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Tytuł:
Wystepowanie organizmow wodnych w wodociagach i wynikajace stad problemy dezynfekcji wody do picia.Czesc I.
Occurrence of aquatic organisms in water piping and the resulting problems of drinking water disinfection.Part I.
Autorzy:
Plachta, J
Ranke-Rybicka, B.
Wichrowska, B.
Zycinski, D.
Powiązania:
https://bibliotekanauki.pl/articles/872386.pdf
Data publikacji:
1992
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
inzynieria sanitarna
woda pitna
wodociagi
sinice
jakosc
zanieczyszczenia srodowiska
zanieczyszczenia wod
glony
choroby czlowieka
wirusy
substancje toksyczne
wody powierzchniowe
okrzemki
bakterie
dezynfekcja
sanitary engineering
drinking water
water supply system
cyanoprokaryota
quality
environment contaminant
water contaminant
alga
human disease
virus
toxic substance
surface water
diatom
bacteria
disinfection
Opis:
Stwierdzono, że w uzdatnionej wodzie wodociągowej występują martwe i żywe organizmy planktonowe, których liczebność wynosi od kilku do kilku tysięcy osobników. Mogą one stać się przyczyną wtórnego zanieczyszczenia bakteryjnego wody dezynfekowanej, a tym samym stanowią poważny problem w uzdatnianiu wody do picia.
The present text is the first part of a paper aimed at specification of the requirements ensuring effective disinfection of drinking water. The discussed health hazards result not only from the presence of pathogenic microorganisms in water, but also from the occurrence of micro-and macroscopic plant and animal organisms. It was shown that while the traditional method for water treatment and disinfection reduces the number of these organisms, it fails to eliminate them completely, particularly in the case of tap water intake from shore intakes of surface waters.
Źródło:
Roczniki Państwowego Zakładu Higieny; 1992, 43, 1; 95-100
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cadmium concentrations in the Bahia Blanca Estuary (Argentina). Potential effects of dissolved cadmium on the diatom Thalassiosira curviseriata
Autorzy:
Andrade, S.J.
Pucci, A.E.
Marcovecchio, J.E.
Powiązania:
https://bibliotekanauki.pl/articles/48820.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Argentina
cadmium concentration
Bahia Blanca Estuary
potential effect
toxicity
Thalassiosira curviseriata
estuary
diatom
Opis:
Concentrations of dissolved and particulate cadmium were measured in the water of the Bah´ıa Blanca Estuary, one of the most highly industrialised regions in Argentina. Simultaneously, Cd contents were also determined in samples of phytoplankton. Thus, the estuary was characterised from the viewpoint of Cd occurrence. Additionally, a microscale environment was selected within the estuary in order to carry out an ecotoxicological study. Thus, environmental parameters (i.e. temperature, salinity, nutrients, chlorophyll a) were measured weekly at Puerto Cuatreros (in the inner estuary) during winter, when the phytoplankton bloom occurs; during the other seasons sampling was done twice a week. In addition, cells of the diatom Thalassiosira curviseriata – the dominant species in the phytoplankton bloom – were isolated and cultivated in the laboratory. The monoclonal cultures obtained were exposed to increasing concentrations of Cd under controlled environmental conditions and the growth rate inhibition was measured. As a preliminary conclusion it was found that Cd levels in the Bah´ıa Blanca Estuary are significantly lower than the EC50 value for T. curviseriata.
Źródło:
Oceanologia; 2000, 42, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diatoms of the genus Gomphonema Ehr. [Bacillariophyceae] from a karstic stream in the Krakowsko-Czestochowska Upland
Autorzy:
Wojtal, A
Powiązania:
https://bibliotekanauki.pl/articles/57131.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
ecology
Polska
Krakow-Czestochowa Upland
stream
Gomphonema
taxonomy
diatom
Bacillariophyceae
Opis:
This paper presents the results of a floristic study focusing on taxa representing the genus Gomphonema in Kobylanka stream, situated ca 30 km NW of Kraków. Species belonging to the genus Gomphonema Ehr. were very frequently observed diatom taxa in the material studied. Amongst 272 diatom taxa recorded in the studied material, 13 belong to this genus. Some of them are widespread and often found in Poland; others such as Gomphonema micropus Kutz. and G. sarcophagus Greg. are rarely or for the first time reported from the Kraków-Częstochowa Upland. G. brebissonii Reichardt, G. lagerheimii A. Cl. and G. parallelistriatum Lange-Bert. and Reichardt are new to the Polish flora. Identification of the diatom flora was based on light (LM) and scanning electron microscopy (SEM). Morphological characters and dimensions of frustules were measured for all taxa reported. Ecological requirements, remarks on distribution, and photographic documentation are also given.
