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Wyszukujesz frazę "Arctic (Kongsfjorden)" wg kryterium: Temat

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    Wyświetlanie 1-12 z 12
    Tytuł:
    Characteristics of the Arctic and Antarctic mesozooplankton in the neritic zone during summer
    Autorzy:
    Walkusz, Wojciech
    Kwaśniewski, Sławomir
    Dmoch, Katarzyna
    Hop, Haakon
    Żmijewska, Maria Iwona
    Bielecka, Luiza
    Falk-Petersen, Stig
    Siciński, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/2052045.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic (Kongsfjorden)
    Antarctic (Admiralty Bay)
    zooplankton
    Copepoda
    abundance
    biomass
    Źródło:
    Polish Polar Research; 2004, 25, 3-4; 275-291
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diversity and distribution of Bryozoa in Kongsfjorden, Svalbard
    Autorzy:
    Gontar, Valentina I.
    Hop, Haakon
    Voronkov, Andrey Yu.
    Powiązania:
    https://bibliotekanauki.pl/articles/2052397.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    Svalbard
    Bryozoa
    biogeography
    Kongsfjorden
    Źródło:
    Polish Polar Research; 2001, 22, 3-4; 187-204
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spatial distribution of macroalgae along the shores of Kongsfjorden (West Spitsbergen) using acoustic imaging
    Autorzy:
    Kruss, Aleksandra
    Tęgowski, Jarosław
    Tatarek, Agnieszka
    Wiktor, Józef
    Blondel, Philippe
    Powiązania:
    https://bibliotekanauki.pl/articles/2046765.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    acoustic imaging
    Arctic
    habitat mapping
    Kongsfjorden
    macroalgae
    Źródło:
    Polish Polar Research; 2017, 38, 2; 205-229
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A contribution to the knowledge of Arctic zooplankton diurnal variability (Kongsfjorden, Svalbard)
    Autorzy:
    Walkusz, Wojciech
    Kwaśniewski, Sławomir
    Dmoch, Katarzyna
    Beszczyńska-Möller, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/2051849.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    Kongsfjorden
    zooplankton
    fjords
    diurnal variability
    Źródło:
    Polish Polar Research; 2007, 1; 43-56
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ecosystem maturation follows the warming of the Arctic fjords
    Autorzy:
    Weslawski, J.M.
    Buchholz, F.
    Gluchowska, M.
    Weydmann, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48879.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    climate change
    biodiversity
    ecosystem
    maturation
    Arctic fjord
    Hornsund
    Kongsfjorden
    physical environment
    Opis:
    Two fjords in West Spitsbergen (Hornsund 77°N and Kongsfjorden 79°N) differ with regard to their exposure towards increasingly warm Atlantic water inflow. Hornsund remains in many respects cooler than Kongsfjorden (on average 2°C SST in summer) and is less influenced by warmer and more saline Atlantic waters. Reported changes in the physical environment (temperature rise, freshwater inflow, salinity drop, turbidity, fast-ice reduction, coastal change) are discussed in the context of biological observations in the pelagic and benthic realms with special reference to krill (Euphausiacea). We conclude that well-documented changes in the physical environment have had little effect on the fjord biota and that both organisms and their ecological functions in the fjords are well adapted to the scale of ongoing change. The observed changes fit the definition of ecosystem maturation, with greater diversity, a more complex food web and dispersed energy flow at the warmer site.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aerosol optical properties over Svalbard: a comparison between Ny-Alesund and Hornsund
    Autorzy:
    Pakszys, P.
