Epilithic lichens and their morphological adaptations to the conditions of the White and Barents Seas coast (Russian Arctic)

2012 ◽  
Vol 2 (2) ◽  
pp. 109-116 ◽  
Author(s):  
Anzhella V. Sonina
Keyword(s):  
Species Composition ◽  
Barents Sea ◽  
White Sea ◽  
Lichen Species ◽  
The White Sea ◽  
The Barents Sea ◽  
Lichen Cover ◽  
Functional Features ◽  
Epilithic Lichens ◽  
Sea Coast

The main aim of our work was to investigate the biodiversity of coastal lichens, conditions of lichen cover formation, and study the structural and functional adaptations of Lecanora intricata (Ach.) Ach. and L. polytropa (Ehrh. ex Hoffm.) Rabenh. The investigation was carried out during 2008-2012 on cliffs both along the Murmansk (the Barents Sea) coast and the southern and western shores of the White Sea. For the evaluation of species composition, and ecotopic coenotical features of epilithic lichen growing on cliffs, the geobotanical methods have been used. In addition, the anatomical, morphological and biochemical studies of Lecanora intricata and L. polytropa have been made. 91 species have been included in the total list of lichens on the White Sea coast. On the Murmask coast of the Barents Sea, 36 lichen species had revealed. On the coastal territory, the epilithic lichens inhabit the upper littoral and supralittoral zone. The lichen cover is formed by two interacting factors: the water factor (sea) and the terrestrial vegetation. Four lichen zones were distinguished in the all studying territories. They differed by the lichen species composition and effect of the sea. The first lichen’s zone is the intrazonal structure in the complex coastal lichen cover. In Lecanora polytropa and L. intricata, structural and functional features of lichens for adaptation to unstable coastal conditions were identified. The crustose biomorphs were better adapted to temperature and degree of hydration of thalli. Formation of the smallest ascospores is reproductive strategy of epilithic lichens in extreme habitats. High content of usnic acid in the studied lichen thalli allows them to exist in the open areas exposed to solar radiation and provides the biotic regulation that affects the structure of lichen cover. Optimal ratio of algal to fungal components in the thalli of these species is necessary to maintain their life in extreme environments.

Adaptations of epilithic lichens to the microclimate conditions of the White Sea coast

2017 ◽  
Vol 7 (2) ◽  
pp. 133-143 ◽  
Author(s):  
Anzhella V. Sonina ◽  
Anastasya D. Rumjantseva ◽  
Anna A. Tsunskaya ◽  
Vera I. Androsova
Keyword(s):  
Photosynthetic Pigments ◽  
Environmental Conditions ◽  
White Sea ◽  
Morphological Characteristics ◽  
Functional Adaptation ◽  
The White Sea ◽  
Structural Adaptation ◽  
Functional Features ◽  
Epilithic Lichens ◽  
Sea Coast

Anatomical and functional features of the following three epilithic lichens Umbilicaria torrefacta, Physcia caesia, Physcia dubia were studied. These species have different morphological characteristics of thalli and occupy similar environmental conditions on supralittoral of the White Sea coast. The studied lichens are widespread in the territory of Karelia. U. torrefacta is an obligate epilithic species, Physcia caesia and Physcia dubia colonize both bark of trees and stones. Within the study area, these species were found only on coastal boulders. Photobiont of all studied lichens is unicellular green alga of the genus Trebouxia (Purvis et al. 1992). Based on the study, it was found that Ph. caesia adapts to the environmental conditions through the variability of photosynthetic pigments level which is confirmed by a strong variation of the chlorophylls a/b ratio and chlorophylls/carotenoids ratio (coefficient of variation, CV > 42%) with the stability of anatomical structures (CV ≤ 11%) – functional adaptation. Lichen Ph. dubia adapts through the variability of anatomical layers (upper cortex, algal layer, medullae, lower cortex, thallus thickness) (CV > 22%), and amounts of photosynthetic pigments (CV > 19%) – structural and functional adaptation. For U. torrefacta, the structural adaptation to environmental conditions (CV thickness of anatomical layers > 28%, CV amounts of photosynthetic pigments – 7, 8%) was recorded.

