Daniel M. Moore
Anna Elina Flink
Eva Prendergast
Antony Gilbert
Опубликована Янв. 1, 2023
Underwater biological surveys have been conducted around the Antarctic continent for several decades, and our knowledge of the species present in the shallow waters (<50 m) is reasonably comprehensive. However, the waters below 50 m remain underexplored on the account of difficulty of access, financial barriers and relatively few operational platforms capable of deployment to such depths. Here, we demonstrate that personal submersibles, now increasingly deployed by the expedition cruise industry, can be vessels of opportunity for biological research in the polar regions. We describe direct observations of the rarely encountered scyphozoan Stygiomedusa gigantea at water depths of 80–280 …
Outi M. Tervo
Mikkel-Holger Strander Sinding
Mads Peter Heide-Jørgensen
Rikke G. Hansen
Marie Louis
Опубликована Янв. 1, 2023
The Spitsbergen population of bowhead whales (Balaena mysticetus) was harvested to near extinction during the whaling era. Here, we show possible signs of recovery of the population by reporting observations of two calves in the Scoresby Sund polynya in East Greenland on 2 and 4 May 2022, and it is the first observation of this kind in this area since the early 1900s.
Christian Lydersen
Kerstin Langenberger
Kit M. Kovacs
Опубликована Янв. 1, 2023
Herein we describe mating behaviour observed in a group of 20 white whales in Svalbard, Norway. A single female was the centre of attention during the 45-minute encounter, which was observed, photographed and videotaped at an ice edge in Storfjorden in June 2022. Several males surrounded the female and vigorously herded her from all sides. The female spy-hopped regularly, and sometimes her whole body was pushed out of the water by the other animals. High tail-lifts and tail-slapping were frequently performed by males, and erect penises were observed many times. Trumpet calls were also heard. At one point, three males …
Mykhailo V. Savenets
Larysa Pysarenko
Svitlana Krakovska
Ivan Parnikoza
Denis Pishniak
Опубликована Янв. 1, 2023
We describe the main features of LT variability that influence native vascular plants in the Antarctic and examine the relationship between the temperature regime at the micro-level and meteorological conditions at the macro-level. We used a period of over a year, during which 37 specialized mini-loggers recorded LT near vascular plants in the Argentine Islands–Kyiv Peninsula region of the Antarctic Peninsula. Rather than measuring standard air or soil temperature, these loggers detect the temperature near the ground, in the microhabitats that harbour vascular plants. On a daily scale, LT correlates with standard (2-m) air temperature, with the values higher at …
Sturla F. Kvamsdal
Dorothy Dankel
Nils-Arne Ekerhovd
Alf Håkon Hoel
Angelika Renner
Anne Britt Sandø
Stein Ivar Steinshamn
Опубликована Янв. 1, 2022
Many areas in the Arctic are vulnerable to the impacts of climate change. We observe large-scale effects on physical, biological, economic and social parameters, including ice cover, species distributions, economic activity and regional governance frameworks. Arctic living marine resources are affected in various ways. A holistic understanding of these effects requires a multidisciplinary enterprise. We synthesize relevant research, from oceanography and ecology, via economics, to political science and international law. We find that multidisciplinary research can enhance our understanding and promote new questions and issues relating to impacts and outcomes of climate change in the Arctic. Such issues include recent …