Źródło:
Acta Societatis Botanicorum Poloniae; 2003, 72, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of iron limitation on cells of the diatom Cyclotella meneghiniana Kützing
Autorzy:
Lewandowska, J.
Kosakowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/47921.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
iron
chlorophyll a
cell
Cyclotella meneghiniana
protein
aquatic ecosystem
Baltic Sea
growth
diatom
limitation
Opis:
The response of the Baltic diatom Cyclotella meneghiniana to iron deficiency was examined. The following growth parameters were measured: cell number, chlorophyll a and protein content. The results demonstrate the ability of this diatom to grow well with minimal iron availability; however, the rate of growth fell markedly at the lowest iron(III) concentration. The results of spectrophotometric chlorophyll a measurements and protein assays using the Lowry and Bradford methods indicated a significant decrease in their quantities. Iron may therefore be an important regulatory factor controlling the growth of diatom C. meneghiniana in an aquatic ecosystem.
Źródło:
Oceanologia; 2004, 46, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two climatic oscillations during the eemian interglacial : preliminary results of multi-proxy researches of palaeolake at solniki, Ne Poland
Autorzy:
Kupryjanowicz, M.
Ciszek, D.
Morosław-Grabowska, J.
Marciniak, B.
Niska, M.
Powiązania:
https://bibliotekanauki.pl/articles/1186083.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
pyłek
okrzemka
Cladocera
izotopy stabilne
podatność magnetyczna
zmiany klimatu
interglacjał eemski
północno-wschodnia Polska
pollen
diatom
cladocera
stable isotopes
magnetic susceptibility
climate changes
Eemian Interglacial
NE Poland
Opis:
W Solnikach na Wysoczyźnie Białostockiej (północno-wschodnia Polska) odkryto serię osadów jeziornych reprezentujących interglacjał eemski i wczesny vistulian. Wstępne wyniki badań interdyscyplinarnych (analiza pyłkowa, okrzemkowa i Cladocera, pomiary podatności magnetycznej osadów oraz zawartości izotopów stabilnych tlenu i węgla) wykorzystano do zilustrowania zmian klimatu podczas interglacjału eemskiego. Udokumentowano dwie gwałtowne oscylacje klimatu - pierwsza z ciepłym i bardzo wilgotnym klimatem (?opady) miała miejsce w środkowej części poziomu pyłkowego E5 Carpinus, druga z klimatem suchym i bardzo zimnym - w środkowej części poziomu E7 Pinus.
Źródło:
Polish Geological Institute Special Papers; 2005, 16; 53--57
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algoflora and vascular flora of a limestone spring in the Warta River valley
Autorzy:
Zelazna-Wieczorek, J
Maminska, M.
Powiązania:
https://bibliotekanauki.pl/articles/58215.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
alga
macroalga
flora
vascular plant
limestone
spring
diatom
Warta River
Warta valley
environmental preference
Opis:
Qualitative analysis of algae, including microhabitats and vascular vegetation in a spring niche, together with basic physical and chemical characteristics is presented. 175 diatom taxa as well as taxa of macroalgae and vascular plants were determined in the spring niche, and the community types were defined. Seasonal variability of diatom communities was observed. The influence of a flood as a catastrophe on the community of diatoms and macroalgae was noticed.
Źródło:
Acta Societatis Botanicorum Poloniae; 2006, 75, 2; 131-143
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diatoms of the Rosnowskie Duze Lake in the Wielkopolska National Park in the years 2002 and 2003
Okrzemki jeziora Rosnowskiego Duzego w Wielkopolskim Parku Narodowym w latach 2002 i 2003
Autorzy:
Celewicz-Goldyn, S.
