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  • 1
    Online Resource
    Online Resource
    Herstellung funktionalisierter Eisenoxid-Nanopartikel für die spezifische Verwendung als Kontrastmittel. (2006)
    Göttingen :Cuvillier Verlag,
    Details
    Keywords: Iron oxides--Magnetic properties. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (200 pages)
    Edition: 1st ed.
    ISBN: 9783736919563
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=5018954
    DDC: 546.62120000000004
    Language: German
    Location Call Number Limitation Availability
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    GEOMAR EBL
  • 2
    Online Resource
    Online Resource
    Report and preliminary results of R/V POSEIDON cruise POS508 : Las Palmas (Canary Islands) - Las Palmas (Canary Islands) 22.01.2017-06.02.2017 (2018)
    Bremen : MARUM - Zentrum für Marine Umweltwissenschaften, Fachbereich Geowissenschaften, Universität Bremen
    Details Availability
    Keywords: Forschungsbericht ; Mittelmeer Ost ; Schlammvulkan
    Type of Medium: Online Resource
    Pages: Online-Ressource
    Series Statement: Berichte aus dem MARUM und dem Fachbereich Geowissenschaften der Universität Bremen No. 319
    URL: http://nbn-resolving.de/urn:nbn:de:gbv:46-00106572-12
    URN: urn:nbn:de:gbv:46-00106617-14
    DDC: 550
    Language: English
    Location Call Number Limitation Availability
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    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 3
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    Testing the usefulness of optical data for zooplankton long‐term monitoring: Taxonomic composition, abundance, biomass, and size spectra from ZooScan image analysis (2022)
    John Wiley & Sons, Inc. | Hoboken, USA
    Details
    Publication Date: 2022-11-01
    Description: The pelagic ecosystem of the Arctic Ocean is threatened by severe changes such as the reduction in sea‐ice coverage and increased inflow of warmer Atlantic water. The latter is already altering the zooplankton community, highlighting the need for monitoring studies. It is therefore essential to accelerate the taxonomic identification to speed up sample analysis, and to expand the analysis to biomass and size assessments, providing data for modeling efforts. Our case study in Fram Strait illustrates that image‐based analyses with the ZooScan provide abundance data and taxonomic resolutions that are comparable to microscopic analyses and are suitable for zooplankton monitoring purposes in the Arctic. We also show that image analysis allows to differentiate developmental stages of the key species Calanus spp. and Metridia longa and, thus, to study their population dynamics. Our results emphasize that older preserved samples can be successfully reanalyzed with ZooScan. To explore the applicability of image parameters for calculating total mesozooplankton and Calanus spp. biomasses, we used (1) conversion factors (CFs) translating wet mass to dry mass (DM), and (2) length–mass (LM) relationships. For Calanus spp., the calculated biomass values yielded similar results as direct DM measurements. Total mesozooplankton biomass ranged between 1.6 and 15 (LM) or 2.4 and 21 (CF) g DM m², respectively, which corresponds to previous studies in Fram Strait. Ultimately, a normalized biomass size spectra analysis provides 1st insights into the mesozooplankton size structure at different depths, revealing steep slopes in the linear fit in communities influenced by Atlantic water inflow.
    Description: Bundesministerium für Bildung und Forschung http://dx.doi.org/10.13039/501100002347
    Keywords: ddc:577.7
    Language: English
    Type: doc-type:article
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    CITATION GEO-LEO
  • 4
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    Microplastics in zooplankton samples from the the Fram Strait and the Arctic from July 2018 and August 2019 (2022)
    PANGAEA
    Details
    Publication Date: 2023-07-11
    Description: Zooplankton (amphipod and copepod) were collected using nets in the Fram Strait and the Arctic, in July 2018 and August 2019 for microplastic analysis. Water samples were also collected from the underway system and CTD alongside the August 2019 zooplankton samples (https://doi.pangaea.de/10.1594/PANGAEA.950239). All samples were initially digested using a homogenising solution and then filtered in preparation for Fourier Transform Infrared spectroscopy (FTIR) analysis in combination with an automated polymer identification approach (SIMPLE software) to identify polymer types, shape and size. Microplastics were also visualised using a microscope to further determine shape and size, particularly of fibres. Data collected on the microplastics found includes polymer type, shape, size, species ingestion and location.
