GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Document type
Keywords
Language
Years
  • 1
    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
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    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
    BibTip Others were also interested in ...
  • 3
    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
    BibTip Others were also interested in ...
  • 4
    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
    BibTip Others were also interested in ...
  • 5
    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
    BibTip Others were also interested in ...
  • 6
    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
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2024-03-01
    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, biovolume; Comment; Copepoda; Copepoda, indeterminata; 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
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2024-03-01
    Keywords: Abundance; Aeginidae, biomass as dry weight; Aetideidae, biomass as dry weight; Aetideopsis rostrata, female, biomass as dry weight; Aglantha digitale, biomass as dry weight; Appendicularia, biomass as dry weight; ARK-XXVI/1; Atolla tenella, biomass as dry weight; Augaptilidae, biomass as dry weight; Biomass; biovolume; Bivalvia, larvae, biomass as dry weight; Botrynema spp., biomass as dry weight; Calanidae, biomass as dry weight; Calanidae, c1-c3, biomass as dry weight; Calanoida indeterminata, copepodites, biomass as dry weight; Calanoida indeterminata, female, biomass as dry weight; Calanoida indeterminata, male, biomass as dry weight; Calanus hyperboreus, c4, biomass as dry weight; Calanus hyperboreus, c5, biomass as dry weight; Calanus hyperboreus, female, biomass as dry weight; Calanus spp., c4, biomass as dry weight; Calanus spp., c5, biomass as dry weight; Calanus spp., female, biomass as dry weight; Calanus spp., male, biomass as dry weight; Chaetognatha, biomass as dry weight; Chiridius obtusifrons, female, biomass as dry weight; Clione limacina, biomass as dry weight; Cnidaria indeterminata, biomass as dry weight; Comment; Copepoda; Copepoda, indeterminata, biomass as dry weight; Copepoda, nauplii, biomass as dry weight; Copepoda indeterminata, biomass as dry weight; Cyclocaris guilelmi, biomass as dry weight; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Echinodermata, larvae, biomass as dry weight; Elevation of event; Eukrohnia hamata, biomass as dry weight; Euphausiacea, biomass as dry weight; Event label; Fram Strait; Fritillariidae, biomass as dry weight; Gaetanus brevispinus, female, biomass as dry weight; Gaetanus tenuispinus, female, biomass as dry weight; Harpacticoida, biomass as dry weight; Heterorhabdidae, copepodites, biomass as dry weight; Heterorhabdus norvegicus, female, biomass as dry weight; Heterorhabdus norvegicus, male, biomass as dry weight; Hymenodora glacialis, biomass as dry weight; Isopoda, biomass as dry weight; Lanceola clausi, biomass as dry weight; Latitude of event; Limacina helicina, biomass as dry weight; Longitude of event; Lucicutiidae, biomass as dry weight; Metridia longa, biomass as dry weight; Metridia longa, c1-c3, biomass as dry weight; Metridia longa, c4, biomass as dry weight; Metridia longa, c5, biomass as dry weight; Metridia longa, female, biomass as dry weight; Metridia longa, male, biomass as dry weight; Metridia lucens, biomass as dry weight; Microcalanus spp., biomass as dry weight; Mormonilloida, biomass as dry weight; MSN; Multiple opening/closing net; Mysida, biomass as dry weight; North Greenland Sea; Oikopleuridae, biomass as dry weight; Oithonidae, biomass as dry weight; Oncaeidae, biomass as dry weight; Ostracoda, biomass as dry weight; Paraeuchaeta spp., copepodites, biomass as dry weight; Paraeuchaeta spp., female, biomass as dry weight; Paraeuchaeta spp., male, biomass as dry weight; Paraheterorhabdus compactus, female, biomass as dry weight; Parasagitta elegans, biomass as dry weight; Pelagobia cf. longicirrata, biomass as dry weight; Pleuromamma sp., biomass as dry weight; Polarstern; Polychaeta, larvae, biomass as dry weight; 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, biomass as dry weight; Pseudocalanus spp., female, biomass as dry weight; Pseudocalanus spp., male, biomass as dry weight; Pseudochirella spectabilis, biomass as dry weight; QUAntifying Rapid Climate Change in the Arctic: regional feedbackS and large-scale impacts; QUARCCS; Rhabdoon reesi, biomass as dry weight; Scaphocalanus magnus, biomass as dry weight; Scaphocalanus magnus, female, biomass as dry weight; Scaphocalanus spp., copepodites, biomass as dry weight; Scaphocalanus spp., female, biomass as dry weight; Scaphocalanus spp., male, biomass as dry weight; Scolecithricella minor, biomass as dry weight; Scolecitrichopsis polaris, biomass as dry weight; Siphonophorae, biomass as dry weight; Sminthea spp., biomass as dry weight; Solmundella bitentaculata, biomass as dry weight; Spinocalanus antarcticus, biomass as dry weight; Spinocalanus antarcticus, female, biomass as dry weight; Spinocalanus elongatus, female, biomass as dry weight; Spinocalanus longicornis, female, biomass as dry weight; Spinocalanus longispinus, female, biomass as dry weight; Spinocalanus spp., copepodites, biomass as dry weight; Spinocalanus spp., male, biomass as dry weight; Temorites brevis, biomass as dry weight; Temorites brevis, female, biomass as dry weight; Tharybis sp., copepodites, biomass as dry weight; Tharybis sp. female, biomass as dry weight; Themisto abyssorum, biomass as dry weight; Themisto libellula, biomass as dry weight; Tomopteris sp., biomass as dry weight; Typhloscolex cf. muelleri, biomass as dry weight; Zooplankton; ZOOSCAN
