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  • 2020-2024  (14)
  • 2023  (5)
  • 2021  (9)
Document type
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Year
  • 1
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    World Ocean Review : The Ocean, Guarantor of Life – Sustainable Use, Effective Protection (2021)
    Maribus
    Details
    Publication Date: 2024-03-14
    Description: The seventh edition of the »World Ocean Review« focuses on the effects of climate change on the physics of the ocean and on its biotic communities; the consequences of fishing, shipping, resource extraction, energy production, and marine pollution; and the questions of how active substances from the ocean can be used and how the ocean can be managed in the future in such a way that both its protection and the participation of as many people as possible in its services and goods are ensured.
    Type: Book , NonPeerReviewed
    Format: text
    Location Call Number Limitation Availability
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    OceanRep: Book
  • 2
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    World ocean review: Lebensgarant Ozean – nachhaltig nutzen, wirksam schützen (2021)
    Maribus
    Details
    Publication Date: 2024-03-14
    Description: Im Fokus der siebten Ausgabe des »World Ocean Review« stehen die Auswirkungen des Klimawandels auf die Physik des Meeres und auf seine Lebensgemeinschaften; die Folgen von Fischerei, Schifffahrt, Ressourcenabbau, Energiegewinnung und Meeresverschmutzung sowie die Fragen, wie sich Wirkstoffe aus dem Meer nutzen lassen und wie der Ozean künftig so verwaltet werden kann, dass sowohl sein Schutz als auch die Teilhabe möglichst aller Menschen an seinen Leistungen und Gütern gewährleistet sind.
    Type: Book , NonPeerReviewed
    Format: text
    Location Call Number Limitation Availability
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    OceanRep: Book
  • 3
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    Rafting assemblages on pelagic Sargassum and floating marine debris from the Sargasso Sea (2021)
    PANGAEA
    Details
    Publication Date: 2023-06-01
    Description: Pelagic Sargassum and floating marine debris were collected in the Sargasso Sea (subtropical NW Atlantic) during the cruise MSM41 of the German research vessel Maria S. Merian in April 2015. Flotsam items were collected with a dip net (mesh size: 1 mm) from the rescue boat of the research vessel at 19 stations distributed in coordination with the other sampling activities of the cruise. Few, mostly larger, debris samples were taken from aboard the research vessel using a dip net with a mesh size of 9 cm. The exact sampling position of each floating item was recorded by a handheld GPS. All mobile epifaunal organisms were carefully washed down from the flotsam items with freshwater and retrieved in a sieve with a mesh size of 250 µm. The species were identified and the individuals counted. Each Sargassum thallus was inspected under a stereo microscope to identify the attached sessile epifaunal species. Sessile species were not quantified. The marine debris items or sub-samples thereof (in case of large bulky items) were preserved in buffered formalin-seawater solution. The sessile epifauna on the debris items was analyzed after the cruise in the laboratories of the Alfred Wegener Institute in Bremerhaven, Germany. Each Sargassum clump was blotted on tissue paper to remove adherent seawater and weighed. The sizes of the debris items were measured to calculate the surface area.
    Keywords: Comment; DATE/TIME; epibiota; Event label; floating marine debris; LATITUDE; LITTER; Litter Survey; LONGITUDE; Maria S. Merian; Mobility; MSM41; MSM41_litter-A; MSM41_litter-B; MSM41_litter-C; MSM41_litter-D; MSM41_litter-E; MSM41_litter-F; MSM41_litter-G; MSM41_litter-G1; MSM41_litter-H; MSM41_litter-I; MSM41_litter-J; MSM41_litter-K; MSM41_litter-M; MSM41_litter-N; MSM41_litter-O; MSM41_litter-P; MSM41_litter-Q; MSM41_litter-S; MSM41_litter-U; MSM41_litter-V; pollution; rafting; Rafting species; Sample ID; Sargasso Sea; Sargassum community; South Atlantic Ocean; Station label; Substratum; Substratum category; Taxon/taxa
    Type: Dataset
    Format: text/tab-separated-values, 8362 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Rafting communities on pelagic Sargassum and floating marine debris in the Sargasso Sea (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Pelagic Sargassum and floating marine debris were collected during cruise MSM41 of the German research vessel Maria S. Merian in April 2015 in the Sargasso Sea, western subtropical North Atlantic. In total 39 debris samples and 42 Sargassum samples were taken and characterized. The associated biota was analyzed. Mobile species were counted, sessile organisms were recorded as present/absent. A visual ship-based survey was conducted to quantify pelagic Sargassum and floating marine debris in the Sargasso Sea. Biomass and surface area of Sargassum was measured from thalli beached at Sisal Beach, Yucatan peninsula, Mexico to establish the biomass:surface area ratio for the two species Sargassum fluitans and Sargassum natans.
