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Wyszukujesz frazę "sea coastal zone" wg kryterium: Temat


Tytuł:
Dredging works in the Polish open sea ports as an anthropogenic factor of development of sea coastal zones
Prace czerpalne w polskich portach jako czynnik antropogeniczny rozwoju brzegów morskich
Autorzy:
Staniszewska, M.
Boniecka, H.
Cylkowska, H.
Powiązania:
https://bibliotekanauki.pl/articles/111427.pdf
Data publikacji:
2016
Wydawca:
Instytut Morski w Gdańsku
Tematy:
dredged material
sea coastal zone
artificial nourishment of shores
urobek czerpalny
strefa brzegowa morza
sztuczne zasilanie brzegów
Opis:
Dredging works in ports and fairways lead to the extraction of large quantities of dredged material, which must be “disposed of.” This indirectly results in interference in the coastal zone. From the point of view of impact on the marine environment, among the most important activities is deposition of dredged material: at sea dumping sites and on artificially nourished seashores. The annual average volume of dredged material extracted as a result of deepening of the Polish open sea ports located on the southern coast of the Baltic Sea is calculated at 0.61 million m3 (years 1948–2015). Out of this volume, less than 69% of the dredged material (from 25 to 80% per year) was applied in shore infilling, and the rest was deposited at sea. This is unsatisfactory. To ensure an effective system of shore protection it is required to increase the volume of sediments intended for artificial shore nourishment, and to reduce the amount of sediment relocated to sea dumping sites, in favour of its practical applications.
Prace czerpalne w portach i torach podejściowych prowadzą do wydobywania dużych ilości urobku, który trzeba „zutylizować”. Skutkuje to pośrednio ingerencją w strefę brzegową. Z punktu widzenia wpływu na środowisko morskie najważniejsze są działania związane z odkładem urobku: na klapowiskach w morzu oraz jako sztuczne zasilanie brzegu. Średnioroczne kubatury urobku podlegającego pogłębianiu w polskich portach zlokalizowanych u wybrzeża południowego Bałtyku (lata 1948–2015) kształtowały się na poziomie 0,61 mln m3, z czego refulacji na brzegu poddano niecałe 69% urobku (od 25 do 80% rocznie), resztę odkładano w morzu. Jest to niewystarczające. W celu zagwarantowania efektywnego systemu ochrony brzegu wymagane jest zwiększenie objętości osadów przeznaczonych do sztucznego zasilania brzegu oraz zmniejszenie ilości wywożonego osadu na klapowiska, na rzecz jego praktycznych zastosowań.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2016, 31, 1; 173-180
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wind influence on the formation of nearshore currents in the southern Baltic: mumerical modelling results
Autorzy:
Sokolov, A.
Chubarenko, B.
Powiązania:
https://bibliotekanauki.pl/articles/241238.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
currents
waves
numerical modelling
coastal zone
Baltic Sea
Opis:
A two-dimensional numerical model was used for a simulation of vertical average longshore currents generated by both wind friction and wind-wave action in the nearshore zone. The modelling domain includes the southern part of the Baltic Proper (all boundaries were closed). Wind, uniform in space and varying in time, was the only forcing in the model. The correlation coefficient higher than 0.8 was obtained by model calibration versus the field measurements of currents conducted at the Lubiatowo field station (southern Baltic) during about 1.5 months in 2006. Comparative simulations of total currents including both wind-induced drift and wave components, and of total currents including only a wind-induced drift component, showed that the input of the drift component into currents in the nearshore zone is greater than commonly believed. Wind-induced drift strongly dominates outside the zone of wave transformation, and its input into the total resulting currents remains noticeable even in a zone between the shoreline and the depth of the first wave breaking. Thus, wind-induced drift constitutes up to 50% of the resulting longshore currents for longshore winds and no less than 20% of the longshore component of currents for winds at 45 degrees to the longshore direction.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2012, 59, 1-2; 37-48
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of the bristleworm (Pygospio elegans Claparede) (Spionidae) and its role in the Polish coastal zone of the Baltic Sea
Charakterystyka wieloszczeta (Pygospio elegans Claparede) (Spionidae) i jego rola w polskiej strefie przybrzeżnej Morza Bałtyckiego
Autorzy:
Piesik, Z.
Obolewski, K.
Wolikowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/84885.pdf
Data publikacji:
2008
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
polychaete
Pygospio elegans
Spionidae
Polish coastal zone
coastal zone
Baltic Sea
biomass
population density
marine zoobenthos
Opis:
Quantitative aspects of the spionid polychaete Pygospio elegans population in the Polish coastal zone of the Baltic Sea, in estuarine areas of Pomeranian river mouths were investigated. The fre-quency of occurrence (F) of P. elegans in the Polish coastal zone averaged 54% (permanent spe-cies) and ranged from 20 to 80%. The polychaete abundance along the Central Pomeranian coast peaked at 1 837 ind. m-2, the mean abundance being 175.7 ind. m-2. The density of the spionid worm in the Middle Pomerania was low and rarely exceeded 1 000 ind. m-2. The mean wet weight biomass of P. elegans in different areas was low (max. 0.29 gww m-2). The abundance of P. elegans in the river mouth areas (estuaries) was basically higher west of the mouth, in areas less exposed to polluted and freshened riverine water; water in those areas, however, carried lower bioseston loads, which affected trophic conditions.
Badania dotyczyły ilościowych aspektów populacji Polychaeta – Pygospio elegans (Claparede) w polskiej strefie przybrzeżnej Morza Bałtyckiego oraz w obszarach przybrzeżnych ujść pomorskich rzek. Częstość występowania (F) P. elegans w polskiej strefie przybrzeżnej wyniosła 54% i wahała się od 20 do 80%. Zagęszczenie tego Polychaete wzdłuż wybrzeża środkowego osiągnęło maksymalnie 1837 osobn. m-2 (x = 175,7 osobn. m-2) i w miejscach występowania rzadko przekraczało 1000 osobn. m-2. Średnia biomasa mokra P. elegans w badanym obszarze była niska (maksimum 0,29 gmm m-2). Zagęszczenie P. elegans w strefie estuariowej (ujścia rzek) było zasadniczo wyższe na zachód od ujść, w obszarach mniej narażonych na zanieczyszczanie i wpływ wód rzecznych niosących znaczne ilości biosestonu odpowiedzialnego za wzrost warunków troficznych.
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2008, 12
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The history of coastal lakes studies with a special regard to Lake Gardno
Autorzy:
Paturej, E.
Powiązania:
https://bibliotekanauki.pl/articles/84791.pdf
Data publikacji:
2001
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
history
coastal lake
lake
Lake Gardno
Baltic Sea
coastal zone
water exchange
sea water
lake water
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2001, 05
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical analysis of Mediterranean coastal storms
Autorzy:
Martzikos, N.T.
Prinos, P.E.
Memos, C.D.
Tsoukala, V.K.
Powiązania:
https://bibliotekanauki.pl/articles/2079010.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Mediterranean Sea
storm
extreme event
coastal zone
statistical analysis
Opis:
Coastal storms as extreme hydrometeorological events have severe impacts on the coasts and consequently affect the coastal communities, attracting considerable research interest nowadays. Attempting to understand the risk of these extreme events, a coastal storm analysis is accomplished by studying the parameters which define a coastal storm and their properties, such as the wave height, the wave period, the duration, the calm period, and the storm energy. The frequency of occurrence of coastal storms, the thresholds of storm parameters and the way they are interrelating with each other draw a rough outline of wave climate during coastal storm events for a specific location. This information is valuable afterwards for the design of coastal structures and the coastal zone management. In this work, buoy datasets from 30 locations in the Mediterranean Sea are analysed for describing coastal storm activity. A sample of 4008 coastal storms is identified. Each location faces around 10—14 coastal storms per year, with most of them to occur in winter months and their characteristics to be sitedependent. Their average duration is lower than 30 hours, and 25% of them are consecutive events which hit the same location in less than a day. Furthermore, the wave period and the main direction present no remarkable fluctuations during a coastal storm. With this analysis, a deeper understanding of coastal storm severity is pursued, gaining knowledge about their past activity, in order to be prepared in the future and to protect the coastal areas.
Źródło:
Oceanologia; 2021, 63, 1; 133-148
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sea salt emission from the coastal zone
Autorzy:
Petelski, T.
Chomka, M.
Powiązania:
https://bibliotekanauki.pl/articles/47593.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
emission
sea salt
aerosol
flux
marine aerosol
Opis:
The paper presents the findings of experiments to determine marine aerosol emission from the coastal zone. A relation between aerosol flux and wave energy dissipation was found. The emission fluxes calculated for the distribution of aerosol concentration are proportional to the dissipation of wave energy to the power of 3/4. The calculations were carried out using the experimental data obtained during the TABEX and BAEX experiments.
