cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.847236
title: (Table I-II) Station details and isopoda abundance of samples taken during POLARSTERN cruise ANT-XV/3 to the eastern Weddell Sea and King George Island

description: Abundance, diversity, and distribution of suprabenthic Isopoda caught from a water layer between 0.27 to 0.60 m above the seafloor were analysed. The samples were taken during the ANT XV/3 cruise on RV Polarstern by means of an epibenthic sledge along two transects in the southern Weddell Sea (Vestkapp and Halley Bay) and another one east of King George Island. At each of these three bathymetric transects, five to six stations were sampled between 200 and 2000 m. In total, 4258 specimens of isopods were sampled at 14 stations standardized to 1000 m2 hauls. 114 species were identified from 49 genera and 23 higher taxa (families and suborders) of Isopoda. Most of them belonged to the suborder Asellota. Dominant families are Munnopsididae (Eurycopinae, Ilyarachninae), Joeropsidae, Munnidae, Paramunnidae, Ischnomesidae and Desmosomatidae. No striking differences were found between areas (Vestkapp, Halley Bay, Kapp Norvegia, and Bransfield Strait). Overall isopod abundances were highest at the shallowest station; species richness was slightly higher above 1000 m depth.
description: Supplement to: Brandt, Angelika (2004): Abundance, diversity, and community patterns of Isopoda (Crustacea) in the Weddell Sea and in the Bransfield Strait, Southern Ocean. Antarctic Science, 16(1), 5-10
DOI: 10.1594/pangaea.847836
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XVIII/3, Cape Town - Cape Town, 2000-12-07 - 2001-01-13
DOI: 10.1594/pangaea.847837
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XVIII/4, Cape Town - Punta Arenas, 2001-01-13 - 2001-02-22
DOI: 10.1594/pangaea.847841
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XVII/1, Bremerhaven - Tromsø, 2001-06-19 - 2001-07-30
DOI: 10.1594/pangaea.847843
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XVIII/6, Punta Arenas - Bremerhaven, 2001-05-08 - 2001-06-06
DOI: 10.1594/pangaea.847844
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XIX/1, Bremerhaven - Cape Town, 2001-11-07 - 2001-11-30
DOI: 10.1594/pangaea.847845
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XIX/2, Cape Town - Punta Arenas, 2001-12-01 - 2002-01-21
DOI: 10.1594/pangaea.847849
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XIX/6, Punta Arenas - Bremerhaven, 2002-05-05 - 2002-05-30
DOI: 10.1594/pangaea.847850
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XVIII/1, Bremerhaven - Tromsø, 2002-06-25 - 2002-08-24
DOI: 10.1594/pangaea.847851
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XVIII/2, Tromsø - Bremerhaven, 2002-08-24 - 2002-10-15
DOI: 10.1594/pangaea.847852
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XX/1, Bremerhaven - Cape Town, 2002-10-26 - 2002-11-22
DOI: 10.1594/pangaea.847853
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XX/2, Cape Town - Cape Town, 2002-11-24 - 2003-01-23
DOI: 10.1594/pangaea.848171
title: Raw data of continuous VM-ADCP (vessel-mounted Acoustic Doppler Current Profiler) profile during POLARSTERN cruise PS89 (ANT-XXX/2)
DOI: 10.1594/pangaea.847646
title: (Table 2) Composition and concentration of total hydrolyzable neutral sugars in samples taken during POLARSTERN cruise ARK-XIII/3
DOI: 10.1594/pangaea.847854
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XX/3, Cape Town - Bremerhaven, 2003-01-23 - 2003-02-16
DOI: 10.1594/pangaea.847855
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XIX/1, Bremerhaven - Longyearbyen, 2003-02-28 - 2003-04-24
DOI: 10.1594/pangaea.847856
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XIX/2, Longyearbyen - Bremerhaven, 2003-04-24 - 2003-05-15
DOI: 10.1594/pangaea.847857
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XIX/3a, Bremerhaven - Tromsø, 2003-05-23 - 2003-06-26
DOI: 10.1594/pangaea.847284
title: (Supplementary Table 1) Expected number of species E(S100) of Isopoda in ANDEEP I-III stations

