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  • 1
    Online Resource
    Online Resource
    WTZ Südliches Afrika SPACES II: TRAFFIC – Trophische Transfereffizienz im Benguelastrom : Teilprojekt 3: Pelagische Nahrungsnetzstrukturen, trophische Wechselwirkungen und die Rolle des Zooplanktons für die trophische Transfereffizienz im nördlichen und südlichen Benguela-Auftriebssystem : BMBF-Verbundprojekt TRAFFIC : Sachbericht für die Projektlaufzeit 01.07.2018 bis 31.07.2022 (2022)
    Bremen : Universität Bremen (FB 02)
    Details Availability
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (22 Seiten, 2,54 MB) , Illustrationen, Diagramme
    URL: https://edocs.tib.eu/files/e01fb23/1876990775.pdf
    URL: https://doi.org/10.2314/KXP:1876990775
    DOI: 10.2314/KXP:1876990775
    Language: German
    Note: Förderkennzeichen BMBF 03F0797B , Verbundnummer 01183047
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  • 2
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    The Role of Zooplankton Grazing and Nutrient Recycling for Global Ocean Biogeochemistry and Phytoplankton Phenology (2022)
    Details
    Publication Date: 2024-03-12
    Description: Zooplankton plays a notable role in ocean biogeochemical cycles. However, it is often simulated as one generic group and top closure term in ocean biogeochemical models. This study presents the description of three zooplankton functional types (zPFTs, micro‐, meso‐ and macrozooplankton) in the ocean biogeochemical model FESOM‐REcoM. In the presented model, microzooplankton is a fast‐growing herbivore group, mesozooplankton is another major consumer of phytoplankton, and macrozooplankton is a slow‐growing group with a low temperature optimum. Meso‐ and macrozooplankton produce fast‐sinking fecal pellets. With three zPFTs, the annual mean zooplankton biomass increases threefold to 210 Tg C. The new food web structure leads to a 25% increase in net primary production and a 10% decrease in export production globally. Consequently, the export ratio decreases from 17% to 12% in the model. The description of three zPFTs reduces model mismatches with observed dissolved inorganic nitrogen and chlorophyll concentrations in the South Pacific and the Arctic Ocean, respectively. Representation of three zPFTs also strongly affects phytoplankton phenology: Fast nutrient recycling by zooplankton sustains higher chlorophyll concentrations in summer and autumn. Additional zooplankton grazing delays the start of the phytoplankton bloom by 3 weeks and controls the magnitude of the bloom peak in the Southern Ocean. As a result, the system switches from a light‐controlled Sverdrup system to a dilution‐controlled Behrenfeld system. Overall, the results suggest that representation of multiple zPFTs is important to capture underlying processes that may shape the response of ecosystems and ecosystem services to on‐going and future environmental change in model projections.
    Description: Plain Language Summary: Zooplankton plays an important role in the ocean food web and biogeochemical cycles. However, it is often represented in very simple forms in mathematical models that are, for example, used to investigate how marine primary productivity will react to climate change. To understand how these models would change when more complicated formulations for zooplankton are used, we present here a new version of the model with three (instead of only one) zooplankton groups. We find that this more complicated representation leads to higher zooplankton biomass, which is closer to observations, and this stimulates growth of phytoplankton since zooplankton also returns nutrients into the system. In addition, zooplankton grazing controls the seasonal cycle of phytoplankton, as we show for one example in the Southern Ocean.
    Description: Key Points: Nutrient recycling by zooplankton stimulates net primary production in the biogeochemical model REcoM‐2. Modeling zooplankton functional types (zPFTs) leads to a switch from a light‐controlled Sverdrup system to a dilution‐controlled Behrenfeld system. Implementing multiple zPFTs improves the modeled zooplankton biomass and zooplankton‐mediated biogeochemical fluxes.