    Zielinski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/47955.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    aerosol optical property
    Svalbard
    Arctic aerosol
    optical property
    Spitsbergen fjord
    Kongsfjorden
    Hornsund
    Opis:
    This paper presents the CAMS model based aerosol optical properties calculated for two Spitsbergen fjords, Kongsfjorden (Ny-Ålesund) and Hornsund (Polish Polar Station in Hornsund) measured between 2010 and 2015. A small decrease in Aerosol Optical Depth (AOD) is shown throughout the study period leading to an alteration of the state of the polar atmosphere. However, the potential differences observed between the stations were not statistically significant. While during the studied period no significant differences in chemical composition between the stations were observed, increasing mean values of Black Carbon (BC) were found to be associated with an increasing number of wild forest fires in remote areas producing smoke plumes, which are further transported over vast distances and reach Spitsbergen.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aerosol Optical Depth variations due to local breeze circulation in Kongsfjorden, Spitsbergen
    Autorzy:
    Cisek, M.
    Petelski, T.
    Zielinski, T.
    Makuch, P.
    Pakszys, P.
    Rozwadowska, A.
    Markuszewski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/47662.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    aerosol optical depth
    aerosol
    modification
    Arctic region
    Kongsfjorden
    breeze circulation
    wind speed
    Spitsbergen
    Opis:
    This paper presents the results of Aerosol Optical Depth (AOD) studies which took place in Ny-Ålesund in the spring of 2014 during the iAREA campaign. The measurements were taken using Microtops II hand-held sunphotometers along the Kongsfjorden, on a path leading from the research village to the fjord opening. Local breeze circulation was observed during the measurement campaign which resulted in an evident increase of AOD along the measurement profile towards the open sea. Using the observed AOD, changes over the open sea have been calculated and the location of the breeze front has been determined.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aerosol physical properties in Spitsbergens fjords: Hornsund and Kongsfjorden during AREX campaigns in 2014 and 2015
    Autorzy:
    Markuszewski, P.
    Rozwadowska, A.
    Cisek, M.
    Makuch, P.
    Petelski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/47891.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Arctic aerosol
    Spitsbergen
    aerosol size
    aerosol optical property
    distribution
    Hornsund
    Kongsfjorden
    meteorological condition
    Opis:
    We present results of measurements of aerosol physical properties conducted on board of r/v Oceania during two cruises to the Spitsbergen region in 2014 (AREX 2014) and 2015 (AREX 2015). Measurements of aerosol size distribution, aerosol scattering coefficient and black carbon concentrations were made in two different Spitsbergen fjords: Hornsund and Kongsfjorden. The aerosol size distribution was measured in the size range from 0.09 μm to 47 μm using two aerosol size distribution spectrometers and a standard condensation particle counter. For the scattering coefficient an integrating nephelometer was used. Black carbon concentration was measured by an aethalometer. Temporal variabilities in physical properties of aerosol observed during the AREX 2014 and AREX 2015 campaigns were much higher than the differences between both fjords. The basic factors influencing aerosol conditions were advection and local generation of marine aerosol. In 2015 an episode of smoke advection was observed in both fjords causing an increase in the mean black carbon concentration from 7–12 ng m−3 to about 60 ng m−3, and an aerosol scattering coefficient at 550 nm from 2–4 Mm−1 to 12–17 Mm−1. Moreover, under certain conditions statistically significant gradients in aerosol optical properties were observed along the fjord axis reflecting an impact of mountains surrounding the fjords.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Deposition, return flux, and burial rates of nitrogen and phosphorus in the sediments of two high-Arctic fjords
    Autorzy:
    Koziorowska, K.
    Kulinski, K.
    Pempkowiak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/48289.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    nitrogen
    phosphorus
    sediment
    Hornsund region
    Kongsfjorden
    water column
    pore water
    nutrient concentration
    Arctic fjord
    Źródło:
    Oceanologia; 2018, 60, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Entrapment of macroplankton in an Arctic fjord basin, Kongsfjorden, Svalbard
    Autorzy:
    Weslawski, J.M.
    Pedersen, G.
    Petersen, S.F.