description: For information on isopoda abundance per 1000 m haul length see Brandt et al. 2007a datasets under further details.
DOI: 10.1594/pangaea.847860
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XIX/4b, Longyearbyen - Bremerhaven, 2003-09-21 - 2003-10-13
DOI: 10.1594/pangaea.847861
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXI/1, Bremerhaven - Cape Town, 2003-10-22 - 2003-11-15
DOI: 10.1594/pangaea.847862
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXI/2, Cape Town - Cape Town, 2003-11-17 - 2004-01-19
DOI: 10.1594/pangaea.847863
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXI/3, Cape Town - Cape Town, 2004-01-21 - 2004-03-26
DOI: 10.1594/pangaea.847864
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXI/4, Cape Town - Cape Town, 2004-03-26 - 2004-05-07
DOI: 10.1594/pangaea.847721
title: (Table 1) Representative major and trace element analyses of Bransfield Basin Lavas collected during SONNE cruise SO155
DOI: 10.1594/pangaea.847865
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXI/5, Cape Town - Bremerhaven, 2004-05-08 - 2004-06-02
DOI: 10.1594/pangaea.847722
title: (Table 2) Sr-Nd-Pb isotopic composition of Bransfield Basin Lavas collected during SONNE cruise SO155

description: Isotope ratios for Sr normalized to NBS 987 (87Sr/86Sr = 0.71025) and for Pb to NBS 981 (Todt et al., 1996, http://onlinelibrary.wiley.com/doi/10.1029/GM095p0429/summary). Errors are 2 sigma standard errors of the mean and refer to in-run statistics.
DOI: 10.1594/pangaea.847739
title: (Table 2) Rate of reduction in cell size (apical length) and growth rate for seven Fragilariopsis kerguelensis strains sampled during POLARSTERN cruise ANT-XXI/3

description: The planktonic diatom Fragilariopsis kerguelensis plays an important role in the biogeochemical cycles of the Southern Ocean, where remains of its frustules form the largest deposit of biogenic silica anywhere in the world. We assessed the genetic identity of 26 strains, from cells collected at various sites in the Southern Ocean, using three molecular markers, LSU and ITS rDNA and rbcL. The LSU sequences were identical among the tested strains, ITS sequences were highly similar, and only one base pair difference was detected among the rbcL sequences. These results, together with a large number of successful mating experiments demonstrated that the strains belong to a single biological species. We investigated the mating system and life cycle traits of F. kerguelensis. Cell size diminished gradually in clonal strains. Gamete formation only occurred when strains of opposite mating type - within a cell size range of 7-36 µm - were mixed together. Two binucleate gametes were formed in each gametangium and gamete conjugation produced a zygote that had four nuclei and was surrounded by thin siliceous scales. Two out of the four nuclei subsequently degenerated and the zygote expanded to form an auxospore surrounded by a transverse and a longitudinal perizonium. Staining with the fluorochrome PDMPO provided for the first time a clear demonstration that the longitudinal perizonium is formed after auxospore expansion is complete. Initial cells produced within the mature auxospores were 78-101 µm in length. Various authors have shown that the average valve size of F. kerguelensis varies in sediment samples collected in regions and seasons with different primary production regimes and this parameter has thus been proposed as a biological proxy for palaeo-productivity. A better understanding of the life cycle of F. kerguelensis should help the design of future investigations aimed at testing the link between cell size distribution in the natural environment and the role that environmental factors might have in the regulation of population cell size.
description: The cell size is the average cell size on day 0 and the growth rate is the average of three measurements.
description: Supplement to: Fuchs, Nike; Scalco, Eleonora; Kooistra, W H C F; Assmy, Philipp; Montresor, Marina (2013): Genetic characterization and life cycle of the diatom Fragilariopsis kerguelensis. European Journal of Phycology, 48(4), 411-426
DOI: 10.1594/pangaea.847866
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XX/1, Bremerhaven - Longyearbyen, 2004-06-16 - 2004-07-16
DOI: 10.1594/pangaea.849244
title: (Table 6) Number of specimens of Polymastiidae and Suberitidae spp. found in ANDEEP I and II stations, POLARSTERN cruises ANT-XIX/4 and ANT-XXII/3

