Oceanologia No. 45 (3) / 03
Contents
Papers
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Dependence of the surf zone aerosol on wind direction and wind speed at a coastal site on the Baltic Sea:
Tymon Zieliński
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Adsorptive properties of natural water surfactant films. Dead Vistula catchment water studies: Stanisław J. Pogorzelski, Anna D. Kogut
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Practical applications of the multi-component marine photosynthesis model (MCM):
Dariusz Ficek, Roman Majchrowski, Mirosława Ostrowska, Sławomir Kaczmarek, Bogdan Woźniak, Jerzy Dera
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ADCP-referenced geostrophic velocity and transport in the West Spitsbergen Current:
Robert Osiński, Piotr Wieczorek, Agnieszka Beszczyńska-Möller, Ilona Goszczko
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The relationship between dissolved carbohydrates and
carbohydrate-degrading enzymes in the salinity gradient of the
Pomeranian Bight (southern Baltic):
Monika Nausch, Eberhard Kerstan
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The determination of total protein, total soluble carbohydrate and
pigment contents of some macroalgae collected from Gemlik-Karacaali
(Bursa) and Erdek-Ormanlı (Balikesir) in the Sea of Marmara, Turkey: Şükran Dere, Nurhayat Dalkiran, Didem Karacaoğlu, Gamze Yildiz, Egemen Dere
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Influence of bacterial activities on nitrogen uptake rates determined by the application of antibiotics:
Clavery Tungaraza, Natacha Brion, Véronique Rousseau, Willy Baeyens, Leo Goeyens
Communications
Papers
Dependence of the surf zone aerosol on wind direction and wind speed at a coastal site on the Baltic Sea
Oceanologia 2003, 45(3), 359-371
Tymon Zieliński
Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, PL-81-712 Sopot, Poland;
e-mail: tymon@iopan.gda.pl
Keywords: Aerosol, wind, surf zone, lidar, southern Baltic Sea
Manuscript received 29 May 2003, reviewed 5 August 2003, accepted 14 August 2003.
Abstract
Since 1992 lidar-based measurements have been carried out under various
meteorological conditions and at various times of the year.
The aerosol optical properties were determined in the marine boundary
layer as a function of altitude using such factors as wind direction,
duration and velocity and aerosol size distribution and concentration.
It was confirmed that in all cases, the total aerosol concentration,
size distribution and aerosol extinction increase with wind speed but
decrease with altitude. In the range of wind velocities from 1 to 15 m s-1
the mean aerosol optical thickness of the atmosphere (VIS) obtained
from the lidar varied from 0.1 to 0.38 for offshore winds and from 0.01
to about 0.1 for onshore winds, while the Ångström parameter for VIS
oscillated around 0.65 for onshore winds and around 1 for offshore
winds. Both parameters depended strongly on the history of the air mass
above the Baltic Sea.
Such aerosol optical thicknesses are in agreement with those obtained
by other researchers in the Baltic Sea area.
Adsorptive properties of natural water surfactant films.
Dead Vistula catchment water studies
Oceanologia 2003, 45(3), 373-394
Stanisław J. Pogorzelski, Anna D. Kogut
Institute of Experimental Physics, University of Gdańsk,
Wita Stwosza 57, PL-80-952 Gdańsk, Poland;
e-mail: fizsp@univ.gda.pl
Keywords: North Sea, modelling, instruments, methods
Manuscript received 19 February 2003, reviewed 16 June 2003, accepted 18 July 2003.
The study was supported by grant BW/5200-5-0320-2 from the
Polish Council for Scientific Research (KBN) and carried out in part
within the framework of the scientific activity of the University of
Gdańsk (supported from DS/5200-4-0024-03).
Abstract
The paper contains the results of natural
film experiments carried out on inland waters in the Dead Vistula
(Martwa Wisła)
catchment area during 1999-2002 using the integrated Langmuir
trough-Wilhelmy plate system, which "cuts out" an undisturbed
film-covered area without any physicochemical sample processing. The
static film parameters result from the generalized scaling procedures
applied to the surface pressure-area isotherms. They appear to
correspond well to observations of the film composition Alim, MW, Eisoth, film solubility and the miscibility of its components (via R, ΔSc and y factors), and surface concentration
Πeq, Γeq.
