The biogeochemical dynamics of fjords in the southeastern Pacific Ocean are strongly influenced by hydrological and oceanographic processes occurring at a seasonal scale. In this study, we describe role hydrographic forcing on variability carbonate system Sub-Antarctic glacial fjord, Seno Ballena, Strait Magellan (53°S). Biogeochemical variables were measured 2018 during three cruises (fall, wi...

AGATA WEYDMANN1*, JANNE E. SØREIDE2, SŁAWEK KWAŚNIEWSKI1, EVA LEU3, STIG FALK-PETERSEN3,4 AND JØRGEN BERGE2,4 1 INSTITUTE OF OCEANOLOGY, POLISH ACADEMY OF SCIENCES, POWSTANCOW WARSZAWY ST. 55, 81-712 SOPOT, POLAND, THE UNIVERSITY CENTRE IN SVALBARD, N-9171 LONGYEARBYEN, NORWAY, THE NORWEGIAN POLAR INSTITUTE, N-9296 TROMSØ, NORWAY AND FACULTY OF BIOSCIENCES, FISHERIES AND ECONOMICS, UNIVERSITY O...

A. Nikulina et al.

Jellyfish blooms are of increasing concern in many parts of the world, and in Norwegian fjords an apparent increase in mass occurrences of the deep water jellyfish Periphylla periphylla has attracted attention. Here we investigate the hypothesis that changes in the water column light attenuation might cause local retention and thereby facilitate mass occurrences. We use a previously tested indi...

The western Antarctic Peninsula is experiencing strong environmental changes as a consequence of ongoing regional warming. Glaciers in the area are retreating rapidly and increased sediment-laden meltwater runoff threatens the benthic biodiversity at shallow depths. We identified three sites with a distinct glacier-retreat related history and different levels of glacial influence in the inner p...

The salmon louse Lepeophtheirus salmonis is a major parasite of salmon, and is able to travel between farms during its pelagic phases. We investigated the spatial dispersion of L. salmonis planktonic stages in the Hardangerfjord, Norway, using an individual-based model and a fjord circulation model. The models allowed us to investigate how assumptions about swimming responses to environmental c...

Recent sediment accumulation rates in Adventfjorden (Svalbard), a small subpolar fjord, were determined by Pb and Cs dating. Modern rates in the central basin decrease downfjord from 1.87 to 0.87 cm y−1 (2.6 to 1.19 g cm−2 y−1). Comparison of the modern values (1986–2001) with older ones (1963–86) reveals a marked increase in sediment accumulation rates in the last ten years. This correlates we...

Bowhead whales (Baleana mysticetus) are usually away from west Greenland waters during summer. Reported here is an observation of at least six bowhead in July 2022 the Uummannaq Fjord system Greenland.