Ammonium excretion and respiration rate of tropical copepods and euphausiids measured during METEOR cruise M93, M97 and Maria S. Merian cruise MSM22
Respiration and ammonium excretion rates at different oxygen partial pressure were measured for calanoid copepods and euphausiids from the Eastern Tropical South Pacific and the Eastern Tropical North Atlantic. All specimens used for experiments were caught in the upper 400 m of the water column and...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.853919 2023-05-15T17:37:03+02:00 Ammonium excretion and respiration rate of tropical copepods and euphausiids measured during METEOR cruise M93, M97 and Maria S. Merian cruise MSM22 Kiko, Rainer Hauss, Helena Buchholz, Friedrich Melzner, Frank MEDIAN LATITUDE: 1.886526 * MEDIAN LONGITUDE: -45.854627 * SOUTH-BOUND LATITUDE: -13.949500 * WEST-BOUND LONGITUDE: -77.821333 * NORTH-BOUND LATITUDE: 18.005667 * EAST-BOUND LONGITUDE: -17.761167 * DATE/TIME START: 2012-11-04T00:17:00 * DATE/TIME END: 2013-06-20T20:48:00 2015-10-13 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.853919 https://doi.org/10.1594/PANGAEA.853919 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.853919 https://doi.org/10.1594/PANGAEA.853919 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kiko, Rainer; Hauss, Helena; Buchholz, Friedrich; Melzner, Frank (2016): Ammonium excretion and oxygen respiration of tropical copepods and euphausiids exposed to oxygen minimum zone conditions. Biogeosciences, 13(8), 2241-2255, https://doi.org/10.5194/bg-13-2241-2016 Climate - Biogeochemistry Interactions in the Tropical Ocean SFB754 Dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.853919 https://doi.org/10.5194/bg-13-2241-2016 2023-01-20T07:33:36Z Respiration and ammonium excretion rates at different oxygen partial pressure were measured for calanoid copepods and euphausiids from the Eastern Tropical South Pacific and the Eastern Tropical North Atlantic. All specimens used for experiments were caught in the upper 400 m of the water column and only animals appearing unharmed and fit were used for experiments. Specimens were sorted, identified and transferred into aquaria with filtered, well-oxygenated seawater immediately after the catch and maintained for 1 to 13 hours prior to physiological experiments at the respective experimental temperature. Maintenance and physiological experiments were conducted in darkness in temperature-controlled incubators at 11, 13 or 23 degree C (±1). Before and during experiments, animals were not fed. Respiration and ammonium excretion rate measurements (both in µmol h-1 gDW-1) at varying oxygen concentrations were conducted in 12 to 60 mL gas-tight glass bottles. These were equipped with oxygen microsensors (ø 3 mm, PreSens Precision Sensing GmbH, Regensburg, Germany) attached to the inner wall of the bottles to monitor oxygen concentrations non-invasively. Read-out of oxygen concentrations was conducted using multi-channel fiber optic oxygen transmitters (Oxy-4 and Oxy-10 mini, PreSens Precision Sensing GmbH, Regensburg, Germany) that were connected via optical fibers to the outside of the bottles directly above the oxygen microsensor spots. Measurements were started at pre-adjusted oxygen and carbon dioxide levels. For this, seawater stocks with adjusted pO2 and pCO2 were prepared by equilibrating 3 to 4 L of filtered (0.2 µm filter Whatman GFF filter) and UV - sterilized (Aqua Cristal UV C 5 Watt, JBL GmbH & Co. KG, Neuhofen, Germany) water with premixed gases (certified gas mixtures from Air Liquide) for 4 hours at the respective experimental temperature. pCO2 levels were chosen to mimic the environmental pCO2 in the ETSP OMZ or the ETNA OMZ. Experimental runs were conducted with 11 to 15 trial incubations (1 or 2 ... Dataset North Atlantic Copepods PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(-77.821333,-17.761167,18.005667,-13.949500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Climate - Biogeochemistry Interactions in the Tropical Ocean SFB754 |
spellingShingle |
Climate - Biogeochemistry Interactions in the Tropical Ocean SFB754 Kiko, Rainer Hauss, Helena Buchholz, Friedrich Melzner, Frank Ammonium excretion and respiration rate of tropical copepods and euphausiids measured during METEOR cruise M93, M97 and Maria S. Merian cruise MSM22 |
topic_facet |