    Description: Helmholtz Young Investigator Group Marine Carbon and Ecosystem Feedbacks in the Earth System [MarESys]
    Description: https://doi.org/10.1594/PANGAEA.779970
    Description: https://doi.org/10.1594/PANGAEA.785501
    Description: https://doi.org/10.1594/PANGAEA.777398
    Description: https://www.nodc.noaa.gov/OC5/woa18/woa18data.html
    Description: http://sites.science.oregonstate.edu/ocean.productivity/index.php
    Description: https://doi.pangaea.de/10.1594/PANGAEA.942192
    Keywords: ddc:577.7 ; Southern Ocean ; zooplankton ; ocean food web ; biogeochemical cycles ; modeling
    Language: English
    Type: doc-type:article
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    CITATION GEO-LEO
  • 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
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    DATA PANGAEA
  • 4
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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
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    DATA PANGAEA
  • 5
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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
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    DATA PANGAEA
  • 6
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    Copepod community ingestion in the southern Benguela upwelling system during METEOR cruise M153 (2022)
    PANGAEA
    Details
    Publication Date: 2024-05-17
    Keywords: Acartia, c1-c3, ingestion rate of carbon; Acartia, c4-c5, ingestion rate of carbon; Acartia, female, ingestion rate of carbon; Acartia, male, ingestion rate of carbon; Aetideidae, c1-c3, ingestion rate of carbon; Aetideidae, c4-c5, ingestion rate of carbon; Aetideopsis, c4-c5, ingestion rate of carbon; Aetideus, c4-c5, ingestion rate of carbon; Aetideus, male, ingestion rate of carbon; Aetideus armatus, female, ingestion rate of carbon; Aetideus giesbrechti, female, ingestion rate of carbon; Amallothrix, female, ingestion rate of carbon; Augaptilidae, c1-c3, ingestion rate of carbon; Calanidae, c1-c3, ingestion rate of carbon; Calanoida, biomass as dry weight; Calanoida, ingestion rate of carbon; Calanoida, total; Calanoides natalis, c4-c5, ingestion rate of carbon; Calanoides natalis, female, ingestion rate of carbon; Calanoides natalis, male, ingestion rate of carbon; Calanus agulhensis, c4-c5, ingestion rate of carbon; Calanus agulhensis, female, ingestion rate of carbon; Calanus agulhensis, male, ingestion rate of carbon; Calculated; Candacia, c1-c3, ingestion rate of carbon; Candacia, c4c5, ingestion rate of carbon; Candacia bipinnata, female , ingestion rate of carbon; Candacia curta, female, ingestion rate of carbon; Candacia curta, male, ingestion rate of carbon; Candacia sp., female, ingestion rate of carbon; Centropages brachiatus, c1-c3, ingestion rate of carbon; Centropages brachiatus, c4-c5, ingestion rate of carbon; Centropages brachiatus, female, ingestion rate of carbon; Centropages brachiatus, male, ingestion rate of carbon; Centropages bradyi, c1-c3, ingestion rate of carbon; Centropages bradyi, c4-c5, ingestion rate of carbon; Chiridius gracilis, c4-c5, ingestion rate of carbon; Chiridius gracilis, female, ingestion rate of carbon; Clausocalanidae, ingestion rate of carbon; Comment; Cyclopoida, biomass as dry weight; Cyclopoida, ingestion rate of carbon; Cyclopoida, total; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Elevation of event; Euaugaptilus palumboi, c4-c5, ingestion rate of carbon; Euaugaptilus palumboi, female, ingestion rate of carbon; Eucalanus hyalinus, female, ingestion rate of carbon; Eucalanus hyalinus, male, ingestion rate of carbon; Euchaeta, c1-c3, ingestion rate of carbon; Euchaeta, c4-c5, ingestion rate of carbon; Euchaeta acuta, female, ingestion rate of carbon; Euchaeta