    Keywords: epibiota; floating marine debris; pollution; rafting; Sargasso Sea; Sargassum community
    Type: Dataset
    Format: application/zip, 5 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Characteristics of flotsam samples from Sargasso Sea (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Clumps of pelagic Sargassum as well as floating marine debris were collected during cruise MSM41 of the German research vessel Maria S. Merian in the Sargasso Sea (subtropical NW Atlantic) in April 2015. Samples were taken with a dip net (mesh size: 1 mm) from the rescue boat of the research vessel at 19 stations distributed in coordination with the other sampling activities of the cruise. Few, mostly larger, debris samples were taken from aboard the research vessel using a dip net with a mesh size of 9 cm. The exact sampling position of each floating item was recorded by a handheld GPS. In total, 42 Sargassum samples and 41 samples of marine debris were collected. On board the vessel, the Sargassum samples were analyzed for their species composition (Sargassum natans, Sargassum fluitans, indeterminable small fragments). Each fraction was weighed (wet weight) after the algae had been blotted on tissue paper to remove adherent seawater. The type of each debris sample was determined and the sizes of the debris samples were measured. Small objects were preserved in buffered seawater-formalin solution for later analysis of the associated biota. Small sub-samples have been taken from samples, which were too large to be preserved in total. Polymer compositions of the plastic debris samples were analyzed by Near Infrared Spectroscopy.
    Keywords: Comment; DATE/TIME; epibiota; Event label; floating marine debris; Image; LATITUDE; LITTER; Litter Survey; LONGITUDE; Maria S. Merian; MSM41; MSM41_litter-A; MSM41_litter-B; MSM41_litter-C; MSM41_litter-D; MSM41_litter-E; MSM41_litter-F; MSM41_litter-G; MSM41_litter-G1; MSM41_litter-H; MSM41_litter-I; MSM41_litter-J; MSM41_litter-K; MSM41_litter-M; MSM41_litter-N; MSM41_litter-O; MSM41_litter-P; MSM41_litter-Q; MSM41_litter-S; MSM41_litter-T; MSM41_litter-U; MSM41_litter-V; Near infrared spectroscopy; pollution; Polymer; rafting; Sample ID; Sample mass; Sargasso Sea; Sargassum, wet mass; Sargassum community; Sargassum fluitans; Sargassum fluitans, wet mass; Sargassum indeterminata; Sargassum indeterminata, wet mass; Sargassum natans; Sargassum natans, wet mass; South Atlantic Ocean; Station label; Substrate type; Substratum; Surface area
    Type: Dataset
    Format: text/tab-separated-values, 855 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Natural and anthropogenic flotsam in the Sargasso Sea (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: During cruise MSM41 of the German research vessel Maria S. Merian in April 2015 a visual ship based survey was conducted on the composition and density of natural and anthropogenic flotsam in the Sargasso Sea (subtropical NW Atlantic). On transits between the regular stations of the cruise, flotsam was quantified on transects of 10 m width and lengths of 9.1 - 25.5 km. Floating marine debris items passing through the transect was recorded and specified (item type, size and color) when possible. The position of each floating item was determined as the position of the observer at the moment the item was registered using a handheld GPS. Clumps of pelagic Sargassum were too numerous to be counted individually throughout an entire transect. Instead, numbers of clumps passing through the transect area were counted within time intervals of 30 seconds, interrupted by breaks of 30 seconds. In extremely dense accumulations or windrows of pelagic Sargassum, the number of clumps was estimated in broader but less accurate entities (i.e., tens or hundreds of clumps). The estimated minimum size of items identifiable from the moving ship was 2 cm. Each flotsam item was assigned to a material category (e.g., plastics, Styrofoam, metal).
