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  • PANGAEA  (8)
  • ELSEVIER SCIENCE BV  (1)
  • Springer
  • 2015-2019  (9)
  • 2015  (9)
Document type
Keywords
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  • PANGAEA  (8)
  • ELSEVIER SCIENCE BV  (1)
  • Springer
  • SPRINGER  (1)
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  • 2015-2019  (9)
Year
  • 1
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    Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign, with link to shapefiles of filtered and unfiltered seal locations for ArcGIS visualisation (2015)
    PANGAEA
    Details
    Publication Date: 2023-04-21
    Keywords: DrescherInlet; Marine Mammal Tracking; MMT
    Type: Dataset
    Format: application/zip, 277.8 kBytes
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign, with link to files of gridded seal locations and environmental parameters for Maxent analyses (2015)
    PANGAEA
    Details
    Publication Date: 2023-04-21
    Keywords: DrescherInlet; Marine Mammal Tracking; MMT
    Type: Dataset
    Format: application/zip, 8.3 MBytes
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Stable isotope composition of calanoid copepods in the open eastern Atlantic Ocean during POLARSTERN cruise ANT-XXIX/1 (2015)
    PANGAEA
    Details
    Publication Date: 2024-03-09
    Keywords: ANT-XXIX/1; Canarias Sea; Carbon, total; Carbon/Nitrogen ratio; Date/Time of event; Depth, bottom/max; Depth, top/min; Dry mass per individual; Elevation of event; Event label; Latitude of event; Lipid corrected d13C/12C for crustaceans; Longitude of event; MSN; Multiple opening/closing net; Nitrogen, total; Number of individuals; Polarstern; PS81; PS81/001-3; PS81/002-3; PS81/004-4; PS81/005-6; PS81/007-2; PS81/008-6; PS81/009-4; PS81/010-3; PS81/011-4; PS81/012-4; PS81/013-6; PS81/014-4; PS81/015-2; PS81/016-4; PS81/017-7; South Atlantic Ocean; Species; Stage; Station label; δ13C/12C ratio; δ15N/14N ratio
    Type: Dataset
    Format: text/tab-separated-values, 4432 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Fatty acid and stable isotope composition of calanoid copepods in the open eastern Atlantic Ocean during POLARSTERN cruise ANT-XXIX/1 (2015)
    PANGAEA
    In:  Supplement to: Bode, Maya; Hagen, Wilhelm; Schukat, Anna; Teuber, Lena; Fonseca-Batista, Debany; Dehairs, Frank; Auel, Holger (2015): Feeding strategies of tropical and subtropical calanoid copepods throughout the eastern Atlantic Ocean – Latitudinal and bathymetric aspects. Progress in Oceanography, 138, 268-282, https://doi.org/10.1016/j.pocean.2015.10.002
    Details
    Publication Date: 2024-03-09
    Description: The majority of global ocean production and total export production is attributed to oligotrophic oceanic regions due to their vast regional expanse. However, energy transfers, food-web structures and trophic relationships in these areas remain largely unknown. Regional and vertical inter- and intra-specific differences in trophic interactions and dietary preferences of calanoid copepods were investigated in four different regions in the open eastern Atlantic Ocean (38°N to 21°S) in October/November 2012 using a combination of fatty acid (FA) and stable isotope (SI) analyses. Mean carnivory indices (CI) based on FA trophic markers generally agreed with trophic positions (TP) derived from d15N analysis. Most copepods were classified as omnivorous (CI ~0.5, TP 1.8 to ~2.5) or carnivorous (CI 〉=0.7, TP 〉=2.9). Herbivorous copepods showed typical CIs of 〈=0.3. Geographical differences in d15N values of epi- (200-0 m) to mesopelagic (1000-200 m) copepods reflected corresponding spatial differences in baseline d15N of particulate organic matter from the upper 100 m. In contrast, species restricted to lower meso- and bathypelagic (2000-1000 m) layers did not show this regional trend. FA compositions were species-specific without distinct intra-specific vertical or spatial variations. Differences were only observed in the southernmost region influenced by the highly productive Benguela Current. Apparently, food availability and dietary composition were widely homogeneous throughout the oligotrophic oceanic regions of the tropical and subtropical Atlantic. Four major species clusters were identified by principal component analysis based on FA compositions. Vertically migrating species clustered with epi- to mesopelagic, non-migrating species, of which only Neocalanus gracilis was moderately enriched in lipids with 16% of dry mass (DM) and stored wax esters (WE) with 37% of total lipid (TL). All other species of this cluster had low lipid contents (〈 10% DM) without WE. Of these, the tropical epipelagic Undinula vulgaris showed highest portions of bacterial markers. Rhincalanus cornutus, R. nasutus and Calanoides carinatus formed three separate clusters with species-specific lipid profiles, high lipid contents (〉=41% DM), mainly accumulated as WE (〉=79% TL). C. carinatus and R. nasutus were primarily herbivorous with almost no bacterial input. Despite deviating feeding strategies, R. nasutus clustered with deep-dwelling, carnivorous species, which had high amounts of lipids (〉=37% DM) and WE (〉=54% TL). Tropical and subtropical calanoid copepods exhibited a wide variety of life strategies, characterized by specialized feeding. This allows them, together with vertical habitat partitioning, to maintain high abundance and diversity in tropical oligotrophic open oceans, where they play an essential role in the energy flux and carbon cycling.
