GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 2010-2014  (26)
Document type
Keywords
Publisher
Language
Years
Year
  • 1
    Online Resource
    Online Resource
    The expedition of the research vessel "Polarstern" to the Antarctic in 2012 (ANT-XXIX/1) (2013)
    Bremerhaven : Alfred-Wegener-Inst., Helmholtz-Zentrum für Polar- und Meeresforschung
    Details Availability
    Type of Medium: Online Resource
    Pages: Online-Ressource (67 S.) , Ill., graph. Darst., Kt.
    Series Statement: Berichte zur Polar- und Meeresforschung 670
    URL: http://hdl.handle.net/10013/epic.42556.d001
    Language: English
    Note: Zsfassung in dt. und engl. Sprache
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 2
    facet.materialart.
    Unknown
    Respiration rates of tropical Atlantic copepods in relation to the oxygen minimum zone (2013)
    Elsevier
    In:  Journal of Experimental Marine Biology and Ecology, 448 . pp. 28-36.
    Details
    Publication Date: 2019-09-23
    Description: Highlights: • Optode respirometry is an effective new method for copepod respiration measurements. • Respiration rates and Q10 values were established for tropical Atlantic key species. • Respiration was influenced by body mass, temperature and species-specific behavior. • Depth of occurrence did not have a significant effect on standardized respiration. • The oxygen minimum zone did not yet fundamentally impact copepod ecophysiology Abstract Zooplankton respiration plays an important role in the carbon cycling of pelagic ecosystems. The rate of oxygen consumption in zooplankton is affected by the physical environment, vertical distribution range and species-specific behavior. Especially in tropical oceans, oxygen minimum zones (OMZs) may influence zooplankton metabolic processes and vertical distribution and thus structure zooplankton communities. Here we present respiration rates of tropical Atlantic copepods in relation to environmental factors, especially O2 concentration, and species-specific characteristics. Copepods were sampled during two research stays on the Cape Verde Island São Vicente in March/April and May/June 2010. Minimum O2 concentrations of 51 μmol kg− 1 (pO2 of 4.25 kPa) at 400 m depth were recorded within the OMZ. Respiration rates of epi- and mesopelagic calanoid copepods were measured by optode respirometry at three different ambient temperatures (13, 18, and 23 °C) to establish the effect of temperature on metabolic rates. Mass-specific oxygen consumption ranged from 27 μmol O2 gDM− 1 h− 1 in copepodids C5 of Lophothrix sp. at 13 °C to 774 μmol O2 gDM− 1 h− 1 in Pleuromamma xiphias copepodids C5 at 18 °C and was mainly controlled by body mass and temperature. Mass-specific respiration rates were highest in surface-dwelling organisms and decreased with increasing depth. To allow for a comparison of shallow and deep-living copepods, respiration rates were standardized to a common temperature of 18 °C and a mean body dry mass of 0.5 mg, applying a Q10 of 2.0 and a body mass exponent of − 0.56. Temperature- and body mass-corrected respiration rates did not decrease with increasing depth indicating that neither depth of occurrence, nor current hypoxic conditions within the OMZ had a fundamental, persistent effect on zooplankton respiration.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.jembe.2013.06.012
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
    facet.materialart.
    Unknown
    Station list and links to master tracks in different resolutions of POLARSTERN cruise ANT-XXIX/1, Bremerhaven - Cape Town, 2012-10-27 - 2012-11-27 (2014)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Keywords: ANT-XXIX/1; Atlantic, transit cruise; Calculated; Course; CT; DATE/TIME; LATITUDE; LONGITUDE; Polarstern; PS81; PS81/1-track; Speed; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 8988 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 4
    facet.materialart.