    Porazinski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/47968.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    zooplankton
    Themisto libellula
    Thysanoessa rashii
    plankton concentration
    Limacina helicina
    Arctic fjord
    Thysanoessa inermis
    macroplankton
    krill
    Svalbard
    Kongsfjorden
    Opis:
    This paper presents the results of 15 zooplankton tows collected with a Tucker Trawl (1 m2 opening, net of 2 mm mesh size) in Kongsfjorden (79◦N), Svalbard archipelago. The hydroacoustic survey revealed clear differences between the plankton concentrations in the outer and inner fjord basins. Plankton concentrations and fish were observed in the outer fjord, while uniformly scattered objects were detected in the inner basin. The macroplankton community was dominated by Euphausiacea (Thysanoessa inermis, Thysanoessa rashii), Amphipoda (Themisto libellula) and Pteropoda (Limacina helicina). Other taxa were of minor numerical importance. The macroplankton abundance reached 3300 indiv. 100−1 m−3 with a maximum biomass of 100 g wet weight 100−1 m−3 (over 440 kJ 100−1 m−3). L. helicina was advected into the fjord with surface waters, and was found in large abundance (1000 indiv. 100−1 m−3) in the subsurface layers of the inner basin. Euphausids were present in small numbers at the entrance to the fjord, but were found to be very abundant (600 indiv. 100−1 m−3) at the innermost stations, especially in the surface water layer. The estuarine circulation driven by the glacial meltwater discharge is believed to cause the entrapment of zooplankton in the inner fjord basin.
    Źródło:
    Oceanologia; 2000, 42, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of meteorological conditions in Svalbard fjords: Hornsund and Kongsfjorden
    Autorzy:
    Cisek, M.
    Makuch, P.
    Petelski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/47827.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    meteorological parameter
    Arctic fjord
    West coast
    Spitsbergen
    Svalbard Fjord
    Hornsund
    Kongsfjorden
    air temperature
    wind speed
    wind direction
    humidity
    cloud cover
    Opis:
    This paper presents the results of a comparison of basic meteorological parameters in two Arctic fjords situated on the west coast of Spitsbergen, the main island of the Svalbard archipelago. Air temperature, wind speed and direction, humidity and cloud cover from the period 2005 to 2016 are described and compared with previous (from 1975) analyses of meteorological conditions in the investigated region. Such a choice of dates coincides with the time the GAME project measurements were carried out. The main goal of this study was to compare meteorological conditions in two fjords: Hornsund and Kongsfjorden, during the time of rapid climate changes. The results are collated with research results available in literature from previous years. We discovered that in the investigated period the climate of the Hornsund region is more oceanic than in Kongsfjorden. The stable level of the difference in climate elements is manifested and is evident mainly through greater amplitudes in air temperatures in Kongsfjorden, and in stronger winds in Hornsund.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of bacterial production in the water column between two Arctic fjords, Hornsund and Kongsfjorden (West Spitsbergen)
    Autorzy:
    Ameryk, A.
    Jankowska, K.M.
    Kalinowska, A.
    Weslawski, J.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/47914.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    bacterial production
    environmental factor
    water column
    chlorophyll a
    water temperature
    bacterial biomass
    dissolved organic carbon
    dissolved organic matter
    Arctic fjord
    Spitsbergen
    Kongsfjorden
    Hornsund
    Opis:
    Bacterial production and the accompanying environmental factors were measured in the water columns of two Arctic fjords during the cruise in July and August 2013. Water samples were collected at six stations located in the central part of Hornsund and Kongsfjorden. In Hornsund, where average water temperatures were 1.25-fold lower than in Kongsfjorden, the bacterial production was twice as high (0.116 ± 0.102 vs 0.05 ± 0.03 mg C m−3 h−1). Statistical analysis indicated that chlorophyll a concentration itself was not a significant factor that affected bacterial production, in contrast to its decomposition product, pheophytin, originating from senescent algal cells or herbivorous activity of zooplankton. Single and multiple regression analysis revealed that water temperature, dissolved organic carbon (DOC), and pheophytin concentration were the main factors affecting bacterial production in both fjords.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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