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The impact of a non-uniform land surface on the radiation environment over an Arctic fjord – a study with a 3D radiative transfer model for stratus clouds over the Hornsund fjord, Spitsbergen

100%

Rozwadowska A., Gorecka I.

Oceanologia

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2012

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tom 54

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nr 4

2

Total benthic oxygen uptake in two Arctic fjords (Spitsbergen) with different hydrological regimes

100%

Kotwicki L., Grzelak K., Opalinski K., Weslawski J. M.

Oceanologia

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2018

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tom 60

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nr 2

3

Ecosystem maturation follows the warming of the Arctic fjords

100%

Weslawski J. M., Buchholz F., Gluchowska M., Weydmann A.

Oceanologia

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2017

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tom 59

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nr 4

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.

4

Physical oceanographic conditions and a sensitivity study on meltwater runoff in a West Greenland fjord: Kangerlussuaq

100%

Monteban D., Pedersen J. O. P., Nielsen M. H.

Oceanologia

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2020

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tom 62

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nr 4PA

5

Comparison of the burial rate estimation methods of organic and inorganic carbon and quantification of carbon burial in two high Arctic fjords

100%

Koziorowska K., Kulinski K., Pempkowiak J.

Oceanologia

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2018

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tom 60

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nr 3

6

Deposition, return flux, and burial rates of nitrogen and phosphorus in the sediments of two high-Arctic fjords

100%

Koziorowska K., Kulinski K., Pempkowiak J.

Oceanologia

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2018

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tom 60

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nr 4

7

Comparison of meteorological conditions in Svalbard fjords: Hornsund and Kongsfjorden

80%

Cisek M., Makuch P., Petelski T.

Oceanologia

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2017

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tom 59

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nr 4

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.

8

Benthic Crustacea and Mollusca distribution in Arctic fjord - case study of patterns in Hornsund, Svalbard

80%

Drewnik A., Weslawski J. M., Wlodarska-Kowalczuk M.

Oceanologia

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2017

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tom 59

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nr 4

We present the results of species distribution modeling conducted on macrobenthic occurrence data collected between 2002 and 2014 in Arctic fjord – Hornsund. We focus on species from Mollusca and Crustacea taxa. This study investigates the importance of individual environmental factors for benthic species distribution, with a special emphasis on bottom water temperature. It aims to verify the hypothesis that the distribution of species is controlled by low water temperatures in the fjord and that the inner basins of the fjord serve as potential refugia for Arctic species threatened by the climate change-related intensification of warmer water inflows. Our results confirm the importance of bottom water temperature in regulating the presence of benthic fauna in the Hornsund fjord. The distribution of studied species is clearly related to specific water mass – colder (<1°C) or warmer (>1°C); and the preferred temperature regimes seem to be species specific and unrelated to analyzed groups. This study supports the notion that inner basins of the Hornsund fjord are potential refugia for cold water Arctic fauna, while the outer and central basins provide suitable habitats for fauna that prefer warmer waters.

9

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

80%

Weslawski J. M., Kwasniewski S., Stempniewicz L., Blachowiak-Samolyk K.

Polish Polar Research

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2006

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tom 27

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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

Comparison of bacterial production in the water column between two Arctic fjords, Hornsund and Kongsfjorden (West Spitsbergen)

80%

Ameryk A., Jankowska K. M., Kalinowska A., Weslawski J. M.

Oceanologia

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2017

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tom 59

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nr 4

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.

11

Entrapment of macroplankton in an Arctic fjord basin, Kongsfjorden, Svalbard

80%

Weslawski J. M., Pedersen G., Petersen S. F., Porazinski K.

Oceanologia

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2000

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tom 42

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nr 1

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.

12

Distribution patterns and feeding strategies of lysianassoid amphipods in shallow waters of an Arctic fjord

80%

Legezynska J.

Polish Polar Research

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2001

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tom 22

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nr 3-4

Ograniczanie wyników

The impact of a non-uniform land surface on the radiation environment over an Arctic fjord – a study with a 3D radiative transfer model for stratus clouds over the Hornsund fjord, Spitsbergen

Total benthic oxygen uptake in two Arctic fjords (Spitsbergen) with different hydrological regimes

Ecosystem maturation follows the warming of the Arctic fjords

Physical oceanographic conditions and a sensitivity study on meltwater runoff in a West Greenland fjord: Kangerlussuaq

Comparison of the burial rate estimation methods of organic and inorganic carbon and quantification of carbon burial in two high Arctic fjords

Deposition, return flux, and burial rates of nitrogen and phosphorus in the sediments of two high-Arctic fjords

Comparison of meteorological conditions in Svalbard fjords: Hornsund and Kongsfjorden

Benthic Crustacea and Mollusca distribution in Arctic fjord - case study of patterns in Hornsund, Svalbard

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

Comparison of bacterial production in the water column between two Arctic fjords, Hornsund and Kongsfjorden (West Spitsbergen)

Entrapment of macroplankton in an Arctic fjord basin, Kongsfjorden, Svalbard

Distribution patterns and feeding strategies of lysianassoid amphipods in shallow waters of an Arctic fjord