Climate - Biogeochemistry Interactions in the Tropical Ocean SFB754 |
description |
Respiration and ammonium excretion rates at different oxygen partial pressure were measured for calanoid copepods and euphausiids from the Eastern Tropical South Pacific and the Eastern Tropical North Atlantic. All specimens used for experiments were caught in the upper 400 m of the water column and only animals appearing unharmed and fit were used for experiments. Specimens were sorted, identified and transferred into aquaria with filtered, well-oxygenated seawater immediately after the catch and maintained for 1 to 13 hours prior to physiological experiments at the respective experimental temperature. Maintenance and physiological experiments were conducted in darkness in temperature-controlled incubators at 11, 13 or 23 degree C (±1). Before and during experiments, animals were not fed. Respiration and ammonium excretion rate measurements (both in µmol h-1 gDW-1) at varying oxygen concentrations were conducted in 12 to 60 mL gas-tight glass bottles. These were equipped with oxygen microsensors (ø 3 mm, PreSens Precision Sensing GmbH, Regensburg, Germany) attached to the inner wall of the bottles to monitor oxygen concentrations non-invasively. Read-out of oxygen concentrations was conducted using multi-channel fiber optic oxygen transmitters (Oxy-4 and Oxy-10 mini, PreSens Precision Sensing GmbH, Regensburg, Germany) that were connected via optical fibers to the outside of the bottles directly above the oxygen microsensor spots. Measurements were started at pre-adjusted oxygen and carbon dioxide levels. For this, seawater stocks with adjusted pO2 and pCO2 were prepared by equilibrating 3 to 4 L of filtered (0.2 µm filter Whatman GFF filter) and UV - sterilized (Aqua Cristal UV C 5 Watt, JBL GmbH & Co. KG, Neuhofen, Germany) water with premixed gases (certified gas mixtures from Air Liquide) for 4 hours at the respective experimental temperature. pCO2 levels were chosen to mimic the environmental pCO2 in the ETSP OMZ or the ETNA OMZ. Experimental runs were conducted with 11 to 15 trial incubations (1 or 2 ... |
format |
Dataset |
author |
Kiko, Rainer Hauss, Helena Buchholz, Friedrich Melzner, Frank |
author_facet |
Kiko, Rainer Hauss, Helena Buchholz, Friedrich Melzner, Frank |
author_sort |
Kiko, Rainer |
title |
Ammonium excretion and respiration rate of tropical copepods and euphausiids measured during METEOR cruise M93, M97 and Maria S. Merian cruise MSM22 |
title_short |
Ammonium excretion and respiration rate of tropical copepods and euphausiids measured during METEOR cruise M93, M97 and Maria S. Merian cruise MSM22 |
title_full |
Ammonium excretion and respiration rate of tropical copepods and euphausiids measured during METEOR cruise M93, M97 and Maria S. Merian cruise MSM22 |
title_fullStr |
Ammonium excretion and respiration rate of tropical copepods and euphausiids measured during METEOR cruise M93, M97 and Maria S. Merian cruise MSM22 |
title_full_unstemmed |
Ammonium excretion and respiration rate of tropical copepods and euphausiids measured during METEOR cruise M93, M97 and Maria S. Merian cruise MSM22 |
title_sort |
ammonium excretion and respiration rate of tropical copepods and euphausiids measured during meteor cruise m93, m97 and maria s. merian cruise msm22 |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.853919 https://doi.org/10.1594/PANGAEA.853919 |
op_coverage |
MEDIAN LATITUDE: 1.886526 * MEDIAN LONGITUDE: -45.854627 * SOUTH-BOUND LATITUDE: -13.949500 * WEST-BOUND LONGITUDE: -77.821333 * NORTH-BOUND LATITUDE: 18.005667 * EAST-BOUND LONGITUDE: -17.761167 * DATE/TIME START: 2012-11-04T00:17:00 * DATE/TIME END: 2013-06-20T20:48:00 |
long_lat |
ENVELOPE(-77.821333,-17.761167,18.005667,-13.949500) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic Copepods |
genre_facet |
North Atlantic Copepods |
op_source |
Supplement to: Kiko, Rainer; Hauss, Helena; Buchholz, Friedrich; Melzner, Frank (2016): Ammonium excretion and oxygen respiration of tropical copepods and euphausiids exposed to oxygen minimum zone conditions. Biogeosciences, 13(8), 2241-2255, https://doi.org/10.5194/bg-13-2241-2016 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.853919 https://doi.org/10.1594/PANGAEA.853919 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.853919 https://doi.org/10.5194/bg-13-2241-2016 |
_version_ |
1766136770855960576 |