description: The Antarctic deep-water fauna of Polymastiidae and Suberitidae is revised using recently collected material from the Weddell Sea. The former family appeared to be more abundant and diverse than the latter family in the studied area. Seven species within five polymastiid genera and three species within three suberitid genera are described. Relatively high sponge abundance at two stations deeper than 4700 m was mainly constituted by a polymastiid species Radiella ant- arctica sp. nov. Previously, representatives of Radiella have never been found in the Antarctic. An eurybathic species, Polymastia invaginata , well known from the Antarctic and subantarctic, appeared to be especially abundant at less than 1000 m depth. Another eurybathic polymastiid species, Tentorium cf. semisuberites , known for its bipolar distribution, was the third abundant species at the depths between 1000–2600 m, with the highest density found at the deeper stations. Tentorium papillatum , endemic of the Southern Hemisphere, was registered only at a depth of about 1000 m. Other spe- cies studied were less abundant. Astrotylus astrotylus , the representative of the endemic Antarctic genus, was found exclusively deeper than 4500 m, often together with R. antarctica . Acanthopolymastia acanthoxa , the endemic deep- water Antarctic species, was registered at 3000 m. The discovery of suberitid Aaptos robustus sp. nov. at about 2300 m is the first signalization of Aaptos in the Antarctic and at such a considerable depth. The finding of Suberites topsenti deeper than 4700 m is also remarkable. In general the results achieved confirm the high degree of geographical ende- mism of the Antarctic deep-water sponge fauna and the eurybathic distribution of many Antarctic sponge species.
description: Supplement to: Plotkin, Alexander S; Janussen, Dorte (2008): Polymastiidae and Suberitidae (Porifera: Demospongiae: Hadromerida) of the deep Weddell Sea, Antarctic. Zootaxa, 1866, 95-135
DOI: 10.15468/dl.dpp2g8
title: Occurrence Download

description: A dataset containing 3 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is China",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Thuja sutchuenensis Franch."
 ]
}

