Journal articles: 'Atka'

1

Stellon, Nicole. "Helen at Atka, 1937." Women's Review of Books 18, no. 1 (October 2000): 11. http://dx.doi.org/10.2307/4023513.

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2

Poltev, Yu N. "About the forced and later spawn of Atka mackerel Pleurogrammus monopterygius Pallas, 1810 (Scorpaeniformes: Hexagrammidae) in the waters of the North Kuril Islands." Researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean 1, no. 56 (December 8, 2020): 127–36. http://dx.doi.org/10.15853/2072-8212.2020.56.127-136.

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Results of the research indicate that the eggs of Atka mackerel are a part of forage for this speciesis from May to December. Captures of the Atka mackerel individuals spawning and feeding on the own eggs far from the coast indicate that a certain part of the stock spawns at the depths considerably lower than normal spawning grounds. Spawning individuals of Atka mackerel is were observed in research from June to December. Emergence of larvae from the eggs laid in November–December is expected in spring.

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3

Zolotov, A. O., O. G. Zolotov, and Yu K. Kurbanov. "STATE OF STOCKS AND MODERN FISHERY OF ATKA MACKEREL PLEUROGRAMMUS MONOPTERYGIUS (PALLAS, 1810) IN THE OLYUTORSKY-NAVARINSKY AREA OF THE BERING SEA." Izvestiya TINRO 200 (March 26, 2020): 38–57. http://dx.doi.org/10.26428/1606-9919-2020-200-38-57.

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Atka mackerel Pleurogrammus monopterygius is one of the mass species of fam. Hexagrammidae that inhabits the boreal and subarctic waters of the North Pacific and forms two large populations in its western and eastern parts. Reproductive range of the eastern, Aleutian population extends from the Gulf of Alaska, along Aleutian Islands to Commander Islands, with the main spawning grounds at the Aleutians and in the southeastern Bering Sea. From these areas, the fish at early stages of ontogenesis spread widely in system of the Bering Sea currents to the western-southwestern Bering Sea, where the atka mackerel aggregations are formed on the external shelf at prominent capes, as Cape Olyutorsky. Dynamics of the atka mackerel stock in the Olyutorsky-Navarinsky area in 1994–2019 is presented on the base of bottom trawl surveys, fishery statistics, and open NOAA data. After the period of low stock in the middle 1990s, the atka mackerel abundance increased sharply to the maximum in 2006–2008, when the spawning stock in this area was about 9.5 . 103 t and the commercial stock about 14.0 . 103 t. Since that time, trend to decreasing is observed, with the spawning stock 3.6 . 103 t and the commercial stock 5.6 . 103 t in 2013, and recent stabilization at the low level with slight decline continuing. A possible reason of the sharp increase in 2000s could be the intensive transport of the atka mackerel juveniles from the main spawning grounds at Aleutian Islands to the area at Cape Olyutorsky. The catches of atka mackerel in the Olyutorsky-Navarinsky area in 1994–2018 corresponded well with its stock dynamics.

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4

Willis, M. J., and B. G. Evans. "Fade countermeasures atKa band for olympus." International Journal of Satellite Communications 6, no. 3 (July 1988): 301–11. http://dx.doi.org/10.1002/sat.4600060308.

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5

Lauth, Robert R., Jared L. Guthridge, Daniel W. Cooper, and Scott W. McEntire. "Behavioral Ecology of Color Patterns in Atka Mackerel." Marine and Coastal Fisheries 2, no. 1 (January 2010): 399–411. http://dx.doi.org/10.1577/c09-025.1.

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6

Merrick, Richard L., M. Kathryn Chumbley, and G. Vernon Byrd. "Diet diversity of Steller sea lions (Eumetopias jubatus) and their population decline in Alaska: a potential relationship." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 6 (June 1, 1997): 1342–48. http://dx.doi.org/10.1139/f97-037.

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We examined the diet of Steller sea lions (Eumetopias jubatus) during June-August 1990-1993 from six areas in the Aleutian Islands and Gulf of Alaska and related these diets to sea lion population changes that occurred during the period. Seven general prey categories were identified, but either walleye pollock (Theragra chalcogramma) or Atka mackerel (Pleurogrammus monopterygius) dominated in every area. The diversity of prey consumed varied among sites. Only the eastern Aleutian Islands area had all seven categories in the diet, and there, walleye pollock and Atka mackerel each made up around 30% of the diet. The remainder was composed mostly of small schooling fish (e.g., Pacific herring (Clupea pallasi) and salmon (Oncorhynchus spp.)). The diet in the Gulf of Alaska included mostly walleye pollock whereas the central and western Aleutian diet was composed mostly of Atka mackerel. Populations in the six areas decreased up to 49% during 1990-1994. A strong positive correlation (r = 0.949, P = 0.004) was found between diet diversity and the amount of decline in an area: as diet diversity decreased, populations decreased. This suggests that sea lions need a variety of prey available, perhaps to buffer significant changes in abundance of any single prey.

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7

von der Osten-Woldenburg, H. "Icequakes on Ekström Ice Shelf Near Atka Bay, Antarctica." Annals of Glaciology 12 (1989): 206. http://dx.doi.org/10.1017/s0260305500007291.