    Unknown
    Raw data of continuous VM-ADCP (vessel-mounted Acoustic Doppler Current Profiler) profile during POLARSTERN cruise ANT-XXIX/1 (2014)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Keywords: Acoustic Doppler Current Profiling (ADCP), TRDI Ocean Surveyor, 153.6 kHz; ANT-XXIX/1; Atlantic, transit cruise; AWI_PhyOce; CT; File content; File name; File size; Physical Oceanography @ AWI; Polarstern; PS81; PS81/1-track; Underway cruise track measurements; Uniform resource locator/link to raw data file
    Type: Dataset
    Format: text/tab-separated-values, 36 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 5
    facet.materialart.
    Unknown
    Continuous thermosalinograph oceanography along POLARSTERN cruise track ANT-XXIX/1 (2013)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Keywords: ANT-XXIX/1; Atlantic, transit cruise; AWI_PhyOce; CT; DATE/TIME; DEPTH, water; LATITUDE; LONGITUDE; Physical Oceanography @ AWI; Polarstern; PS81; PS81/1-track; Salinity; Temperature, water; Thermosalinograph; TSG; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 7826 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 6
    facet.materialart.
    Unknown
    Enzyme activities of digestive and metabolic enzymes of Calanus finmarchicus from Maria S. Merian cruise MSM26 in spring 2013 (2014)
    PANGAEA
    Details
    Publication Date: 2023-03-07
    Description: The present study aimed to contribute to the knowledge on the intraspecific variations of enzyme activities in populations of Calanus finmarchicus from different longitudes across the North Atlantic Ocean and their relation to changing environmental conditions. C. finmarchicus was sampled across the North Atlantic in basins with decreasing temperature regimes from east to west (Iceland Basin, Irminger Basin and Labrador Basin) in late March/early April 2013. Potential maximum enzyme activities of digestive (proteinases and lipases/esterases) and metabolic (citrate synthase) enzymes of copepods from all sampling stations were analysed and thermal profiles (5-50°C) of enzyme activities were determined. In order to investigate its acclimation potential, C. finmarchicus were acclimated to 4°C and 15°C for two weeks and thermal profiles of enzyme activities were compared afterwards.
    Keywords: Basin Scale Analysis, Synthesis and Integration; EURO-BASIN
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 7
    facet.materialart.
    Unknown
    (Table 2) Stable carbon and nitrogen isotope ratios and molar C/N ratio for euchaetid and aetideid copepods during POLARSTERN cruise ANT-XXIII/5 (2010)
    PANGAEA
    In:  Supplement to: Laakmann, Silke; Auel, Holger (2009): Longitudinal and vertical trends in stable isotope signatures (d13C and d15N) of omnivorous and carnivorous copepods across the South Atlantic Ocean. Marine Biology, 157(3), 463-471, https://doi.org/10.1007/s00227-009-1332-9
    Details
    Publication Date: 2023-10-28
    Description: Stable isotope (SI) ratios of carbon (d13C) and nitrogen (d15N) were measured in omnivorous and carnivorous deep-sea copepods of the families Euchaetidae and Aetideidae across the Atlantic sector of the Southern Ocean to establish their trophic positions. Due to high and variable C/N ratios related to differences in lipid content, d13C was corrected using a lipid-normalisation model. d15N signals ranged from 3.0-6.9 per mil in mesopelagic species to 7.0-9.5 per mil in bathypelagic congeners. Among the carnivorous Paraeuchaeta species, the epi- to mesopelagic species Paraeuchaeta antarctica had lower d15N values than the mesopelagic P. rasa and bathypelagic P. barbata. The same trend was observed among omnivorous Aetideidae, but was not significant. In the most abundant species P. antarctica, individuals from the western Atlantic had higher d13C and d15N values than specimens at the eastern stations. These longitudinal changes in d13C and d15N values were attributed to regional differences in hydrography and sea surface temperature (SST), in particular related to a northward extension of the Antarctic Polar Front (APF) at the easternmost stations. The results indicate that even in a mesopelagic carnivorous species, the changes in surface stable isotope signatures are pronounced.
