance. To this end, empirical data sets from some 600 stations in different parts of the seas and oceans were analysed. These data were obtained from the authors’ own research and from the Internet’s bio-optical data base. They included the vertical distributions of the concentrations of various pigments (identified chromatographically) and the vertical and spectral distributions of the underwater irradiance measured in situ or determined indirectly from bio-optical models. The analysis covered a total of some 4000 points illustrating the dependence of pigment concentration on underwater irradiance characteristics, corresponding to different depths in the sea. The analysis showed that the factor governing the occurrence of photoprotecting carotenoids (PPC) is short-wave radiation λ < 480 nm. A mathematical relationship was established between the relative PPC concentration (relative with respect to the chlorophyll a concentration) and the magnitude of the absorbed radiative energy per unit mass of chlorophyll a from the spectral interval λ < 480 nm, averaged in the water layers Δz = 60 m (or less near the surface) to account for vertical mixing. This absorbed short-wave radiation (λ < 480 nm) was given the name of Potentially Destructive Radiation (PDR∗(z)). Analysis of the relationships between the concentrations of particular photosynthetic pigments (PSP), i.e. chlorophyll b, chlorophyll c, photosynthetic carotenoids (PSC), and the underwater irradiance characteristics indicated that these concentrations were only slightly dependent on the absolute level of irradiance E0(λ), but that they depended strongly on the relative spectral distribution of this irradiance f(λ) = E0(λ)/PAR0. The relevant approximate statistical relationships between the relative concentrations of particular PSP and the function of spectral fitting Fj , averaged in the layer Δz, were derived. Certain statistical relationships between the pigment composition of the phtyoplankton and the irradiance field characteristics are due to the photo- and chromatic acclimation of natural populations of marine phytoplankton. These relationships can be applied in models of the coefficients of light absorption by phytoplankton.

11

Investigations of the selectivity of cod codends with meshes turned through 90

80%

Moderhak W.

Bulletin of the Sea Fisheries Institute

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1999

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nr 1

12

Pelagic amphipods

80%

Thurston M. H.

Polskie Archiwum Hydrobiologii

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2000

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tom 47

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nr 3-4

13

Cephalopods - unknown world of oceanic depths

80%

Samek A.

Folia Malacologica

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2016

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tom 24

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nr 1

14

Mathematical description of vertical algal accessory pigment distributions in oceans – a brief presentation

71%

Majchrowski R., Ostrowska M.

Oceanologia

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2009

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tom 51

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nr 4

A straightforward mathematical expression for describing the vertical distributions of algal accessory pigments in oceans is presented. To this end ca 1500 empirical datasets of accessory pigment depth profiles gathered during some 200 research cruises in different oceanic regions were analysed. These data were retrieved from the bio-optical databases of SeaBASS and U.S. JGOFS published on the Internet. The statistical relationships were analysed between the concentrations of accessory pigments and the trophic indices of waters, as measured by the surface concentrations of chlorophyll a and the optical depths in different oceanic regions. A mathematical expression was established and formulas based on it were found, approximating the relations between the vertical distributions of accessory pigments and the chlorophyll a concentration. These formulas can be used to model the species composition of algae in different parts of the ocean and in remote sensing algorithms.

Ograniczanie wyników

Integrative evaluation of contemporary human impacts on the world ocean and coastal resources

The new order in the world's oceans and seas and the activities of the registered pioneer investors

Variability of the specific fluorescence of chlorophyll in the ocean. Part 2. Fluorometric method of chlorophyll a determination

Selected parameters of the mixed atmosphere layer above the sea surface determined with lidar

Benthic Gammaridea [Crustacea: Amphipoda] in the deep sea

Ocean acidification and marine microorganisms: responses and consequences

Inorganic suspension in waters of the Admiralty Bay in a year cycle [King George, South Shetland, Antarctica]

The time-space variability of Copepoda from the Pseudocalanidae family in Croker Passage [Antarctic Peninsula]

Variability of the specific fluorescence of chlorophyll in the ocean. Part 1. Theory of classical in situ chlorophyll fluorometry

Influence of photo- and chromatic acclimation on pigment composition in the sea

Investigations of the selectivity of cod codends with meshes turned through 90

Pelagic amphipods

Cephalopods - unknown world of oceanic depths

Mathematical description of vertical algal accessory pigment distributions in oceans – a brief presentation