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8

Osten-Woldenburg, H. Von Der. "Icequakes On Ekström Ice Shelf Near Atka Bay, Antarctica." Journal of Glaciology 36, no. 122 (1990): 31–36. http://dx.doi.org/10.1017/s0022143000005517.

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Abstract Two seismic arrays recorded in an 11 month field experiment in 1985 the seismicity of Ekström Ice Shelf in the area of an ice rumple and an inlet, situated respectively about 10 km north-west and 7 km north of the German Antarctic station Georg von Neumayer (lat. 70°37′S., long. 08°22′W). Most of the focal depths of the icequakes considered until now are in the range 5–9 m; the ice-rumple area shows extremely high seismic activity. Tensile fracture is the most frequent fault mechanism, although there are a few shear-fracture events. The ice rumple’s seismicity provides information on the dynamics of the ice shelf in this area. A comparison of this time-dependent seismicity with tides suggests that most of this seismicity is induced by tides. The most active period of this seismicity starts at the beginning of low tide and ends at low tide. The location of the epicentres of icequakes recorded at that time and the digital recording on tapes of the seismicity without interruption for 396 h shows a jerky vertical movement of the ice shelf in response to tides; this can be interpreted as a kind of “grater effect”, especially at the southern ice-rock boundary of the ice rumple. The seismicity in the inlet is much less and tensile fracture seems to be the only fault mechanism.

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9

Osten-Woldenburg, H. Von Der. "Icequakes On Ekström Ice Shelf Near Atka Bay, Antarctica." Journal of Glaciology 36, no. 122 (1990): 31–36. http://dx.doi.org/10.3189/s0022143000005517.

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AbstractTwo seismic arrays recorded in an 11 month field experiment in 1985 the seismicity of Ekström Ice Shelf in the area of an ice rumple and an inlet, situated respectively about 10 km north-west and 7 km north of the German Antarctic station Georg von Neumayer (lat. 70°37′S., long. 08°22′W). Most of the focal depths of the icequakes considered until now are in the range 5–9 m; the ice-rumple area shows extremely high seismic activity. Tensile fracture is the most frequent fault mechanism, although there are a few shear-fracture events. The ice rumple’s seismicity provides information on the dynamics of the ice shelf in this area. A comparison of this time-dependent seismicity with tides suggests that most of this seismicity is induced by tides. The most active period of this seismicity starts at the beginning of low tide and ends at low tide. The location of the epicentres of icequakes recorded at that time and the digital recording on tapes of the seismicity without interruption for 396 h shows a jerky vertical movement of the ice shelf in response to tides; this can be interpreted as a kind of “grater effect”, especially at the southern ice-rock boundary of the ice rumple.The seismicity in the inlet is much less and tensile fracture seems to be the only fault mechanism.

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10

von der Osten-Woldenburg, H. "Icequakes on Ekström Ice Shelf Near Atka Bay, Antarctica." Annals of Glaciology 12 (1989): 206. http://dx.doi.org/10.3189/s0260305500007291.

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11

Kontschán, Jenő. "Adatok az Aggteleki-karszt barlangjainak Mesostigmata atka faunájához (Acari)." Állattani Közlemények 103, no. 1-2 (2018): 33–45. http://dx.doi.org/10.20331/allkoz.2018.103.1-2.33.

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12

Canino, M. F., I. B. Spies, S. A. Lowe, and W. S. Grant. "Highly Discordant Nuclear and Mitochondrial DNA Diversities in Atka Mackerel." Marine and Coastal Fisheries 2, no. 1 (January 2010): 375–87. http://dx.doi.org/10.1577/c09-024.1.

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13

LEHNERT, HELMUT, ROBERT STONE, and WOLFGANG HEIMLER. "Two new species of Plakina Schulze, 1880 (Porifera, Plakinidae) from the Aleutian Islands (Alaska, USA)." Zootaxa 1068, no. 1 (October 21, 2005): 27. http://dx.doi.org/10.11646/zootaxa.1068.1.2.

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Plakina tanaga and Plakina atka n. spp. are described from the waters around the Aleutian Islands at depths between 118 and 146m. These are the first records of the genus from the Aleutian Islands. The new species described here are compared with the six species of Plakina previously reported from the Pacific. Both species belong to the Plakina trilopha species-complex and differ from other Pacific species of Plakina in their conspicuous convoluted surface pattern, color, and spiculation. In addition to the usual set of triods both species have a second category with basally spined rays. Plakina tanaga n. sp. has a strongly convoluted, microtuberculate surface, and a few small, thin spines at the basal rays of the triods, and relatively large trilophose calthrops. Plakina atka n. sp. has a smoother surface, more numerous larger and thicker basal spines at the triods, and considerably smaller lophocalthrops which are tetralophate.

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14

Poltev, Yu N., and I. N. Mukhametov. "Record of schooling of Atka mackerelPleurogrammus monopterygiusin waters off Iturup Island." Вопросы ихтиологии 53, no. 5 (2013): 621–24. http://dx.doi.org/10.7868/s0042875213040061.

