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  • Data  (27)
  • 2015-2019  (27)
Document type
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  • 1
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    Carbon and nitrogen content of the diet of Temora longicornis under different nutrient regimes (2018)
    PANGAEA
    Details
    Publication Date: 2023-06-19
    Keywords: AWI_BioOce; Biological Oceanography @ AWI; Biomass as carbon per volume; Biomass as nitrogen per volume; Carbon, organic, particulate mass; Carbon/Nitrogen ratio; Carbon per cell; Cells, total; Experimental treatment; Nitrogen, organic, particulate mass; Nitrogen per cell; Number of cells; Replicate; Sampling date
    Type: Dataset
    Format: text/tab-separated-values, 168 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Carbon and nitrogen contents for the diatom Conticribra weissflogii (2019)
    PANGAEA
    Details
    Publication Date: 2023-06-19
    Description: The larvae of the reef-building polychaete Lanice conchilega can make up to 15% of the summer zooplankton biomass in the North Sea. Despite their importance for reef maintenance (which positively affects the benthic community), little is known about the trophic ecology of this meroplanktonic larva. Qualitative and quantitative estimates of carbon (C) transfer between trophic levels and of fatty acid (FA)-specific assimilation, biosynthesis, and bioconversion can be obtained by compound-specific stable isotope analysis of FA. The present work tested the hypothesis that the concept of fatty acid trophic markers (FATM), widely used for studies on holoplankton with intermediate to high lipid contents, is also applicable to lipid-poor organisms such as meroplanktonic larvae. The incorporation of isotopically-enriched dietary C by L. conchilega larvae was traced, and lipid assimilation did not follow FA-specific relative availabilities in the diet. Furthermore, FAs that were unavailable in the diet, such as 22:5(n-3), were recorded in L. conchilega, suggesting their bioconversion by the larvae. The results indicate that L. conchilega larvae preferentially assimilate certain FAs and regulate their FA composition (lipid homeostasis) independently of that of their diet. Their quasi-homeostatic response to dietary FA availability could imply that the concept of FATM has limited application in lipid-poor organisms such as L. conchilega larvae.
    Keywords: assimilation; bioconversion; Carbon, organic, total per volume; Carbon/Nitrogen ratio; Cell; compound-specific stable isotope analysis; DATE/TIME; Diatoms, biomass as carbon; Diatoms, biomass as nitrogen; Diatoms, carbon per cell; Diatoms, nitrogen per cell; fatty acid trophic markers; lipid-poor species; meroplanktonic larvae; Nitrogen; Number of cells; polychaete; Replicate; Species
    Type: Dataset
    Format: text/tab-separated-values, 60 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Fatty acid contents for the diatom Conticribra weissflogii (2019)
    PANGAEA
    Details
    Publication Date: 2023-06-19
    Description: The larvae of the reef-building polychaete Lanice conchilega can make up to 15% of the summer zooplankton biomass in the North Sea. Despite their importance for reef maintenance (which positively affects the benthic community), little is known about the trophic ecology of this meroplanktonic larva. Qualitative and quantitative estimates of carbon (C) transfer between trophic levels and of fatty acid (FA)-specific assimilation, biosynthesis, and bioconversion can be obtained by compound-specific stable isotope analysis of FA. The present work tested the hypothesis that the concept of fatty acid trophic markers (FATM), widely used for studies on holoplankton with intermediate to high lipid contents, is also applicable to lipid-poor organisms such as meroplanktonic larvae. The incorporation of isotopically-enriched dietary C by L. conchilega larvae was traced, and lipid assimilation did not follow FA-specific relative availabilities in the diet. Furthermore, FAs that were unavailable in the diet, such as 22:5(n-3), were recorded in L. conchilega, suggesting their bioconversion by the larvae. The results indicate that L. conchilega larvae preferentially assimilate certain FAs and regulate their FA composition (lipid homeostasis) independently of that of their diet. Their quasi-homeostatic response to dietary FA availability could imply that the concept of FATM has limited application in lipid-poor organisms such as L. conchilega larvae.