    Keywords: Amphipoda; Arctic; Bioavailability; BONGO; Bongo net; copepod; CTD/Rosette; CTD-RO; Depth, bottom/max; Depth, top/min; Event label; Fourier Transform Infrared spectroscopy (FTIR) in combination with automated polymer identification [SIMPLE software]; FRAM; Fram Strait; FRontiers in Arctic marine Monitoring; FTIR SIMPLE software; James Clark Ross; JR18007; JR18007_11; JR18007_130; JR18007_57; JR18007_97; LATITUDE; Length, maximal; Light frame on-sight keyspecies investigation; LOKI; LONGITUDE; marine litter; microplastic ingestion; Microplastics; MSN; MSN150; Multiple opening/closing net; Multiple opening/closing net, 150 µm meshsize; Number of individuals; PARCA; Particle camera; Plastic pollution; Polarstern; Polymer; PS114; PS114_4-1; PS114_4-2; PS114_4-5; PS114_4-6; PS114_46-7; PS114_46-8; PS114_4-7; PS114_4-8; PS114_4-9; PS114_9-3; PS114_9-4; PS114_9-5; Quality level; Sample ID; Size fraction; Species; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Type
    Type: Dataset
    Format: text/tab-separated-values, 704 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Microplastics in water samples from the Fram Strait and the Arctic from July 2018 and August 2019 (2022)
    PANGAEA
    Details
    Publication Date: 2023-07-11
    Description: This dataset presents microplastics in water samples collected from the underway system and CTD alongside the August 2019 zooplankton samples presented in https://doi.pangaea.de/10.1594/PANGAEA.950296. These samples were initially digested using a homogenising solution and then filtered in preparation for Fourier Transform Infrared spectroscopy (FTIR) analysis in combination with an automated polymer identification approach (SIMPLE software) to identify polymer types, shape and size. Microplastics were also visualised using a microscope to further determine shape and size, particularly of fibres. Data collected on the microplastics found includes; polymer type, shape, size, species ingestion and location.
    Keywords: Amphipoda; Arctic; Bioavailability; BONGO; Bongo net; copepod; DEPTH, water; Event label; Fourier Transform Infrared spectroscopy (FTIR) in combination with automated polymer identification [SIMPLE software]; FRAM; Fram Strait; FRontiers in Arctic marine Monitoring; FTIR SIMPLE software; James Clark Ross; JR18007; JR18007_11; JR18007_57; JR18007_60; JR18007_75; JR18007_97; LATITUDE; Length, maximal; LONGITUDE; marine litter; microplastic ingestion; Microplastics; MSN150; Multiple opening/closing net, 150 µm meshsize; Plastic pollution; Polymer; Quality level; Size fraction; Type
    Type: Dataset
    Format: text/tab-separated-values, 368 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Abundance, biovolume, biomass and length measurements of mesozooplankton from the POLARSTERN cruise PS78 (ARK-XXVI/1) (2022)
    PANGAEA
    Details
    Publication Date: 2023-11-09
    Description: Mesozooplankton samples were collected with the Multinet midi (Hydrobios, Kiel) and Bongo nets during the POLARSTERN cruise PS78 (ARK-XXVI/1) on a transect across Fram Strait. The samples were analyzed with imaged-based ZooScan analysis (Gorsky et al. 2010) and microscopic counts to compare the taxonomic resolution and abundance of both methods as described in Cornils et al. (2022). The data collection includes abundance, biovolume, biomass and length measurements derived from the image-based analysis with ZooScan as well as abundances based on microscopic counts. To compare biomass estimates from image parameters direct measurements of prosome length and individual dry mass of Calanus spp. are also provided. The data analysis is described in Cornils et al. (2022).The R scripts deposited at GitHub (Cornils 2022) allow the transformation of the EcoTaxa image dataset https://ecotaxa.obs-vlfr.fr/prj/2771 to abundance, biovolume and dry mass of the zooplankton organisms.