Źródło:
Oceanologia; 2000, 42, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of common bivalves in the Polish coastal zone of the Baltic Sea
Rozmieszczenie pospolitych małży w polskiej strefie przybrzeżnej Bałtyku
Autorzy:
Piesik, Z.
Obolewski, K.
Strzelczak, A.
Powiązania:
https://bibliotekanauki.pl/articles/85235.pdf
Data publikacji:
2009
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
distribution
common bivalve
bivalve
Polish coastal zone
Baltic Sea
coastal zone
density
Macoma balthica
Mytilus edulis
Cerastoderma glaucum
Opis:
The populations of common Baltic bivalves Macoma balthica, Mytilus edulis and Cerastoderma glaucum were studied in the Polish coast (up to 4 Nm), both in estuary and open coastal zones of the Middle Pomerania as well as in the Puck Bay and the Gulf of Gdańsk (up to 2 Nm). The following parameters were investigated: density of the bivalves and environmental conditions (distance from the shore, substrate type, coast type, depth). Relationships between environmental conditions and abundance of the consecutive bivalve species were analysed with the help of ordination method (redundancy analysis RDA) and multivariate regression trees (MRT). RDA analysis indicated that C. glaucum density depended mainly on the localisation along the coast while M. edulis occurrence was governed by the distance from the shore and depth. Only density of M. balthica depended evenly on all the environmental parameters. MRT analysis revealed that the main factors influencing the distribution of bivalves were sediment granularity and depth.
Badano populację pospolitych bałtyckich małży Macoma balthica, Mytilus edulis i Cerastoderma glaucum w polskiej strefie przybrzeżnej (do 4 Nm) w strefach estuariowych i otwartego wybrzeża Pomorza Środkowego oraz strefie Zatoki Puckiej i Gdańskiej (do 2 Nm). Określono zagęszczenie badanych gatunków w wodach przybrzeżnych, w tym w rejonach ujść rzek Wieprzy, Słupi, Łupawy i Łeby oraz na obszarze Zatoki Puckiej i Gdańskiej, a także warunki środowiskowe (odległość od brzegu, typ podłoża, typ wybrzeża, głębokość). Z wykorzystaniem metod ordynacyjnych (RDA) oraz drzew regresyjnych (MRT) ustalono znaczenie poszczególnych parametrów środowiskowych dla każdego z gatunków małży. Według RDA zagęszczenie C. glaucum związane jest głownie z miejscem wybrzeża, natomiast M. edulis z odległością od brzegu i głębokością. Jedynie zagęszczenie M. balthica było równocześnie uzależnione od wszystkich parametrów. Drzewo regresyjne (MRT) wytypowało główny czynnik, jakim była w pierwszej kolejności ziarnistość osadów, a następnie głębokość.
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2009, 13 part II
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sulphates in particles of different sizes in the marine boundary layer over the Southern Baltic Sea
Autorzy:
Falkowska, L.
Lewandowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/48464.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
marine boundary layer
sulphate
aerosol
concentration
Baltic Sea
Opis:
Concentrations of sulphate ions and particle size distributions were measured in the marine boundary layer using a ten-cascade Berner impactor at Hel between December 1997 and March 1998, and with a filter packin Gdynia from February to May 2001. In the marine boundary layer over the Hel Peninsula the presence of natural sea-salt and non-sea-salt sulphate ions (nssSO4 2−) was confirmed in the aerosols. The nssSO4 were present in all size ranges only in December 1997 and in the first half of January 1998, making up an average of 83.7±2.4% of the total sulphate content. In the other winter months, nssSO4 2− were recorded only in aerosols of diameters from 0.4 to 1.5 μm, and their average contribution dropped by over 20%. The extended growing season in the Southern Baltic resulted in the formation of fine particles that appeared in the marine boundary layer in early winter. At that time the proportion of nssSO4 2− in ultra-fine particles ranged from 75.7% to 100%. The concentration of nssSO4 2−, which varied from 0.8 to 2.3 nmol m−3 in particles < 0.4 μm in size probably constituted the natural background aerosol population in the relatively clean coastal environment of the Southern Baltic Sea. In the coastal urbanised area of Gdynia, the sulphate concentration in aerosols was higher than at Hel (av. 75.3 nmol m−3) but the proportion of nssSO4 was low, of the order of 24%. Sea salt was then the dominant source of sulphate.