    Keywords: Comment; epibiota; Event label; Floating items; floating marine debris; Item; LATITUDE; LITTER; Litter Survey; LONGITUDE; Maria S. Merian; Material; MSM41; MSM41_litter-T1; MSM41_litter-T10; MSM41_litter-T11; MSM41_litter-T12; MSM41_litter-T13; MSM41_litter-T14; MSM41_litter-T15; MSM41_litter-T16; MSM41_litter-T17; MSM41_litter-T18; MSM41_litter-T19; MSM41_litter-T2; MSM41_litter-T20; MSM41_litter-T21; MSM41_litter-T22; MSM41_litter-T23; MSM41_litter-T24; MSM41_litter-T25; MSM41_litter-T26; MSM41_litter-T27; MSM41_litter-T28; MSM41_litter-T29; MSM41_litter-T3; MSM41_litter-T30; MSM41_litter-T31; MSM41_litter-T32; MSM41_litter-T33; MSM41_litter-T34; MSM41_litter-T35; MSM41_litter-T37; MSM41_litter-T38; MSM41_litter-T39; MSM41_litter-T4; MSM41_litter-T40; MSM41_litter-T41; MSM41_litter-T42; MSM41_litter-T43; MSM41_litter-T44; MSM41_litter-T45; MSM41_litter-T46; MSM41_litter-T47; MSM41_litter-T48; MSM41_litter-T49; MSM41_litter-T5; MSM41_litter-T50; MSM41_litter-T51; MSM41_litter-T52; MSM41_litter-T53; MSM41_litter-T54; MSM41_litter-T55; MSM41_litter-T56; MSM41_litter-T57; MSM41_litter-T58; MSM41_litter-T59; MSM41_litter-T6; MSM41_litter-T60; MSM41_litter-T61; MSM41_litter-T62; MSM41_litter-T63; MSM41_litter-T64; MSM41_litter-T65; MSM41_litter-T7; MSM41_litter-T8; pollution; rafting; Sargasso Sea; Sargassum community; South Atlantic Ocean; Transect
    Type: Dataset
    Format: text/tab-separated-values, 3472 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Surface area:biomass relationship for Sargassum fluitans and Sargassum natans from Sisal Beach, Mexico (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: To establish the surface area : biomass relationship of pelagic Sargassum spp., individual thalli of beach-cast Sargassum fluitans and Sargassum natans were collected at Sisal Beach, Yucatan peninsula, Mexico in November 2016. 22 thalli each of both species were collected. Additionally, three thalli of an additional species were collected. This species could not be clearly identified and the thalli were not further considered for analysis. Each thalli was blotted with tissue paper to remove adherent seawater and weighed on the beach using a spring balance. Subsequently, the single parts of the thalli (blades, pneumatocysts, stipes) were separated from each other, spread in a tray and photographed together with a ruler as a size reference and a label. The two dimensional projection area of each thallus part was determined using an image analysis software from which the surface area of each three dimensional structure was calculated to obtain the total surface area of the thallus.
    Keywords: Area; Biological sample; BIOS; Calculated; Comment; DATE/TIME; epibiota; floating marine debris; Image; Image analysis; LATITUDE; LONGITUDE; Number of photos; ORDINAL NUMBER; pollution; rafting; Sargasso Sea; Sargassum, wet mass; Sargassum community; Sisal_Beach_Sargassum; Species; Surface area
    Type: Dataset
    Format: text/tab-separated-values, 372 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Metadata of transects of visual ship based flotsam survey in the Sargasso Sea (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: During cruise MSM41 of the German research vessel Maria S. Merian in April 2015 a visual ship based survey was conducted on the composition and density of natural and anthropogenic flotsam in the Sargasso Sea (subtropical NW Atlantic). On transits between the regular stations of the cruise, flotsam was quantified on transects of 10 m width and lengths of 9.1 - 25.5 km. Start and end coordinates were determined from a handheld GPS. This dataset summarizes the metadata of this survey, including the time, coordinates of start and end point of the transects, as well as distance and area covered. Additionally, results are presented as densities of floating marine debris and pelagic Sargassum given in total numbers per transect and standardized to items km-2. The speed of the vessel was recorded from the handheld GPS for 2-7 times per transect in irregular intervals to estimate the average vessel speed during the observations.