scholarly journals Boulder pits of the White Sea Region

2021 ◽  
Vol 12 (4-2021) ◽  
pp. 104-125
Author(s):  
M. M. Shakhnovitch ◽  
Keyword(s):  
Coastal Zone ◽  
Russian Federation ◽  
Barents Sea ◽  
White Sea ◽  
The White Sea ◽  
Field Surveys ◽  
Finnish Lapland ◽  
The Barents Sea ◽  
The Russian Federation

The purpose of the article is to introduce into scientific circulation little-known and controversial objects made of stones discovered during our field surveys in 2019 on the Tersk Coast of the White Sea near the Khlebnaya River. The monument consists of 27 boulder structures of four types: ring-shaped layouts with a recess in the center –– boulder pits (24), “seid”, “pile”, a flat boulder with stones laid on it. Boulder pits within the borders of the Russian Federation are found in the coastal zone of the Western and Northern White Sea regions and the Barents Sea. The distribution of such objects is noted in Finnmark and Finnish Lapland and correlates with the area of historical settlement of local Sami groups. We tend to interpret the “boulder pits” as objects associated with non-Christian cult practices, possibly of a funerary nature.

scholarly journals COMPARATIVE STUDY OF POLYPHENOLS OF BROWN ALGAE OF THE BARENTS SEA AND THE WHITE SEA, AS WELL AS THE WATERS OF THE NORTH ATLANTIC

2020 ◽  
pp. 129-137
Author(s):  
Ekaterina Dmitriyevna Obluchinskaya ◽  
Lubov Viktorovna Zakharova
Keyword(s):  
Brown Algae ◽  
Barents Sea ◽  
White Sea ◽  
Raw Materials ◽  
Dry Mass ◽  
Biologically Active ◽  
The White Sea ◽  
Polyphenol Content ◽  
Norwegian Sea ◽  
The Barents Sea

The polyphenol content in the brown algae of the Barents, White Seas, as well as the water areas of the Northwest Atlantic (the Norwegian Sea, the Faxflow bay of the Atlantic Ocean) located in Russia, Norway, Greenland, and Iceland are compared. Algae of the following species were used for this study: Fucus vesiculosus, Fucus spiralis, Fucus serratus, Ascophyllum nodosum, Fucus evanescens. It was found that the most productive raw materials for the extraction of polyphenolic compounds are brown algae F. vesiculosus, growing in Zavalishin Bay of the Barents Sea (Russia): the highest polyphenol content (14.4%) in the summer of 2019 was noted here. Polyphenols detected in F. vesiculosus in the summer from the White Sea on about. Great burnt (13.3%) (Russia), as well as in the Norwegian Sea, Cape Sydspissen (11.6%) (Norway). The minimum content of polyphenols was found in F. spiralis (0.7% dry mass) on the coast of Iceland (Faxflow bay), a low content of polyphenols was characteristic of all types of algae from this location (0.7–2.4%). Three-way analysis of variance (MANOVA) on the example of three types of algae (F. vesiculosus, F. spiralis, A. nodosum) showed that all the studied factors (place of collection, type of algae, fertile phase) are significant. The most significant factor affecting the accumulation of polyphenols by brown algae is the location of algae growth. The high content of polyphenols in the types of algae we studied from Russian water areas allows us to recommend their use as food and medicinal raw materials, as well as raw materials for biologically active additives.

MODELING STORM SURGES AND WAVE CLIMATE IN THE WHITE AND BARENTS SEAS

2017 ◽  
Author(s):  
Anastasia Korablina ◽  
Anastasia Korablina ◽  
Victor Arkhipkin ◽  
Victor Arkhipkin ◽  
Sergey Dobrolyubov ◽  
...  
Keyword(s):  
Storm Surge ◽  
Barents Sea ◽  
White Sea ◽  
Storm Surges ◽  
Wave Climate ◽  
The Arctic ◽  
Economic Losses ◽  
The White Sea ◽  
Linear Interaction ◽  
The Barents Sea

