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  • PANGAEA  (19)
  • 2020-2024  (19)
Document type
Keywords
Publisher
Years
Year
  • 1
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    Assimilation rates, compound-specific stable isotope analysis and fatty acid data of dominant Antarctic copepods (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Copepod samples were taken during the Antarctic expedition PS 79 (ANT XXVIII/2) with RV Polarstern (Cape Town – Cape Town, 3 Dec 2011 – 5 Jan 2012). Copepods were collected at Station 53 (60° 3.22'S, 0° 2.14' E) in the Antarctic Weddell Gyre on 28 December 2011 by vertical bongo net hauls down to 300 m depth. Specimens of C. acutus (210 copepodids CV and 160 females) and of C. propinquus (125 females, no CV stages available) were gently sorted from the catch, maintained alive in filtered seawater at 0°C in a cooling container on board and transported to Germany at 0°C by airplane. Feeding carbon-labelled diatoms to these copepods during 9 days of feeding ,13C elucidated assimilation and turnover rates of copepod total lipids as well as specific fatty acids and alcohols. The 13C incorporation into these compounds was monitored by compound-specific stable isotope analysis (CSIA). The differences in lipid assimilation and turnover clearly show that the copepod species exhibit a high variability and plasticity to adapt their lipid production to their various life phases.
    Keywords: Antarctic; ANT-XXVIII/2; BONGO; Bongo net; carbon turnover; CSIA; lipids; Polarstern; PS79; PS79/053-5; South Atlantic Ocean; Zooplankton
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 5.4 MBytes
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Response of zooplankton community succession and trophic links to simulated upwelling conditions during a mesocosm experiment in the coastal upwelling off Callao Bay (Peru) in austral summer 2017 (KOSMOS 2017 Peru mesocosm study) (2022)
    PANGAEA
    Details
    Publication Date: 2024-03-09
    Description: Increasing upwelling intensity and shoaling of the oxygen minimum zone (OMZ) is projected for Eastern Boundary Upwelling Systems (EBUSs) under ocean warming which may have severe consequences for mesopelagic food webs, trophic transfer, and fish production also in the Humboldt Current Upwelling System (HUS). To improve our mechanistic understanding, from February 23, 2017 until April 14, 2017 we performed a 50 days mesocosm experiment in the northern HUS (off Callao Bay, Peru) and monitored the zooplankton development prior to and following a simulated upwelling event through the addition of deeper water of two different OMZ-influenced subsurface waters to four of in total eight mesocosms. To elucidate plankton dynamics and trophic relationships, we followed the temporal development of the mesozooplankton community in relation to that of phytoplankton, analyzed the fatty acid composition and gut fluorescence of dominant copepods, and determined the stable isotope (SI) and elemental composition (C:N) of dominant zooplankton taxa. Zooplankton samples were collected from the mesocosms over the entire experiment duration using an Apstein net (17 cm diameter, 100 µm mesh) to determine abundance and taxonomic composition of the zooplankton community, and to analyze fatty acid composition, gut fluorescence and elemental composition of dominant zooplankton. Furthermore, abundance and biomass of zooplankton groups was estimated from scanned ZooScan images.
    Keywords: Abundance; Biomass; Climate - Biogeochemistry Interactions in the Tropical Ocean; Coastal Upwelling System in a Changing Ocean; CUSCO; Gut fluorescence; Humboldt Current System; KOSMOS_2017; KOSMOS_2017_Peru; KOSMOS Peru; Lipid; MESO; mesocosm experiment; Mesocosm experiment; Oxygen Minimun zone; SFB754; Stable isotopes; Zooplankton
    Type: Dataset
    Format: application/zip, 5 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Size measurements of calanoid copepods in the subtropical South Atlantic Ocean during POLARSTERN cruise PS81 (ANT-XXIX/1) (2022)
    PANGAEA
    Details
    Publication Date: 2024-03-09
    Keywords: ANT-XXIX/1; calanoid copepods; Life stage; MSN; Multiple opening/closing net; Number of specimens; Polarstern; Prosome, length; Prosome length, standard deviation; PS81; PS81/015-2; PS81/016-4; South Atlantic Ocean; Species; subtropical area; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 1071 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    KOSMOS 2017 Peru mesocosm study: Biomass of zooplankton taxa determined by ZooScan (2023)
    PANGAEA
    Details
    Publication Date: 2024-03-09
    Description: Biomass of zooplankton taxa in µg DM per liter as determined by ZooScan, using published area to dry weight relationships (Lehette & Hernandez-Leon 2009). Each data point is one sampling day (date) in one mesocosm (MK). For details on experimental treatments and sampling, refer to Bach et al. 2021 (https://doi.org/10.5194/bg-17-4831-2020) and Ayon et al. 2022 (https://doi.org/10.5194/bg-2022-157). Raw images are stored in https://ecotaxa.obs-vlfr.fr/prj/3784. All taxonomic categories are self-expanatory.