    Keywords: ANT-XXIII/5; AWI; Carbon/Nitrogen ratio; Date/Time of event; Depth, bottom/max; Depth, top/min; Element analyser isotope ratio mass spectrometer (EA-IRMS); Elevation of event; Event label; Latitude of event; Life stage; Longitude of event; MSN; Multiple opening/closing net; Number of individuals; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; PS69; PS69/342-1; PS69/343-1; PS69/344-1; PS69/345-1; PS69/346-1; PS69/347-1; PS69/348-1; PS69/349-1; PS69/350-1; PS69/351-1; Species; SPP1158; Station label; δ13C; δ15N
    Type: Dataset
    Format: text/tab-separated-values, 488 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 8
    facet.materialart.
    Unknown
    Respiration rates of tropical Atlantic copepods from the Cape Verde Islands (2013)
    PANGAEA
    In:  Supplement to: Teuber, Lena; Kiko, Rainer; Séguin, François; Auel, Holger (2013): Respiration rates of tropical Atlantic copepods in relation to the oxygen minimum zone. Journal of Experimental Marine Biology and Ecology, 448, 28-36, https://doi.org/10.1016/j.jembe.2013.06.012
    Details
    Publication Date: 2023-12-18
    Description: Copepods were sampled at two sampling sites off the island of São Vicente, Cape Verde Archipelago, in spring (March/April) and early summer (May/June) of 2010. The two sampling sites were located in Mindelo Bay (16.90N, 25.01W; bottom depth 22 m) and around 8 km off the town of São Pedro (16.77N, 25.12W; bottom depth 800 m). Samples were collected on board the local fishing vessel 'Sinagoga' using a WP-2 net (Hydrobios, 0.26 m**2 mouth opening, 200 µm mesh size). The net was either applied as a driftnet, drifting for 10 min in 22 to 0 m depth below the surface, or it was towed vertically with a towing speed of 0.5 m/s**1. For stratified sampling, the net was deployed in repetitive hauls from 560 to 210 m, from 210 to 80 m, and from 80 to 0 m in March/April and from 600 to 300 m, 300 to 100 m, and 100 to 0 m in May/June. Additional depth-integrated hauls were conducted from 600-0 m or 500-0 m during both field campaigns. Respiration rates of epi- and mesopelagic calanoid copepods were measured in the land-based laboratory at the Instituto Nacional de Desenvolvimento das Pescas (INDP) in Mindelo. Oxygen consumption was measured non-invasively by optode respirometry at three different ambient temperatures (13, 18, and 23°C) with a 10-channel oxygen respirometer (Oxy-10 Mini, PreSens Precision Sensing GmbH, Regensburg, Germany). All experiments were run in darkness in temperature-controlled incubators (LMS Cooled Incubator Series 1A, Model 280) equipped with water baths to ensure constant temperatures throughout the experiments, tolerating a variation of ±1°C.
    Keywords: Cape Verde; Climate - Biogeochemistry Interactions in the Tropical Ocean; Counting; Date; Depth, bottom/max; Depth, top/min; DEPTH, water; Drift net; DRIFT-NET; Duration; Elapsed time; Event label; Individual dry mass; Individual respiration rate; Individuals; Latitude of event; Longitude of event; MindeloBay-01; MindeloBay-02; Oxygen optode, mini sensor spot; Respiration rate, dry mass-specific; SaoPedro-01; SaoPedro-02; SaoPedro-03; SaoPedro-04; SaoPedro-05; SaoPedro-06; SaoPedro-07; SaoPedro-08; SaoPedro-09; SaoPedro-10; SaoPedro-11; SaoPedro-12; SaoPedro-13; SaoPedro-14; SaoPedro-15; SaoPedro-16; SaoPedro-17; SaoPedro-18; SaoPedro-19; Season; SFB754; Species; Stage; Temperature, technical; WP2; WP-2 towed closing plankton net
    Type: Dataset
    Format: text/tab-separated-values, 2295 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 9
    facet.materialart.