acuta, male, ingestion rate of carbon; Euchaeta marina, female, ingestion rate of carbon; Euchaeta media, female, ingestion rate of carbon; Euchaeta sp., male, ingestion rate of carbon; Euchirella rostrata, c4-c5, ingestion rate of carbon; Euchirella sp., c1-c3, ingestion rate of carbon; Euchirella sp., c4-c5, ingestion rate of carbon; Event label; Gaetanus brevispinus, male, ingestion rate of carbon; Gaetanus cf. minor, c1-c3, ingestion rate of carbon; Gaetanus cf. minor, c4-c5, ingestion rate of carbon; Gaetanus sp., c4-c5, ingestion rate of carbon; Gaetanus spp., c1-c3, ingestion rate of carbon; Haloptilus longicornis, c1-c3, ingestion rate of carbon; Haloptilus longicornis, c4-c5, ingestion rate of carbon; Haloptilus longicornis, female, ingestion rate of carbon; Haloptilus oxycephalus, female, ingestion rate of carbon; Heterorhabdus spp., c1-c3, ingestion rate of carbon; Heterorhabdus spp., c4-c5, ingestion rate of carbon; Heterorhabdus spp., female, ingestion rate of carbon; Heterorhabdus spp., male, ingestion rate of carbon; Labidocera acuta, female, ingestion rate of carbon; Latitude of event; Longitude of event; Lophothrix frontalis, c4-c5, ingestion rate of carbon; Lophothrix latipes, female, ingestion rate of carbon; Lucicutia, maleagna, female, ingestion rate of carbon; Lucicutia clausii, c4-c5, ingestion rate of carbon; Lucicutia clausii, female, ingestion rate of carbon; Lucicutia clausii, male, ingestion rate of carbon; Lucicutia gaussae, female, ingestion rate of carbon; Lucicutia ovalis, male, ingestion rate of carbon; Lucicutia spp., c1-c3, ingestion rate of carbon; Lucicutia spp., c4-c5, ingestion rate of carbon; Lucicutia spp., female, ingestion rate of carbon; Lucicutia spp., male, ingestion rate of carbon; M153; M153_11-4; M153_12-4; M153_18-15; M153_6-4; M153_7-5; M153_8-4; M153_9-3; Mesocalanus tenuicornis, c1-c3, ingestion rate of carbon; Mesocalanus tenuicornis, c4-c5, ingestion rate of carbon; Mesocalanus tenuicornis, female, ingestion rate of carbon; Mesocalanus tenuicornis, male, ingestion rate of carbon; Meteor (1986); Metridia brevicauda, c4-c5, ingestion rate of carbon; Metridia brevicauda, female, ingestion rate of carbon; Metridia brevicauda, male, ingestion rate of carbon; Metridia effusa, c4-c5, ingestion rate of carbon; Metridia effusa, female, ingestion rate of carbon; Metridia effusa, male, ingestion rate of carbon; Metridia lucens, c4-c5, ingestion rate of carbon; Metridia lucens, female, ingestion rate of carbon; Metridia lucens, male, ingestion rate of carbon; Metridia venusta, c4-c5, ingestion rate of carbon; Metridia venusta, female, ingestion rate of carbon; Metridia venusta, male, ingestion rate of carbon; Metridinidae, c1-c3, ingestion rate of carbon; Monacilla sp., male, ingestion rate of carbon; MSN; Multiple opening/closing net; Nannocalanus, minor, c4-c5, ingestion rate of carbon; Nannocalanus, minor, female, ingestion rate of carbon; Nannocalanus, minor, male, ingestion rate of carbon; Neocalanus gracilis, c1-c3, ingestion rate of carbon; Neocalanus gracilis, c4-c5, ingestion rate of carbon; Neocalanus gracilis, female, ingestion rate of carbon; Neocalanus gracilis, male, ingestion rate of carbon; Nullosetigera helgae, female, ingestion rate of carbon; Nullosetigera impar, female, ingestion rate of carbon; Nullosetigera spp., c4-c5, ingestion rate of carbon; Oithona, ingestion rate of carbon; Oncaeidae, ingestion rate of carbon; Pareucalanus sp., c1-c3, ingestion rate of carbon; Pareucalanus sp., c4-c5, ingestion rate of carbon; Pleuromamma abdominalis, c1-c3, ingestion rate of carbon; Pleuromamma abdominalis, c4-c5, ingestion rate of carbon; Pleuromamma abdominalis, female, ingestion rate of carbon; Pleuromamma abdominalis, male, ingestion rate of carbon; Pleuromamma quadrungulata, c1-c3, ingestion rate of