    Keywords: Abundance; Acartia spp., biomass, dry mass; Biomass; Bivalvia, biomass, dry mass; Branchiostoma spp., biomass, dry mass; Calanoida, biomass, dry mass; Ceratium spp., biomass, dry mass; Climate - Biogeochemistry Interactions in the Tropical Ocean; Cnidaria, biomass, dry mass; Coastal Upwelling System in a Changing Ocean; Copepoda, biomass, dry mass; Copepoda, nauplii, biomass, dry mass; Corycaeidae, biomass, dry mass; Crustacea, larvae, biomass, dry mass; CUSCO; Cyclopoida, biomass, dry mass; DATE/TIME; Diatoms, centrales, biomass, dry mass; Gastropoda, biomass, dry mass; Gut fluorescence; Harpacticoida, biomass, dry mass; Hemicyclops spp., biomass, dry mass; Humboldt Current System; KOSMOS_2017; KOSMOS_2017_Peru; KOSMOS Peru; Lipid; MESO; mesocosm experiment; Mesocosm experiment; Mesocosm label; Noctilucales, biomass, dry mass; Oncaeidae, biomass, dry mass; Oxygen Minimun zone; Paracalanus spp., biomass, dry mass; Polychaeta, biomass, dry mass; Sample code/label; Sample volume; SFB754; Spionidae, biomass, dry mass; Stable isotopes; Tintinnida, biomass, dry mass; Zooplankton; Zooplankton, biomass, dry mass
    Type: Dataset
    Format: text/tab-separated-values, 2430 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    KOSMOS 2017 Peru mesocosm study: Zooplankton species/groups abundance (2023)
    PANGAEA
    Details
    Publication Date: 2024-03-09
    Description: Zooplankton species/groups abundance table per mesocosm and sampling day. Abundances are given as individual per m-3 and individuals per liter.
    Keywords: Abundance; Abundance per volume; Biomass; Class; Climate - Biogeochemistry Interactions in the Tropical Ocean; Coastal Upwelling System in a Changing Ocean; CUSCO; DATE/TIME; Day of experiment; Gut fluorescence; Humboldt Current System; KOSMOS_2017; KOSMOS_2017_Peru; KOSMOS Peru; Life stage; Lipid; MESO; mesocosm experiment; Mesocosm experiment; Mesocosm label; Order; Oxygen Minimun zone; SFB754; Species; Stable isotopes; Treatment; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 15477 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    KOSMOS 2017 Peru mesocosm study: Gut fluorescence and C/N ratio of Paracalanus sp. (2023)
    PANGAEA
    Details
    Publication Date: 2024-03-09
    Description: Gut fluorescence and C/N ratio of Paracalanus sp. determined during two occassions during the mesocosm experiment (Sampling Day 21/22 and 34/35).
    Keywords: Abundance; Biomass; Carbon/Nitrogen ratio; Climate - Biogeochemistry Interactions in the Tropical Ocean; Coastal Upwelling System in a Changing Ocean; CUSCO; Day of experiment; Gut fluorescence; Gut fluorescence, dry mass; Humboldt Current System; KOSMOS_2017; KOSMOS_2017_Peru; KOSMOS Peru; Lipid; MESO; mesocosm experiment; Mesocosm experiment; Mesocosm label; Oxygen Minimun zone; SFB754; Species; Stable isotopes; Time in minutes; Time point, descriptive; Treatment; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 1088 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Fatty acid and stable isotope composition of zooplankton, fishes and sea birds from the northern Humboldt Current System during Maria S. Merian cruise MSM80 (2022)
    PANGAEA
    Details
    Publication Date: 2024-03-09
    Description: A combined stable isotope and fatty acid trophic biomarker approach was adopted for key zooplankton taxa and higher trophic positions of the northern Humboldt Current System to elucidate the pelagic food-web structure and to better understand trophic interactions. Samples covered an extensive spatial range from 8.5°S to 16°S and a vertical range down to 1,000 m depth. Immediately after each haul, specimens were sorted alive in the lab and apparently live and healthy individuals were stored in vials and deep-frozen at -80°C until further lipid and stable isotope analyses. The comprehensive data set covered over 20 zooplankton taxa and indicated that three biomass-rich crustacean species usually dominated the zooplankton community, i.e., the copepods Calanus chilensis at the surface and Eucalanus inermis in the pronounced oxygen minimum zone and the krill Euphausia mucronata, resulting in an overall low number of major trophic pathways toward anchovies. In addition, the semi-pelagic squat lobster Pleuroncodes monodon appears to play a key role in the benthic-pelagic coupling. By partly feeding on benthic resources and by diel vertical migration, P. monodon provides a unique pathway for returning carbon and energy from the sea floor to the epipelagic layer, increasing the food supply for pelagic fish.
