Nauki Ścisłe i Nauki o Ziemi

Polish Polar Research

Zawartość

Polish Polar Research | 2007 | vol. 28 | No 3 |

Abstrakt

Twelve glaciers, representing various types, were investigated between 2000 and 2005, in a region adjacent to the northern reaches of Billefjorden, central Spitsbergen ( Svalbard ). On the basis of measurements taken using reference points, DGPS and GPS systems, analyses of aerial photographs and satellite images, geomorphological indicators and archival data their rates of deglaciation following the “Little Ice Age” (LIA) maximum were calculated variously on centennial, decadal and annual time scales. As most Svalbard glaciers have debris-covered snouts, a clean ice margin was measured in the absence of debris-free ice front. The retreat rates for both types of ice fronts were very similar. All studied glaciers have been retreating since the termination of the Little Ice Age at the end of 19th century. The fastest retreat rate was observed in the case of the Nordenskiöldbreen tidewater glacier (mean average linear retreat rate 35 m a-1). For land-terminating glaciers the rates were in range of 5 to 15 m a-1. Presumably owing to climate warming, most of the glacier retreat rates have increased several fold in recent decades. The secondary factors influencing the retreat rates have been identified as: water depth at the grounding line in the case of tidewater glaciers, surging history, altitude, shape and aspect of glacier margin, and bedrock relief. The retreat rates are similar to glaciers from other parts of Spitsbergen . Analyses of available data on glacier retreat rates in Svalbard have allowed us to distinguish four major types: very dynamic, surging tidewater glaciers with post-LIA retreat rates of between 100 and 220 m a-1, other tidewater glaciers receding of a rate of 15 to 70 m a-1, land terminating valley polythermal glaciers with an average retreat of 10 to 20 m a-1 and small, usually cold, glaciers with the retreat rates below 10 m a-1.

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Autorzy i Afiliacje

Grzegorz Rachlewicz
Witold Szczuciński
Marek Ewertowski

Abstrakt

During the late 2007 austral summer, 20 sediment samples were collected in Admiralty Bay (King George Island, South Shetlands, West Antarctica) from 8 down to 254 m water-depth (mwd). The samples yielded abundant assemblage of monothalamous benthic foraminifera, belonging to at least 40 morphospecies. They constituted the first such collection from Antarctic Peninsula fjords and provided a new insight into this group’s diversity and distribution. Among organic-walled taxa, Psammophaga sp., Allogromia cf. crystallifera, and three morphotypes of Gloiogullmia were especially abundant. Agglutinated forms were dominated by Hippocrepinella hirudinea, Psammosphaera spp., Lagenammina spp., and various mudballs. Although, the majority of the morphotypes were known from other high-latitude locations, some were reported for the first time. Our quantitative data (>125 µm) showed the greatest differences between monothalamous foraminifera assemblages at shallowest water depths above 50 mwd. The deepest assemblages from between 179 and 254 mwd, were most similar, suggesting uniform near-bottom conditions at ~200 mwd throughout the Admiralty Bay.

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Autorzy i Afiliacje

Wojciech Majewski
Béatrice Lecroq
Frédéric Sinniger
Jan Pawłowski

Abstrakt

The common and ecologically important cyanobacterial form-genus Leptolyngbya is widely distributed in numerous ecosystems over the Earth's biosphere. Several morphospecies dominate microbial communities in polar habitats, but their diversity and local ecological significance are little known. Several articles characterising strains isolated from Antarctic coastal habitats by molecular methods were published, but knowledge of their phenotype and ecological characters are indispensable for future detailed environmental studies. Distinct morpho- and ecotypes (ecologically important morphospecies) from maritime Antarctica are characterised in this article. Eight dominant Leptolyngbya types from subaerophytic and freshwater habitats were recognised, and four of them (L. borchgrevinkii, L. fritschiana, L. nigrescens and L. vincentii) are described as new distinct species.

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Autorzy i Afiliacje

Jiří Komárek

Redakcja

Editors-in-Chief

Magdalena BŁAŻEWICZ (Life Sciences), University of Łódź, Poland
e-mail: magdalena.blazewicz@biol.uni.lodz.pl


Wojciech MAJEWSKI (Geosciences), Institute of Paleobiology PAS, Poland
e-mail: wmaj@twarda.pan.pl


Michał ŁUSZCZUK (Social Science and Hummanities), UMCS, Poland
e-mail: michal.luszczuk@poczta.umcs.lublin.pl

Associate Editors

Piotr JADWISZCZAK (Białystok),

e-mail: piotrj@uwb.edu.pl

Krzysztof JAŻDŻEWSKI (Łódź),

e-mail: krzysztof.jazdzewski@biol.uni.lodz.pl

Monika KĘDRA (Sopot)

e-mail: kedra@iopan.gda.pl

Ewa ŁUPIKASZA (Sosnowiec)

e-mail: ewa.lupikasza@us.edu.pl

Piotr PABIS (Łódź),

e-mail: cataclysta@wp.pl


Editorial Advisory Board


Angelika BRANDT (Hamburg),

Claude DE BROYER (Bruxelles),

Peter CONVEY (Cambridge, UK),

J. Alistair CRAME (Cambridge, UK),

Rodney M. FELDMANN (Kent, OH),

Jane E. FRANCIS (Cambridge, UK),

Andrzej GAŹDZICKI (Warszawa)

