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Attenuation of ultraviolet irradiance in North European coastal waters

100%
Aas E., Hojerslev N. K.
Oceanologia
|
2001
|
tom 43
|
nr 2
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,b oth 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.
2

Quantitative microbiological survey in Hornsund, SW Spitsbergen. Reconaissance study in summer 1985

84%
Zajaczkowska B., Zajaczkowski M.
Bulletin of the Polish Academy of Sciences. Biological Sciences
|
1989
|
tom 37
|
nr 4-6
3

Monothalamous foraminifera from West Spitsbergen fjords, Svalbard: a brief overview

84%
Majewski W., Pawlowski J., Zajaczkowski M.
Polish Polar Research
|
2005
|
tom 26
|
nr 4
269-285
During the 2004 summer season, 14 sediment samples were collected in Kongs- fjorden and Isfjorden, West Spitsbergen, from 6 down to 345 m water-depth (mwd). The samples yielded abundant assemblage of monothalamous foraminifera, belonging to almost 40 morphotypes. Our qualitative (>125µm) and quantitative data (125-500µm) allowed to distinguish three water-depth related assemblages in both Kongsfjorden and Adventfjorden (branch of Isfjorden), indicating that soft-walled monothalamous foraminifera show similar habitat gradation along fjord axis as calcareous and robust agglutinated taxa. Among the monothalamous foraminifera, the subtidal assemblage (6 mwd) was dominated by various unidentified allogromiids. The second, shallow-water assemblage (44-110 mwd) was dominated by Psammophaga sp. 1-3, Hippocrepinella crassa, Hippocrepinella cf. hirudinea, and large Gloiogullmia sp. 2. The deep-water (150-345 mwd) monothalamous assemblage was dominated by Psammophaga sp. 4, pear-shaped Hippocrepina sp., Hippocrepina indivisa, and long Cylindrogullmia sp. 2, as well as large agglutinated species Hyperammina subnodosa with attached Tholosina bulla, Hyperammina fragilis and Lagenammina sp.
4

Persistent organic pollutants [POPs] and polycyclic aromatic hydrocarbons [PAHs] in surface sediments from selected fjords, tidal plains and lakes of the North Spitsbergen

84%
Sapota G., Wojtasik B., Burska D., Nowinski K.
Polish Polar Research
|
2009
|
tom 30
|
nr 1
59-76
5

Differences in taxonomic composition of summer phytoplankton in two fjords of West Spitsbergen, Svalbard

84%
Wiktor J., Wojciechowska K.
Polish Polar Research
|
2005
|
tom 26
|
nr 4
259-268
Fjords of West Spitsbergen are very dynamic in terms of hydrology. Here we tested whether the qualitative analysis of the taxonomic composition of phytoplankton may be useful as a fast method to assess the origin of the waters and whether it can give any additional information to hydrological data. Phytoplankton samples were collected along transects in Hornsund and Kongsfjord. Among total of 109 taxa identified, only 49 were common in both fjords. The assemblages in Hornsund implied that inflow of the cold waters of the Sørkapp Current had occurred some time before samples collection, while in Kongsfjord the taxonomic composition was typical for the summer and did not show any recent, unusual hydrological phenomenon. Concluding, the method can be useful in the surveys in which hydrological data are collected infrequently.
6

On the use of sediment traps in sedimentation measurements in glaciated fjords

84%
Zajaczkowski M.
Polish Polar Research
|
2002
|
tom 23
|
nr 2
161-174
7

Zooplankton community structure; a comparison of fjords, open water and ice stations in the Svalbard area

84%
Walkusz W., Storemark K., Skau T., Gannefors C., Lundberg M.
Polish Polar Research
|
2003
|
tom 24
|
nr 2
8

A contribution to the knowledge of Arctic zooplankton diurnal variability [Kongsfjorden, Svalbard]

84%
Walkusz W., Kwasniewski S., Dmoch K., Beszczynska-Moller A.
Polish Polar Research
|
2007
|
tom 28
|
nr 1
Zooplankton was investigated at fixed site in 24 hours in Kongsfjorden, a glacial fjord situated on the west coast of Spitsbergen (Svalbard) (79°N, 12°E), in order to unveil the level of diurnal variability in community composition and abundance. Parallel to zooplankton study water temperature and salinity were measured while information on local tides and winds was obtained from external sources. Observed changes did not exceed the range of variability regarded intrinsic, resulting from the nature of plankton. Because of this low variability we are of the opinion that the data presented can be regarded a valid measure of the natural heterogeneity of zooplankton communities in hydrologically dynamic Arctic coastal waters in summer. The observed changes in zooplankton were primarily induced by the complex dynamics of the fjord's water masses. In spite of importance of tidal forcing, the variability in zooplankton did not demonstrate similar temporal fluctuations due to modification of the water movement by other irregular forces (local wind). Also, we have not found any indication of diel vertical migration in coastal water in the Arctic under the condition of midnight sun.
9

Biodiversity and energy transfer to top trophic levels in two contrasting Arctic fjords

67%
Weslawski J. M., Kwasniewski S., Stempniewicz L., Blachowiak-Samolyk K.
Polish Polar Research
|
2006
|
tom 27
|
nr 3
259-278
The food and foraging strategy of fifteen species of seabirds and sea mammals from two high Arctic fjords were analysed. One of the fjords, Kongsfjord, is strongly influenced by warm waters from the Atlantic, while Hornsund is of a more Arctic character. Prey species in the Atlantic waters were more diverse (82 species and 16 functional groups) compared to those of Arctic waters (67 prey species and 14 functional groups). The consumption of top predators from Hornsund in the peak season of July was estimated at 2.86*106 MJ, while that in Kongsfjord was 1.35*106 MJ. For the analysed function of the ecosystem (the transfer of energy to the top trophic levels) the specific character of prey species is of key importance and not the diversity, abundance or biomass per se. Lower species diversity and biomass in Arctic waters is compensated for by the occurrence of larger individuals of these species, which permits top predators to prey directly on lower trophic levels.
10

Estimation of glacial meltwater discharge into Svalbard coastal waters

67%
Beszczynska-Moller A., Weslawski J. M., Walczowski W., Zajaczkowski M.
Oceanologia
|
1997
|
tom 39
|
nr 3
11

Nad fiordem Gullmar

59%
Kielan Z., Pozaryska K.
Wszechświat
|
1957
|
nr 02
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