    Keywords: Coastal Upwelling System in a Changing Ocean; CUSCO
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    KOSMOS 2017 Peru mesocosm study: Abundance of zooplankton taxa determined by ZooScan (2022)
    PANGAEA
    Details
    Publication Date: 2024-03-09
    Description: This dataset shows abundance of zooplankton taxa in individuals per liter as determined by ZooScan. Each data point is one sampling day (date) in one mesocosm (MK). For details on experimental treatments and sampling, refer to Bach et al. 2021 (https://doi.org/10.5194/bg-17-4831-2020) and Ayon et al. 2022 (https://doi.org/10.5194/bg-2022-157). Raw images are stored in https://ecotaxa.obs-vlfr.fr/prj/3784. All taxonomic categories are self-explanatory.
    Keywords: Abundance; Acartia spp.; Biomass; Bivalvia; Branchiostoma spp.; Calanoida; Ceratium spp.; Climate - Biogeochemistry Interactions in the Tropical Ocean; Cnidaria; Coastal Upwelling System in a Changing Ocean; Copepoda; Copepoda, nauplii; Corycaeidae; Crustacea, larvae; CUSCO; Cyclopoida; DATE/TIME; Diatoms, centrales; Gastropoda; Gut fluorescence; Harpacticoida; Hemicyclops spp.; Humboldt Current System; KOSMOS_2017; KOSMOS_2017_Peru; KOSMOS Peru; Lipid; MESO; mesocosm experiment; Mesocosm experiment; Mesocosm label; Noctilucales; Oncaeidae; Oxygen Minimun zone; Paracalanus spp.; Polychaeta; Sample code/label; Sample volume; SFB754; Spionidae; Stable isotopes; Tintinnida; Zooplankton; ZOOSCAN
    Type: Dataset
    Format: text/tab-separated-values, 2430 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    Fatty acid composition of two terrestrial and two marine decapod crustaceans from Taiwan (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Males of the four crab species Percnon affine (H. Milne Edwards, 1853), Grapsus albolineatus (Latreille in Milbert, 1812), Orisarma intermedium (Schubart &Ng, 2020), and Geothelphusa albogilva (Shy, Ng & Yu, 1994), were collected in the southern part of Taiwan in May 2007. Individuals were starved for 12 days and midgut glands were dissected before and after the starvation period. Midgut glands were lyophilized and total lipids were extracted with dichloromethane:methanol (2:1 per volume) and an aqueous solution of 0.88% KCl. Extracted lipid mass was determined gravimetrically. Lipid classes were separated and quantified using Thin-Layer Chromatography with an integrated flame ionization detector (MK-5 TLC/FID analyzer, Iatron Laboratories). Lipids were converted to fatty acids methyl esters (FAME) by applying methanol containing 3% concentrated sulfuric acid. FAMEs were quantified by gas chromatography equipped with a DB-FFAP column, a programmable temperature vaporizer injector, and a flame ionization detector. Helium was used as carrier gas. Fatty acids were identified by retention times and by using fish oil standard (Marinol). Data are supplement to: Stumpp et al (2021) Dietary preferences of brachyuran crabs from Taiwan for marine or terrestrial food sources: evidence based on fatty acid trophic markers accepted for publication in Frontiers in Zoology
    Keywords: algae; Decapoda; fatty acids; lipids; midgut gland; triacylglycerols; trophic relationships; vascular plants
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 202.7 kBytes
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Copepod prosome length in the southern Benguela upwelling system during Meteor cruise M153 (2022)
    PANGAEA
    Details
    Publication Date: 2024-05-17
    Keywords: Prosome, length; Prosome length, standard deviation; Species; TRAFFIC; Trophic Transfer Efficiency in the Benguela Current
    Type: Dataset
    Format: text/tab-separated-values, 561 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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