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15

Heusser, Calvin J. "Late Quaternary vegetation of the Aleutian Islands, southwestern Alaska." Canadian Journal of Botany 68, no. 6 (June 1, 1990): 1320–26. http://dx.doi.org/10.1139/b90-168.

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Late Quaternary vegetational history of the Aleutian Islands is interpreted from fossil pollen and spore stratigraphy and radiocarbon chronology of sections of mires on the islands of Attu, Adak, Atka, and Umnak. Mires postdate the withdrawal of ice-age glaciers between approximately 12 000 and 10 000 years ago with the exception of the mire on Attu Island, where deglaciation apparently began as late as 7000 years ago. No uniform pattern of change in Pacific coastal tundra communities is evident in the fossil assemblages. Pollen assemblages, consisting variably of Gramineae, Cyperaceae, Empetrum, Umbelliferae, Salix, Ranunculaceae, Compositae, Polypodiaceae, and Lycopodium, reflect conditions in effect in different sectors of the Aleutian chain. Climate, soil, topography, volcanism, and seismic activity are noteworthy parameters influencing vegetation composition and distribution. Volcanism has been of major importance, as shown by thickness, distribution, and frequency of tephra layers that number 5 on Attu, 24 on Adak, 17 on Atka, and 5 on Umnak. A repeated condition of patch dynamics, created in the main by recurrent volcanic eruptions with widespread accompanying ashfalls, has apparently overprinted the effects of climatic change. Key words: Aleutian Islands, Quaternary, vegetation, fossil pollen, volcanism.

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16

Gauthier, Stéphane, and John K. Horne. "Acoustic characteristics of forage fish species in the Gulf of Alaska and Bering Sea based on Kirchhoff-approximation models." Canadian Journal of Fisheries and Aquatic Sciences 61, no. 10 (October 1, 2004): 1839–50. http://dx.doi.org/10.1139/f04-117.

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Acoustic surveys are routinely used to assess fish abundance. To ensure accurate population estimates, the characteristics of echoes from constituent species must be quantified. Kirchhoff-ray mode (KRM) backscatter models were used to quantify acoustic characteristics of Bering Sea and Gulf of Alaska pelagic fish species: capelin (Mallotus villosus), Pacific herring (Clupea pallasii), walleye pollock (Theragra chalcogramma), Atka mackerel (Pleurogrammus monopterygius), and eulachon (Thaleichthys pacificus). Atka mackerel and eulachon do not have swimbladders. Acoustic backscatter was estimated as a function of insonifying frequency, fish length, and body orientation relative to the incident wave front. Backscatter intensity and variance estimates were compared to examine the potential to discriminate among species. Based on relative intensity differences, species could be separated in two major groups: fish with gas-filled swimbladders and fish without swimbladders. The effects of length and tilt angle on echo intensity depended on frequency. Variability in target strength (TS) resulting from morphometric differences was high for species without swimbladders. Based on our model predictions, a series of TS to length equations were developed for each species at the common frequencies used by fisheries acousticians.

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17

Hoppmann, Mario, Marcel Nicolaus, Stephan Paul, Priska A. Hunkeler, Günther Heinemann, Sascha Willmes, Ralph Timmermann, et al. "Ice platelets below Weddell Sea landfast sea ice." Annals of Glaciology 56, no. 69 (2015): 175–90. http://dx.doi.org/10.3189/2015aog69a678.

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AbstractBasal melt of ice shelves may lead to an accumulation of disc-shaped ice platelets underneath nearby sea ice, to form a sub-ice platelet layer. Here we present the seasonal cycle of sea ice attached to the Ekström Ice Shelf, Antarctica, and the underlying platelet layer in 2012. Ice platelets emerged from the cavity and interacted with the fast-ice cover of Atka Bay as early as June. Episodic accumulations throughout winter and spring led to an average platelet-layer thickness of 4 m by December 2012, with local maxima of up to 10 m. The additional buoyancy partly prevented surface flooding and snow-ice formation, despite a thick snow cover. Subsequent thinning of the platelet layer from December onwards was associated with an inflow of warm surface water. The combination of model studies with observed fast-ice thickness revealed an average ice-volume fraction in the platelet layer of 0.25 ± 0.1. We found that nearly half of the combined solid sea-ice and ice-platelet volume in this area is generated by heat transfer to the ocean rather than to the atmosphere. The total ice-platelet volume underlying Atka Bay fast ice was equivalent to more than one-fifth of the annual basal melt volume under the Ekström Ice Shelf.

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18

Waite, J. N., V. N. Burkanov, and R. D. Andrews. "Prey competition between sympatric Steller sea lions (Eumetopias jubatus) and northern fur seals (Callorhinus ursinus) on Lovushki Island, Russia." Canadian Journal of Zoology 90, no. 1 (January 2012): 110–27. http://dx.doi.org/10.1139/z11-117.

