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  • 2010-2014  (19)
Document type
Keywords
Publisher
Language
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Year
  • 1
    Online Resource
    Online Resource
    Stress response of native and invasive populations of intertidal invertebrates from the North Atlantic : an intraspecific comparison (2011)
    Bremen
    Details Availability
    Keywords: Hochschulschrift
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (87 Blatt = 1 MB) , Illustrationen, Diagramme
    URL: https://oceanrep.geomar.de/12090/
    Language: Undetermined
    Note: Zusammenfassung in deutscher und englischer Sprache
    Location Call Number Limitation Availability
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    GEOMAR CATALOGUE
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  • 2
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    Abundance of pteropods in the ice-covered Weddell Sea, Antarctica from 6 February 1983 to 9 March 1983 (2013)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: Abundance per volume; ANT-I/2; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Event label; Latitude of event; Longitude of event; MULT; Multiple investigations; Polarstern; PS01; PS01/131; PS01/132; PS01/152; PS01/153; PS01/156; PS01/161; PS01/169; PS01/170; PS01/171; PS01/172; PS01/173; PS01/190; PS01/192; PS01/193; PS01/195; PS01/196; PS01/199; PS01/200; PS01/201; PS01/203; PS01/209; PS01/211; PS01/212; PS01/215; PS01/218; PS01/221; PS01/222; PS01/226; PS01/229; PS01/230; PS01/232; PS01/233; Taxon/taxa; Type; Uniform resource locator/link to reference; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 579 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    (Table 2) Carbon and nitrogen content and fatty acid composition of seston samples, Oxyrrhis marina, Rhodomonas baltica and Thalassiosira weissflogii cultures used during the experiment in 2008 (2011)
    PANGAEA
    Details
    Publication Date: 2023-08-23
    Keywords: 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-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-6,9,12,15-Octadecatetraenoic acid of total fatty acids; all-cis-7,10,13,16,19-Docosapentaenoic 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; Carbon, organic, total; Carbon, organic, total, standard deviation; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; cis-11-Icosenoic acid of total fatty acids; cis-11-Octadecenoic acid of total fatty acids (IUPAC: Octadec-11-enoic acid); cis-13-Octadecenoic 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-Octadecenoic acid of total fatty acids (IUPAC: Octadec-9-enoic acid); Fatty acids, standard deviation; Hexadecanoic acid of total fatty acids; Monounsaturated fatty acids of total fatty acids; Nitrogen, organic; Nitrogen, organic, standard deviation; Octadecanoic acid of total fatty acids; Octadecatetraenoic acid 18:4(n-4) of total fatty acids; Pentadecanoic acid of total fatty acids; Polyunsaturated fatty acids of total fatty acids; Sample type; Saturated fatty acids of total fatty acids; Tetradecanoic acid of total fatty acids
    Type: Dataset
    Format: text/tab-separated-values, 189 data points
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    DATA PANGAEA
  • 4
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    (Table 3) Dry mass, lipid, carbon and nitrogen content and fatty acid composition of Temora longicornis females from the field and during the experiment in 2008 (2011)
    PANGAEA
    Details
    Publication Date: 2023-08-23
    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; 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-6,9,12,15-Octadecatetraenoic acid of total fatty acids; all-cis-9,12,15-Octadecatrienoic acid of total fatty acids; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; Carbon content per individual; cis-11-Icosenoic acid of total fatty acids; cis-11-Octadecenoic acid of total fatty acids (IUPAC: Octadec-11-enoic acid); cis-15-Tetracosenoic acid of total fatty acids; cis-9-Hexadecenoic acid of total fatty acids (IUPAC: (9Z)-hexadec-9-enoic acid); cis-9-Octadecenoic acid of total fatty acids (IUPAC: Octadec-9-enoic acid); Dry mass, standard deviation; Dry mass per individual; Experiment day; Fatty acids, standard deviation; Hexadecanoic acid of total fatty acids; Lipids, standard deviation; Lipids per individual; Monounsaturated fatty acids of total fatty acids; Nitrogen content per individual; Octadecanoic acid of total fatty acids; Octadecatetraenoic acid 18:4(n-4) of total fatty acids; Polyunsaturated fatty acids of total fatty acids; Saturated fatty acids of total fatty acids; Sex; Species; Standard deviation; Tetradecanoic acid of total fatty acids; Treatment: food
    Type: Dataset
    Format: text/tab-separated-values, 225 data points
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    DATA PANGAEA
  • 5
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    Lipid, carbon and nitrogen content and fatty acid composition of Temora longicornis females and different food species during the experiment (2011)
    PANGAEA