    Keywords: epibiota; floating marine debris; LITTER; Litter Survey; Maria S. Merian; MSM41; MSM41_litter-T1; MSM41_litter-T10; MSM41_litter-T11; MSM41_litter-T12; MSM41_litter-T13; MSM41_litter-T14; MSM41_litter-T15; MSM41_litter-T16; MSM41_litter-T17; MSM41_litter-T18; MSM41_litter-T19; MSM41_litter-T2; MSM41_litter-T20; MSM41_litter-T21; MSM41_litter-T22; MSM41_litter-T23; MSM41_litter-T24; MSM41_litter-T25; MSM41_litter-T26; MSM41_litter-T27; MSM41_litter-T28; MSM41_litter-T29; MSM41_litter-T3; MSM41_litter-T30; MSM41_litter-T31; MSM41_litter-T32; MSM41_litter-T33; MSM41_litter-T34; MSM41_litter-T35; MSM41_litter-T37; MSM41_litter-T38; MSM41_litter-T39; MSM41_litter-T4; MSM41_litter-T40; MSM41_litter-T41; MSM41_litter-T42; MSM41_litter-T43; MSM41_litter-T44; MSM41_litter-T45; MSM41_litter-T46; MSM41_litter-T47; MSM41_litter-T48; MSM41_litter-T49; MSM41_litter-T5; MSM41_litter-T50; MSM41_litter-T51; MSM41_litter-T52; MSM41_litter-T53; MSM41_litter-T54; MSM41_litter-T55; MSM41_litter-T56; MSM41_litter-T57; MSM41_litter-T58; MSM41_litter-T59; MSM41_litter-T6; MSM41_litter-T60; MSM41_litter-T61; MSM41_litter-T62; MSM41_litter-T63; MSM41_litter-T64; MSM41_litter-T65; MSM41_litter-T7; MSM41_litter-T8; pollution; rafting; Sargasso Sea; Sargassum community; South Atlantic Ocean
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 27.3 kBytes
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    Hydrolysis rates of bio-based polymers (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Bio-degradation assays were performed for bio-based polymers under environmental conditions with controlled temperature and pH using pH Stat titration. Suspensions of PLA and PBS microparticles, produced by e.g. cryo-milling, were incubated with proteolytic and lipolytic enzymes. Rates of hydrolysis, as determined by counter-titration with a diluted base (NaOH), was recorded for two hours. The thermal profile of PLA hydrolysis by protease was investigated. All measurements were conducted under controlled laboratory conditions.
    Keywords: activation energy; Binary Object; Binary Object (File Size); bio-degradation; BIO-PLASTICS_EUROPE; Developing and Implementing Sustainability-Based Solutions for Bio-Based Plastic Production and Use to Preserve Land and Sea Environmental Quality in Europe; enzymes; File content; microparticles; PBS; PLA; specificity; thermal profile
    Type: Dataset
    Format: text/tab-separated-values, 12 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Hydrolysis rates of biodegradable plastics by the gastric fluid and enzymatic activities of the gastric fluid of the edible crab Cancer pagurus (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: The hydrolytic degradation of biodegradable and conventional plastics by the gastric fluid of the edible crab Cancer pagurus were assayed in-vitro with pH Stat titration. Suspensions of different microplastics were incubated with gastric fluid at 15 °C in artificial seawater. Rates of hydrolysis, as determined by counter-titration with a diluted base (NaOH), was recorded for two hours. The gastric fluid was separated by anion exchange chromatography into 65 fractions. Again, three pools of fractions were tested for their hydrolytic potential with a plastic based on polylactic acid at 30°C. Enzyme assays with fluorogenic substrates were performed with each of the 65 fractions of the gastric fluid. Methylumbelliferone derivatives of fatty acid esters (MUF-butyrate, MUF-heptanoate and MUF-oleate) were used as substrates in buffer at different pH ranging from 5 to 9 and at a temperature of 25°C. The increase in fluorescence was measured with a microplate reader. Analogously, the effect of a detergent (sodium dodecyl sulfate) on the enzymatic activity was measured. All measurements were conducted under controlled laboratory conditions.
    Keywords: Binary Object; biodegradation; bioplastic; BIO-PLASTICS_EUROPE; Developing and Implementing Sustainability-Based Solutions for Bio-Based Plastic Production and Use to Preserve Land and Sea Environmental Quality in Europe; enzyme activity; esterases; File content; Helgoland; Helgoland, North Sea; Hydrolysis; Identification; invertebrates; Method comment; MULT; Multiple investigations; pH; plastic; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 224 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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