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Approximately 1 000 Steller sea lions ( Eumetopias jubatus (Schreber, 1776); SSL) and 14 000 northern fur seals ( Callorhinus ursinus (L., 1758); NFS) breed sympatrically on Lovushki Island in the Russian Far East, creating the potential for interspecific competition for prey. An additional 13 000 – 14 000 juvenile NFS are present during the breeding season. The diets of breeding SSL and both breeding and juvenile NFS were examined through analysis of scats and spews collected during the breeding seasons of 2003, 2005, and 2007–2008. There were significant overlaps in the prey species and size selection of SSL and juvenile NFS. There were significant differences between the diets of SSL and breeding NFS. SSL and juvenile NFS fed primarily on Atka mackerel ( Pleurogrammus monopterygius (Pallas, 1810)), while breeding NFS fed on cephalopods, salmon (genus Oncorhynchus Suckley, 1861), Atka mackerel, and northern smoothtongue ( Leuroglossus schmidti Rass, 1955). The partitioning of resources between breeding animals has allowed both species to coexist within the same region and likely reflected differences in foraging abilities and provisioning strategies of the adults and the fasting abilities of their pups. However, continued growth of the NFS population may lead to the exclusion of SSL owing to interspecific competition for prey.

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19

Bartsch, Ilse. "Antarctic Halacaridae (Acari), new records, these species characteristics and an updated list of species." Polish Polar Research 37, no. 1 (March 1, 2016): 131–54. http://dx.doi.org/10.1515/popore-2016-0007.

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AbstractFour halacarid species:Agaue agauoides,Agaue parva,Bradyagaue drygalskii, andHalacarus minorhave been extracted from bottom samples taken in Admiralty Bay, King George Island, South Shetland Islands, another four,Colobocerasides auster,Halacarus arnaudi,Lohmannella fukushimai, andL. gaussi, from Kapp Norvegia, Atka and Halley Bay, Weddell Sea. Most of these species are widespread around Antarctica and adjacent islands. Diagnostic characters are outlined. An annotated list presents 66 halacarid species reported from south of the Antarctic Polar Front.

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20

Poltev, Yu N., and I. N. Mukhametov. "Finding of aggregation of Atka mackerel Pleurogrammus monopterygius in waters off Iturup Island." Journal of Ichthyology 53, no. 8 (September 2013): 641–44. http://dx.doi.org/10.1134/s0032945213040061.

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21

Cooper, Daniel W., Susanne F. McDermott, and James N. Ianelli. "Spatial and Temporal Variability in Atka Mackerel Female Maturity at Length and Age." Marine and Coastal Fisheries 2, no. 1 (January 2010): 329–38. http://dx.doi.org/10.1577/c09-045.1.

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22

McDermott, Susanne F. "Introduction to a Special Section: Atka Mackerel Distribution, Life History, Ecology, and Management." Marine and Coastal Fisheries 2, no. 1 (January 2010): 304–5. http://dx.doi.org/10.1577/c10-038.1.

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23

Kleinertz, S., S. Christmann, L. M. R. Silva, J. Hirzmann, C. Hermosilla, and A. Taubert. "Gastrointestinal parasite fauna of Emperor Penguins (Aptenodytes forsteri) at the Atka Bay, Antarctica." Parasitology Research 113, no. 11 (August 28, 2014): 4133–39. http://dx.doi.org/10.1007/s00436-014-4085-4.

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24

Arndt, Stefanie, Mario Hoppmann, Holger Schmithüsen, Alexander D. Fraser, and Marcel Nicolaus. "Seasonal and interannual variability of landfast sea ice in Atka Bay, Weddell Sea, Antarctica." Cryosphere 14, no. 9 (August 31, 2020): 2775–93. http://dx.doi.org/10.5194/tc-14-2775-2020.

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Abstract. Landfast sea ice (fast ice) attached to Antarctic (near-)coastal elements is a critical component of the local physical and ecological systems. Through its direct coupling with the atmosphere and ocean, fast-ice properties are also a potential indicator of processes related to a changing climate. However, in situ fast-ice observations in Antarctica are extremely sparse because of logistical challenges and harsh environmental conditions. Since 2010, a monitoring program observing the seasonal evolution of fast ice in Atka Bay has been conducted as part of the Antarctic Fast Ice Network (AFIN). The bay is located on the northeastern edge of Ekström Ice Shelf in the eastern Weddell Sea, close to the German wintering station Neumayer III. A number of sampling sites have been regularly revisited each year between annual ice formation and breakup to obtain a continuous record of sea-ice and sub-ice platelet-layer thickness, as well as snow depth and freeboard across the bay. Here, we present the time series of these measurements over the last 9 years. Combining them with observations from the nearby Neumayer III meteorological observatory as well as auxiliary satellite images enables us to relate the seasonal and interannual fast-ice cycle to the factors that influence their evolution. On average, the annual consolidated fast-ice thickness at the end of the growth season is about 2 m, with a loose platelet layer of 4 m thickness beneath and 0.70 m thick snow on top. Results highlight the predominately seasonal character of the fast-ice regime in Atka Bay without a significant interannual trend in any of the observed variables over the 9-year observation period. Also, no changes are evident when comparing with sporadic measurements in the 1980s and 1990s. It is shown that strong easterly winds in the area govern the year-round snow distribution and also trigger the breakup of fast ice in the bay during summer months. Due to the substantial snow accumulation on the fast ice, a characteristic feature is frequent negative freeboard, associated flooding of the snow–ice interface, and a likely subsequent snow ice formation. The buoyant platelet layer beneath negates the snow weight to some extent, but snow thermodynamics is identified as the main driver of the energy and mass budgets for the fast-ice cover in Atka Bay. The new knowledge of the seasonal and interannual variability of fast-ice properties from the present study helps to improve our understanding of interactions between atmosphere, fast ice, ocean, and ice shelves in one of the key regions of Antarctica and calls for intensified multidisciplinary studies in this region.