    In:  Supplement to: Kreibich, Tobias; Saborowski, Reinhard; Hagen, Wilhelm; Niehoff, Barbara (2011): Influence of short-term nutritional variations on digestive enzyme and fatty acid patterns of the calanoid copepod Temora longicornis. Journal of Experimental Marine Biology and Ecology, 407(2), 182-189, https://doi.org/10.1016/j.jembe.2011.06.013
    Details
    Publication Date: 2023-10-28
    Description: Temora longicornis, a dominant calanoid copepod species in the North Sea, is characterised by low lipid reserves and high biomass turnover rates. To survive and reproduce successfully, this species needs continuous food supply and thus requires a highly flexible digestive system to exploit various food sources. Information on the capacity of digestive enzymes is scarce and therefore the aim of our study was to investigate the enzymatic capability to respond to quickly changing nutritional conditions. We conducted two feeding experiments with female T. longicornis from the southern North Sea off Helgoland. In the first experiment in 2005, we tested how digestive enzyme activities and enzyme patterns as revealed by substrate SDS-PAGE (sodium dodecylsulfate polyacrylamide gel electrophoresis) responded to changes in food composition. Females were incubated for three days fed ad libitum with either the heterotrophic dinoflagellate Oxyrrhis marina or the diatom Thalassiosira weissflogii. At the beginning and at the end of the experiment, copepods were deep-frozen for analyses. The lipolytic enzyme activity did not change over the course of the experiment but the enzyme patterns did, indicating a distinct diet-induced response. In a second experiment in 2008, we therefore focused on the enzyme patterns, testing how fast changes occur and whether feeding on the same algal species leads to similar patterns. In this experiment, we kept the females for 4 days at surplus food while changing the algal food species daily. At day 1, copepods were offered O. marina. On day 2, females received the cryptophycean Rhodomonas baltica followed by T. weissflogii on day 3. On day 4 copepods were again fed with O. marina. Each day, copepods were frozen for analysis by means of substrate SDS-PAGE. This showed that within 24 h new digestive enzymes appeared on the electrophoresis gels while others disappeared with the introduction of a new food species, and that the patterns were similar on day 1 and 4, when females were fed with O. marina. In addition, we monitored the fatty acid compositions of the copepods, and this indicated that specific algal fatty acids were quickly incorporated. With such short time lags between substrate availability and enzyme response, T. longicornis can successfully exploit short-term food sources and is thus well adapted to changes in food availability, as they often occur in its natural environment due seasonal variations in phyto- and microzooplankton distribution.
    Keywords: AWI; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SPP1158
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 6
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    Maximum ingestion and maximum clearance rate of Euphausia superba determined experimentally (2014)
    PANGAEA
    Details
    Publication Date: 2024-01-26
    Keywords: ANT-XVI/3; AWI_Paleo; Biomass as carbon per individual; BONGO; Bongo net; Clearance rate per individual; E_superba_FEEDEXP-4; Ingestion rate of carbon per individual; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS53; Taxon/taxa; Treatment: temperature; Uniform resource locator/link to reference; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 6 data points
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    DATA PANGAEA
  • 7
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    Mass specific and individual respiration rates of dominant copopod species sampled during Maria S. Merian cruise MSM17/3 in the northern Benguela Current System (2013)
    PANGAEA
    Details
    Publication Date: 2024-03-13
    Keywords: Benguela Upwelling; Copepoda, mass; DATE/TIME; Depth, bathymetric; Depth, bottom/max; Depth, top/min; DEPTH, water; Double MOCNESS 333; Duration; Event label; EXP; Experiment; GENUS; Geochemistry and ecology of the Namibian upwelling system; L-1a; L-3; Latitude of event; Longitude of event; Maria S. Merian; MOC-D-333; MOC-S-2000; MSM17/3; MSM17/3_222-6; MSM17/3_224-5; MSM17/3_226-9; MSM17/3_230-5; MSM17/3_233-3; MSM17/3_236-1; MSM17/3_240-2; MSM17/3_241-7; MSM17/3_242-8; MSM17/3_243-12; MSM17/3_250-7; MSM17/3_254-5; Number; Ontogenetic stage; Respiration rate, oxygen, per dry mass; Respiration rate, oxygen, per individual; Singel MOCNESS 2000; Species; T8-1; T8-1a; T8-1b; T8-1c; T8-3; T8-4; Temperature, technical; WLT-10; WLT-2; WLT-6
    Type: Dataset
    Format: text/tab-separated-values, 1496 data points
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    DATA PANGAEA
  • 8
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    Mass specific and individual ETS activities of dominant copopod species sampled during Maria S. Merian cruise MSM17/3 in the northern Benguela Current System (2013)
    PANGAEA
    Details
    Publication Date: 2024-03-13
