Alimentary exposure and elimination routes of rare earth elements (REE) in marine mammals from the Baltic Sea and Antarctic coast

2021 ◽  
Vol 754 ◽  
pp. 141947
Author(s):  
Andrzej R. Reindl ◽  
Dominika Saniewska ◽  
Agnieszka Grajewska ◽  
Lucyna Falkowska ◽  
Michał Saniewski
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Baltic Sea ◽  
Marine Mammals ◽  
The Baltic Sea ◽  
The Baltic

scholarly journals Understanding the diet composition of marine mammals: grey seals (Halichoerus grypus) in the Baltic Sea

2010 ◽  
Vol 67 (6) ◽  
pp. 1230-1239 ◽  
Author(s):  
Karl Lundström ◽  
Olle Hjerne ◽  
Sven-Gunnar Lunneryd ◽  
Olle Karlsson
Keyword(s):  
Baltic Sea ◽  
Marine Mammals ◽  
Diet Composition ◽  
Age Groups ◽  
Geographic Region ◽  
Halichoerus Grypus ◽  
The Baltic Sea ◽  
Sampling Condition ◽  
The Baltic ◽  
Sampling Procedures

AbstractLundström, K., Hjerne, O., Lunneryd, S-G., and Karlsson, O. 2010. Understanding the diet composition of marine mammals: grey seals (Halichoerus grypus) in the Baltic Sea. – ICES Journal of Marine Science, 67: 1230–1239. Dietary studies are important in understanding the ecological role of marine mammals and in formulating appropriate management plans in terms of their interactions with fisheries. The validity of such studies has, however, often been compromised by unrepresentative sampling procedures, resulting in false weight being given to external factors seeming to influence diet composition. The bias caused by non-random sampling was examined, using canonical correspondence analysis to assess how the prey species composition in digestive tract samples of Baltic grey seals (Halichoerus grypus) was related to spatial, temporal, and demographic factors and to whether the samples were collected in association with fishing gear or not (“sampling condition”). Geographic region explained the largest fraction of the observed variation, followed by sampling condition, age group, and year. Season and gender were not statistically significant. Segregation of the two age categories “pups” and “juveniles–adults”, and the two geographic categories “Baltic proper” and “Gulf of Bothnia” are proposed to estimate the diet and fish consumption of the Baltic grey seal population as a whole. Atlantic herring was the most commonly recovered prey item in all areas and age groups, followed by European sprat in the south, and common whitefish in the north. Pups had eaten relatively more small non-commercial species than older seals.

Organotin Compounds in the Liver Tissue of Marine Mammals from the Polish Coast of the Baltic Sea

2004 ◽  
Vol 38 (5) ◽  
pp. 1415-1420 ◽  
Author(s):  
Tomasz Ciesielski ◽  
Andrzej Wasik ◽  
Iwona Kuklik ◽  
Krzysztof Skóra ◽  
Jacek Namieśnik ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Liver Tissue ◽  
Marine Mammals ◽  
Organotin Compounds ◽  
The Baltic Sea ◽  
The Baltic

scholarly journals Developing twenty-first century skills: insights from an intensive interdisciplinary workshop Mosaic of Life

2013 ◽  
Vol 3 (2) ◽  
pp. 38-43
Author(s):  
Tamara Milosevic ◽  
Alice Della Penna
Keyword(s):  
Baltic Sea ◽  
Scientific Literacy ◽  
Marine Mammals ◽  
Marine Ecosystem ◽  
Project Based Learning ◽  
First Century ◽  
The Baltic Sea ◽  
Twenty First Century ◽  
Twenty First Century Skills ◽  
The Baltic

The Baltic Sea, one of the world’s largest semi-enclosed seas, which, with its very low salinity and quasi-isolation from the big oceans cannot decide whether it is a sea or a large lake. This geologically-unique environment supports an even more surprising and delicate marine ecosystem, where a complex community of fishes, marine mammals and important microscopic organisms creates a magical mosaic of life. Humans have enjoyed the abundance of life in the Baltic Sea for thousands of years, and major Scandinavian and Baltic cities have oriented themselves towards this geo-ecosystem in order to develop and seek ecological, economical and cultural inspiration and wealth. The ‘Mosaic of Life’ workshop aimed at going beyond the obvious in examining the meaning of the Baltic Sea by gathering together a selection of young, creative minds from different backgrounds ranging from the arts and economics to geology and life sciences. This intensive workshop was designed as a unique training opportunity to develop essential twenty-first century skills – to introduce and develop creative, critical and interdisciplinary thinking and collaborative teamwork, as well as to foster a visual and scientific literacy, using project-based learning and hands-on activities. Our final goal has been to be inspired by the resulting connections, differences and unifying concepts, creating innovative, interdisciplinary projects which would look further than the sea – further than the eye can see and further into the future.