    Type: Dataset
    Format: text/tab-separated-values, 4455 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2024-03-01
    Keywords: Abundance; Aeginidae, biomass as dry weight; Aetideidae, biomass as dry weight; Aetideopsis rostrata, female, biomass as dry weight; Aglantha digitale, biomass as dry weight; Appendicularia, biomass as dry weight; ARK-XXVI/1; Atolla tenella, biomass as dry weight; Augaptilidae, biomass as dry weight; Biomass; biovolume; Bivalvia, larvae, biomass as dry weight; Botrynema spp., biomass as dry weight; Calanidae, biomass as dry weight; Calanidae, c1-c3, biomass as dry weight; Calanoida indeterminata, copepodites, biomass as dry weight; Calanoida indeterminata, female, biomass as dry weight; Calanoida indeterminata, male, biomass as dry weight; Calanus hyperboreus, c4, biomass as dry weight; Calanus hyperboreus, c5, biomass as dry weight; Calanus hyperboreus, female, biomass as dry weight; Calanus spp., c4, biomass as dry weight; Calanus spp., c5, biomass as dry weight; Calanus spp., female, biomass as dry weight; Calanus spp., male, biomass as dry weight; Chaetognatha, biomass as dry weight; Chiridius obtusifrons, female, biomass as dry weight; Clione limacina, biomass as dry weight; Cnidaria indeterminata, biomass as dry weight; Comment; Copepoda; Copepoda, indeterminata, biomass as dry weight; Copepoda, nauplii, biomass as dry weight; Copepoda indeterminata, biomass as dry weight; Cyclocaris guilelmi, biomass as dry weight; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Echinodermata, larvae, biomass as dry weight; Elevation of event; Eukrohnia hamata, biomass as dry weight; Euphausiacea, biomass as dry weight; Event label; Fram Strait; Fritillariidae, biomass as dry weight; Gaetanus brevispinus, female, biomass as dry weight; Gaetanus tenuispinus, female, biomass as dry weight; Harpacticoida, biomass as dry weight; Heterorhabdidae, copepodites, biomass as dry weight; Heterorhabdus norvegicus, female, biomass as dry weight; Heterorhabdus norvegicus, male, biomass as dry weight; Hymenodora glacialis, biomass as dry weight; Isopoda, biomass as dry weight; Lanceola clausi, biomass as dry weight; Latitude of event; Limacina helicina, biomass as dry weight; Longitude of event; Lucicutiidae, biomass as dry weight; Metridia longa, biomass as dry weight; Metridia longa, c1-c3, biomass as dry weight; Metridia longa, c4, biomass as dry weight; Metridia longa, c5, biomass as dry weight; Metridia longa, female, biomass as dry weight; Metridia longa, male, biomass as dry weight; Metridia lucens, biomass as dry weight; Microcalanus spp., biomass as dry weight; Mormonilloida, biomass as dry weight; MSN; Multiple opening/closing net; Mysida, biomass as dry weight; North Greenland Sea; Oikopleuridae, biomass as dry weight; Oithonidae, biomass as dry weight; Oncaeidae, biomass as dry weight; Ostracoda, biomass as dry weight; Paraeuchaeta spp., copepodites, biomass as dry weight; Paraeuchaeta spp., female, biomass as dry weight; Paraeuchaeta spp., male, biomass as dry weight; Paraheterorhabdus compactus, female, biomass as dry weight; Parasagitta elegans, biomass as dry weight; Pelagobia cf. longicirrata, biomass as dry weight; Pleuromamma sp., biomass as dry weight; Polarstern; Polychaeta, larvae, biomass as dry weight; 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, biomass as dry weight; Pseudocalanus spp., female, biomass as dry weight; Pseudocalanus spp., male, biomass as dry weight; Pseudochirella spectabilis, biomass as dry weight; QUAntifying Rapid Climate Change in the Arctic: regional feedbackS and large-scale impacts; QUARCCS; Rhabdoon reesi, biomass as dry weight; Scaphocalanus magnus, biomass as dry weight; Scaphocalanus magnus, female, biomass as dry weight; Scaphocalanus spp., copepodites, biomass as dry weight; Scaphocalanus spp., female, biomass as dry weight; Scaphocalanus spp., male, biomass as dry weight; Scolecithricella minor, biomass as dry weight; Scolecitrichopsis polaris, biomass as dry weight; Siphonophorae, biomass as dry weight; Sminthea spp., biomass as dry weight; Solmundella bitentaculata, biomass as dry weight; Spinocalanus antarcticus, biomass as dry weight; Spinocalanus antarcticus, female, biomass as dry weight; Spinocalanus elongatus, female, biomass as dry weight; Spinocalanus longicornis, female, biomass as dry weight; Spinocalanus longispinus, female, biomass as dry weight; Spinocalanus spp., copepodites, biomass as dry weight; Spinocalanus spp., male, biomass as dry weight; Temorites brevis, biomass as dry weight; Temorites brevis, female, biomass as dry weight; Tharybis sp., copepodites, biomass as dry weight; Tharybis sp. female, biomass as dry weight; Themisto abyssorum, biomass as dry weight; Themisto libellula, biomass as dry weight; Tomopteris sp., biomass as dry weight; Typhloscolex cf. muelleri, biomass as dry weight; Zooplankton; ZOOSCAN
    Type: Dataset
    Format: text/tab-separated-values, 1870 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2022-06-22
    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 m−2, 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.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...