carbon; Pleuromamma quadrungulata, c4-c5, ingestion rate of carbon; Pleuromamma quadrungulata, female, ingestion rate of carbon; Pleuromamma quadrungulata, male, ingestion rate of carbon; Pleuromamma robusta, c4-c5, ingestion rate of carbon; Pleuromamma robusta, male, ingestion rate of carbon; Pleuromamma spp. small, c4-c5, ingestion rate of carbon; Pleuromamma spp. small, female, ingestion rate of carbon; Pleuromamma spp. small, male, ingestion rate of carbon; Pleuromamma xiphias, c4-c5, ingestion rate of carbon; Pleuromamma xiphias, female, ingestion rate of carbon; Pleuromamma xiphias, male, ingestion rate of carbon; Pseudoamallothrix sp., c4-c5, ingestion rate of carbon; Pseudoamallothrix sp., female, ingestion rate of carbon; Pseudochirella sp., c4-c5, ingestion rate of carbon; Rhincalanus cornutus, c4-c5, ingestion rate of carbon; Rhincalanus cornutus, female, ingestion rate of carbon; Rhincalanus nasutus, c1-c3, ingestion rate of carbon; Rhincalanus nasutus, c4-c5, ingestion rate of carbon; Rhincalanus nasutus, female, ingestion rate of carbon; Rhincalanus nasutus, male, ingestion rate of carbon; Scaphocalanus curtus, female, ingestion rate of carbon; Scaphocalanus spp., c1-c3, ingestion rate of carbon; Scaphocalanus spp., c4-c5, ingestion rate of carbon; Scaphocalanus spp., female, ingestion rate of carbon; Scaphocalanus spp., male, ingestion rate of carbon; Scolecithricella spp., c1-c3, ingestion rate of carbon; Scolecithricella spp., c4-c5, ingestion rate of carbon; Scolecithricella spp., female, ingestion rate of carbon; Scolecithricella spp., male, ingestion rate of carbon; Scolecithrix bradyi, c4-c5, ingestion rate of carbon; Scolecithrix bradyi, female, ingestion rate of carbon; Scolecithrix bradyi, male, ingestion rate of carbon; Scolecithrix
    Type: Dataset
    Format: text/tab-separated-values, 4725 data points
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    DATA PANGAEA
  • 7
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    Copepod community ingestion, respiration and length-dry mass relationships in the southern Benguela upwelling system during METEOR cruise M153 (2022)
    PANGAEA
    Details
    Publication Date: 2024-05-17
    Description: Small copepod genera play an important role in marine food webs and biogeochemical fluxes but have been neglected in many studies. Abundance, biomass and carbon consumption rates of small- (〈1 mm prosome length (PL)), medium- (1-1.5 mm PL) and large-sized (〉2 mm PL) copepods along a cross-shelf transect in the southern Benguela upwelling system were determined using rather high taxonomic resolution. Zooplankton samples were collected with a Multinet (Hydrobios Multinet midi, 5 nets with 200 µm meshsize) during the Meteor cruise M153 in February/March 2019. Calanoids contributed on average 55 ± 19% to total copepod abundance and 82 ± 13% to total copepod biomass. Small-sized Oithona spp. (119/114 mg C m-2 d-1) and Clauso-/Paracalanidae (87/263 mg C m-2 d-1) as well as large-sized Calanoides natalis (47/193 mg C m-2 d-1) were the dominant consumers at the most inshore stations. Small and medium-sized copepodite stages of Metridia lucens were also important, especially towards the continental slope. At offshore stations, Para-/Clausocalanidae (17-27 mg C m-2 d-1), Oithona spp. (9-16 mg C m-2 d-1), Pleuromamma spp. (0-16 mg C m-2 d-1), Calanus agulhensis (0-15 mg C m-2 d-1), Acartia spp. (0-12 mg C m-2 d-1), C. natalis (0-10 mg C m-2 d-1) and M. lucens (2-6 mg C m-2 d-1) were dominant consumers. Hence, usually small- and medium-sized copepods dominated total copepod ingestion, emphasizing that inadequate representation of small copepods will lead to significant underestimations and misinterpretations of the functioning of zooplankton communities, and finally to inadequate biogeochemical models.