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 5
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    Abundance, Electron transport System (ETS) activity and respiration rates of pelagic decapods from the Benguela upwelling system during AFR258, D356 and MSM17/3 (2015)
    PANGAEA
    In:  Supplement to: Schukat, Anna; Bode, Maya; Auel, Holger; Carballo, Rodrigo; Martin, Bettina; Koppelmann, Rolf; Hagen, Wilhelm (2013): Pelagic decapods in the northern Benguela upwelling system: Distribution, ecophysiology and contribution to active carbon flux. Deep Sea Research Part I: Oceanographic Research Papers, 75, 146-156, https://doi.org/10.1016/j.dsr.2013.02.003
    Details
    Publication Date: 2024-03-13
    Description: Decapods were sampled with a 1 m**2 MOCNESS (mainly upper 1000 m) in the northern Benguela Current during three cruises in December 2009, September/October 2010 and February 2011. Although pelagic decapods are abundant members of the micronekton community, information about their ecophysiology is very limited. Species-specific regional distribution limits were detected for various decapod species (e.g. Plesionika carinata, Sergestes arcticus, Pasiphaea semispinosa). Significant diel vertical migration patterns were determined for three caridean and three penaeiodean species. Biomass was variable and ranged from 23 to 2770 mg dry mass m**-2 with highest values for P. semispinosa. Fatty acid and stable isotope analyses revealed that the examined decapod species are omnivorous tocarnivorous except for the herbivorous to omnivorous species P. carinata. Calanid copepods such as Calanoides carinatus were identified as an important prey item especially for caridean species. Community consumption rates of pelagic decapods derived from respiration rates ranged from 7 mg C m**-2 d**-1 (231S) to 420 mg C m**-2 d**-1 (191S, 171S). A potential active respiratory carbon flux was calculated for migrating pelagic decapods with 4.4 mg C m**- d**-1 for the upper 200 m and with 2.6 mg C m**-2 d**-1 from the base of the euphotic zone to a depth of 600 m. Overall, pelagic decapods apparently play a more prominent role in the northern Benguela Current ecosystem than previously assumed and may exert a substantial predation impact on calanid copepods (up to 13% d**-1 of standing stock).