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김양섭. "Historical research on Chinese characters and folk tales of Atka Mackerel, Sandfish, Alaska Pollack." Korean Journal of Folk Studies ll, no. 38 (June 2016): 5–31. http://dx.doi.org/10.35638/kjfs..38.201606.001.

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26

Nichol, DG, and DA Somerton. "Diurnal vertical migration of the Atka mackerel Pleurogrammus monopterygius as shown by archival tags." Marine Ecology Progress Series 239 (2002): 193–207. http://dx.doi.org/10.3354/meps239193.

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27

Canino, M. F., I. B. Spies, J. L. Guthridge, and M. M. Hollowed. "Genetic Assessment of the Mating System and Patterns of Egg Cannibalism in Atka Mackerel." Marine and Coastal Fisheries 2, no. 1 (January 2010): 388–98. http://dx.doi.org/10.1577/c09-023.1.

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MCDERMOTT, SUSANNE F., L. W. FRITZ, and V. HAIST. "Estimating movement and abundance of Atka mackerel (Pleurogrammus monopterygius) with tag-release-recapture data." Fisheries Oceanography 14, s1 (November 2005): 113–30. http://dx.doi.org/10.1111/j.1365-2419.2005.00380.x.

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Setyo Wibowo, Danar, and Sri Endah Wahyuningsih. "The accountability of the Criminal Case Relating to the Act made by Act No. 2 of 2014." Jurnal Akta 6, no. 2 (August 30, 2019): 405. http://dx.doi.org/10.30659/akta.v6i2.5086.

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Notaries are public officials appointed by the government to help the public make the agreements which are or appear in public. The purpose of the presence of a written agreement is to ensure legal certainty of the stakeholders of the agreement. The written agreement made before a notary deed called. Atka could be used as evidence if there is a dispute between the parties to the dispute, with the explanation of the importance of this function in tulisakan act until the regulations of Law No. 2 of 2014Keywords: notary; Responsibility for crime; legal protection

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Orlov, A. M., and S. E. Frenkel’. "Feeding Habits of the Atka Mackerel Pleurogrammus monopterygius in Waters off the Central Kuril Islands." Journal of Ichthyology 59, no. 1 (January 2019): 58–64. http://dx.doi.org/10.1134/s0032945219010107.

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31

Hammad, Hany F., Alois P. Freundorfer, and Yahia M. M. Antar. "Monolithic CPW-based multiband unconditionally stable common source and common gate mesfet amplifiers atKa band." Microwave and Optical Technology Letters 34, no. 1 (May 21, 2002): 1–3. http://dx.doi.org/10.1002/mop.10354.

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McDermott, Susanne F., Daniel W. Cooper, Jared L. Guthridge, Ingrid B. Spies, Mike F. Canino, Pamela Woods, and Nicola Hillgruber. "Effects of Maternal Growth on Fecundity and Egg Quality of Wild and Captive Atka Mackerel." Marine and Coastal Fisheries 3, no. 1 (January 2011): 324–35. http://dx.doi.org/10.1080/19425120.2011.608592.

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Koulakov, Ivan, Ekaterina Boychenko, and Sergey Z. Smirnov. "Magma Chambers and Meteoric Fluid Flows Beneath the Atka Volcanic Complex (Aleutian Islands) Inferred from Local Earthquake Tomography." Geosciences 10, no. 6 (June 2, 2020): 214. http://dx.doi.org/10.3390/geosciences10060214.

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Atka is a subduction-related volcanic island located in the central part of Aleutian Arc. The northeastern part of this island forms the Atka Volcanic Complex (AVC), which is built as a relict shield volcano of a circular shape overlain by several active and extinct volcanic vents of different ages. During the past few decades, two active volcanoes within AVC—Korovin and Kliuchef—demonstrated mostly phreatic eruptions and intensive fumarolic activity. We have created the first tomographic model of the crust beneath AVC with the use of data of eight permanent stations of the Alaskan Volcanological Observatory operated in the time period from 2004 to 2017 that included arrival times of the P and S waves from local seismicity. Based on a series of checkerboard tests, we have demonstrated fair vertical and horizontal resolution of the model down to ~6 km depth. Beneath the Korovin and Kliuchef volcanoes, we have revealed two isolated anomalies of high Vp/Vs with values exceeding 2, which represent separate magma chambers that are responsible for magmatic eruptions of these two volcanoes. In shallow layers down to 2–3 km deep, we observe an alternation of zones with low and high values of the Vp/Vs ratio, which are likely associated with the circulation of meteoric fluids in the uppermost crust. Moderately high Vp/Vs anomalies indicate zones of meteoric water penetration down to the ground. On the other hand, the very low values of Vp/Vs reaching 1.5 depict the areas where meteoric water reached the hot magma reservoir and transformed into steam. On the surface, these zones coincide with the distributions of fumaroles. The outflow of these steam currents from active vents of Korovin and Kliuchef led to episodic phreatic eruptions, sometimes synchronous.