    Keywords: Benguela Upwelling; Copepoda, mass; DATE/TIME; Depth, bathymetric; Depth, bottom/max; Depth, top/min; DEPTH, water; Double MOCNESS 333; Electron transport system activity of oxygen per individual; Electron transport system activity of oxygen per mass; Event label; EXP; Experiment; GENUS; Geochemistry and ecology of the Namibian upwelling system; L-1a; L-3; Latitude of event; Longitude of event; Maria S. Merian; MOC-D-333; MOC-S-2000; MSM17/3; MSM17/3_222-6; MSM17/3_224-5; MSM17/3_226-9; MSM17/3_233-3; MSM17/3_236-1; MSM17/3_240-2; MSM17/3_242-8; MSM17/3_243-12; MSM17/3_250-7; MSM17/3_254-5; Number; Ontogenetic stage; Singel MOCNESS 2000; Species; T8-1; T8-1b; T8-1c; T8-3; T8-4; Temperature, technical; WLT-10; WLT-2
    Type: Dataset
    Format: text/tab-separated-values, 700 data points
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    DATA PANGAEA
  • 9
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    Respiration rates and electron transport system activities of copepod species obtained during Maria S. Merian cruise MSM17/3 (2013)
    PANGAEA
    In:  Supplement to: Bode, Maya; Schukat, Anna; Hagen, Wilhelm; Auel, Holger (2013): Predicting metabolic rates of calanoid copepods. Journal of Experimental Marine Biology and Ecology, 444, 1-7, https://doi.org/10.1016/j.jembe.2013.03.003
    Details
    Publication Date: 2024-03-13
    Description: Respiration rates and electron transport system (ETS) activities were measured in dominant copepod species from the northern Benguela upwelling system in January-February 2011 to assess the accuracy of the ETS assay in predicting in vivo respiration rates. Individual respiration rates varied from 0.06 to 1.60 µL O2/h/ind, while ETS activities converted to oxygen consumption ranged from 0.14 to 4.46 µL O2/h/ind. ETS activities were significantly correlated with respiration rates (r**2 = 0.79, p = 0.0001). R:ETS ratios were lowest in slow-moving Eucalanidae (0.11) and highest in diapausing Calanoides carinatus copepodids CV (0.76) while fast-moving copepods showed intermediate R:ETS (0.23-0.37). 82% of the variance of respiration rates could be explained by differences in dry mass, temperature and the activity level of different copepod species. Three regression equations were derived to calculate respiration rates for diapausing, slow- and fast-moving copepods, respectively, based on parameters such as body mass and temperature. Thus, knowledge about the activity level and behavioral characteristics of copepod species can significantly increase the predictive accuracy of metabolic models, which will help to better understand and quantify the impact of copepods on nutrient and carbon fluxes in marine ecosystems.
    Keywords: GENUS; Geochemistry and ecology of the Namibian upwelling system
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 10
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    Respiration rates and abundances of dominant copepods of the northern Benguela Current System (2013)
    PANGAEA
    In:  MARUM - Center for Marine Environmental Sciences, University Bremen | Supplement to: Schukat, Anna; Teuber, Lena; Hagen, Wilhelm; Wasmund, Norbert; Auel, Holger (2013): Energetics and carbon budgets of dominant calanoid copepods in the northern Benguela upwelling system. Journal of Experimental Marine Biology and Ecology, 442, 1-9, https://doi.org/10.1016/j.jembe.2013.01.024
    Details
    Publication Date: 2024-03-13
    Description: Respiration rates of 16 calanoid copepod species from the northern Benguela upwelling system were measured on board RRS Discovery in September/October 2010 to determine their energy requirements and assess their significance in the carbon cycle. Individual respiration rates were standardised to a mean copepod body mass and a temperature regime typical of the northern Benguela Current. These adjusted respiration rates revealed two different activity levels (active and resting) in copepodids C5 of Calanoides carinatus and females of Rhincalanus nasutus, which reduced their metabolism during dormancy by 82% and 62%, respectively. An allometric function (Imax) and an energy budget approach were performed to calculate ingestion rates. Imax generally overestimated the ingestion rates derived from the energy budget approach by 〉75%. We suggest that the energy budget approach is the more reliable approximation with a total calanoid copepod (mainly females) consumption of 78 mg C m-2 d-1 in neritic regions and 21 mg C m-2 d-1 in oceanic regions. The two primarily herbivorous copepods C. carinatus (neritic) and Nannocalanus minor (oceanic) contributed 83% and 5%, respectively, to total consumption by calanoid copepods. Locally, C. carinatus can remove up to 90% of the diatom biomass daily. In contrast, the maximum daily removal of dinoflagellate biomass by N. minor was 9%. These estimates imply that C. carinatus is an important primary consumers in the neritic province of the northern Benguela system, while N. minor has little grazing impact on phytoplankton populations further offshore. Data on energy requirements and total consumption rates of dominant calanoid copepods of this study are essential for the development of realistic carbon budgets and food-web models for the northern Benguela upwelling system.
    Keywords: GENUS; Geochemistry and ecology of the Namibian upwelling system
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
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