A novel approach is presented for the adsorption dynamics on the basis
of the mixed kinetic-diffusion
model and analyses of the dynamic surface pressure plots, which leads
to the determination of the effective relative diffusion coefficient Deff / D and activation energy barrier Ea / RT.
There is reason to believe that certain classes of film-forming
components or "end-members" may dominate
the static and dynamic surface properties. Some of these substances can
be used as source-specific surface-active biomarkers to trace temporal
and spatial changes due to environmental factors or the production of
biological matter. The concept was tested for the Dead Vistula river
and its tributaries. The results demonstrate that natural films are a
complex mixture of biopolymeric molecules covering a wide range of
solubilities, surface activities and molecular masses with an apparent
structural film architecture.
Such studies could lead to the development of film structure parameters
- indicators of ecosystem quality and the state of
the environment.
Practical applications of the multi-component marine photosynthesis model (MCM)
Oceanologia 2003, 45(3), 395-423
Dariusz Ficek2,
Roman Majchrowski2, Mirosława Ostrowska1, Sławomir Kaczmarek1,
Bogdan Woźniak1,
Jerzy Dera1
1Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, PL-81-712 Sopot, Poland
2Institute of Physics, Pomeranian Pedagogical Academy in Słupsk , Arciszewskiego 22 B, PL-76-200 , Poland;
e-mail: darek@wsp..pl
Keywords:
Bio-optical modelling, quantum yield of photosynthesis, primary
production, inorganic nitrogen, tropical zone, temperate zone, polar
zone
Manuscript received 18 July 2003, reviewed 5 August 2003, accepted 19 August 2003.
This work was carried out within the framework of IO PAN's statutory
research, and also as part of project PZB-KBN 056/PO4/2001/3 of the
Institute of Physics, Pomeranian Pedagogical Academy in Słupsk .
Abstract
This paper describes the applications and
accuracy analyses of our multi-component model of marine
photosynthesis, given in detail in Woźniak et al. (2003). We now
describe an application of the model to determine quantities
characterising the photosynthesis of marine algae, especially the
quantum yield of photosynthesis and photosynthetic primary production.
These calculations have permitted the analysis of the variability of
these photosynthesis characteristics in a diversity of seas, at
different seasons, and at different depths.
Because of its structure, the model can be used as the "marine part" of
break a "satellite" algorithm for monitoring primary production in the
sea (the set of input data necessary for the calculations can be
determined with remote sensing methods). With this in mind, in the
present work, we have tested and verified the model using empirical
data. The verification yielded satisfactory results: for example, the
statistical errors in estimates of primary production in the water
column for Case 1 Waters do not exceed 45%. Hence, this model is far
more accurate than earlier, less complex models hitherto applied in
satellite algorithms.
ADCP-referenced geostrophic velocity and transport in the West Spitsbergen Current
Oceanologia 2003, 45(3), 425-435
Robert Osiński, Piotr Wieczorek, Agnieszka Beszczyńska-Möller, Ilona Goszczko
Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, PL-81-712 Sopot, Poland;
e-mail: roberto@iopan.gda.pl
Keywords:
Geostrophic flow, ADCP and CTD measurements, Arctic circulation, baroclinic and barotropic components of velocity
Manuscript received 4 March 2003, reviewed 22 May 2003, accepted 10 July 2003.
Abstract
During the summer of 2000 and 2002
(June-July) the West Spitsbergen Current (WSC) was investigated by the
Institute of Oceanology, Polish Academy of Sciences. CTD and current
measurements by a vessel-mounted Acoustic Doppler Current Profiler
(ADCP) were performed along three transects perpendicular to the WSC
main stream and covering the region from 76°30' N to 78°20' N and from
02°30' E to 15° E. In general, the geostrophic, baroclinic flow
patterns and the
ADCP-measured currents were found to be in good agreement but measured
current velocities were significantly higher than calculated values.
This fact supports earlier observations that
the barotropic component is dominant in the WSC. Since ADCP has a
better spatial resolution than CTD records, the West Spitsbergen
Current could be investigated and described in much greater detail
than before.