    Keywords: TRAFFIC; Trophic Transfer Efficiency in the Benguela Current
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 8
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    Copepod length-dry mass relationships in the southern Benguela upwelling system during METEOR cruise M153 (2022)
    PANGAEA
    Details
    Publication Date: 2024-05-17
    Keywords: Comment; Copepoda, mass; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Elevation of event; Event label; Latitude of event; Length, total; Life stage; Longitude of event; M153; M153_14-4; M153_15-3; M153_18-15; M153_18-18; M153_18-47; M153_18-7; M153_2-2; M153_22-5; M153_25-6; M153_29-5; M153_31-3; M153_33-3; M153_3-4; M153_34-6; M153_35-14; M153_35-16; M153_35-6; M153_35-7; M153_37-5; M153_38-5; M153_39-11; M153_39-23; M153_40-6; M153_41-4; M153_45-4; M153_5-4; M153_7-16; M153_7-5; Meteor (1986); MSN; Multiple opening/closing net; Prosome, length; Sample ID; Species; Station label; TRAFFIC; Trophic Transfer Efficiency in the Benguela Current
    Type: Dataset
    Format: text/tab-separated-values, 3366 data points
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    DATA PANGAEA
  • 9
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    Fatty acid composition of zooplankton, fishes and sea birds from the northern Humboldt Current System during Maria S. Merian cruise MSM80 (2022)
    PANGAEA
    Details
    Publication Date: 2024-04-24
    Description: Fatty acids were analyzed by gas chromatography using a DB-FFAP column of 30 m length and 0.25 mm inner diameter and a programmable temperature vaporizer injector. Following the trophic biomarker concept, the fatty acids 16:0, 20:5(n-3) and 22:6(n-3) were classified as typical components of biomembranes. High levels of 16:1(n−7) as well as 16:4(n−1) and 18:1(n−7) were used as diatom markers and 18:4(n−3) as fatty acid marker for dinoflagellates. The fatty acid 18:1(n-9) indicates carnivorous feeding. A carnivory index was applied based on the fatty acid ratio 18:1(n−9) / [16:1(n−7) + 16:4(n−1) + 18:1(n−7) + 18:4(n−3) + 18:1(n−9)] to reflect the proportion of carnivorous compared to herbivorous feeding in an organism. Fatty acid compositions of zooplankton and fish were taxon-specific and did not depend on sampling area or depth. Most species showed a dominance of typical membrane fatty acids, e.g., 16:0, 20:5(n-3) and 22:6(n-3). The dominant copepod Calanus chilensis had a low carnivory index and elevated amounts of diatom fatty acid markers which point to a predominantly herbivorous feeding. Among the krill species, Euphausia mucronata had the lowest carnivory index compared to the other euphausiids indicating a more herbivorous feeding. The squat lobster Pleuroncodes monodon had a significantly lower carnivory ratio compared to the deep-sea decapods Gennadas sp. and Acanthephyra sp. emphasizing its different trophic role compared to other decapods.
    Keywords: 6,9,12,15-Hexadecatetraenoic acid of total fatty acids; ACS; 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-8,11,14-Octadecatrienoic acid of total fatty acids; all-cis-9,12-Octadecadienoic acid of total fatty acids; cis-11-Docosenoic acid of total fatty acids; cis-11-Icosenoic acid of total fatty acids; cis-11-Octadecenoic acid of total fatty acids (IUPAC: Octadec-11-enoic acid); cis-11-Octadecenol of total fatty alcohols; cis-15-Tetracosenoic 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-Octadecenoic acid of total fatty acids (IUPAC: Octadec-9-enoic acid); cis-9-Octadecenol of total fatty alcohols; Coastal Upwelling System in a Changing Ocean; CUSCO; CUSCO-1; Date/Time of event; Depth, bottom/max; Depth, top/min; Docosenol of total fatty alcohols; Eicosenol of total fatty alcohols; Event label; Gas chromatography; Hexadecanoic acid of total fatty acids; Hexadecanol of total fatty alcohols; IKMT; Individual dry mass; Isaac-Kid-Midwater Trawl; Latitude of event; Life stage; Lipids; Longitude of event; Maria S. Merian; Microstructure Profiler; MSM80; MSM80_102-4; MSM80_13-4; MSM80_15-5; MSM80_1-6; MSM80_16-4; MSM80_18-4; MSM80_18-7; MSM80_1-9; MSM80_20-4; MSM80_30-4; MSM80_31-4; MSM80_31-7; MSM80_34-4; MSM80_40-5; MSM80_4-6; MSM80_46-15; MSM80_46-20; MSM80_46-23; MSM80_49-6; MSM80_56-5; MSM80_58-4; MSM80_67-4; MSM80_68-5; MSM80_68-6; MSM80_7-4; MSM80_74-4; MSM80_7-8; MSM80_85-3; MSM80_94-5; MSM80_95-4; MSN; MSSP; Multiple opening/closing net; Octadecanoic acid of total fatty acids; Octadecanol of total fatty alcohols; Optical Profiler, ACS; Order; Phytanic acid of total fatty acids; Sample ID; Species; Station label; Tetradecanoic acid of total fatty acids; Tetradecanol of total alcohols; Wax esters