Źródło:
Oceanologia; 2004, 46, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Is the bristleworm Pygospio elegans Claparede (Spionidae) realy a deposit-feeder?
Czy wieloszczet Pygospio elegans Claparede (Spionidae) naprawdę żywi się materiałem zgromadzonym w osadach?
Autorzy:
Piesik, Z.
Obolewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/84857.pdf
Data publikacji:
2007
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
polychaete
Pygospio elegans
Spionidae
deposit
feeding
Baltic Sea
coastal zone
Opis:
Gut contents of Pygospio elegans Claparede (Spionidae) individuals collected in the Polish coastal zone of the Baltic were analysed. Guts of almost all the P. elegans (89-100%) were found to contain sand grains and detritus. Microalgae (Bacillariophyta, Chlorophyta, Flagellata) occurred in the guts of 8-100% P. elegans individuals. Noteworthy was the finding, in the P. elegans gut contents, of oligochaeta remains, indicative of some predatory behaviour of the polychaete. The oligochaete contribution to the P. elegans food increased with polychaete size (from 33 to 100%). Therefore, P. elegans in the Baltic population should be regarded as omnivores rather than suspension feeders- deposit feeders they have been classified with so far.
Analizowano zawartość przewodu pokarmowego Pygospio elegans Claparede (Spionidae) żyjącego w polskiej strefie przybrzeżnej Bałtyku. Jelita P. elegans zawierały prawie wyłącznie (89-100%) piasek i szczątki organiczne. Microalgae (Bacillariophyta, Chlorophyta, Flagelant) wystąpiły w jelitach P. elegans w ilościach od 8 do 100%. Godne uwagi było odkrycie, wewnątrz zawartości jelit P. elegans, resztek oligochaeta, co wskazuje na drapieżne zachowania tego wieloszczeta. Udział skąposzczetów w diecie P. elegans był w niektórych badanych rejonach znaczny (33-100%). Dlatego też P. elegans powinien zostać zaliczony do zwierząt wszystkożernych, a nie, jak dotychczas, do filtratorów eliminujących bioseston.
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2007, 11
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Driving forces of sandy sediment transport beyond the surf zone
Autorzy:
Stella, M.
Ostrowski, R.
Szmytkiewicz, P.
Kapinski, J.
Marcinkowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/47878.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
sandy sediment
sediment transport
surf zone
wave-current interaction
roughness
coastal zone
Baltic Sea
Źródło:
Oceanologia; 2019, 61, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aspects of Pollution in Gdansk and Gdynia Harbours at the Coastal Zone of the South Baltic Sea
Autorzy:
Radke, B.
Piketh, S.
Wasik, A.
Namieśnik, J.
Dembska, G.
Bolałek, J.
Powiązania:
https://bibliotekanauki.pl/articles/117018.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Baltic Sea
coastal zone
Port of Gdynia
Port of Gdańsk
Opis:
Organotin compounds (OTC), as well as metals, are toxic to many organisms. Even at very low concentrations OTC and metals can have several negative effects. The paper discusses key issues relating to the location of harbours in the coastal zone (including near the river mouths and semi‐closed access to the sea) and the pollution of harbour sediments with heavy metals (e.g. zinc, copper, nickel and lead) and organotin derivatives (e.g. butyltin, phenyltin, octyltin, and tricyclohexyltin), using the examples of the Gdańsk and Gdynia ports. The authors have described key spatial factors of the two ports which largely determine sedimentation processes. It has been shown that the heavy metals content in the sediments of the Port of Gdańsk does not exceed the concentration values permitted by Polish law, however, the problem with the establishment of standard concentration levels for organotin derivatives remains.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 1; 11-18
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Observations of new particle formation events in the South-Eastern Baltic Sea
Autorzy:
Plauskaite, K.
Ulevicius, V.
Spirkauskaite, N.
Bycenkiene, S.
Zielinski, T.
Petelski, T.
Ponczkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/48201.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
meteorological parameter
chemical parameter
solar radiation
coastal region
coastal site
marine environment
Mediterranean coastal zone
Opis:
New particle formation and growth were observed at a coastal site (Preila station, Lithuania) during 1997 and 2000–2002. The total amount of data analysed covers 291 one-day periods, 45 (15%) of which were long-term, new particle formation days. Short-term nucleation events (from a few minutes to one hour) and long-term events (from one to eight hours) were identified. The mean particle growth rate, condensation sink and condensable vapour source rate during nucleation events were 3.9 nm h−1, 1.45 × 10−3 cm−3 s−1 and 7.5 × 104 cm−3 s−1 respectively. The average formation rate J10 was 0.4 cm−3 s−1. The nucleation events were accompanied mainly by air masses transported from the north (43%) and north-west (19%). Meteorological parameters and trace gas (O3, SO2, NO2) concentrations were also analysed. It was found that nucleation events are related to high levels of solar radiation.
