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Asterionellopsis glacialis (Family: Fragilariaceae, Class: Bacillariophyceae, Phylum: Ochrophyta) bloom and its impact on plankton dynamics at Kalpakkam (Bay of Bengal, Southeast coast of India)

Sahu Gouri, Mohanty Ajit Kumar, Sarangi Ranjit Kumar, Satpathy Kamala Kanta

Oceanologia

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2022

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No. 64 (1)

145--149

EN

An intense bloom of Asterionellopsis glacialis (Family: Flagilariaceae; Class: Bacillariophyceae; Phylum: Ochrophyta) was observed in the near-shore waters at Kalpakkam, Tamil Nadu. Proliferation was supported by the favorable temperature, salinity, and nutrient levels in the coastal waters prevailing in the post-northeast monsoon period. BIOENV analysis and PCA confirmed salinity and nitrate as the key environmental factors responsible for the A. glacialis abundance. Cluster analysis further supported the distinct state of coastal water during the bloom with respect to physicochemical properties. The bloom period was floristically and faunistically richer than the pre- and post-bloom periods. The cluster and nMDS analysis confirmed the effects of bloom on plankton dynamics in the near-shore waters at Kalpakkam. The dominance of meroplankters especially, Cirripedia nauplii and Bivalvia larvae over Copepoda during the peak bloom period, was a significant result of the study. PCA ordination plot for the quantitative aspects of phytoplankton and zooplankton groups further supported the above observation. Among Copepoda, Cyclopoida and Poecilostomatoida (mostly carnivorous) exceeded the Calanoida (mostly herbivorous) during the peak bloom period unlike the reverse trend observed during other periods. Fish eggs and larvae were available in substantial numbers during the bloom which indicated their proliferation in the presence of the blooming diatom standing stock as the food material.

2

Horyzont Europa : zdrowy ocean, morza, wody przybrzeżne i śródlądowe

Ramm Klara

Technologia Wody

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2020

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Nr 5 (73)

52--56

PL

Rozwój badań naukowych jest podstawą postępu społeczeństw. Unia Europejska ma znaczące osiągnięcia w pracach badawczo-rozwojowych. Szacuje się, że jedna trzecia światowych publikacji naukowych pochodzi właśnie z UE, mimo, że jej populacja stanowi tylko 7% populacji światowej. Dlatego powstaje Horyzont Europa, który ma być największym w historii programem naukowo-badawczym Unii Europejskiej, z budżetem wynoszącym 100 miliardów euro. Będzie w nowej perspektywie finansowej (2021-2027) następcą Horyzontu 2020. Prace nad nim trwają intensywnie od 2019 roku. Koncentruje się na kwestiach zmian klimatu, celach zrównoważonego rozwoju Narodów Zjednoczonych, konkurencyjności i wzroście gospodarczym.

3

Genetic diversity of the non-native crab Rhithropanopeus harrisii (Brachyura: Panopeidae) in the Polish coastal waters − an example of patchy genetic diversity at a small geographic scale

Hegele-Drywa J., Thiercelin N., Schubart C. D., Normant-Saremba M.

Oceanological and Hydrobiological Studies

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2015

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Vol. 44, No. 3

305--315

EN

The American panopeid crab species Rhithropanopeus harrisii (Gould, 1841) is listed as an non-native species in European waters. In Poland, it occurred in the 1950s at two sites at the Baltic Sea coast, the Dead Vistula River (DVR) and the Vistula Lagoon (VL). Almost 50 years later, two additional populations were identified in the Gulf of Gdańsk (GG) and its inner part, Puck Bay (PB). In the present study, we sequenced and analyzed part of the mitochondrial cytochrome oxidase subunit I gene of the four Polish populations of R. harrisii in order to assess their genetic diversity and connectivity. The analyzed sequences of a length of 989 base pairs revealed eight different haplotypes. The highest number of haplotypes (n=6) was observed in the population from GG, whereas the lowest (n=3) in VL. The most common haplotype was recorded in 37% of the analyzed individuals. Pairwise ΦST values were mostly non-significant, with the exception of the comparison between DVR and VL (ΦST = 0.267; P < 0.05) and between PB and VL (ΦST = 0.194; P < 0.05), indicating a restricted gene flow or different sources of colonization.

4

Spatio-temporal variation of microphytoplankton in the upwelling system of the south-eastern Arabian Sea during the summer monsoon of 2009

Thomas L. C., Padmakumar K. B., Smitha B. R., Asha Devi C. R., Bijoy Nandan S., Sanjeevan V. N.