    Type: Dataset
    Format: text/tab-separated-values, 4235 data points
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    DATA PANGAEA
  • 10
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    Respiration, ingestion and egestion rates of copepods from the northern Humboldt Current System off Peru during Maria S. Merian cruise MSM80 (2022)
    PANGAEA
    Details
    Publication Date: 2024-05-24
    Description: Zooplankton metabolic processes play an important role in carbon budgets and fluxes of pelagic ecosystems. Respiration rates of several copepod species were determined to reveal their energy requirements and assess their significance in the carbon cycle. Respiration rates were measured by optode respirometry and allometrically based on body dry mass (DM). For the on-board measurements, a 10-channel optode respirometer (PreSens Precision Sensing Oxy-10 Mini) was used and experiments were run in gas-tight glass bottles (13-14 ml) filled with filtered seawater to reduce bias by microbial respiration. In addition, respiration rates for all dominant copepod species during MSM80 including copepodite stages C4 to C6 were determined based on individual DM and respective ambient temperatures after Bode et al. (2018). For that, individual DM, if not available from frozen specimens, was determined from formalin/Steedman-preserved samples by weighing the dried samples on a microbalance. Losses in body DM due to formalin/Steedman preservation were considered after Schukat et al. (2021). Respiration rates were calculated separately for the copepod family Eucalanidae (a) as they are rather sluggish while all other copepods exhibited normal activity (b). (a) lnRTF = -2.180 + 0.787 ln(DM) + 0.131T and (b) lnRAC = -0.890 + 0.646 ln(DM) + 0.094T, where R (μl O2 ind-1 h-1) is the individual respiration rate for eucalanid (RTF) and active (RAC) copepods, DM represents dry mass in mg and T the average temperature (°C) of the sampling interval. Respiration rates of the medium- to larger-sized copepods (female prosome length (PL) of 1.2-6.0 mm) were compared to those of "small copepods" (all copepods with female PL 〈1.1 mm and young stages). Medium- to larger-sized species ingested on average 13-212 mg C m-2 d-1 in coastal regions while "small copepods" on average consumed 118-328 mg C m-2 d-1. The potential egestion varied on average from 5-64 mg C m-2 d-1 for medium to larger-sized copepods and 35-98 mg C m-2 d-1 for "small copepods". Data of energy demands, consumption and egestion rates of copepod species differing in size are essential to improve carbon budgets and food-web models in the Humboldt Current System.
    Keywords: Analytical method; calanoid copepods; carbon budgets; Coastal Upwelling System in a Changing Ocean; consumption rates; Copepoda, mass; CUSCO; CUSCO-1; Date/Time of event; Depth, bottom/max; Depth, top/min; Egestion rate of carbon per day per individual; Event label; Ingestion rate of carbon per day per individual; Latitude of event; Life stage; Longitude of event; Maria S. Merian; MSM80; MSM80_102-4; MSM80_10-4; MSM80_104-6; MSM80_13-4; MSM80_14-4; MSM80_15-5; MSM80_1-6; MSM80_16-4; MSM80_18-4; MSM80_20-4; MSM80_22-4; MSM80_25-4; MSM80_28-4; MSM80_30-4; MSM80_38-5; MSM80_40-5; MSM80_43-5; MSM80_45-5; MSM80_4-6; MSM80_46-6; MSM80_53-4; MSM80_56-5; MSM80_58-4; MSM80_60-4; MSM80_66-4; MSM80_67-4; MSM80_68-5; MSM80_70-3; MSM80_7-4; MSM80_74-4; MSM80_78-4; MSM80_80-6; MSM80_89-4; MSM80_90-4; MSM80_94-5; MSM80_95-4; MSM80_96-4; MSM80_99-6; MSN; Multiple opening/closing net; Respiration rate, carbon, per individual; Respiration rate, oxygen, per dry mass; Respiration rate, oxygen, per individual; Sample ID; Species; Station label; Temperature, technical; Upwelling
    Type: Dataset
    Format: text/tab-separated-values, 10108 data points
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