Taxa specific meiofauna density in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85)
Values were originally given per 10 cm**2 (rounded to 1 decimal place) and were recalculated to m**2 by multiplying by 1000.During PS85 (in 2014) bacteria density, meiofauna density, macrofauna density and macrofauna biomass was determined. For the bacterial density determination, sediment subsample...
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PANGAEA - Data Publisher for Earth & Environmental Science
2018
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Online Access: | https://dx.doi.org/10.1594/pangaea.884649 https://doi.pangaea.de/10.1594/PANGAEA.884649 |
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ftdatacite:10.1594/pangaea.884649 2023-05-15T16:18:08+02:00 Taxa specific meiofauna density in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85) Braeckman, Ulrike Hoffmann, Ralf 2018 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.884649 https://doi.pangaea.de/10.1594/PANGAEA.884649 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1594/pangaea.883410 Creative Commons Attribution Non Commercial 3.0 Unported https://creativecommons.org/licenses/by-nc/3.0/legalcode cc-by-nc-3.0 CC-BY-NC Event label Date/Time of event Latitude of event Longitude of event Elevation of event Station label DEPTH, sediment/rock Copepoda Kinorhyncha Nauplii Nematoda Ostracoda Polychaeta Porifera Priapulida Sipuncula Multicorer with television MultiCorer Bottom lander, chamber PS85 Polarstern Long-term Investigation at AWI-Hausgarten off Svalbard Hausgarten dataset Dataset 2018 ftdatacite https://doi.org/10.1594/pangaea.884649 https://doi.org/10.1594/pangaea.883410 2021-11-05T12:55:41Z Values were originally given per 10 cm**2 (rounded to 1 decimal place) and were recalculated to m**2 by multiplying by 1000.During PS85 (in 2014) bacteria density, meiofauna density, macrofauna density and macrofauna biomass was determined. For the bacterial density determination, sediment subsamples were taken with modified syringes (1.17 cm² cross-sectional area) from MUC recovered sediment cores and from benthic chambers. The first centimetre of each sample was stored in a 2 % filtered formalin solution at 4 °C. The acridine orange direct count (AODC) method (Hobbie et al., 1977) was used to stain bacteria in the subsamples and subsequently bacteria were counted with a microscope (Axioskop 50, Zeiss) under UV-light (CQ-HXP-120, LEj, Germany). For the determination of the meiofauna density and identification of meiofauna taxa, sediment subsamples were taken with modified syringes (3.14 cm² cross-sectional area) from MUC recovered sediment cores. The first centimetre of each sample was stored in borax buffered 4 % formaldehyde solution at 4 °C. The samples were sieved over a 1000 µm and 32 µm mesh. Both fractions were centrifuged three times in a colloidal silica solution (Ludox TM-50) with a density of 1.18 g/cm³ and stained with Rose 20 Bengal (Heip et al., 1985). Afterwards, the taxa were identified and counted. Foraminifera are not considered, as the extraction efficiency of Ludox for different groups of foraminifera is insufficient for a quantitative assessment of the group. Therefore, only metazoan meiofauna is recorded. After taking subsamples for bacteria and meiofauna densities, the remaining sediment from MUC recovered sediment cores and from the benthic chambers was used for macrofauna taxonomical identification, and density and biomass determination. For these macrofauna analyses only the 0-5 cm horizon from MUC sediment cores and the entire remaining sediment from the benthic chambers was used, sieved over a 500 µm mesh and stored in borax buffered 4 % formaldehyde and stained with Rose Bengal (Heip et al., 1985). Afterwards, macrofauna taxa were identified to the highest taxonomic level, counted and weighted (blotted wet weight). Dataset Fram Strait Svalbard DataCite Metadata Store (German National Library of Science and Technology) Svalbard |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Event label Date/Time of event Latitude of event Longitude of event Elevation of event Station label DEPTH, sediment/rock Copepoda Kinorhyncha Nauplii Nematoda Ostracoda Polychaeta Porifera Priapulida Sipuncula Multicorer with television MultiCorer Bottom lander, chamber PS85 Polarstern Long-term Investigation at AWI-Hausgarten off Svalbard Hausgarten |
spellingShingle |