Russian priority - the study of storm surges and wave climate in the Arctic seas due to the active development of offshore oil and gas. Researching the formation of storm surge and wave are necessary for the design and construction of facilities in the coastal zone, as well as for the safety of navigation. An inactive port ensues considerable economic losses. It is important to study the variability of storm surges, wave climate in the past and forecast the future. Consequently, this information would be used for planning the development of the Arctic in accordance with the development programme 2020. Mathematical modeling is used to analyze the characteristics of storm surges and wave climate formation from 1979 to 2010 in the White and Barents Seas. Calculation of storm surge heights in the seas is performed using model AdCirc on an unstructured grid with a 20 km pitch in the Barents Sea and 100 m in the White Sea. The model AdCirc used data of wind field reanalysis CFSv2. The simulation of storm surge was conducted with/without pressure, sea state, tides. A non-linear interaction of the surge and tide during the phase of destruction storm surge was detected. Calculation of the wave climate performed using SWAN spectral wave model on unstructured grids. Spatial resolution is 500 m-5 km for the White Sea and 10-20 km for the Barents Sea. NCEP/CFSR (~0.3°) input wind forcing was used. The storminess of the White Sea tends to increase from 1979 to 1991, and then decrease to minimum at 2000 and increase again till 2010.

MODELING STORM SURGES AND WAVE CLIMATE IN THE WHITE AND BARENTS SEAS

2017 ◽  
Author(s):  
Anastasia Korablina ◽  
Anastasia Korablina ◽  
Victor Arkhipkin ◽  
Victor Arkhipkin ◽  
Sergey Dobrolyubov ◽  
...  
Keyword(s):  
Storm Surge ◽  
Barents Sea ◽  
White Sea ◽  
Storm Surges ◽  
Wave Climate ◽  
The Arctic ◽  
Economic Losses ◽  
The White Sea ◽  
Linear Interaction ◽  
The Barents Sea

Russian priority - the study of storm surges and wave climate in the Arctic seas due to the active development of offshore oil and gas. Researching the formation of storm surge and wave are necessary for the design and construction of facilities in the coastal zone, as well as for the safety of navigation. An inactive port ensues considerable economic losses. It is important to study the variability of storm surges, wave climate in the past and forecast the future. Consequently, this information would be used for planning the development of the Arctic in accordance with the development programme 2020. Mathematical modeling is used to analyze the characteristics of storm surges and wave climate formation from 1979 to 2010 in the White and Barents Seas. Calculation of storm surge heights in the seas is performed using model AdCirc on an unstructured grid with a 20 km pitch in the Barents Sea and 100 m in the White Sea. The model AdCirc used data of wind field reanalysis CFSv2. The simulation of storm surge was conducted with/without pressure, sea state, tides. A non-linear interaction of the surge and tide during the phase of destruction storm surge was detected. Calculation of the wave climate performed using SWAN spectral wave model on unstructured grids. Spatial resolution is 500 m-5 km for the White Sea and 10-20 km for the Barents Sea. NCEP/CFSR (~0.3°) input wind forcing was used. The storminess of the White Sea tends to increase from 1979 to 1991, and then decrease to minimum at 2000 and increase again till 2010.

Cases of capture of Atka mackerel, Pleurogrammus monopterygius, transplanted to the Barents Sea from south-eastern Kamchatka

Fisheries ◽  
2021 ◽  
Vol 2021 (5) ◽  
pp. 61-64
Author(s):  
Nonna Zhuravleva
Keyword(s):  
Barents Sea ◽  
White Sea ◽  
Breeding Period ◽  
The White Sea ◽  
The Barents Sea ◽  
Experimental Works ◽  
Short Time ◽  
Atka Mackerel ◽  
Pleurogrammus Monopterygius ◽  
Made In