Powiązania:
https://bibliotekanauki.pl/articles/878492.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
nymphaeid
Wielkopolski National Park
Polska
elodeid
helophyte
eutrophic lake
phytoplankton
Lake Rosnowskie Duze
taxonomy
diatom
pelagic zone
Źródło:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2006, 10
1896-1908
Pojawia się w:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Palinologiczne i diatomologiczne badania osadów interglacjału mazowieckiego z odsłonięcia w kopalni Bełchatów
Pollen and diatom analysis of the Mazovian Interglacial deposits from the open-cast mine “Bełchatów” (Central Poland)
Autorzy:
Balwierz, Z.
Goździk, J.
Marciniak, B.
Powiązania:
https://bibliotekanauki.pl/articles/2074419.pdf
Data publikacji:
2006
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
plejstocen
analiza palinologiczna
analiza diatomologiczna
intergracjał mazowiecki
pollen stratigraphy
diatom stratigraphy
palynology
Mazovian Interglacial
Middle Pleistocene
Central Poland
Opis:
The thickness of Pleistocene deposits in the Kleszczów Graben reach 300 m. Data from these deposits are important for stratigraphic schemes of the Pleistocene of Poland. However, up to now the Mazovian Interglacial deposits were recognized from boreholes only, not from the exposures in the open-cast mine and they comprise incomplete interglacial successions. The present analysis of organic deposits from closed depression exposed on the escarpment of the mine,reveals almost the full pollen succession of the Mazovian Interglacial. The succession started with dominance of birch forest followed by birch-pine and afterwards birch-pine forest with increasing share of alder, spruce and thermophilous trees that led to development of mixed forest which corresponded to climatic interglacial optimum. First there were forests with share of yew which later were replaced by hornbeam and fir. The fir-hornbeam phase closed the climatic optimum. The distinctly colder pine phase following fir-hornbeam phase ended the interglacial succesion of plants in Folwark 93K site. On the basis of changes in diatom composition and relative (percentage) diatom frequency in this site it was determined that the fossil lake sediments represent the diatom succession of the Mazovian Interglacial. The diatom succession from Folwark has been divided into 7 local diatom assemblage zones (LDAZ Fd 1–Fd7). These zones represent four stages of paleolake development and correspond to the local and regional pollen assemblage zones of the Mazovian Interglacial. The Mazovian Interglacial age of the organic deposits from the site Folwark 93K implies the revision of the stratigraphical position of some lithostratigraphic units from the Middle Pleistocene in the Kleszczów Graben. The obtained results indicate also that at least some intensive deformations of the Lower Pleistocene deposits were completed before the Mazovian Interglacial.
Źródło:
Przegląd Geologiczny; 2006, 54, 1; 61-67
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The first observed bloom of the diatom Dactyliosolen fragilissimus (Bergon) Hasle 1996 in the Gulf of Gdańsk
Autorzy:
Lotocka, M.
Powiązania:
https://bibliotekanauki.pl/articles/47455.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
biomass
coastal water
bloom
Baltic Sea
phytoplankton
Gdansk Gulf
diatom
Dactyliosolen fragilissimus
Opis:
The diatom Dactyliosolen fragilissimus (Bergon) Hasle 1996 (syn. Rhizosolenia fragilissima Bergon 1903) occurs in the western Baltic Sea predominantly in summer, sometimes forming blooms. In autumn 2005, numerous D. fragilissimus cells were observed for the first time in the coastal waters of the Gulf of Gdańsk. In November 2005a bloom was formed: at its peak, the diatom count was 1.1×106 cells dm−3 and its biomass was 8.9 mg dm−3.
Źródło:
Oceanologia; 2006, 48, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany żyzności trofii w ekosystemach miękkowodnych jezior Borów Tucholskich
Changes of trophy in soft water lakes of Tuchola Pinewoods (N Poland).
Autorzy:
Milecka, K.
Bogaczewicz-Adamczak, B.