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Chetyrbotskiy, A. N., A. N. Vdovin, and V. A. Chetyrbotskiy. "The Numerical Model of Fish Growth Dynamics (On the Example of Okhotsk Atka Mackerel Pleurogrammus azonus)." Mathematical Biology and Bioinformatics 15, no. 2 (July 22, 2020): 118–28. http://dx.doi.org/10.17537/2020.15.118.

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A complex model of the system is proposed, the dynamic variables of which are the length, fish’s weight and the weight of its food lump. The model’s mathematical formalization is performed in terms of the ordinary differential equations apparatus. The solution to the parametric identification problem of the model is based on the author's representative sample for long-term observations. Computational experiments show that the representation of the indicators dynamics fish’s weight, length and the weight of the food lump is determined by some functions of the components from this set. The hierarchy of relationships between indicators determines the structure of these functions. It turned out that the dynamics of length is practically independent of the food lump’s weight, which in this case is an external energy source of the body’s vital activity. The energy “mediator” is body weight. The dynamics of body weight is determined by the weight of the food lump and the actual body weight. The negative coefficient calculated when solving the problem of parametric identification with body weight reduces the intensity of its dynamics. It seems that this coefficient reflects the expenditure of the body on the processes of its metabolism. The dynamics of length has a cumulative character (only positive gains). The body weight dynamics is determined by the accumulation and loss of vital activity of organic matter (positive and negative gains). The jump in the dynamics of weight is due to the high energy costs of fish for the intensive formation of reproductive products in the pre-spawning period and the energy costs of subsequent spawning. The dynamics of the food lump depends on the weight of the fish and is regulated by seasonal endogenous and exogenous rhythms of the fish's life cycle. Weight gain largely determines the intensity of nutrition than the diet determines the rate of weight growth. A measure of the adequacy between the model and sample distributions here is the correlation coefficient between them. In the case under consideration, it is close to its maximum (single) value, which indicates their high proximity.

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Lee, Sung-Il, Jae-Hyeong Yang, Sang-Chul Yoon, Young-Yull Chun, Jong-Bin Kim, Hyung-Kee Cha, Dae-Soo Chang, and Jae-Won Kim. "Maturity and Spawning of the Atka Mackerel, Pleurogrammus azonus (Jordan and Metz) in the East Sea." Korean Journal of Fisheries and Aquatic Sciences 42, no. 6 (December 31, 2009): 633–41. http://dx.doi.org/10.5657/kfas.2009.42.6.633.

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36

Matta, Mary Elizabeth, Kimberly M. Rand, Morgan B. Arrington, and Bryan A. Black. "Competition-driven growth of Atka mackerel in the Aleutian Islands ecosystem revealed by an otolith biochronology." Estuarine, Coastal and Shelf Science 240 (August 2020): 106775. http://dx.doi.org/10.1016/j.ecss.2020.106775.

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37

Solomatov, S. F., D. V. Antonenko, A. A. Balanov, and P. V. Kalchugin. "New data on the occurrence of Atka mackerel Pleurogrammus monopterygius (Hexagrammidae) in the Sea of Japan." Journal of Ichthyology 49, no. 1 (January 2009): 66–72. http://dx.doi.org/10.1134/s0032945209010081.

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38

Cooper, Daniel, and Susanne McDermott. "Seasonal, Small-Scale Distribution of Atka Mackerel in the Aleutian Islands, Alaska, with Respect to Reproduction." Marine and Coastal Fisheries 3, no. 1 (January 2011): 10–20. http://dx.doi.org/10.1080/19425120.2011.558439.

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39

Myers, James D., Bruce D. Marsh, Carol D. Frost, and Jennifer A. Linton. "Petrologic constraints on the spatial distribution of crustal magma chambers, Atka Volcanic Center, central Aleutian arc." Contributions to Mineralogy and Petrology 143, no. 5 (August 2002): 567–86. http://dx.doi.org/10.1007/s00410-002-0356-7.

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40

McIntyre, T., L. J. Stansfield, H. Bornemann, J. Plötz, and M. N. Bester. "Hydrographic influences on the summer dive behaviour of Weddell seals (Leptonychotes weddellii) in Atka Bay, Antarctica." Polar Biology 36, no. 11 (August 22, 2013): 1693–700. http://dx.doi.org/10.1007/s00300-013-1384-7.

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41

SPIES, INGRID B., SANDRA LOWE, YVONNE HONG, and MICHAEL F. CANINO. "Development and characterization of seven novel di-, tri-, and tetranucleotide microsatellite markers in Atka mackerel (Pleurogrammus monopterygius)." Molecular Ecology Notes 5, no. 3 (September 2005): 469–71. http://dx.doi.org/10.1111/j.1471-8286.2005.00947.x.