Atka mackerel, Pleurogrammus monopterygius was proposed for acclimatization to the Barents Sea long ago (Russ, 1958) and has been thoroughly studied in this regard. However, the number of experimental works by the transplantation of Atka mackerel from Kamchatka to the Barents Sea was small and their scale is insignificant. A total of 2 attempts were made in the 70s and 80s. The last time in 1982-1984, 6.5 millions of Atka mackerel caviar was transported from Kamchatka to Murmansk. Unfortunately, the systematic works by introduction was stopped. Meanwhile, the experience of acclimatization of Atka mackerel is very valuable not only for its practical orientation, which has in the future the additional production of fish in the Barents Sea, but also for a certain contribution to the development of the theory of acclimatization. The article provides information on the two repeated capture of Atka mackerel in the Barents Sea and six repeated in the White Sea. It is advisable to purposefully check the information on the White Sea; it is possible that the short time of the stay of adults Atka mackerel in the reservoir during the breeding period does not allow them to be identified during the annual ichthyological survey of the White Sea. It would be useful to catch of the Teribersky Cape of the Barents Sea, where adult Atka mackerel can be found during the breeding season. If the facts will not be confirmed, then our supposition remains true that the scale of work on the transplantation of Atka mackerel caviar was insignificant and the amount of imported caviar is small

Satellite tagging and seasonal distribution of harp seal (juveniles) of the w hite sea-Barents sea stock

2016 ◽  
Vol 6 (1) ◽  
pp. 31-42
Author(s):  
Vladislav Nikolaevich Svetochev ◽  
Nikolay Nikolaevich Kavtsevich ◽  
Olga Nagimovna Svetocheva
Keyword(s):  
Return Migration ◽  
Barents Sea ◽  
White Sea ◽  
Satellite Telemetry ◽  
Seasonal Migration ◽  
Harp Seal ◽  
Migration Route ◽  
The White Sea ◽  
Novaya Zemlya ◽  
The Barents Sea

Harp seal pups (4 ind.) were caught and marked with satellite telemetry transmitters (STT) in the White Sea in March-April 2010, the average tenure of STT was 226 ± 51.7 (103.6) days. In April the seals on the growth stage of "beater" left the White Sea on the drifting ice. In the Barents Sea the seals migrated north through the eastern part of the Barents Sea. Seals came to the northernmost point of their migration route, i.e. edge of the pack ice in the August – October period. One seal came out to the Greenland Sea. Seals’ return migration was in winter along the Novaya Zemlya to the south-eastern part of the Barents Sea. Result data of marking showed harp seal juveniles during the first seasonal migration may leave the traditional feeding areas, and during the return migration may not come to molt to the White Sea. According to satellite telemetry data the Czech Bay (Barents Sea) can be one of the molt areas of harp seal juveniles.

scholarly journals The ringed seal (Phoca hispida) in the western Russian Arctic

1998 ◽  
Vol 1 ◽  
pp. 63 ◽  
Author(s):  
Stanislav E Belikov ◽  
Andrei N Boltunov
Keyword(s):  
Barents Sea ◽  
White Sea ◽  
Ringed Seal ◽  
Kara Sea ◽  
Russian Arctic ◽  
The White Sea ◽  
Phoca Hispida ◽  
Ringed Seals ◽  
The Barents Sea ◽  
Fast Ice

This paper presents a review of available published and unpublished material on the ringed seal (Phoca hispida) in the western part of the Russian Arctic, including the White, Barents and Kara seas. The purpose of the review is to discuss the status of ringed seal stocks in relation to their primary habitat, the history of sealing, and a recent harvest of the species in the region. The known primary breeding habitats for this species are in the White Sea, the south-western part of the Barents Sea, and in the coastal waters of the Kara Sea, which are seasonally covered by shore-fast ice. The main sealing sites are situated in the same areas. Female ringed seals become mature by the age of 6, and males by the age of 7. In March-April a female gives birth to one pup in a breeding lair constructed in the shore-fast ice. The most important prey species for ringed seals in the western sector of the Russian Arctic are pelagic fish and crustaceans. The maximum annual sealing level for the region was registered in the first 70 years of the 20th century: the White Sea maximum (8,912 animals) was registered in 1912; the Barents Sea maximum (13,517 animals) was registered in 1962; the Kara Sea maximum (13,200 animals) was registered in 1933. Since the 1970s, the number of seals harvested has decreased considerably. There are no data available for the number of seals harvested annually by local residents for their subsistence.

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