    Keywords: Abundance; Biomass; biovolume; Copepoda; Fram Strait; QUAntifying Rapid Climate Change in the Arctic: regional feedbackS and large-scale impacts; QUARCCS; Zooplankton
    Type: Dataset
    Format: application/zip, 7 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Length measurements from ZooScan images during POLARSTERN cruise PS78 (ARK-XXVI/1) (2022)
    PANGAEA
    Details
    Publication Date: 2023-11-09
    Keywords: Abundance; ARK-XXVI/1; Biomass; biovolume; Copepoda; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Elevation of event; Equivalent spherical diameter; Event label; Fram Strait; Image number/name; Latitude of event; Length; Longitude of event; MSN; Multiple opening/closing net; North Greenland Sea; Polarstern; PS78; PS78/019-5; PS78/025-3; PS78/035-2; PS78/039-5; PS78/044-4; PS78/054-5; PS78/071-5; PS78/075-5; PS78/127-7; QUAntifying Rapid Climate Change in the Arctic: regional feedbackS and large-scale impacts; QUARCCS; Taxon/taxa; Zooplankton; ZOOSCAN
    Type: Dataset
    Format: text/tab-separated-values, 16350 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Abundance of zooplankton from ZooScan analyses during POLARSTERN cruise PS78 (ARK-XXVI/1) (2022)
    PANGAEA
    Details
    Publication Date: 2023-11-09
    Keywords: Abundance; Aeginidae; Aetideidae; Aetideopsis rostrata, female; Aglantha digitale; Appendicularia; ARK-XXVI/1; Atolla tenella; Augaptilidae; Biomass; biovolume; Bivalvia, larvae; Botrynema spp.; Calanidae; Calanidae, c1-c3; Calanoida indeterminata, copepodites; Calanoida indeterminata, female; Calanoida indeterminata, male; Calanus hyperboreus, c4; Calanus hyperboreus, c5; Calanus hyperboreus, female; Calanus spp., c4; Calanus spp., c5; Calanus spp., female; Calanus spp., male; Chaetognatha; Chiridius obtusifrons, female; Clione limacina; Cnidaria indeterminata; Comment; Copepoda; Copepoda, nauplii; Copepoda indeterminata; Cyclocaris guilelmi; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Echinodermata, larvae; Elevation of event; Eukrohnia hamata; Euphausiacea; Event label; Fram Strait; Fritillariidae; Gaetanus brevispinus, female; Gaetanus tenuispinus, female; Harpacticoida; Heterorhabdidae, copepodites; Heterorhabdus norvegicus, female; Heterorhabdus norvegicus, male; Hymenodora glacialis; Isopoda; Lanceola clausi; Latitude of event; Limacina helicina; Longitude of event; Lucicutiidae; Metridia longa; Metridia longa, c1-c3; Metridia longa, c4; Metridia longa, c5; Metridia longa, female; Metridia longa, male; Metridia lucens; Microcalanus spp.; Mormonilloida; MSN; Multiple opening/closing net; Mysida; North Greenland Sea; Oikopleuridae; Oithonidae; Oncaeidae; Ostracoda; Paraeuchaeta spp., copepodites; Paraeuchaeta spp., female; Paraeuchaeta spp., male; Paraheterorhabdus compactus, female; Parasagitta elegans; Pelagobia cf. longicirrata; Pleuromamma sp.; Polarstern; Polychaeta, larvae; PS78; PS78/019-5; PS78/025-3; PS78/035-2; PS78/039-5; PS78/044-4; PS78/054-5; PS78/071-5; PS78/075-5; PS78/127-7; Pseudocalanus spp., copepodites; Pseudocalanus spp., female; Pseudocalanus spp., male; Pseudochirella spectabilis; QUAntifying Rapid Climate Change in the Arctic: regional feedbackS and large-scale impacts; QUARCCS; Rhabdoon reesi; Scaphocalanus magnus; Scaphocalanus magnus, female; Scaphocalanus spp., copepodites; Scaphocalanus spp., female; Scaphocalanus spp., male; Scolecithricella minor; Scolecitrichopsis polaris; Siphonophorae; Sminthea spp.; Solmundella bitentaculata; Spinocalanus antarcticus; Spinocalanus antarcticus, female; Spinocalanus elongatus, female; Spinocalanus longicornis, female; Spinocalanus longispinus, female; Spinocalanus spp., copepodites; Spinocalanus spp., male; Temorites brevis; Temorites brevis, female; Tharybis sp., copepodites; Tharybis sp., female; Themisto abyssorum; Themisto libellula; Tomopteris sp.; Typhloscolex cf. muelleri; Zooplankton; ZOOSCAN
    Type: Dataset