    Unknown
    Respiration rate of Themisto libellula determined experimentally (2014)
    PANGAEA
    In:  Supplement to: Auel, Holger; Werner, Iris (2003): Feeding, respiration and life history of the hyperiid amphipod Themisto libellula in the Arctic marginal ice zone of the Greenland Sea. Journal of Experimental Marine Biology and Ecology, 296(2), 183-197, https://doi.org/10.1016/S0022-0981(03)00321-6
    Details
    Publication Date: 2024-01-26
    Description: Daily ingestion rates of the pelagic hyperiid amphipod Themisto libellula were studied in the marginal ice zone of the Arctic Fram Strait by feeding experiments, respiration measurements and an allometric approach based on body mass. Amphipods were collected by stratified multiple opening/closing net hauls and Rectangular Midwater Trawl (RMT 8) in August 2000 during the expedition ARK XVI/2 of R/V “Polarstern”. T. libellula occurred with abundances of 0.043 and 0.015 ind/m**3 in the upper 30 m of the water column at two RMT 8 stations. Based on respiration data, the daily ingestion necessary to cover metabolic energy demands measured 1.9±0.6% of body carbon per day. Actual prey consumption during feeding experiments with Calanus copepodids as prey was very similar and accounted for 1.9±1.5%/day, indicating that feeding on Calanus can meet the energy demands of T. libellula. In general, experimental results were slightly lower than the maximum potential ingestion (2%/day for an individual of median body dry mass of 32 mg) estimated by an allometric equation based on body mass, but feeding experiments showed a strong variability. Reduced metabolism and low ingestion rates of T. libellula are consistent with low ambient temperature, large body size, slow growth and long life span of this polar species. The effect of the active pelagic life style of T. libellula on metabolism and ingestion rate is discussed in comparison to the sympagic (i.e. ice-associated) amphipod Gammarus wilkitzkii of similar body size living in the same environment. In relation to the mesozooplankton biomass in the investigation area, the predation impact by T. libellula was low. However, high-Arctic conditions also limit the secondary production of principal prey species, such as Calanus glacialis and Calanus hyperboreus, so that even low predation rates may affect the growth of prey populations.
    Keywords: ARK-XVI/2; Fram Strait; MSN; Multiple opening/closing net; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; PS57; Respiration rate, oxygen, per individual; Species; SPP1158; T_libellula_RESPEXP; Treatment: temperature; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 100 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    Prosome length as well as carbon and nitrogen content of Calanus finmarchicus from the North Atlantic collected during Maria S. Merian cruise MSM26 in spring 2013 (2014)
    PANGAEA
    Details
    Publication Date: 2024-02-02
    Description: The prosome length of copepods from each station was measured on board with a dissecting microscope equipped with an ocular micrometer. Individuals were placed in pre-weighed tin caps and dried for 48 h at 60°C on board. Dry samples were transferred to the AWI and weighed again. Copepod dry mass was then calculated as the difference between the empty weight and the weight of the tin cap containing one individual. The content of carbon (C) and nitrogen (N) then was analysed with a CN-analyser (EuroEA Element Analyser, Hekatech) with acetanilide as standard.
    Keywords: Basin Scale Analysis, Synthesis and Integration; Carbon content per individual; Date/Time of event; D-MOC; Double opening/closing plankton net; Element analyser CNS, EURO EA; EURO-BASIN; Event label; Individual dry mass; Latitude of event; Life stage; Longitude of event; Maria S. Merian; Measured; MSM26; MSM26_126-9; MSM26_127-17; MSM26_131-17; MSM26_134-19; MSM26_135-16; MSM26_136-8; Nitrogen content per individual; North Atlantic; Prosome, length; Sample ID; Taxon/taxa; Uniform resource locator/link to reference; Weighted
    Type: Dataset
    Format: text/tab-separated-values, 1152 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...