Powiązania:
https://bibliotekanauki.pl/articles/2074418.pdf
Data publikacji:
2006
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
jezioro miękkowodne
badania paleoekologiczne
osad denny
badania pyłkowe
Bory Tucholskie
soft water lakes
pollen analysis
diatom analysis
trophy changes
Holocene
Tuchola Pinewoods
Opis:
Soft water lakes are mostly acid, poor in minerals and have a lot of free CO2 in their water and bottom sediments. So called Lobelia lakes, containing Lobelia dortmanna L., Isoëtes lacustris L., and Littorella uniflora (L.) Ascherson, are a type of soft water lakes. These species are rare in Poland and in Europe mainly because of eutrophication and anthropopression. Lobelia lakes and ecology of isoetids were described in many scientific articles, but their history is poorly recognised. Thus, for some years palaeoecological research has been done in the Tuchola Pinewoods to reveal the time of migration, spreading and development of Lobelia lakes. Pollen analysis and diatom analysis were done for the sediments of lakes: Nierybno, Okoń Duży, Linowskie, Moczadło and Nawionek (Fig. 1). Content of plant remains of Lobelia dortmanna nad Isoëtes lacustris, fossil diatoms and Pediastrum indicates phases of low and high trophy of Lake Nierybno (Fig. 5). The highest trophy was found in the Younger Dryas, in the middle Boreal Period and the oldest time of Subboreal Period. The lowest trophy was observed at the beginning of the Holocene, in the Atlantic Period and in modern times. Low trophy of the lake is related to acid or neutral pH of the water. Reconstruction of the lake history based on diatom analysis shows two main phases of the Nierybno ecosystem existence. In the early stages of the lake’s development it was an eutrophic basin with elevated pH. At the beginning of the Atlantic Period the pH decreased and content of nutrients in the water was reduced. Navicula radiosa, N. leptostriata and N. heimansioides, species typical for Lobelia lakes have been present since then. Generally Lobelia lakes are well preserved in the Tuchola Pinewoods due to low anthropopression and conservation activity of the Tuchola Pinewoods National Park and the Zaborski Landscape Park.
Źródło:
Przegląd Geologiczny; 2006, 54, 1; 81-86
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stanowisko osadów jeziornych interglacjału murawińskiego (eemskiego) w Rumlówce koło Grodna (Białoruś)
A locality with lacustrine deposits representing the Muravian (Eemian) Interglacial in Rumlówka near Grodno (Belarus)
Autorzy:
Marciniak, B.
Jełowiczewa, J.
Lindner, L.
Sańko, A.
Powiązania:
https://bibliotekanauki.pl/articles/2063179.pdf
Data publikacji:
2007
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
zlodowacenie poozierskie (wisły)
pollen
diatom and faunal studies
Muravian (Eemian) Interglacial
Poozerian (Vistulian) Glaciation
palinologia
okrzemki
fauna
interglacjał murawiński (eemski)
Opis:
Przedstawiono główne wyniki badań interdyscyplinarnych osadów jeziornych w Rumlówce koło Grodna. Osady te reprezentowane są przez kredę i mułki ilaste, a przykryte są przez piaski i piaski ze żwirem stanowiące osady fluwioperyglacjalne i deluwialne najwyższego (VI) tarasu Niemna. Badaniami palinologicznymi objęto górną część kredy i mułku ilastego w profilu Rumlówka 2. Obejmują one młodszą część (od fazy Carpinus do fazy Betula+Pinus+NAP) interglacjału murawińskiego (eemskiego) i najstarszą część zlodowacenia poozierskiego (wisły). Badania diatomologiczne młodszej części osadów interglacjału murawińskiego pozwoliły na wydzielenie w nich pięciu lokalnych poziomów okrzemkowych (Local Assemblage Zones L DAZ DR-1 do DR-5), a na ich podstawie pięciu stadiów rozwoju ówczesnego jeziora, od głębokiego, oligotroficznego przez oligomezotroficzne, z często zmieniającym się poziomem wody, do eutroficznego, wyraźnie się wypłycającego. Analiza licznych szczątków malakofauny oraz zębów i kości ssaków, zachowanych zarówno w wymienionych osadach jeziornych, jak i przykrywających je osadach rzecznych, wykazała wzajemne przenikanie się form ciepło- i zimnolubnych. Jest to zjawisko typowe dla schyłkowej części ostatniego interglacjału (murawińskiego, eemskiego) i początkowej części ostatniego zlodowacenia (poozierskiego, wisły) na obszarze środkowej Europy.