    Format: text/tab-separated-values, 4455 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    Abundance of zooplankton from microscopic analyses during POLARSTERN cruise PS78 (ARK-XXVI/1) (2022)
    PANGAEA
    Details
    Publication Date: 2023-11-09
    Keywords: Abundance; Aeginidae; Aetideidae; Aetideopsis minor, female; Aetideopsis rostrata, female; Aglantha digitale; Amphipoda; Appendicularia; ARK-XXVI/1; Atolla tenella; Augaptilidae; Biomass; biovolume; Bivalvia, larvae; Botrynema spp.; Calanidae; Calanidae, c1-c3; Calanoida indeterminata, copepodites; Calanoida indeterminata, female; Calanoida indeterminata, male; Calanus hyperboreus, c4; Calanus hyperboreus, c5; Calanus hyperboreus, female; Calanus spp., c4; Calanus spp., c5; Calanus spp., female; Calanus spp., male; Chaetognatha; Chiridius obtusifrons, female; Clione limacina; Cnidaria indeterminata; Comment; Copepoda; Copepoda, nauplii; Copepoda indeterminata; Crustacea, larvae; Ctenophora; Cyclocaris guilelmi; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Discoidae; Echinodermata, larvae; Elevation of event; Eukrohnia hamata; Euphausiacea; Event label; Fram Strait; Fritillariidae; Gaetanus brevispinus, female; Gaetanus tenuispinus, female; Harpacticoida; Heterorhabdidae, copepodites; Heterorhabdus norvegicus, female; Heterorhabdus norvegicus, male; Hymenodora glacialis; Isopoda; Lanceola clausi; Latitude of event; Limacina helicina; Longitude of event; Lucicutiidae; Meganyctiphanes norvegica; Metridia longa; Metridia longa, c1-c3; Metridia longa, c4; Metridia longa, c5; Metridia longa, female; Metridia longa, male; Metridia lucens; Microcalanus spp.; Mormonilloida; MSN; Multiple opening/closing net; Mysida; North Greenland Sea; Oikopleuridae; Oithonidae; Oncaeidae; Ostracoda; Paraeuchaeta spp., copepodites; Paraeuchaeta spp., female; Paraeuchaeta spp., male; Paraheterorhabdus compactus, female; Paraheterorhabdus compactus, male; Parasagitta elegans; Pelagobia cf. longicirrata; Pleuromamma sp.; Polarstern; Polychaeta, larvae; PS78; PS78/039-5; PS78/044-4; PS78/054-5; PS78/071-5; PS78/075-5; PS78/127-7; Pseudocalanus spp., copepodites; Pseudocalanus spp., female; Pseudocalanus spp., male; Pseudochirella spectabilis; QUAntifying Rapid Climate Change in the Arctic: regional feedbackS and large-scale impacts; QUARCCS; Rhabdoon reesi; Rhincalanidae; Scaphocalanus magnus; Scaphocalanus magnus, female; Scaphocalanus spp., copepodites; Scaphocalanus spp., female; Scaphocalanus spp., male; Scolecithricella minor; Scolecitrichopsis polaris; Siphonophorae; Sminthea spp.; Solmundella bitentaculata; Spinocalanus antarcticus; Spinocalanus antarcticus, female; Spinocalanus elongatus, female; Spinocalanus longicornis, female; Spinocalanus longispinus, female; Spinocalanus polaris; Spinocalanus spp., copepodites; Spinocalanus spp., male; Stereo Microscope; Temorites brevis; Temorites brevis, female; Tharybis sp., copepodites; Tharybis sp., female; Themisto abyssorum; Themisto libellula; Thysanoessa spp.; Tomopteris sp.; Typhloscolex cf. muelleri; Undinella oblonga; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 3300 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Prosome length and dry mass of Calanus finmarchicus, Calanus glacialis and Calanus hyperboreus during POLARSTERN cruise PS78 (ARK-XXVI/1) (2022)
    PANGAEA
    Details
    Publication Date: 2023-11-09
    Keywords: Abundance; ARK-XXVI/1; Biomass; biovolume; BONGO; Bongo net; Comment; Copepoda; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Elevation of event; Event label; Fram Strait; Individual dry mass; Latitude of event; Longitude of event; North Greenland Sea; Polarstern; Prosome, length; PS78; PS78/019-7; PS78/025-7; PS78/035-4; PS78/039-2; PS78/044-3; PS78/054-2; PS78/071-6; PS78/075-6; PS78/127-4; QUAntifying Rapid Climate Change in the Arctic: regional feedbackS and large-scale impacts; QUARCCS; Stereo Microscope; Taxon/taxa; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 2308 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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