Aleksander GUTERCH (Warszawa),

Jacek JANIA (Sosnowiec),

Jiří KOMÁREK (Třeboň),

Wiesława KRAWCZYK (Sosnowiec),

German L. LEITCHENKOV (Sankt Petersburg),

Jerónimo LÓPEZ-MARTINEZ (Madrid),

Sergio A. MARENSSI (Buenos Aires),

Jerzy NAWROCKI (Warszawa),

Ryszard OCHYRA (Kraków),

Maria OLECH (Kraków)

Sandra PASSCHIER (Montclair, NJ),

Jan PAWŁOWSKI (Genève),

Gerhard SCHMIEDL (Hamburg),

Jacek SICIŃSKI (Łódź),

Michael STODDART (Hobart),

Witold SZCZUCIŃSKI (Poznań),

Andrzej TATUR (Warszawa),

Wim VADER (Tromsø),

Tony R. WALKER (Halifax, Nova Scotia),

Jan Marcin WĘSŁAWSKI (Sopot) - President.

 

Kontakt

Geosciences
Wojciech MAJEWSKI
e-mail: wmaj@twarda.pan.pl
phone: (48 22) 697 88 53

Instytut Paleobiologii PAN
ul. Twarda 51/55
00-818 Warszawa, POLAND


Life Sciences
Magdalena BŁAŻEWICZ
e-mail: magdalena.blazewicz@biol.uni.lodz.pl
phone: (48 22) 635 42 97

Zakład Biologii Polarnej i Oceanobiologii Uniwersytet Łódzki
ul. S. Banacha 12/16
90-237 Łódź, POLAND


Social Science and Hummanities
Michał ŁUSZCZUK
phone: (48 81) 537 68 99

Instytut Geografii Społeczno-Ekonomicznej i Gospodarki Przestrzennej UMCS
Al. Kraśnicka 2D
20-718 Lublin, POLAND

Instrukcje dla autorów

Instructions for authors

The quarterly Polish Polar Research invites original scientific papers dealing with all aspects of polar research. The journal aims to provide a forum for publication of high-quality research papers, which are of international interest.

Articles must be written in English. Authors are requested to have their manuscript read by a person fluent in English before submission. They should not be longer than 30 typescript pages, including tables, figures and references. However, upon request, longer manuscripts may be considered for publication. All papers are peer-reviewed. With a submitted manuscript, authors should provide their names, affiliations, ORCID number and e-mail addresses of at least three suggested reviewers.

Submission of the manuscript should be supported with a declaration that the work described has not been published previously nor is under consideration by another journal.

For text submission, Word file format is preferred. The text should be prepared in single-column double-spaced format and 25 mm margins. Consult the current issue of the journal for layout and conventions. Figures and tables should be prepared as separate files. Line art images should be scanned and saved as bitmap (black and white) images at a resolution of 600–1200 dpi and tightly cropped. Computer versions of the photographs should be saved in TIFF format of at least 400 dpi (non-interpolated). Maximal publication size of illustrations is 126×196 mm. Authors must make sure that graphics are clearly readable at this size. ‘Hairline’ line width must not be used. All chart axes need to be labeled in full. For labeling sub-graphics in a single figure, capital letters placed in the upper left corner are preferred. Bold letters should not be used in tables (including headers), except to highlight a significant value/information.

A limited number of color reproductions in print is free of charge. Color artwork in PDF is free of charge.

Title should be concise, informative and no longer than 15 words. Abstract should have no more than 250 words. The authors are requested to supply up to 5 keywords, different than words used in the title. The references should be arranged alphabetically and chronologically. Journal names should not be abbreviated. Please, ensure that every reference cited in the text is also present in the reference list and vice versa.
Responsibility for the accuracy of bibliographic citations lies entirely with the authors. The inline references to published papers should consist of the surname of the author(s) followed by the year of publication. More than two authors should be cited with the first author’s surname, followed by et al. (Dingle et al. 1998) but in full in the References.

Examples:
ANDERSON J.B. 1999. Antarctic Marine Geology. Cambridge University Press, Cambridge.
BIRKENMAJER K. 1991. Tertiary glaciation in the South Shetland Islands, West Antarctica: evaluation of data. In: M.R.A. Thomson, J.A. Crame and J.W. Thomson (eds) Geological Evolution of Antarctica. Cambridge University Press, Cambridge: 629–632.
DINGLE S.A., MARENSSI S.A. and LAVELLE M. 1998. High latitude Eocene climate deterioration: evidence from the northern Antarctic Peninsula. Journal of South American Earth Sciences 11: 571–579.
SEDOV R.V. 1997. Glaciers of the Chukotka. Materialy Glyatsiologicheskikh Issledovaniy 82: 213–217 (in Russian).
SOBOTA I. and GRZEŚ M. 2006. Characteristic of snow cover on Kaffioyra’s glaciers, NW Spitsbergen in 2005. Problemy Klimatologii Polarnej 16: 147–159 (in Polish).
WARD B.L. 1984. Distribution of modern benthic foraminifera of McMurdo Sound, Antarctica. M.Sc. Thesis. Victoria University, Wellington (unpublished).

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Please submit your manuscripts to Polish Polar Research using our online submission system.

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Polish Polar Research jest czasopismem wydawanym w wolnym dostępie na licencji CC BY-NC-ND 3.0. https://creativecommons.org/licenses/by-nc-nd/3.0/

Polish Polar Research is an open access journal with all content available with no charge in full text version. The journal content is available under the licencse CC BY-NC-ND 3.0 https://creativecommons.org/licenses/by-nc-nd/3.0/.

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