Oceanologia

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2013

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No. 55 (1)

185-204

EN

The phytoplankton standing crop was assessed in detail along the South Eastern Arabian Sea (SEAS) during the different phases of coastal upwelling in 2009. During phase 1 intense upwelling was observed along the southern transects (8°N and 8.5°N). The maximum chlorophyll a concentration (22.7 mg m-3) was observed in the coastal waters off Thiruvananthapuram (8.5°N). Further north there was no signature of upwelling, with extensive Trichodesmium erythraeum blooms. Diatoms dominated in these upwelling regions with the centric diatom Chaetoceros curvisetus being the dominant species along the 8°N transect. Along the 8.5°N transect pennate diatoms like Nitzschia seriata and Pseudo-nitzschia sp. dominated. During phase 2, upwelling of varying intensity was observed throughout the study area with maximum chlorophyll a concentrations along the 9°N transect (25 mg m-3) with Chaetoceros curvisetus as the dominant phytoplankton. Along the 8.5°N transect pennate diatoms during phase 1 were replaced by centric diatoms like Chaetoceros sp. The presence of solitary pennate diatoms Amphora sp. and Navicula sp. were significant in the waters off Kochi. Upwelling was waning during phase 3 and was confined to the coastal waters of the southern transects with the highest chlorophyll a concentration of 11.2 mg m-3. Along with diatoms, dinoflagellate cell densities increased in phases 2 and 3. In the northern transects (9°N and 10°N) the proportion of dinoflagellates was comparatively higher and was represented mainly by Protoperidinium spp., Ceratium spp. and Dinophysis spp.

5

Annual spatio-temporal variation of the euphotic depth in the SW-Finnish archipelago, Baltic Sea

Luhtala H., Tolvanen H., Kalliola R.

Oceanologia

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2013

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No. 55 (2)

359-373

EN

We measured depth profiles of underwater PAR (photosynthetically active radiation) together with optically derived turbidity and chlorophyll fluorescence values at 11 sampling stations in the South-West Finnish archipelago of the Baltic Sea. The data were collected eight times during the spring, summer and early autumn of 2010. The results illustrate complex and multidimensional variations in the euphotic depth, which was subject to fourfold and twofold differences in the geographical and seasonal dimensions respectively. The spatio-temporal inconsistency and non-linearity of the seasonal euphotic depth variation calls for further studies at different spatial and temporal scales.

6

Jakość wód Potoku Oliwskiego i rzeki Redy oraz ich wpływ na przybrzeżne kąpieliska w aspekcie nowych przepisów prawnych

Tarasewicz K., Łuczkiewicz K.

Inżynieria Morska i Geotechnika

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2013

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nr 2

91--101

PL

Charakterystyka rejonów Potoku Oliwskiego i rzeki Reda. Potencjalne źródła zanieczyszczeń badanych obszarów. Aspekty prawne dotyczące oceny jakości wód powierzchniowych i wody w morskich kąpieliskach przybrzeżnych. Badania fizykochemiczne i zanieczyszczenia mikrobiologiczne analizowanych cieków oraz ich wpływ na wody przybrzeżne.

EN

Characteristics of the Oliwski Stream and Reda river catchments. Potential sources of pollution in studied areas. The legal aspects concerning assessment of surface water and costal water quality. Examinations of physico-chemical and microbiological pollutants of analysed watercourses and their influence on coastal water.

7

Development of tools for ecological quality assessment in the Polish marine areas according to the Water Framework Directive. Part IV - preliminary assessment

Osowiecki A., Łysiak-Pastuszak E., Kruk-Dowgiałło L., Błeńska M., Brzeska P., Kraśniewski W., Lewandowski Ł., Krzymiński W.

Oceanological and Hydrobiological Studies

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2012

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Vol. 41, No. 3

1-10

EN

A set of classification methods was developed for the Polish coastal and transitional waters regarding the biological quality elements – phytoplankton, macrophytes and macroinvertebrates as required by the EU Water Framework Directive. Mean summer chlorophyll-a and total summer biomass of phytoplankton were proposed as indicators in the phytoplankton assessment. Macrophytes were assessed by the Macrophyte Quality Assessment Index, including biomass and percent bottom coverage of the selected taxa. Macroinvertebrate assessment was based on a biotic index comprising abundance, dominance structure, taxonomical richness and species sensitivity/tolerance to eutrophication. A preliminary assessment of the ecological status revealed that the coastal and transitional waters failed to reach a "good" ecological status.

8

Konwencja Nairobi 2007

Koziński M. H.

Prace Wydziału Nawigacyjnego Akademii Morskiej w Gdyni

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2008

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Z. 21

82-91

PL

Dnia 18 maja 2007 r. ogłoszono przyjęcie w Nairobi Międzynarodowej Konwencji o Usuwaniu Wraków, która tworzy jednolite zasady międzynarodowe oraz procedury zapewniające szybkie i efektywne usuwanie niebezpiecznych wraków z wód przybrzeżnych. Konwencja ta wejdzie w życie w 12 miesięcy od daty złożenia dokumentów ratyfikacyjnych przez 10 państw. "Usuwanie" oznacza każdą formę zapobieżenia, ograniczenia lub wyeliminowania niebezpieczeństwa powodowanego przez wrak. Konwencja tworzy także nowy jednolity reżim kształtujący odpowiedzialność cywilną z tytułu usuwania niebezpiecznych wraków.