    Keywords: GENUS; Geochemistry and ecology of the Namibian upwelling system
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 6
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    Electron transport system (ETS) activity and respiration rates of pelagic decapods from the Benguela upwelling system during D356 and MSM17/3 (2015)
    PANGAEA
    Details
    Publication Date: 2024-03-13
    Keywords: Benguela Upwelling; D356; D356-11_5; D356-15_2; D356-21_2_1; D356-23_2; D356-32_5; D356-8_1; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Discovery (1962); Double MOCNESS 333; Dry mass per individual; Duration; Electron transport system activity of oyxgen; Electron transport system activity of oyxgen per individual; Event label; GENUS; Geochemistry and ecology of the Namibian upwelling system; Latitude of event; Life stage; Longitude of event; Maria S. Merian; MOC-D-333; MOC-S-2000; MSM17/3; MSM17/3_246-8; MSM17/3_292-9; MSM17/3_298-12; MSM17/3_301-2; MSM17/3_310-3; MSM17/3_315-5; Respiration rate, oxygen; Respiration rate, oxygen, per individual; Ring trawl; RTR; Sample ID; Singel MOCNESS 2000; Species; T1-1; T1-3a; T5-1a; T5-2; T8-1d; Temperature, technical; Wet mass per individual; WKT-2b
    Type: Dataset
    Format: text/tab-separated-values, 637 data points
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    DATA PANGAEA
  • 7
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    Abundance of pelagic decapods in the northern Benguela upwelling system during AFR258, D356 and MSM17/3 (2015)
    PANGAEA
    Details
    Publication Date: 2024-03-13
    Keywords: Abundance per area; Abundance per volume; AFR258; AFR258_30254_7; AFR258_30257_7; AFR258_30259_6; AFR258_30260_7; AFR258_30261_6; AFR258_30263_6; Africana (1982); Benguela Upwelling; D356; D356-15_3; D356-16_3; D356-23_2; D356-25_1; D356-28_6; D356-8_1; D356-8_2_6_2; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Discovery (1962); Double MOCNESS 333; Event label; GENUS; Geochemistry and ecology of the Namibian upwelling system; Latitude of event; Life stage; Longitude of event; Maria S. Merian; MOC-D-333; MOC-S-2000; MSM17/3; MSM17/3_241-13; MSM17/3_242-13; MSM17/3_242-9; MSM17/3_243-1; MSM17/3_243-12; MSM17/3_250-7; MSM17/3_292-9; MSM17/3_295-12; MSM17/3_295-6; MSM17/3_298-12; MSM17/3_298-8; MSM17/3_306-13; MSM17/3_307-11; MSM17/3_307-2; MSM17/3_309-11; MSM17/3_309-2; MSM17/3_310-3; MSM17/3_310-7; PHY-NET; Phytoplankton net, Apstein-type; Singel MOCNESS 2000; Species; T1-1; T1-2; T-1-2_6; T1-3a; T1-4a; T-2-2_7; T5-1; T-5-1_7; T5-1a; T-5-1a_7; T5-2; T8-1; T8-1a; T-8-1a_6; T8-1b; T8-1c; T-8-3_6
    Type: Dataset
    Format: text/tab-separated-values, 1626 data points
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    DATA PANGAEA
  • 8
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    Fatty acid composition of calanoid copepods in the open eastern Atlantic Ocean during POLARSTERN cruise ANT-XXIX/1 (2015)
    PANGAEA
    Details
    Publication Date: 2024-04-24
    Keywords: 6,9,12,15-Hexadecatetraenoic acid of total fatty acids; 6,9,12-Hexadecatrienoic acid of total fatty acids; 9,12-Hexadecadienoic acid of total fatty acids; 9-Tetradecenoic acid of total fatty acids; all-cis-11,14,17-Eicosatrienoic acid of total fatty acids; all-cis-11,14-Eicosadienoic acid of total fatty acids; all-cis-11,14-Octadecadienoic acid of total fatty acids; all-cis-13,16-Docosadienoic acid of total fatty acids; all-cis-4,7,10,13,16,19-Docosahexaenoic acid of total fatty acids; all-cis-5,8,11,14,17-Eicosapentaenoic acid of total fatty acids; all-cis-5,8,11,14-Eicosatetraenoic acid of total fatty acids; all-cis-6,9,12,15-Octadecatetraenoic acid of total fatty acids; all-cis-6,9,12-Octadecatrienoic acid of total fatty acids; all-cis-7,10,13,16,19-Docosapentaenoic acid of total fatty acids; all-cis-8,11,14,17-Eicosatetraenoic acid of total fatty acids; all-cis-8,11,14-Eicosatrienoic acid of total fatty acids; all-cis-8,11,14-Octadecatrienoic acid of total fatty acids; all-cis-9,12,15-Octadecatrienoic acid of total fatty acids; all-cis-9,12-Octadecadienoic acid of total fatty acids; ANT-XXIX/1; Canarias Sea; cis-11-Docosenoic acid of total fatty acids; cis-11-Hexadecenoic acid of total fatty acids (IUPAC: (11Z)-hexadec-11-enoic acid); cis-11-Icosenoic acid of total fatty acids; cis-11-Octadecenoic acid of total fatty acids (IUPAC: Octadec-11-enoic acid); cis-13-Docosenoic acid