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42

Myers, James D., Bruce D. Marsh, and A. Krishna Sinha. "Geochemical and strontium isotopic characteristics of parental Aleutian arc magmas: evidence from the basaltic lavas of Atka." Contributions to Mineralogy and Petrology 94, no. 1 (September 1986): 1–11. http://dx.doi.org/10.1007/bf00371221.

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43

SHEAR, WILLIAM A., and SHAHAN DERKARABETIAN. "Nomenclatorial changes in Triaenonychidae: Sclerobunus parvus Roewer is a junior synonym of Paranonychus brunneus (Banks), Mutusnonychus Suzuki is a junior synonym of Paranonychus Briggs, and Kaolinonychinae Suzuki is a junior synonym of Paranonychinae Briggs (Opiliones: Triaenonychidae)." Zootaxa 1809, no. 1 (June 25, 2008): 67. http://dx.doi.org/10.11646/zootaxa.1809.1.5.

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The harvestman species Sclerobunus parvus was described by Roewer (1931) from the Queen Charlotte Islands, British Columbia, Canada. Some forty years later, Briggs (1971) revised the Triaenonychidae of North America, but missed including Roewer’s species, which had not been mentioned in the literature since its description. Briggs (1971) recognized two subfamilies in North America, Triaenonychinae Sørensen 1886 (Briggs attributed the subfamily name to Pocock, but according to the International Code of Zoological Nomenclature, Sørensen’s original proposal of the family name included the nominate subfamily) and Paranonychinae Briggs 1971. Paranonychinae included two new genera, Metanonychus Briggs 1971 and Paranonychus Briggs 1971. The latter genus was based on Sclerobunus brunneus Banks 1893, a commonly occurring species distributed from Clackamas County, Oregon, north to Atka Island, Alaska (Briggs 1971).

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44

Kovács, Balázs, Boglárka Láng, Anna Takácsi-Nagy, Györgyi Horváth, Cecília Czakó, Anita Csorba, Huba Kiss, Irén Szalai, Zoltán Zsolt Nagy, and Illés Kovács. "Meibom-mirigy-diszfunkció és a száraz szem." Orvosi Hetilap 162, no. 2 (January 10, 2021): 43–51. http://dx.doi.org/10.1556/650.2021.31958.

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Összefoglaló. A szárazszem-panaszok hátterében gyakran áll Meibom-mirigy-diszfunkció, melynek felismerése kiemelten fontos a hatékony kezelés érdekében. A Meibom-mirigyek kóros működése miatt a termelt lipid nem oszlik el megfelelően a szemfelszínen, így a könnyfilm párolgása fokozódik. A könnytermelési zavar következtében szárazszem-panaszok alakulnak ki, melyek a hagyományos könnypótló kezelésre rendszerint csak átmenetileg javulnak. A Meibom-mirigy-diszfunkciót gyakran kíséri a szemhéjszél Demodex-atka-fertőzése – az atka eradikálása szükséges a mirigyek működésének helyreállításához és ezáltal a panaszok megszüntetéséhez. A Meibom-mirigy-diszfunkció a leggyakrabban enyhe formában jelentkezik; a terápia ilyenkor a beteg által is elvégezhető szemhéjtisztításból áll, míg a gyógyszeres kezelés csak az előrehaladottabb, kifejezett gyulladással járó formákban szükséges. Az összefoglaló áttekinti a Meibom-mirigy-diszfunkció klinikai jeleivel és kezelésével kapcsolatos legfontosabb tudnivalókat, különös tekintettel a Demodex-fertőzés felismerésére és kezelésére vonatkozóan. Orv Hetil. 2021; 162(2): 43–51. Summary. The onset of dry eye complaints is often a result of Meibomian gland dysfunction and its diagnosis is essential for effective treatment. In the case of Meibomian gland dysfunction, there is an increased evaporation of the tear film due to the abnormal secretion of lipids that cannot spread on the ocular surface. The treatment of dry eye complaints associated with Meibomian gland dysfunction with tear supplementation is usually ineffective and only results in an intermittent relief of complaints. Meibomian gland dysfunction is often associated with Demodex infestation of the eyelids, and eradicating the mites is essential to re-establish normal meibum production and thus, decreasing ocular complaints. In most cases, Meibomian gland dysfunction is mild, and the treatment of these forms is based on ocular hygiene performed by the patient, while only more advanced forms with inflammatory processes require pharmacologic treatment. This review summarizes the most important knowledge on the clinical signs and treatment of Meibomian gland dysfunction with particular attention to the diagnosis and treatment of ocular Demodex infection. Orv Hetil. 2021; 162(2): 43–51.

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45

Günther, Sven, and Gerhard S. Dieckmann. "Vertical zonation and community transition of sea-ice diatoms in fast ice and platelet layer, Weddell Sea, Antarctica." Annals of Glaciology 33 (2001): 287–96. http://dx.doi.org/10.3189/172756401781818590.