Źródło:
Oceanologia; 2010, 52, 1; 53-75
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aspects of water quality and transport modelling in the Oder Estuary (Southern Baltic Sea): background, strategy and example
Autorzy:
Schernewski, G.
Neumann, T.
Podsetchine, V.
Wielgat, M.
Tejakusuma, I.
Powiązania:
https://bibliotekanauki.pl/articles/241098.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
water quality
transport modelling
Odra estuary
Baltic Sea
coastal zone management
coastal water management
Opis:
Various types of utilization, conflicting interests and environmental problems call for coastal water management as part of an integrated coastal zone management. This is especially necessary for the Oder (Odra) estuary at the German/Polish border. The river Oder causes severe, ongoing and large scale eutrophication, which limits the ecological and economic value of its adjacent coastal ecosystems. Simulation models are an important tool with which to tackle these practical problems and support management. We present a general concept of a decision support system with an integration of sub-models. Two types of models for long-term water quality forecasts and scenario simulations, as well as short-term prediction of water pollution are available at present. Spatial human-pathogenic virus transport and decay simulations are used as an example to demonstrate their practical use.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2001, 48, 3; 111-122
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ammonia and ammonium over the Southern Baltic Sea. Part 2. The origin of ammonia and ammonium over two coastal stations: Gdynia and Hel
Autorzy:
Lewandowska, A.
Falkowska, L.
Beldowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/48111.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
Gdynia
aerosol
ammonium
ammonia
concentration
Hel Peninsula
Baltic Sea
Opis:
Ammonia concentrations in aerosols and ammonium concentrations in the air were measured in the coastal zone of the southern Baltic Sea. The main study area was the Hel Peninsula, where measurements were carried out from December 1997 to March 1998. There was a second such area in Gdynia, where the first measurement period extended from May to December 2000, and the second one lasted from February to May 2001. At the same time, chloride, sulphate and sodium concentrations in the aerosols were determined; meteorological parameters were also measured. Aerosol samples were collected with a filter pack, and the gaseous phase species were collected on denuders. At both stations, the ammonium concentration in aerosols was at least one order of magnitude higher than that of the ammonia in the air samples. It was found that the marine boundary layer always contained ammonium chloride and ammonium sulphate. The presence of ammonium nitrate was detected only when winds were slight and was attributed to local anthropogenic sources. The ammonia concentration related to nitrate increased with rising air humidity and a falling temperature. The contribution of marigenic ions in aerosols was noted at onshore wind of speeds > 3.5 m s−1. In winter as in summer, conditions occurred facilitating light backscattering by a ‘wet’ aerosol, which contained ammonium nitrate and ammonium sulphate in proportions of 2.5:1 and 1:1.
Źródło:
Oceanologia; 2004, 46, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanoflagellates in the Gdańsk Basin: coexistence between forms belonging to different trophic types
Autorzy:
Rychert, K.
Powiązania:
https://bibliotekanauki.pl/articles/48978.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
mixotrophic form
biomass
nanoflagellate
Baltic Sea
Gdansk Basin
chlorophyll
Opis:
Nanoflagellates are important bacterivores, but their role is often underestimated because forms capable of phagotrophy and containing chlorophyll (mixotrophs) are excluded from analyses. Research conducted in the coastal zone of the Gdańsk Basin (Baltic Sea) revealed seasonal changes in the relationship between the biomasses of small (1–8 μm) nanoflagellates with (NFChl+) and without chlorophyll (NFChl–). Three distinct patterns were distinguished: (i) spring, when the biomass of NFChl+ was lower than that of NFChl–, (ii) summer and autumn, when NFChl+ were dominant (about 90%), and (iii) late autumn and winter, when the prevalence of NFChl+ was lower (71–79%). Additional studies showed the existence of spatial differences in the composition of the nanoflagellate community. These spatial differences were not shaped by freshwater input. The possible importance of mixotrophic forms in the Gdańsk Basin is discussed.
Źródło:
Oceanologia; 2006, 48, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł

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