The main stream of Atlantic Water is topographically steered
by the continental slope (isobars 800-2000 m) and the complex,
multistream structure of the West Spitsbergen Current is clearly
visible. The absolutely referenced total geostrophic transport
is about three times higher than the estimated value assuming
the level of no motion lies at 1000 m.
The relationship between dissolved
carbohydrates and carbohydrate-degrading enzymes in the salinity
gradient of the Pomeranian Bight (southern Baltic)
Oceanologia 2003, 45(3), 437-452
Monika Nausch, Eberhard Kerstan
Baltic Sea Research Institute, Seestrasse 15, DE-18119 Rostock-Warnemünde, Germany;
e-mail: monika.nausch@io-warnemuende.de
Keywords:
Dissolved carbohydrates, glucosidase activity, glucosaminidase activity, salinity gradient, Baltic Sea
Manuscript received 17 February 2003, reviewed 7 May 2003, accepted 12 May 2003.
Abstract
From 1994 to 1996 changes in the concentrations of dissolved mono-
(MCHO) and total dissolved polysaccharides (TCHO) as well as the
activities of carbohydrate-degrading enzymes α- and β-glucosidase,
glucosaminidase) were investigated during mixing of water from the
River Odra and the open Pomeranian Bight. This study addresses the
question of whether their distribution was a result of physical
dilution alone or if biological interactions were detectable.
Within the salinity gradient, ranging from 1.9 to 7.8 PSU, TCHO declined from
13.2 µmol l-1 near the Świna mouth to 2.8 µmol l-1
after mixing. Concentrations of MCHO decreased from 3.4 µmol l-1 to 1.1
µmol l-1
but its distribution pattern varied more between summer and autumn than
that of TCHO. The hydrolysis rate (Hr) by glucosidase and
glucosaminidase activities was reduced from
13.9% h-1 to 0.3% h-1 and 9.9% h-1 to 0.2% h-1,
respectively, and correlated with the uptake rate of glucose (To) by
bacteria. In summer, the To/Hr ratio increased from
about 1.2 to 29.4, mainly because of stronger decreases in Hr than in
To. It was shown that the relationship between enzymatic release and
uptake of carbohydrates influences the concentration of dissolved
carbohydrates within the salinity gradient. Most probably, the decrease
in carbohydrate-degrading enzymes is the result of reduced substrate
stimulation and the lower number of particle-associated bacteria.
The determination of total protein, total soluble carbohydrate and pigment contents of some macroalgae
collected from Gemlik-Karacaali (Bursa) and Erdek-Ormanlı (Balikesir) in the Sea of Marmara, Turkey
Oceanologia 2003, 45(3), 453-471
Şükran Dere, Nurhayat Dalkiran, Didem Karacaoğlu, Gamze Yildiz, Egemen Dere
Uludağ University, Art and Science Faculty, Biology Department, TR-16059 Görükle/Bursa, Turkey;
e-mail: sdere@uludag.edu.tr
Keywords:
Total protein, total soluble carbohdrate, pigments, seaweeds
Manuscript received 4 April 2003, reviewed 10 July 2003, accepted 12 August 2003.
Abstract
In this study, 12 taxa from the Chlorophyta, Phaeophyta and Rhodophyta
were collected from different depths at Gemlik-Karacaali and
Erdek-Ormanlı. A total of 175 specimens from these divisions were used
to determine Total Protein (TP), Total Soluble Carbohydrate (TSCH) and
Chlorophyll a (Chl a), Chlorophyll b (Chl b), Chlorophyll c (Chl c), total carotenoid (Car) contents and Chl b / Chl a, Chl c / Chl a, Car / Chl a, Car / Chl b, Car / Chl c
ratios. TP, TSCH and pigment contents varied significantly with respect
to the algal taxa, stations and depth distribution. In addition,
individual differences were important
in all of the measured parameters.
The maximum TP contents (0.94%-31.03%) were determined in some of the Rhodophyta. In some green seaweeds belonging to the genus Ulva L., the TP content was determined between 2.9%-28.1%. Lower TP contents were determined in Cystoseira barbata (Good) C. Agardh (1.1%-4.3%). In contrast to TP contents, TSCH values were very low; maximum TSCH were determined in Ulva
species, as were protein contents. In conclusion, the variations in TP,
TSCH and pigment in 12 taxa of macroalgae were analysed according to
station, depth, and environment.