Nasopharyngeal mites Halarachne halichoeri (Allman, 1847) parasitizing the gray seal Halichoerus grypus (Fabricius, 1791) in the Baltic Sea with notes on other parasitic Halarachnidae associated with marine mammals

2018 ◽  
Vol 47 (4) ◽  
pp. 398-404 ◽  
Author(s):  
Leszek Rolbiecki ◽  
Joanna N. Izdebska ◽  
Konrad Bidziński ◽  
Martyna Jankowska-Jarek
Keyword(s):  
New Species ◽  
Baltic Sea ◽  
Marine Mammals ◽  
New Genus ◽  
Halichoerus Grypus ◽  
The Baltic Sea ◽  
Gray Seal ◽  
The Baltic ◽  
Parasitic Mites ◽  
A New Species

AbstractParasitic arthropods of marine mammals are relatively poorly understood, with the least amount of data on the occurrence of parasitic arthropods in these hosts. Thus far, only seal lice Echinophthirius horridus (von Olfers, 1816) have been found in the Baltic seals, while there was no information about the presence of parasitic mites in these mammals. The nasopharyngeal mite Halarachne halichoeri (Allman, 1847) has recently been found in the gray seal Halichoerus grypus (Fabricius, 1791), representing a new species (and new genus) for the Polish fauna. Sixty three specimens were found in the nasal cavity and the trachea, including 18 females and 45 males. This is also the first documented record of Halarachnidae in seals of the Baltic Sea. A checklist of parasitic Halarachnidae known from marine mammals is also provided.

Ecological hypotheses for a historical reconstruction of upper trophic level biomass in the Baltic Sea and Skagerrak

2002 ◽  
Vol 59 (1) ◽  
pp. 173-190 ◽  
Author(s):  
Brian R MacKenzie ◽  
Jürgen Alheit ◽  
Daniel J Conley ◽  
Poul Holm ◽  
Carl Christian Kinze
Keyword(s):  
Baltic Sea ◽  
Fish Species ◽  
Marine Mammal ◽  
Marine Mammals ◽  
Environmental Variability ◽  
Saline Water ◽  
Clupea Harengus ◽  
The Baltic Sea ◽  
The Baltic

Fish and marine mammal populations in the Baltic Sea and Skagerrak have undergone major fluctuations over the past five centuries. We summarize how these fluctuations may have depended on various forms of predation (e.g., cannibalism, fishing, hunting) and environmental processes. The best-documented long-term fisheries in this region are the herring (Clupea harengus) fisheries near Bohuslän, western Sweden, and in the Øresund. These fisheries have been important since at least the 1200s and appear to be partly climatically driven. However, in the rest of the Baltic, information about fisheries for herring and other fish species is rare until after 1900. During the 20th century, while the Baltic underwent eutrophication, the biomass and landings of three fish species (cod (Gadus morhua), herring, and sprat (Sprattus sprattus)) all increased, whereas the biomass of marine mammals (grey seals (Halichoerus grypus), ringed seals (Phoca hispida), harbour porpoises (Phocoena phocoena)) decreased. The relative roles of exploitation, marine mammal predation, and environmental variability (e.g., eutrophication, major inflows of saline water, climate change) on the long-term dynamics of key fish species is not clear and requires increased collaboration among historians, fisheries and marine mammal ecologists, oceanographers, and climatologists.

Temporal and spatial sedimentation rate variabilities in the eastern Gotland Basin, the Baltic Sea

Boreas ◽  
2002 ◽  
Vol 31 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Christian Christiansen ◽  
Helmar Kunzendorf ◽  
Kay-Christian Emeis ◽  
Rudolf Endler ◽  
Ulrich Struck ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Sedimentation Rate ◽  
The Baltic Sea ◽  
Gotland Basin ◽  
Temporal And Spatial ◽  
The Baltic

Russian Oil: Production and Exports

2003 ◽  
pp. 136-146
Author(s):  
K. Liuhto
Keyword(s):  
Baltic Sea ◽  
Statistical Data ◽  
Oil Production ◽  
The Baltic Sea ◽  
North West ◽  
The North ◽  
Oil Transportation ◽  
Sea Ports ◽  
The Baltic

Statistical data on reserves, production and exports of Russian oil are provided in the article. The author pays special attention to the expansion of opportunities of sea oil transportation by construction of new oil terminals in the North-West of the country and first of all the largest terminal in Murmansk. In his opinion, one of the main problems in this sphere is prevention of ecological accidents in the process of oil transportation through the Baltic sea ports.

Paleoecological study of bottom sediments of the lake Goluboye (Karelian Isthmus) according to the results of diatom analysis

2019 ◽  
pp. 265-269
Author(s):  
Angelina E. Shatalova ◽  
Uriy A. Kublitsky ◽  
Dmitry A. Subetto ◽  
Anna V. Ludikova ◽  
Alar Rosentau ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Bottom Sediments ◽  
Modern Science ◽  
Karelian Isthmus ◽  
The Baltic Sea ◽  
Diatom Analysis ◽  
North West ◽  
The North ◽  
Important Direction ◽  
The Baltic

The study of paleogeography of lakes is an actual and important direction in modern science. As part of the study of lakes in the North-West of the Karelian Isthmus, this analysis will establish the dynamics of salinity of objects, which will allow to reconstruct changes in the level of the Baltic Sea in the Holocene.

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)

2008 ◽  
Vol 37 (4) ◽  
Author(s):  
Małgorzata Leśniewska ◽  
Małgorzata Witak
Keyword(s):  
Baltic Sea ◽  
The South ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Southern Baltic Sea ◽  
Gulf Of Gdansk ◽  
Southern Baltic ◽  
The Baltic ◽  
Palaeoenvironmental Changes

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)The palaeoenvironmental changes of the south-western part of the Gulf of Gdańsk during the last 8,000 years, with reference to the stages of the Baltic Sea, were reconstructed. Diatom analyses of two cores taken from the shallower and deeper parts of the basin enabled the conclusion to be drawn that the microflora studied developed in the three Baltic phases: Mastogloia, Littorina and Post-Littorina. Moreover, the so-called anthropogenic assemblage was observed in subbottom sediments of the study area.

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