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  • 1
    Keywords: Hochschulschrift
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (65 Seiten = 6 MB) , Illustrationen, Graphen, Karten
    Edition: 2021
    Language: English
    Note: Zusammenfassung in deutscher und englischer Sprache
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  • 2
    Publication Date: 2023-04-14
    Description: These datasets comprise data obtained during a 42 week-long exposure experiment of Mytilus spp. to two types of microplastics, namely spherical polystyrene (PS) particles and irregular polyvinylchloride (PVC) particles. This data was obtained from January 2018 to January 2019 from juvenile blue mussels with an initial size of 10mm. We recorded growth via shell length, body condition index, byssus thread production in 24 hours and clearance rate of the food algae R. baltica. Growth was measured every six weeks already during a three months acclimation period without exposure to microplastics, while byssus thread production and clearance rate were measured every six weeks only during microplastic exposure. Body condition index was measured two times, at week 16 and 32, while oxidative stress in the form of Malondialdehyde (MDA) concentrations and Superoxide (SOD) activity was only measured once at the end of the experiment. Mussels were exposed to three concentrations of PS (15, 1500, 15 000 particles/individual/week) and five concentrations of PVC (15, 1500, 15 000, 150 000 and 1 500 000 particles/individual/week) and one group to no particles at all as control.
    Keywords: blue mussels; effects; GEOMAR_Pier_Mytilus; HAND; irregular; Kiel Fjord; Microplastic; Mytilus; PS; PVC; Sampling by hand; spherical
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 3
    Publication Date: 2023-03-27
    Description: Adult blue mussels (Mytilus spp.) were exposed to microplastic particles in a controlled laboratory experiment. The effect of PS beads on the filtration was assessed by measuring the clearance rates. Clearance rate of the food algae Rhodomonas baltica was measured during the first hour of exposure and standardized by shell length. Since the reproductive status of the mussels can have an influence on the feeding activity, this factor was taken into account. Therefore, the mussels were inspected for the presence or absence of gonads at the end of the experiment. This resulted in four different treatment groups: control group with or without gonads and the microplastic-exposed group with or without gonads. Presence of PS beads and the reproductive status had a significant influence on the clearance rates.
    Keywords: Algae abundance; blue mussels; Calculated after Coughlan (1969); Clearance rate per shell length; Coulter counter, Beckman Coulter, Multisizer 3; Counting, microscope; Dry mass; effects; Experimental treatment; fate; GEOMAR_Pier_Mytilus-spp.; HAND; Identification; Microplastic; Microplastic particle concentration; Mytilus spp.; PS; Reproduction; Sampling by hand; Season; Shell length; Species
    Type: Dataset
    Format: text/tab-separated-values, 500 data points
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  • 4
    Publication Date: 2023-01-30
    Description: This dataset comprises data obtained during a 6 week-long exposure experiment of mussels of the family Mytilidae to two types of microplastics, namely polymethyl methacrylate (PMMA) and polyvinylchloride (PVC) particles and two types of natural inorganic microparticles, namely diatoms and red clay. This data was obtained from May to September 2019 in five different bioregions, which are Tasmania, Chile, Japan, Cabo Verde and Israel. We recorded body condition index, byssus thread production in 24 hours, clearance rate of the food algae and respiration rate at the end of six weeks of exposure to the four different microparticles (with an exception of the groups exposed to PVC and red clay in Tasmania, which lasted 5 weeks). Mussels were exposed to three concentrations of each particle type, which were 1.5, 15 and 150 mg/l and one group to no particles at all as control.
    Keywords: Area/locality; Byssus production per individual; Clearance rate; Dry mass; GAME; Global Approach by Modular Experiments; Microplastics; Mytilidae; natural microparticles; Particle concentration; Respiration rate, oxygen; seston; Shell, mass; Shell length; Species; Status; Survival; Temperature, water, annual mean; Treatment; Wet mass
    Type: Dataset
    Format: text/tab-separated-values, 9377 data points
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  • 5
    Publication Date: 2023-01-30
    Description: Adult blue mussels (Mytilus spp.) were exposed to microplastic particles in a controlled laboratory experiment. The number of PS beads in the softbody of the mussels was determined after the exposure phase of 2 hours and after a 48 hours depuration phase in filtered sea water. Depuration in clear water lowered the amount of microplastic in the mussels' softbodies significantly.