of total fatty acids; cis-13-Icosenoic acid of total fatty acids; cis-13-Octadecenoic acid of total fatty acids; cis-15-Docosenoic acid of total fatty acids; cis-15-Tetracosenoic acid of total fatty acids; cis-7-Hexadecenoic acid of total fatty acids; cis-9-Hexadecenoic acid of total fatty acids (IUPAC: (9Z)-hexadec-9-enoic acid); cis-9-Hexadecenol of total fatty alcohols; cis-9-Icosanoic acid of total fatty acids; cis-9-Octadecenoic acid of total fatty acids (IUPAC: Octadec-9-enoic acid); Date/Time of event; Depth, bottom/max; Depth, top/min; Docosanoic acid of total fatty acids; Docosatetraenoic acid 22:4(n-3) of total fatty acids; Dry mass; Elevation of event; Event label; Fatty alcohols; Heptadecanoic acid of total fatty acids; Hexadecanoic acid of total fatty acids; Hexadecanol of total fatty alcohols; Icosanoic acid of total fatty acids; iso-Heptadecanoic acid of total fatty acids (IUPAC: 15-methylhexadecanoic acid); iso-Pentadecanoic acid of total fatty acids (IUPAC: 13-methyltetradecanoic acid); Latitude of event; Lipids; Longitude of event; MSN; Multiple opening/closing net; Number of individuals; Octadecanoic acid of total fatty acids; Octadecanol of total fatty alcohols; Octadecenol of total fatty alcohols; Pentadecanoic acid of total fatty acids; Phytanic acid of total fatty acids; Polarstern; PS81; PS81/005-6; PS81/007-2; PS81/008-6; PS81/009-4; PS81/010-3; PS81/011-4; PS81/012-4; PS81/013-6; PS81/014-4; PS81/015-2; PS81/016-4; PS81/017-7; Sample ID; South Atlantic Ocean; Species; Stage; Station label; Tetracosenoic acid 24:1(n-11) of total fatty acids; Tetradecanoic acid of total fatty acids; Tetradecanol of total alcohols; Wax esters
    Type: Dataset
    Format: text/tab-separated-values, 10265 data points
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    DATA PANGAEA
  • 9
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    Feeding history can influence physiological responses of copepods - an experimental study comparing different cohorts of Temora longicornis from the Southern North Sea (2015)
    ELSEVIER SCIENCE BV
    In:  EPIC3Journal of Experimental Marine Biology and Ecology, ELSEVIER SCIENCE BV, 469, pp. 143-149, ISSN: 0022-0981
    Details
    Publication Date: 2015-06-09
    Description: Calanoid copepods in boreal and polar habitats are confronted with a strong variability in food supply. The abundant species in the Southern North Sea, Temora longicornis, cannot accumulate extensive energy stores to buffer longer periods of food paucity. These copepods react immediately to dietary changes and therefore, recent trophic conditions must strongly influence their metabolic and functional responses. To elucidate the implications of feeding history, we collected two cohorts of T. longicornis females, which were characterized by different feeding histories and consequently different physiological backgrounds. In the North Sea in April 2005, females fed at a higher trophic level than in May, were poor in lipids, showed low proteinase activity and produced 41 eggs female-1 d-1. In May, females were significantly smaller than in April, contained more lipids, had a higher proteinase activity and produced 26 eggs female-1 d-1. In the laboratory, females from each group were fed with either autotrophic diatoms or heterotrophic dinoflagellates for three days. Irrespective of different initial conditions, all T. longicornis females incorporated diet-specific fatty acids within 24 h. Also in both experiments and each dietary treatment, egg production increased after 24 h indicating that females were food-limited in situ in April and in May. Responses differed, however, with regard to lipid accumulation and enzyme activities . Total lipid contents increased significantly in females during experiment I (April) but not during experiment II (May), despite higher algal lipid levels during experiment II. Proteolytic activity increased during experiment I, but decreased during experiment II. These deviating responses of T. longicornis females to food conditions suggest that detailed knowledge about the initial physiological state of specimens is required, when investigating adaptive mechanisms and metabolic performances of copepods by means of experiments.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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    PAPER (OA)
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