Influence of bacterial activities on nitrogen uptake rates determined by the application of antibiotics
Oceanologia 2003, 45(3), 473-489
Clavery Tungaraza1,*, Natacha Brion1, Véronique Rousseau2, Willy Baeyens1, Leo Goeyens1
1Vrije Universiteit Brussel, Laboratorium Analytische Chemie, Pleinlaan 2, BE-1050 Brussel, Belgium
2Université Libre de Bruxelles, Ecologie des Systèmes Aquatiques C.P. 221, BE-1050 Bruxelles, Belgium
*current contact address: Sokoine University of Agriculture - Mazimbu, P.O Box 3038, Morogoro, Tanzania;
e-mail: tungaraza@suanet.ac.tz
Keywords:
Bacteria, phytoplankton, nitrogenous nutrients, uptake rates
Manuscript received 6 June 2002, reviewed 29 July 2002, accepted 14 April 2003.
Abstract
The influence of bacterial activities on inorganic nutrients has always
affected total phytoplankton uptake rates owing to the absence of a
reliable method that can exclude these effects. The use of natural
samples to determine the contribution of bacterial activities has been
based on the size fractionation method which, unfortunately, is
encumbered with uncertainties, especially because of the size overlap
between bacteria and phytoplankton communities. In this paper, the
results are reported of an estimation of bacterial activities by the
use of inhibitors (antibiotics). It was shown that the contribution of
bacterial activities to the uptake of nitrogenous nutrients was highest
for ammonium (79%), followed by nitrate (72%) and urea (62%). In a
second set of experiments the concentration of ammonium was raised by 5
µM.
This was done to avoid nutrient limitation resulting from the absence
of recycled nutrients following the addition of antibiotics and the
maximum contribution of bacterial activity to the uptake rate of
ammonium increased to 87%. It can be concluded that the use of
inhibitors is a good method, a reliable alternative to the
fractionation method. However, it is important to note that inhibitors
can affect both phytoplankton growth and the nutrient recycling
process. Our results indicate that the application of antibiotics had
measurable effects not only on the target bacteria but also on the
uptake behaviour of phytoplankton.
Our observations were therefore limited to the period when there was no
effect on the phytoplankton, as was demonstrated by a carbon protein
incorporation experiment.
Communications
PCBs in phytoplankton in the Odra Estuary
Oceanologia 2003, 45(3), 491-506
Joanna Konat-Stepowicz, Grażyna Kowalewska
Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, PL-81-712 Sopot, Poland;
e-mail: kowalewska@iopan.gda.pl
Keywords:
PCBs, phytoplankton, Odra Estuary, Baltic Sea
Manuscript received 3 June 2003, reviewed 11 July 2003, accepted 18 July 2003.
Abstract
Eleven PCB congeners were determined in
phytoplankton samples collected from the Odra Estuary at 9 stations in
2001-2002. The PCB concentrations were related to the temperature,
turbidity, salinity, oxygen and redox potential of the water as well as
to the pigment content in the samples. The results indicate that
phytoplankton and the detritus derived from it play a crucial role in
the distribution of PCBs, their transfer from the water column to
sediments and from the Estuary to the sea. The species composition of
the phytoplankton occurring in this area could also be very important
as regards the sorption of PCBs.
The invasive amphipod Gammarus tigrinus Sexton, 1939, in Puck Bay
Oceanologia 2003, 45(3), 507-510
Anna Szaniawska, Tomasz Łapucki, Monika Normant
Institute of Oceanography, University of Gdańsk, al. Marszalka Pilsudskiego 46, PL-81-378 Gdynia, Poland;
e-mail: anna@sat.ocean.univ.gda.pl
Keywords:
Gammarus tigrinus, alien species, Baltic Sea
Manuscript received 14 January 2003, reviewed 23 May 2003, accepted 5 June 2003.
This research was supported by the BALTDER project funded by the European Community under contract number EVK3-CT-2002-80005.
Abstract
The paper is a report on the occurrence of the species Gammarus tigrinus Sexton, 1939, in the coastal waters of Puck Bay.