 The dataset includes 3 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0094278-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.847868
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XX/3, Tromsø - Bremerhaven, 2004-08-30 - 2004-10-03
DOI: 10.1594/pangaea.847869
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXII/1, Bremerhaven - Cape Town, 2004-10-12 - 2004-11-04
DOI: 10.1594/pangaea.847870
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXII/2, Cape Town - Cape Town, 2004-11-05 - 2005-01-19
DOI: 10.1594/pangaea.847871
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXII/3, Cape Town - Punta Arenas, 2005-01-20 - 2005-04-07
DOI: 10.1594/pangaea.847872
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXII/4, Punta Arenas - Bahia Blanca, 2005-04-08 - 2005-05-22
DOI: 10.1594/pangaea.847873
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXII/5, Bahia Blanca - Bremerhaven, 2005-05-24 - 2005-06-22
DOI: 10.1594/pangaea.847874
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XXI/1a, Bremerhaven - Longyearbyen, 2005-07-21 - 2005-08-13
DOI: 10.1594/pangaea.847875
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XXI/1b, Longyearbyen - Bremerhaven, 2005-08-13 - 2005-09-18
DOI: 10.1594/pangaea.847876
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIII/1, Bremerhaven - Cape Town, 2005-10-13 - 2005-11-18
DOI: 10.1594/pangaea.847877
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIII/10, Cape Town - Bremerhaven, 2007-04-12 - 2007-05-04
DOI: 10.1594/pangaea.847878
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIII/2, Cape Town - Punta Arenas, 2005-11-18 - 2006-01-13
DOI: 10.1594/pangaea.847881
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIII/5, Punta Arenas - Cape Town, 2006-04-13 - 2006-06-12
DOI: 10.1594/pangaea.847882
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIII/6, Cape Town - Cape Town, 2006-06-17 - 2006-08-21
DOI: 10.1594/pangaea.847883
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIII/7, Cape Town - Cape Town, 2006-08-24 - 2006-10-29
DOI: 10.1594/pangaea.847884
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIII/8, Cape Town - Punta Arenas, 2006-11-23 - 2007-01-30
DOI: 10.1594/pangaea.847885
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIII/9, Punta Arenas - Cape Town, 2007-02-02 - 2007-04-11
DOI: 10.1594/pangaea.847925
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XXII/1a, Bremerhaven - Tromsø, 2007-05-25 - 2007-06-21
DOI: 10.1594/pangaea.847928
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XXII/2, Tromsø - Bremerhaven, 2007-07-28 - 2007-10-07
DOI: 10.1594/pangaea.847929
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIV/1, Bremerhaven - Cape Town, 2007-10-26 - 2007-11-26
DOI: 10.1594/pangaea.847930
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIV/3, Cape Town - Punta Arenas, 2008-02-06 - 2008-04-16
DOI: 10.1594/pangaea.847931
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIV/4, Punta Arenas - Bremerhaven, 2008-04-18 - 2008-05-20
DOI: 10.1594/pangaea.847932
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XXIII/1, Bremerhaven - Longyearbyen, 2008-06-12 - 2008-07-02
DOI: 10.1594/pangaea.847934
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXV/1, Bremerhaven - Cape Town, 2008-10-31 - 2008-12-03
DOI: 10.1594/pangaea.847935
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXV/2, Cape Town - Cape Town, 2008-12-05 - 2009-01-05
DOI: 10.1594/pangaea.847936
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXV/3, Cape Town - Punta Arenas, 2009-01-07 - 2009-03-17
DOI: 10.1594/pangaea.847938
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXV/5, Punta Arenas - Bremerhaven, 2009-04-11 - 2009-05-24
DOI: 10.1594/pangaea.847939
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XXIV/1, Bremerhaven - Longyearbyen, 2009-06-20 - 2009-07-10
DOI: 10.1594/pangaea.847942
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXVI/1, Bremerhaven - Punta Arenas, 2009-10-16 - 2009-11-25
DOI: 10.1594/pangaea.847945
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXVI/4, Punta Arenas - Bremerhaven, 2010-04-07 - 2010-05-17
DOI: 10.1594/pangaea.847946
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XXV/1, Bremerhaven - Longyearbyen, 2010-06-10 - 2010-06-30
DOI: 10.1594/pangaea.847948
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XXV/3, Reykjavik - Bremerhaven, 2010-08-01 - 2010-10-09
DOI: 10.1594/pangaea.847949
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXVII/1, Bremerhaven - Cape Town, 2010-10-25 - 2010-11-26
DOI: 10.1594/pangaea.847950
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXVII/2, Cape Town - Punta Arenas, 2010-11-28 - 2011-02-05
DOI: 10.1594/pangaea.847951
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXVII/3, Punta Arenas - Cape Town, 2011-02-08 - 2011-04-18
DOI: 10.1594/pangaea.847952
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXVII/4, Cape Town - Bremerhaven, 2011-04-20 - 2011-05-20
DOI: 10.1594/pangaea.847953
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XXVI/1, Bremerhaven - Longyearbyen, 2011-06-15 - 2011-07-13
DOI: 10.1594/pangaea.847954
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ARK-XXVI/3, Tromsø - Bremerhaven, 2011-08-05 - 2011-10-06
DOI: 10.1594/pangaea.847955
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXVIII/1, Bremerhaven - Cape Town, 2011-10-28 - 2011-11-30
DOI: 10.1594/pangaea.847956
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXVIII/2, Cape Town - Cape Town, 2011-12-03 - 2012-01-05
DOI: 10.1594/pangaea.847957
title: Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXVIII/3, Cape Town - Punta Arenas, 2012-01-07 - 2012-03-11
DOI: 10.1594/pangaea.848017
title: Physical oceanography during METEOR cruise M93