Event label Date/Time of event Latitude of event Longitude of event Elevation of event Station label DEPTH, sediment/rock Copepoda Kinorhyncha Nauplii Nematoda Ostracoda Polychaeta Porifera Priapulida Sipuncula Multicorer with television MultiCorer Bottom lander, chamber PS85 Polarstern Long-term Investigation at AWI-Hausgarten off Svalbard Hausgarten Braeckman, Ulrike Hoffmann, Ralf Taxa specific meiofauna density in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85) |
topic_facet |
Event label Date/Time of event Latitude of event Longitude of event Elevation of event Station label DEPTH, sediment/rock Copepoda Kinorhyncha Nauplii Nematoda Ostracoda Polychaeta Porifera Priapulida Sipuncula Multicorer with television MultiCorer Bottom lander, chamber PS85 Polarstern Long-term Investigation at AWI-Hausgarten off Svalbard Hausgarten |
description |
Values were originally given per 10 cm**2 (rounded to 1 decimal place) and were recalculated to m**2 by multiplying by 1000.During PS85 (in 2014) bacteria density, meiofauna density, macrofauna density and macrofauna biomass was determined. For the bacterial density determination, sediment subsamples were taken with modified syringes (1.17 cm² cross-sectional area) from MUC recovered sediment cores and from benthic chambers. The first centimetre of each sample was stored in a 2 % filtered formalin solution at 4 °C. The acridine orange direct count (AODC) method (Hobbie et al., 1977) was used to stain bacteria in the subsamples and subsequently bacteria were counted with a microscope (Axioskop 50, Zeiss) under UV-light (CQ-HXP-120, LEj, Germany). For the determination of the meiofauna density and identification of meiofauna taxa, sediment subsamples were taken with modified syringes (3.14 cm² cross-sectional area) from MUC recovered sediment cores. The first centimetre of each sample was stored in borax buffered 4 % formaldehyde solution at 4 °C. The samples were sieved over a 1000 µm and 32 µm mesh. Both fractions were centrifuged three times in a colloidal silica solution (Ludox TM-50) with a density of 1.18 g/cm³ and stained with Rose 20 Bengal (Heip et al., 1985). Afterwards, the taxa were identified and counted. Foraminifera are not considered, as the extraction efficiency of Ludox for different groups of foraminifera is insufficient for a quantitative assessment of the group. Therefore, only metazoan meiofauna is recorded. After taking subsamples for bacteria and meiofauna densities, the remaining sediment from MUC recovered sediment cores and from the benthic chambers was used for macrofauna taxonomical identification, and density and biomass determination. For these macrofauna analyses only the 0-5 cm horizon from MUC sediment cores and the entire remaining sediment from the benthic chambers was used, sieved over a 500 µm mesh and stored in borax buffered 4 % formaldehyde and stained with Rose Bengal (Heip et al., 1985). Afterwards, macrofauna taxa were identified to the highest taxonomic level, counted and weighted (blotted wet weight). |
format |
Dataset |
author |
Braeckman, Ulrike Hoffmann, Ralf |
author_facet |
Braeckman, Ulrike Hoffmann, Ralf |
author_sort |
Braeckman, Ulrike |
title |
Taxa specific meiofauna density in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85) |
title_short |
Taxa specific meiofauna density in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85) |
title_full |
Taxa specific meiofauna density in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85) |
title_fullStr |
Taxa specific meiofauna density in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85) |
title_full_unstemmed |
Taxa specific meiofauna density in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85) |
title_sort |
taxa specific meiofauna density in the hausgarten area (fram strait) in 2014 (polarstern cruise ps85) |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2018 |
url |
https://dx.doi.org/10.1594/pangaea.884649 https://doi.pangaea.de/10.1594/PANGAEA.884649 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Fram Strait Svalbard |
genre_facet |
Fram Strait Svalbard |
op_relation |
https://dx.doi.org/10.1594/pangaea.883410 |
op_rights |
Creative Commons Attribution Non Commercial 3.0 Unported https://creativecommons.org/licenses/by-nc/3.0/legalcode cc-by-nc-3.0 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1594/pangaea.884649 https://doi.org/10.1594/pangaea.883410 |
_version_ |
1766004273397628928 |