EN

18 may 2007 has announced the adoption of the Nairobi International Convention on Removal of Wreeks, which establishes uniform international rules and procedures to ensure the prompt and effective removal of hazardous wrecks from coastal waters. This Convention shall enter into force twelve months following the date on which ten states have deposited instruments of ratifikation. "Removal" means any form of prevention, mitigation or elimination of hazard created by a wreck. Convention establishes also new uniform legal regime governing responsibility and liability for removal of hazardous wreeks.

9

Organiczna obrona przeciwminowa w działaniach na wodach przybrzeżnych

Jurek K.

Zeszyty Naukowe AON

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2007

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nr 4(69)

139-148

EN

The article presents current basic platforms and mine countermeasures assets and the connection between the depth of the basin and forecasted assets to be employed. The concept of conducting mine countermeasures using organic assets and Airborne Mine Countermeasures (AMCM) while conducting operations on coastal waters was discussed further.

10

Coastal lakes and marine intrusions on the southern Baltic coast

Drwal J., Cieśliński R.

Oceanological and Hydrobiological Studies

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2007

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Vol. 36, No.2

61-75

EN

In particular branches of the Earth sciences the term estuary is used with various meanings. The term estuary is applied to objects that often differ from the original geographic meaning of the word. The phenomena that accompany them and processes that cause them are called also estuary phenomena and processes. The aim of the study is to describe, in a geographic context, the range in meaning of both the term and names of phenomena and processes derived from it. In the years 2002 – 2005, a survey of the distribution of chloride concentrations was conducted on five lakes characteristic of the southern Baltic coast: Jamno, Bukowo, Wicko, Kopań and Łebsko. It was observed that seawater intrusions into the coastal lakes only resembles those that occur in classic estuaries, though the results are similar to seawater intrusion processes. In the Polish section of the southern Baltic coast, coastal lakes are not the only places where these phenomena are observed. We suggest that all inland water bodies that are under the influence of marine intrusions should be called coastal waters, instead of the misleading term estuary.

11

Fine organic particles in a sandy beach system (Puck Bay, Baltic Sea)

Kotwicki L., Węsławski J. M., Szałtynis A., Stasiak A., Kupiec A.

Oceanologia

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2005

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No. 47 (2)

165-180

EN

A total of over 550 samples of particulate organic matter (POM) were obtained from swash and groundwater samples taken on a monthly basis from seven localities on the sandy shores of Puck Bay in 2002 and 2003. Sandy sediment cores from the swash zone were collected to assess the amount of POM in the pore waters. The mean annual concentrations of POM varied between localities from 20 to 500 mg in groundwater and from 6 to 200 mg dm-3 in swash water. The carbon/nitrogen (C/N) ratio in suspended matter was always higher in groundwater (annual mean 12) than in swash water (annual mean 7). The C/N ratio indicates a local, algal origin of POM in the shallow coastal zone.

12

Polish Navy operations in littoral waters 2002 and beyond

Miler R.

Zeszyty Naukowe Akademii Marynarki Wojennej

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2002

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R. 43 nr 3 (151)

167-176

EN

The paper presents some of the most important present and future aspects of Polish Navy acting as a littoral navy in changing environment. On the background of the specific Baltic environment elements and common for all the coastal states directions of navy development, main factors having influence on Polish Navy status role and shape are pointed. Additionaly the most expected changes inside the Polish naval forces are presented

PL

W opracowaniu przedstawiono problematykę uwarunkowań strategicznych i koncepcyjnych funkcjonowania struktur MW RP jako sił operujących w środowisku wód przybrzeżnych. Dokonano syntezy czynników politycznych, technologicznych i środowiska M. Bałtyckiego, determinujących przyszłą strukturę sił MW RP w bliższej i dalszej perspektywie czasowej. Na tle wybranych ogólnych koncepcji rozwoju zostały zaprezentowane postulowane kierunki przeobrażeń potencjału MW RP rozumianej jako Marynarka Nowej Generacji

13

Attenuation of ultraviolet irradiance in North European coastal waters

Aas E., Hojerslev N. K.

Oceanologia

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2001

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No. 43 (2)

139-168

EN

A total of 439 measurements of downward ultraviolet irradiance in North European coastal waters have been analysed, half of which have been taken from other authors. The depths Z(10%) where the irradiance is reduced to 10% of its surface value vary by one order of magnitude in the open coastal waters, both at wavelengths of 310 nm (0.3–10.4 m) and 380 nm (1.2–13.0 m). In the fjords and estuaries the depth ranges are reduced to 0.08–6.1 m at 310 nm and 0.18–7.7 m at 380 nm. Mixing with saline ocean waters can increase these light penetration depths to more than 10 m, while river water can reduce them to a few centimetres.