description: Data from this cruise has been calibrated together with the data from the previous cruise M92 which used the same CTD sensors. Oxygen has been calibrated by combining conventional Winkler titrations from M92 and M93 and data from a Unisense Stox sensor that is capable of measuring very low oxygen values.. Oxygen values below 0 come either from very strong vertical gradient which results in an overshoot by a filter of the manufacturer, or are within the noise level of the instrument of about 1 mumol/kg. Such values hould be regarded as very very close to 0. Conductivity/Salinity measurements near the surface frequently suffered from biological matter. Use near surface values with caution.Sound speed and pinger depth correction unkown. Use with care.Fluorescence and Turbidity data still contain deck offsets. Use with caution
DOI: 10.1594/pangaea.848469
title: (Table 1) Salinity and dissolved organic carbon concentration of marine water (ANT-XIX/2) and mangrove porewater (Brazil)

description: The chemical structure of refractory marine dissolved organic matter (DOM) is still largely unknown. Electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR-MS) was used to resolve the complex mixtures of DOM and provide valuable information on elemental compositions on a molecular scale. We characterized and compared DOM from two sharply contrasting aquatic environments, algal-derived DOM from the Weddell Sea (Antarctica) and terrigenous DOM from pore water of a tropical mangrove area in northern Brazil. Several thousand molecular formulas in the mass range of 300-600 Da were identified and reproduced in element ratio plots. On the basis of molecular elemental composition and double-bond equivalents (DBE) we calculated an average composition for marine DOM. O/C ratios in the marine samples were lower (0.36 ± 0.01) than in the mangrove pore-water sample (0.42). A small proportion of chemical formulas with higher molecular mass in the marine samples were characterized by very low O/C and H/C ratios probably reflecting amphiphilic properties. The average number of unsaturations in the marine samples was surprisingly high (DBE = 9.9; mangrove pore water: DBE = 9.4) most likely due to a significant contribution of carbonyl carbon. There was no significant difference in elemental composition between surface and deep-water DOM in the Weddell Sea. Although there were some molecules with unique marine elemental composition, there was a conspicuous degree of similarity between the terrigenous and algal-derived end members. Approximately one third of the molecular formulas were present in all marine as well as in the mangrove samples. We infer that different forms of microbial degradation ultimately lead to similar structural features that are intrinsically refractory, independent of the source of the organic matter and the environmental conditions where degradation took place.
description: Supplement to: Koch, Boris P; Witt, Matthias; Engbrodt, Ralph; Dittmar, Thorsten; Kattner, Gerhard (2005): Molecular formulae of marine and terrigenous dissolved organic matter detected by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry. Geochimica et Cosmochimica Acta, 69(13), 3299-3308
DOI: 10.1594/pangaea.848471
title: Heavy minerals of sediment cores PS69/849-1 and PS69/849-2
DOI: 10.1594/pangaea.848473
title: Total organic carbon and opal content of sediment core PS69/849-2
DOI: 10.1594/pangaea.848474
title: Clay minerals of sediment core PS69/849-2
DOI: 10.1594/pangaea.848475
title: Ice rafted debris of sediment core PS69/849-2
DOI: 10.1594/pangaea.848476
title: Grain size distribution of sediment core PS69/849-2
DOI: 10.1594/pangaea.848477
title: Relative diatom abundance of sediment core PS69/849-2