    Keywords: assimilation; Atomic weight; Atom percent; bioconversion; Carbon, number of atoms; compound-specific stable isotope analysis; Fatty acid, common name; Fatty acid, IUPAC nomenclature; Fatty acid, n-x nomenclature; Fatty acid as carbon; Fatty acid as carbon per cell; Fatty acid as percentage of total fatty acids; Fatty acid content; Fatty acid per cell; Fatty acids, total; Fatty acids, δ13C; fatty acid trophic markers; Hydrogen, number of atoms; lipid-poor species; meroplanktonic larvae; Number of insaturations; Oxygen, number of atoms; polychaete; Replicate; Species
    Type: Dataset
    Format: text/tab-separated-values, 1669 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Carbon and nitrogen contents of the diet of Temora longicornis under different nutrient regimes (2018)
    PANGAEA
    Details
    Publication Date: 2023-06-19
    Keywords: AWI_BioOce; Biological Oceanography @ AWI; Biomass as carbon per volume; Biomass as nitrogen per volume; Carbon, organic, particulate mass; Carbon/Nitrogen ratio; Carbon per cell; Cells, total; Experimental treatment; Nitrogen, organic, particulate mass; Nitrogen per cell; Number of cells; Replicate; Sampling date
    Type: Dataset
    Format: text/tab-separated-values, 168 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Vital rate measurements and carbon and nitrogen contents of Temora longicornis under different nutrient regimes (2018)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-07-06
    Description: The copepod Temora longicornis depends on constant prey availability. Given that climate change may induce food regime shifts, our research goal was to understand copepod energy allocation in relation to diet quality. The working hypothesis was that Temora performs better on the diet whose elemental ratio is closest to its own. Diatoms (Diat) and dinoflagellates (Dino) cultured in nutrient-replete (+) and nitrogen-depleted (-) conditions were fed to the copepods. Ingestion, respiration, excretion, and egg and faecal pellet production rates were measured. Carbon (C) and nitrogen (N) budgets were built to investigate differences in dietary C and N partitioning. Copepods fed with nitrogen-depleted diatoms (Diat-), which had the most different C:N ratio to that of T. longicornis, had high metabolic losses and low growth. In contrast, copepods fed with nitrogen-rich dinoflagellates (Dino+) of closer C:N ratio had high metabolic losses, but the highest investment into somatic and reproductive tissue. The results indicate that, under the current climate scenario and nutrient-replete conditions, dinoflagellates are a better food source for T. longicornis. Furthermore, ingestion, respiration, and faecal pellet integrity are adversely affected by low quality food; and egestion is a main pathway in copepods for eliminating excess carbon.
    Keywords: AWI_BioOce; Biological Oceanography @ AWI
    Type: Dataset
    Format: application/zip, 9 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Carbon, nitrogen, and fatty acid contents for the diatom Conticribra weissflogii and for the larvae of the polychaete Lanice conchilega (2019)
    PANGAEA
    In:  Supplement to: Franco-Santos, Rita Melo; Auel, Holger; Boersma, Maarten; De Troch, Marleen; Graeve, Martin; Meunier, Cédric Léo; Niehoff, Barbara (2019): You are not always what you eat—Fatty acid bioconversion and lipid homeostasis in the larvae of the sand mason worm Lanice conchilega. PLoS ONE, 14(6), e0218015, https://doi.org/10.1371/journal.pone.0218015
    Details
    Publication Date: 2023-07-06
    Description: The larvae of the reef-building polychaete Lanice conchilega can make up to 15% of the summer zooplankton biomass in the North Sea. Despite their importance for reef maintenance (which positively affects the benthic community), little is known about the trophic ecology of this meroplanktonic larva. Qualitative and quantitative estimates of carbon (C) transfer between trophic levels and of fatty acid (FA)-specific assimilation, biosynthesis, and bioconversion can be obtained by compound-specific stable isotope analysis of FA. The present work tested the hypothesis that the concept of fatty acid trophic markers (FATM), widely used for studies on holoplankton with intermediate to high lipid contents, is also applicable to lipid-poor organisms such as meroplanktonic larvae. The incorporation of isotopically-enriched dietary C by L. conchilega larvae was traced, and lipid assimilation did not follow FA-specific relative availabilities in the diet. Furthermore, FAs that were unavailable in the diet, such as 22:5(n-3), were recorded in L. conchilega, suggesting their bioconversion by the larvae. The results indicate that L. conchilega larvae preferentially assimilate certain FAs and regulate their FA composition (lipid homeostasis) independently of that of their diet. Their quasi-homeostatic response to dietary FA availability could imply that the concept of FATM has limited application in lipid-poor organisms such as L. conchilega larvae.
    Keywords: assimilation; bioconversion; compound-specific stable isotope analysis; fatty acid trophic markers; lipid-poor species; meroplanktonic larvae; polychaete
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Efficiency calculations for Temora longicornis under different nutrient regimes (2018)
    PANGAEA
    Details
    Publication Date: 2023-07-06
    Keywords: AWI_BioOce; Biological Oceanography @ AWI; Calculated; Event label; Experimental treatment; German Bight, North Sea; HelgolandRoads_temora_longicornis_2016; Kabeltonne; Replicate; Temora longicornis, female, absorption efficiency as carbon; Temora longicornis, female, absorption efficiency as nitrogen; Temora longicornis, female, egg production rate as carbon per individual; Temora longicornis, female, egg production rate as nitrogen per individual; Temora longicornis, female, excretion as nitrogen per individual; Temora longicornis, female, fecal pellet production as carbon per individual; Temora longicornis, female, fecal pellet production as nitrogen per individual; Temora longicornis, female, ingestion rate as carbon per individual; Temora longicornis, female, ingestion rate as nitrogen per individual; Temora longicornis, female, net egg production efficiency as carbon; Temora longicornis, female, net egg production efficiency as nitrogen; Temora longicornis, female, net growth efficiency as carbon; Temora longicornis, female, net growth efficiency as nitrogen; Temora longicornis, female, respiration as carbon per individual; Temora longicornis, female, somatic growth rate as carbon per individual; Temora longicornis, female, somatic growth rate as nitrogen per individual
    Type: Dataset
    Format: text/tab-separated-values, 240 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Prosome lengths of Temora longicornis under different nutrient regimes (2018)
    PANGAEA
    Details
    Publication Date: 2023-07-06
    Keywords: AWI_BioOce; Biological Oceanography @ AWI; DATE/TIME; Event label; German Bight, North Sea; HelgolandRoads_temora_longicornis_2016; Kabeltonne; Sea surface temperature; Temora longicornis, female, prosome length
    Type: Dataset
    Format: text/tab-separated-values, 160 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
    facet.materialart.
