Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 9

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Comparison of the burial rate estimation methods of organic and inorganic carbon and quantification of carbon burial in two high Arctic fjords

100%
Koziorowska K., Kulinski K., Pempkowiak J.
Oceanologia
|
2018
|
tom 60
|
nr 3
2

Zmiany globalne a zagrożenia dla, i ze strony Morza Bałtyckiego

100%
Pempkowiak J., Beldowski J., Kulinski K.
Studia. Polska Akademia Nauk. Komitet Przestrzennego Zagospodarowania Kraju
|
2009
|
tom 124
Global changes and associated threats to, and by the Baltic Sea
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Deposition, return flux, and burial rates of nitrogen and phosphorus in the sediments of two high-Arctic fjords

100%
Koziorowska K., Kulinski K., Pempkowiak J.
Oceanologia
|
2018
|
tom 60
|
nr 4
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Fluorescence measured in situ as a proxy of CDOM absorption and DOC concentration in the Baltic Sea

100%
Kowalczuk P., Zablocka M., Sagan S., Kulinski K.
Oceanologia
|
2010
|
tom 52
|
nr 3
431-471
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Benthic diffusive fluxes of organic and inorganic carbon, ammonium and phosphates from deep water sediments of the Baltic Sea

88%
Lengier M., Szymczycha B., Brodecka-Goluch A., Klostowska Z., Kulinski K.
Oceanologia
|
2021
|
tom 63
|
nr 3
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Diurnal and seasonal DOC and POC variability in the land-locked sea

88%
Szymczycha B., Winogradow A., Kulinski K., Koziorowska K., Pempkowiak J.
Oceanologia
|
2017
|
tom 59
|
nr 3
Organic matter is a minor yet important component of the marine environment. The aim of this study was to investigate the diurnal and seasonal changes in dissolved and particulate organic carbon (DOC and POC, respectively). Thus, DOC and POC as well as chlorophyll a (Chl a), δ13C, NO3−, NO2−, NH4+, PO43−, salinity, pH, and temperature were regularly measured in samples collected for 24 h (2-h resolution) in the Gdańsk Deep (54°44.730′N, 19°08.531′E) at three water depths (1, 10, and 40 m) during sampling campaigns in 2011 (May), 2014 (May), and 2015 (January, March, May, July, September, November). Seasonal variations in DOC and POC followed the seasonality of Chl a (proportional trend) and nutrients (reverse trend) concentrations. Diurnal oscillations were detected in six out of the eight measurement series. The strongest diurnal variability in both POC and DOC occurred in May 2011 and March 2015, when phytoplankton activity was highest (high Chl a). The surprisingly low δ13C values (range: −28‰ to −24‰) measured over the course of the study revealed the gaps in our knowledge of the isotopic characteristics of terrestrial- vs. marine-derived particulate organic matter.
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Numerical modelling of POC dynamics in the Southern Baltic under possible future conditions determined by nutrients, light and temperature

88%
Dzierzbicka-Glowacka L., Kulinski K., Maciejewska A., Jakacki J., Pempkowiak J.
Oceanologia
|
2011
|
tom 53
|
nr 4
This paper discusses predictions of particulate organic carbon (POC) concentra- tions in the southern Baltic Sea. The study is based on the one-dimensional Particulate Organic Carbon Model (1D POC), described in detail by Dzierzbicka- Głowacka et al. (2010a). The POC concentration is determined as the sum of phytoplankton, zoo- plankton and dead organic matter (detritus) concentrations. Temporal changes in the phytoplankton biomass are caused by primary production, mortality, grazing by zooplankton and sinking. The zooplankton biomass is affected by ingestion, excretion, faecal production, mortality and carnivorous grazing. The changes in the pelagic detritus concentration are determined by the input of dead phytoplankton and zooplankton, the natural mortality of predators, faecal pellets, and sinks – sedimentation, zooplankton grazing and biochemical decomposition. The model simulations were done for selected locations in the southern Baltic Sea (Gdańsk Deep, Bornholm Deep and Gotland Deep) under predicted conditions characterized by changes of temperature, nutrient concentrations and light availability. The results cover the daily, monthly, seasonal and annual POC concentration patterns in the upper water layer. If the assumed trends in light, nutrients and temperature in the southern Baltic correctly predict the conditions in 2050, our calculations indicate that we can expect a two- to three-fold increase in POC concentration in late spring and a shift towards postponed maximum POC concentration. It can also be anticipated that, as a result of the increase in POC, oxygenation of the water layer beneath the halocline will decrease, while the supply of food to organisms at higher trophic levels will increase.
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

A system for the determination of surface water pCO2 in a highly variable environment, exemplified in the Southern Baltic Sea

88%
Stokowski M., Makuch P., Rutkowski K., Wichorowski M., Kulinski K.
Oceanologia
|
2021
|
tom 63
|
nr 2
9
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Particulate organic carbon in the Southern Baltic Sea: numerical simulations and experimental data

88%
Dzierzbicka-Glowacka L., Kulinski K., Maciejewska A., Jakacki J., Pempkowiak J.
Oceanologia
|
2010
|
tom 52
|
nr 4
Particulate Organic Carbon (POC) is an important component in the carbon cycle of land-locked seas. In this paper, we assess the POC concentration in the Gdańsk Deep, southern Baltic Sea. Our study is based on both a 1D POC Model and current POC concentration measurements. The aim is twofold: (i) validation of simulated concentrations with actual measurements, and (ii) a qualitative assessment of the sources contributing to the POC pool. The POC model consists of six coupled equations: five diffusion-type equations for phytoplankton, zooplankton, pelagic detritus and nutrients (phosphate and total inorganic nitrogen) and one ordinary differential equation for detritus at the bottom. The POC concentration is determined as the sum of phytoplankton, zoo-plankton and pelagic detritus concentrations, all expressed in carbon equivalents. Bacteria are not simulated in this paper. The observed large fluctuations of POC concentrations are attributed to its appreciable seasonal variability. The maximum concentration of POC varied between 870 mgC m−3 in May and 580 mgC m−3 in September, coinciding with the period of maximum dead organic matter and phytoplankton biomass concentrations. The results of the numerical simulations are in good agreement with observed values. The difference between the modelled and observed POC concentrations is equal to 3–28% and depends on the month for which the calculations were made, although no time trend of the difference is observed. The conclusion is that the numerical simulations are a ufficiently good reflection of POC dynamics in the Baltic.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.