The paper presents results of multi-disciplinary studies of the lacustrine deposits from Rumlówka near Grodno. Geological studies show that the strata are represented by marls and clayey silts and are covered by sands and sands with gravel representing of the fluvioperiglacial and deluvial accumulation of the highest (VI) terrace of Niemen. Pollen analyses were conducted in the upper part of the marls and clayey silts in the Rumlówka 2 section. These deposits correspond to the younger part (from the Carpinus to the Betula+Pinus+NAP phase) of the Muravian (Eemian) Interglacial and the oldest part of the Poozerian (Vistulian) Glaciation. Diatom analyses of the younger part of the Muravian Interglacial allowed distinguishing five Local Assemblage Zones L DAZ DR-1 to DR-5, and as a result, also five stages of the lake evolution, from deep basin (oligotrophic lake), through a reservoir with oscillating water level (oligo-mesotrophic lake), to a distinctly shallowing environment (eutrophic lake). The analysis of abundant malacofauna along with teeth and bones of mammals preserved both in the lake deposits as well as in the overlying fluvial deposits indicated intermingling of thermo- and cryophilous forms. This phenomenon is typical of the terminal part of the last interglacial (Muravian, Eemian) and the initial part of the last slaciation (Poozerian, Vistulian) in Central Europe.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2007, 425; 75-86
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pollen and diatom stratigraphy of the lacustrine-fluvial-swamp deposits from the profile at Domuraty, NE Poland
Autorzy:
Winter, H.
Khursevich, G.
Fedenya, S.
Powiązania:
https://bibliotekanauki.pl/articles/2060215.pdf
Data publikacji:
2008
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
north-eastern Poland
Cromerian Complex Stage
Małopolanian Interglacial
pollen analysis
diatom analysis
Opis:
Fluvio-lacustrine deposits from a boring core drilled at Domuraty, NE Poland have been examined by pollen and diatom analyses. These studies allow characterization of the development of vegetation in a long pollen sequence, and of palaeoenvironmental changes in the former basin based on quantitative and qualitative changes in diatom assemblages along the profile studied. The pollen record shows a sequence of phases with forest communities separated by phases of open vegetation. It demonstrates the impact of rapid, of lesser climate changes, as well as climatic fluctuations on terrestrial ecosystems. The age of the succession can be related to the Cromerian Complex Stages.l. (early Mid dle Pleistocene). Stage s.l. (early Mid dle Pleis to cene).
Źródło:
Geological Quarterly; 2008, 52, 3; 269-269
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review and reinterpretation of the pollen and diatom data from the deposits of the Southern Baltic lagoons
Autorzy:
Miotk-Szpiganowicz, G.
Zachowicz, J.
Uścinowicz, Sz.
Powiązania:
https://bibliotekanauki.pl/articles/1205002.pdf
Data publikacji:
2008
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
pollen and diatom analyses
lagoons
sea-level changes
Baltic Sea
Opis:
According to their origin, geomorphology and hydrology, the fresh/brackish-water bays and coastal lakes of the Southern Baltic coast can be treated as lagoons. They developed at the time of and as a result of the Atlantic (Litorina) transgression of the Southern Baltica. There are many publications about the origin and evolution of the lagoons and lakes along the Polish coast of the Southern Baltic (e.g. Przybyłowska-Lange, 1973a, b, 1974, 1979, 1981; Zaborowska, 1977; Zachowicz, 1977, 1985; Wypych, 1980a, b; Zachowicz et al., 1982; Bogaczewicz-Adamczak, Miotk, 1985a, b; Dąbrowski et al., 1985; Zachowicz, Zaborowska, 1985; Borówka et al., 2001a, b, 2002). Nevertheless, the origin of the lagoons has not been fully explained. In the light of present-day information the results of earliest investigations often need to be reinterpreted. The aim of this work was the correlation of the published and unpublished pollen and diatom diagrams from Late Pleistocene and Holocene sediments of the Southern Baltic lagoons, and their relation with radiocarbon dating. The pollen and diatom diagrams from the area of north-east Germany and the Curonian Lagoon (Kabailiene., 1999; Jahns, 2000; Kaiser et al., 2000; Endtmann, 2002; Bitinas et al., 2002) have been used for comparison. For the palynological sites, the local pollen assemblage zones (L PAZ) have been identified according to Janczyk-Kopikowa (1987). Comparison of the biostratigraphical data allowed us to define the approach time of the formation of the lagoons in their present-day position on the coast as well as to determine the periods of an accelerated sea-level rise and increased frequency of storm surges (so-called marine transgression phases) when the investigated areas had been under the direct influence of the sea. Such influences are visible about 7000, 6000, 5000 and 4000 years BP. This period of marine influences, about 1000-year long, corresponds very well to the same period of climate oscillations mentioned by Stuiver and Braziunas (1993), Stuiver et al. (1995) and Chapman and Shackelton (2000). The influence of the sea in the Post-Litorina period was associated mainly with the inflow of sea water through more or less developed barriers, so they are not synchronous.