    Unknown
    Carbon and nitrogen contents for the larvae of the polychaete Lanice conchilega (2019)
    PANGAEA
    Details
    Publication Date: 2023-07-06
    Description: The larvae of the reef-building polychaete Lanice conchilega can make up to 15% of the summer zooplankton biomass in the North Sea. Despite their importance for reef maintenance (which positively affects the benthic community), little is known about the trophic ecology of this meroplanktonic larva. Qualitative and quantitative estimates of carbon (C) transfer between trophic levels and of fatty acid (FA)-specific assimilation, biosynthesis, and bioconversion can be obtained by compound-specific stable isotope analysis of FA. The present work tested the hypothesis that the concept of fatty acid trophic markers (FATM), widely used for studies on holoplankton with intermediate to high lipid contents, is also applicable to lipid-poor organisms such as meroplanktonic larvae. The incorporation of isotopically-enriched dietary C by L. conchilega larvae was traced, and lipid assimilation did not follow FA-specific relative availabilities in the diet. Furthermore, FAs that were unavailable in the diet, such as 22:5(n-3), were recorded in L. conchilega, suggesting their bioconversion by the larvae. The results indicate that L. conchilega larvae preferentially assimilate certain FAs and regulate their FA composition (lipid homeostasis) independently of that of their diet. Their quasi-homeostatic response to dietary FA availability could imply that the concept of FATM has limited application in lipid-poor organisms such as L. conchilega larvae.
    Keywords: assimilation; bioconversion; Biomass as carbon; Biomass as carbon per larvae; Biomass as nitrogen; Biomass as nitrogen per larvae; Calculated; Carbon/Nitrogen ratio; Comment; compound-specific stable isotope analysis; DATE/TIME; Dry mass per larvae; fatty acid trophic markers; German Bight, North Sea; HelgolandRoads_larvae_2016; Kabeltonne; LATITUDE; lipid-poor species; LONGITUDE; meroplanktonic larvae; Polychaeta, larvae; polychaete; Replicate; Sample mass; Species
    Type: Dataset
    Format: text/tab-separated-values, 66 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    Fatty acid contents for the larvae of the polychaete Lanice conchilega (2019)
    PANGAEA
    Details
    Publication Date: 2023-07-06
    Description: The larvae of the reef-building polychaete Lanice conchilega can make up to 15% of the summer zooplankton biomass in the North Sea. Despite their importance for reef maintenance (which positively affects the benthic community), little is known about the trophic ecology of this meroplanktonic larva. Qualitative and quantitative estimates of carbon (C) transfer between trophic levels and of fatty acid (FA)-specific assimilation, biosynthesis, and bioconversion can be obtained by compound-specific stable isotope analysis of FA. The present work tested the hypothesis that the concept of fatty acid trophic markers (FATM), widely used for studies on holoplankton with intermediate to high lipid contents, is also applicable to lipid-poor organisms such as meroplanktonic larvae. The incorporation of isotopically-enriched dietary C by L. conchilega larvae was traced, and lipid assimilation did not follow FA-specific relative availabilities in the diet. Furthermore, FAs that were unavailable in the diet, such as 22:5(n-3), were recorded in L. conchilega, suggesting their bioconversion by the larvae. The results indicate that L. conchilega larvae preferentially assimilate certain FAs and regulate their FA composition (lipid homeostasis) independently of that of their diet. Their quasi-homeostatic response to dietary FA availability could imply that the concept of FATM has limited application in lipid-poor organisms such as L. conchilega larvae.
    Keywords: assimilation; Atomic weight; Atom percent; Atom percent excess; bioconversion; Carbon, number of atoms; Carbon, proportion of assimilated; Carbon assimilation; Comment; compound-specific stable isotope analysis; DATE/TIME; Day of experiment; Fatty acid, common name; Fatty acid, IUPAC nomenclature; Fatty acid, n-x nomenclature; Fatty acid as carbon per larvae; Fatty acid as percentage of total fatty acids; Fatty acid content; Fatty acid per larvae; Fatty acids, δ13C; fatty acid trophic markers; German Bight, North Sea; HelgolandRoads_larvae_2016; Hydrogen, number of atoms; Kabeltonne; LATITUDE; lipid-poor species; LONGITUDE; meroplanktonic larvae; Number of insaturations; Oxygen, number of atoms; Polychaeta, larvae; polychaete; Relative to VPDB; Replicate; Species; Turnover rate, carbon
    Type: Dataset
    Format: text/tab-separated-values, 2441 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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