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AbstractChanges in the taxonomic composition of diatoms in fast ice as well as in the underlying platelet layer were followed from June to December 1995 in Atka Bay Antarctica. Four communities were clearly distinguished: (1) an interior community dominated by flagellates in spring; (2) a bottom community dominated by a small form of Fragilariopsis cylindrus; (3) a platelet-ice layer dominated by Amphiprora Kufferathii and Thalassionema sp. growing attached to the ice platelets; and (4) an interstitial community dominated by Chaetoceros neglectus growing in the water between the platelets. Species composition distribution and succession in these communities were related to changes in silicate concentration, pore space and ice-formation processes and the ability of some cells to grow attached to ice platelets. The presence of the platelet-layer communities may have implications for paleoglaciology

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46

YANG, Jae-Hyeong, Byoung-Sun YOON, Jong-Bin KIM, Young-Min CHOI, Jeong-Ho PARK, Jae-Bong LEE, Kie-Young PARK, and Dong-Jin LEE. "Age and growth of the Okhotsk atka mackerel, Pleurogrammus azonus in the coastal of Gangwon-do, East Sea." Journal of the Korean Society of Fisheries Technology 54, no. 1 (February 28, 2018): 54–64. http://dx.doi.org/10.3796/ksfot.2018.54.1.054.

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47

Kurbanov, Y. K. "CHARACTERISTICS OF FISHERY OF ATKA MACKEREL ( PLEUROGRAMMUS MONOPTERYGIUS, HEXAGRAMMIDAE) IN EASTERN KAMCHATKA AND KURIL ISLANDS WATERS IN 2010–2018." Problems of fisheries 20, no. 3 (2019): 350–62. http://dx.doi.org/10.36038/0234-2774-2019-20-3-350-362.

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48

Kuznetsova, Natalia A. "Feeding and food supply of juvenile fishes in the eastern Bering Sea in 2003-2012." Izvestiya TINRO 181, no. 2 (June 30, 2015): 129–40. http://dx.doi.org/10.26428/1606-9919-2015-181-129-140.

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Feeding of fish juveniles in the eastern Bering Sea is investigated for the periods of 2003-2006 considered as relatively «warm» and 2007-2012 considered as relatively «cold». Small- and medium-sized zooplankton was the dominant prey in the 2003-2006, in particular copepods prevailed in the food of walleye pollock (41.5 %), pacific herring (48.3 %), and sand lance (71.7 %) juveniles, which in turn were the prey for pollock, herring and cod yearlings and other predators. On the contrary, large-sized zooplankton was more abundant in the 2007-2012, so arrowwarms ( Sagitta sp.), large-sized copepods (in particular Calanus marshallae ), euphausiids (mainly Thysanoessa raschii ), hyperiids, and pteropods were the prey for young fish: C. marshallae - for juveniles of pollock (40-45 % by weight) and capelin (32-34 %), Th. raschii - for yearlings of pollock (51 %) and herring (36-46 %), cold-water hyperiid T. libellula - for adult pollock (24 %), juvenile cod (9-18 %) and juvenile herring (9-11 %), whereas portion of fish in the diets was insignificant. In the warm period (2003-2006), juvenile pollock, herring, sand lance and capelin were zooplankton-eaters with the diets similarity 67 %, while yearlings of pollock and juveniles of cod, herring, sandfish, and atka mackerel were fish-eaters preying upon pollock juveniles. In the cold period (2007-2012), the diets of juvenile pollock, juvenile and adult capelin, and juvenile sand lance were also similar at 85-70 % but they preferred large-sized copepods and euphausiids ( C. marshallae and Th. raschii ), while yearlings of pollock, yearlings and adults of herring, and juveniles of sand fish and cod had the diets of 70 % similarity with Th. raschii prevalence. Feeding intensity was high for all species: the mean stomach fullness was 150-200 ‱ for pollock juveniles and yearlings, 200-250 ‱ for cod juveniles, 200-258 ‱ for sand lance juveniles, 302 ‱ for herring juveniles, and 178-250 ‱ for juvenile atka mackerel. The fullness had diurnal rhythm with three peaks: at noon - up to 179 ‱, in evening - up to 213 ‱, and at night - up to 204 ‱ (the data for walleye pollock juveniles in «cold» years only). Daily food ration of juvenile pollock is estimated as 6.7 % of its body weight in the «warm» years and 7.0 % in the «cold» years.

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Balanov, A. A., and A. D. Kukhlevskii. "Atka mackerel Pleurogrammus monopterygius (Pallas, 1810) (Pisces, Hexagrammidae) in the Sea of Japan—Confirmation on the basis of genetic data." Journal of Ichthyology 49, no. 9 (November 2009): 829–33. http://dx.doi.org/10.1134/s0032945209090148.

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50

Rand, Kimberly M., and Sandra A. Lowe. "Defining Essential Fish Habitat for Atka Mackerel with Respect to Feeding within and Adjacent to Aleutian Islands Trawl Exclusion Zones." Marine and Coastal Fisheries 3, no. 1 (January 2011): 21–31. http://dx.doi.org/10.1080/15427951.2010.558402.

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Journal articles on the topic 'Atka'

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