Źródło:
Polish Geological Institute Special Papers; 2008, 23; 45-70
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of phytoplankton along the thermohaline gradient in the North-Eastern Adriatic channel; winter aspect
Autorzy:
Vilicic, D.
Kuzmic, M.
Bosak, S.
Silovic, T.
Hrustic, E.
Buric, Z.
Powiązania:
https://bibliotekanauki.pl/articles/47482.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Adriatic Sea
chlorophyll
diatom
dinoflagellate
distribution
nutrient
oligotrophic water
phytoplankton composition
picoplankton
salinity
temperature
thermohaline
transition zone
water transparency
Opis:
The distribution of phytoplankton and its relation to the hydrographic features in the north-eastern Adriatic was investigated in February 2008. The area of interest included a thermohaline gradient in the channel situated between the coast and the islands lying parallel to the coast. The gradient is controlled by the influx of oligotrophic karstic riverine water at the south-eastern end,subma rine springs in the middle part,an d warmer offshore waters at the north-western end of the channel. The change of temperature and salinity in the estuarine transition zone was accompanied by abundant diatoms and dinoflagellates below the halocline,with dominant chain-forming diatoms (Chaetoceros, Bacteriastrum) in abundances reaching 5×105 cells dm−3. The impact of coastal submarine springs detected by infrared remote sensing resulted in the growth of cyanobacteria in the nitrogen-depleted surface waters. The greater contribution of picoplankton, as well as of nanoplanktonic coccolithophorids and cryptophytes,in the outer channel system indicated their preference for oligotrophic conditions. Flow cytometric counts of nanophytoplankton were 10–30 times greater than inverted microscope counts. Cyanobacteria were about five times more abundant than picoeukaryotes. The study demonstrates how different techniques (remote sensing and in situ investigations) can be useful in understanding the biological and hydrographic set-up in the specific oligotrophic eastern Adriatic coastal environment.
Źródło:
Oceanologia; 2009, 51, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Holocene evolution of the Pomeranian Bay environment, Southern Baltic Sea
Autorzy:
Kostecki, R.
Janczak-Kostecka, B.
Powiązania:
https://bibliotekanauki.pl/articles/48852.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
aerobic condition
anaerobic condition
Ancylus Lake
Baltic Sea
diatom assemblage
ecological group
geochemistry
Holocene
lacustrine sediment
marine diatom
marine environment
paleogeographic development
Pomeranian Bay
sediment core
shallow lake
Opis:
This article focuses on the diatom assemblages and geochemical composition of sediment cores retrieved from the Pomeranian Bay. We also discuss similarities and differences in the diatom assemblages and the palaeogeographic development of nearby regions. Our main objective was to determine the characteristics and rate of the Littorina transgression in the Pomeranian Bay area. Sediments were divided into units based on differences in the distribution of diatom ecological groups and in geochemical ratios, such as Mg/Ca, Na/K and Fe/Mn. This study identified lacustrine sediments deposited during the time of the Ancylus Lake. This lacustrine-period sedimentation took place in a shallow lake under aerobic conditions. The record of the onset of marine environment dates to 8900–8300 cal BP and corresponds to the Littorina transgression. After about 8300 cal BP, sedimentation took place in a deeper marine environment with higher biogenic production and anaerobic conditions. The abrupt appearance of marine diatom species and increased geochemical salinity indicators reflect the large impact of the Littorina transgression on the Pomeranian Bay environment.
Źródło:
Oceanologia; 2011, 53, (1-TI)
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
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