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Calculation of the photosynthetic quotient (pq) in the Gulf of Gdansk (southern Baltic)

100%

Wielgat-Rychert M., Rychert K., Witek Z., Zalewski M.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

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2017

|

tom 21

The photosynthetic quotient (PQ) is defined as the molar ratio of oxygen released to the carbon dioxide assimilated during photosynthesis. Calculation of correct PQ values of natural phytoplankton populations is crucial for understanding of carbon budgets but often result in values that differ highly from the expected stoichiometric proportions of photosynthetic products. In the present study, measurements of primary production, that is, CO2 assimilation, performed with the standard isotopic method (14C) and oxygen release estimated during photosynthesis with the light-and-dark bottle method were compared to calculate PQ in the southern Baltic (Gulf of Gdańsk, Poland). The PQ average was 1.28 (ANOVA; F = 872; R2 = 0.92; n = 77; p < 0.001). Neither nitrogen source nor phytoplankton composition was noted to impact PQ values. Very high PQ values in the lower range of production rates (that cannot be explained by the stoichiometric proportion of photosynthesis products) were interpreted as artifacts related to the lower sensitivity of the oxygen method compared to that of the 14C method.

2

Application of the hydroacoustic methods to the detailed determination of the seafloor condition in the area of roadsteads and anchorages

100%

Rudowski S., Gajewski L., Jezionek E.

Oceanological Studies

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2000

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tom 29

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nr 3

3

Energetic values of the body of Macoma balthica L. from the Gulf of Gdansk

88%

Szaniawska A., Wolowicz M., Wenne R.

Oceanologia

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1986

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tom 24

4

The first recorded bloom of Pseudochattonella farcimen (Dictyochophyceae, Heterokonta), (Riisberg I., 2008) in the Gulf of Gdańsk

88%

Lotocka M.

Oceanologia

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2009

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tom 51

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nr 1

139-143

In April 2001 a local bloom of the heterokont phytoflagellate Pseudochattonella farcimen (Riisberg I., 2008) (initially named Chattonella aff. verruculosa) was observed for the first time in the southern part of the Gulf of Gdańsk. The species occurred in high cell densities: the count was 11.5×106 cells dm−3 and the biomass 927.5 μgC dm−3.

5

Seismostratigraphy of the nearshore sediments at Kepa Redlowska, Gulf of Gdansk

88%

Wicher W., Necel A.

Oceanological Studies

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2000

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tom 29

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nr 3

6

Characteristics of the selected hydrological parameters of the Gulf of Gdansk in the planned area of sewage discharge from the Gdansk-Wschod sewage-treatment plant

88%

Nowacki J., Matciak M.

Oceanological Studies

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2000

|

tom 29

|

nr 4

7

Holocene diatom biostratigraphy of the SW Gulf of Gdansk, Southern Baltic Sea [part III]

75%

Lesniewska M., Witak M.

Oceanological and Hydrobiological Studies

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2008

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tom 37

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nr 4

35-52

8

Cyanobacterial blooms in the Gulf of Gdansk [Southern Baltic]: the main effect of eutrophication

75%

Jozwiak T., Mazur-Marzec H., Plinski M.

Oceanological and Hydrobiological Studies

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2008

|

tom 37

|

nr 4

115-121

9

Analysis of the composition and vertical distribution of the macroalgae in Western part of the Gulf of Gdansk in 1979 and 1980

75%

Plinski M., Florczyk I.

Oceanologia

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1984

|

tom 19

10

An attempt to determine trophic structure of the bottom fauna in coastal waters of the Gulf of Gdansk

75%

Wiktor K.

Oceanologia

|

1985

|

tom 21

11

Evadne anonyx G. O. Sars, 1897 – the first record of this Ponto-Caspian cladoceran in the Gulf of Gdansk (Baltic Sea)

75%

Bielecka L., Mudrak-Cegiolka S., Kalarus M.

Oceanologia

|

2014

|

tom 56

|

nr 1

12

Bacteriological investigation of the surface microlayer of the Gulf of Gdansk

75%

Mudryk Z., Korzeniewski K., Falkowska L.

Oceanologia

|

1991

|

tom 30

13

Verdet constant polarimetric measurement in aqueous solutions of salts

75%

Heldt J., Szczepanski J., Kowalewska G., Zielinski A.

Oceanologia

|

1985

|

tom 20

14

The first record of Piscicola pojmanskae Bielecki, 1994 in the Gulf of Gdansk (the Southern Baltic Sea) with species characteristics distinguishing it from Piscicola geometra (Linnaeus, 1758)

75%

Kendzierska H., Dabrowska A. H., Cichocka J. M., Janas U., Bielecki A.

Oceanological and Hydrobiological Studies

|

2014

|

tom 43

|

nr 3

15

Water mass exchange between the Gulf of Gdansk and the Baltic Sea

75%

Jankowski A.

Oceanologia

|

1985

|

tom 20

16

Oocyte hydration in round goby Neogobius melanostomus from the Gulf of Gdańsk: another invasive strategy?

75%

Kalamarz-Kubiak H., Guellard T.

Oceanologia

|

2019

|

tom 61

|

nr 4

17

The effect of selected dispersants on growth of Chlorella vulgaris Beijernick and Scenedesmus quadricauda (Turpin) Brebisson

75%

Latala A., Plinski M.

Oceanologia

|

1985

|

tom 22

18

The production characteristic of the phytobenthos of the Gulf of Gdansk

75%

Vozzhinskaya V. B., Plinski M.

Oceanologia

|

1990

|

tom 28

19

Salinity changes in the Bay of Puck due to brine discharge based on in-situ measurements

75%

Robakiewicz M.

Oceanological and Hydrobiological Studies

|

2014

|

tom 43

|

nr 2

20

Hydroid Gonothyraea loveni found on the straightnose pipefish (Nerophis ophidion) in the Gulf of Gdansk – symbiosis, parasitism or biofouling?

75%

Dziubinska A., Sapota M.

Oceanological and Hydrobiological Studies

|

2013

|

tom 42

|

nr 3

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