    Keywords: blue mussels; Counting, microscope; effects; Experimental treatment; fate; GEOMAR_Pier_Mytilus-spp.; HAND; Identification; Microplastic; Microplastic particle concentration; Microplastic particles; Mytilus spp.; PS; Recovery; Sampling by hand; Species; Time in hours
    Type: Dataset
    Format: text/tab-separated-values, 56 data points
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  • 6
    Publication Date: 2023-01-30
    Description: Adult blue mussels (Mytilus spp.) were exposed to microplastic particles in a controlled laboratory experiment. Feces was collected after the exposure phase of 2 hours and after 24 and 48 hours of depuration in filtered sea water and the amount of PS beads was determined.
    Keywords: blue mussels; Counting, microscope; effects; fate; GEOMAR_Pier_Mytilus-spp.; HAND; Identification; Microplastic; Microplastic particle concentration; Microplastic particles; Mytilus spp.; PS; Recovery; Reproduction; Sampling by hand; Species; Time in hours
    Type: Dataset
    Format: text/tab-separated-values, 84 data points
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  • 7
    Publication Date: 2023-01-30
    Description: Adult blue mussels (Mytilus spp.) were exposed to microplastic particles in a controlled laboratory experiment. The fate of PS beads within the experimental set up was assessed in four compartments (exposure water, depuration water, feces, softbody) after 2 hours of exposure, 24 hours and 48 hours of depuration in filtered sea water. Additionally, the loss of microplastic as the difference of the sum of all recovered PS beads and the measured concentration at the start of the experiment was determined to obtain a complete mass balance. The total number of PS beads and the number of PS beads per unit as well as the percentage recovery is given.
    Keywords: blue mussels; Calculated after Coughlan (1969); Clearance rate per shell length; Counting, microscope; effects; Experimental treatment; fate; GEOMAR_Pier_Mytilus-spp.; HAND; Identification; Microplastic; Microplastic particle concentration; Microplastic particles; Mytilus spp.; PS; Recovery; Sampling by hand; Shell length; Species; Time in hours; Time point, descriptive; Type
    Type: Dataset
    Format: text/tab-separated-values, 632 data points
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  • 8
    Publication Date: 2023-02-12
    Description: Adult blue mussels (Mytilus spp.) were exposed to microplastic particles in a controlled laboratory experiment. During the first hour of exposure the decrease of particles (algae or PS beads) was recorded every 15 min. The particle concentration is given in particles per milliliter and as a percentage of the starting concentration.
    Keywords: blue mussels; Counting, microscope; effects; fate; GEOMAR_Pier_Mytilus-spp.; HAND; Identification; Microplastic; Mytilus spp.; Number percentage; Particle concentration; PS; Sample type; Sampling by hand; Species; Time in minutes
    Type: Dataset
    Format: text/tab-separated-values, 480 data points
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  • 9
    Publication Date: 2023-07-18
    Description: Adult blue mussels (Mytilus spp.) were exposed to microplastic particles in a controlled laboratory experiment. A significant loss of PS beads in pilot studies was traced back to the aeration of the exposure units. Therefore, the aeration was paused during the exposure phase of 2 hours. In a pilot study, the oxygen saturation was measured over 2 hours with mixing every 20 min in four treatment groups: with or without mussel in an aerated or non-aerated (static) set-up. Oxygen saturation lowered to 96.0 % (equivalent to 9.6 mg O2/ml) at the end of the 2 hours of exposure in the non-aerated set-up with mussels due to their respiration.
    Keywords: blue mussels; effects; fate; GEOMAR_Pier_Mytilus-spp.; HAND; Identification; Laboratory experiment; Microplastic; Mytilus spp.; Oxygen; Oxygen saturation; PS; Sampling by hand; Temperature, water; Time in minutes; Treatment; WTW Oxi 23105 probe
    Type: Dataset
    Format: text/tab-separated-values, 912 data points
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  • 10
    Publication Date: 2023-07-18
    Description: Adult blue mussels (Mytilus spp.) were exposed to microplastic particles in a controlled laboratory experiment. The study was conducted to investigate I) the effect of polystyrene particles (spherical PS beads, 40µm) on the filtration of mussels and II) the fate of PS beads within the experimental set up. The data was obtained in May and June 2019 with mussels collected from the Kiel Fjord, Germany. The mussels were exposed in a closed system to an intended initial microplastic concentration of 0.4 and 40 PS beads/ml. To correct for deviations from these two concentrations, the measured PS bead concentrations were used. Mussels were exposed to microplastic for 2 hours, followed by a 48 hours depuration phase in filtered sea water. Clearance rate of the food algae Rhodomonas baltica was measured during the first hour of exposure. The fate of PS beads was determined after exposure and after depuration in four compartments: exposure water, feces, softbody, depuration water. Additionally, the loss of microplastic was determined to obtain a complete mass balance.
    Keywords: blue mussels; effects; fate; Microplastic; Mytilus spp.; PS
    Type: Dataset
    Format: application/zip, 6 datasets
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