Data

Investigating the effect of silicate- and calcium-based ocean alkalinity enhancement on diatom silicification - data

Name: Investigating the effect of silicate- and calcium-based ocean alkalinity enhancement on diatom silicification - data
Published: 2023

University of Tasmania, Australia

Ferderer, Aaron

Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]

ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.25959/G3FN-HE45&rft.title=Investigating the effect of silicate- and calcium-based ocean alkalinity enhancement on diatom silicification - data&rft.identifier=10.25959/G3FN-HE45&rft.description=These files contain the data recorded from a mesocosm experiment conducted in Bergen, Norway 2022 which assessed the effect of simualted mineral-based (silicate or calcium) ocean alkalinity enhancement (OAE) on diatom silicification. Ten mesocosms were used in total, divided into two groups either the silicate- or calcium based group and alkalinity was increased by either 0, 150, 300, 450 or 600 µmol L-1 above natrually occuring levels. The PDMPO-fluorescence (an appropriate proxy for silicification) of diatoms was recorded on eight seperate days during the experiment. Accompanying data includes measured; macronutrients (nitrate, nitrite, phophate, silicate), total alkalinity, biogenic silica in the water column and sediment trap.Maintenance and Update Frequency: notPlannedStatement: Ten Kiel Off-Shore Mesocosms for Ocean Simulations (KOSMOS, M1-M10; Riebesell et al., 2013) were deployed from RV ALKOR in Raunefjorden, Bergen, Norway ~1.5 km from the Espegrend marine research field station. Mesocosms consisted of a cylindrical polyurethane bag 20 m in length, (2 m in diameter, ~60.01 ± 0.01 m3 volume). Mesocosm bags were fitted within 8 m tall floating frames and a 2 m long funnel shaped sediment trap to with the top of each mesocosm bag ~1 m above the surface. Mesocosms were split into two OAE treatment groups; a calcium-based (Ca-OAE) treatment (N =5) and silicate-based (Si-OAE) treatment (N =5). Alkalinity was enhanced along a gradient in each mineral-based treatment ranging from 0 – 600 µmol kg-1. Simulated differences in the type of OAE were established via the addition of CaCl2.2H2O in the Ca-OAE treatments and MgCl2.6H2O and Na2SiO3.5H2O in the Si-OAE treatments. Sampling of the mesocosms was conducted every second day from small boats with sediment sampling first (0800 – 1000; here and in the following GMT +2) followed by particulate and dissolved substance sampling (0900 – 1300), zooplankton sampling (1000 – 1300) and finally CTD, FastOcean APD/fluoroprobe (1400 – 1600). Cell PDMPO-fluorescence was measured using a Nikon eclipse Ci microscope equipped with a UV-1A (longpass) filter cube, Nikon DS-Ri2 camera and Mercury lamp (Nikon C-SHG1).&rft.creator=Ferderer, Aaron &rft.date=2023&rft.coverage=westlimit=5.197091; southlimit=60.26561; eastlimit=5.224729; northlimit=60.272846&rft.coverage=westlimit=5.197091; southlimit=60.26561; eastlimit=5.224729; northlimit=60.272846&rft_rights=Data, products and services from IMAS are provided as is without any warranty as to fitness for a particular purpose.&rft_rights=This dataset is the intellectual property of the University of Tasmania (UTAS) through the Institute for Marine and Antarctic Studies (IMAS).&rft_rights=&rft_rights= https://creativecommons.org/licenses/by/4.0/&rft_rights=https://licensebuttons.net/l/by/4.0/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Creative Commons Attribution 4.0 International License&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/international/&rft_rights=WWW:LINK-1.0-http--related&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=Cite data as: Ferderer, A. (2023). Investigating the effect of silicate- and calcium-based ocean alkalinity enhancement on diatom silicification - data [Data set]. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). https://doi.org/10.25959/G3FN-HE45&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0&rft_subject=oceans&rft_subject=BIOGEOCHEMICAL CYCLES&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=OCEAN CHEMISTRY&rft_subject=PHYTOPLANKTON&rft_subject=BIOSPHERE&rft_subject=AQUATIC ECOSYSTEMS&rft_subject=PLANKTON&rft_subject=CARBON DIOXIDE&rft_subject=ALKALINITY&rft_subject=EARTH SCIENCE | BIOSPHERE | ECOSYSTEMS | MARINE ECOSYSTEMS | COASTAL&rft_subject=DIATOMS&rft_subject=BIOLOGICAL CLASSIFICATION&rft_subject=PLANTS&rft_subject=MICROALGAE&rft_subject=SILICATE&rft_subject=Biological Oceanography&rft_subject=EARTH SCIENCES&rft_subject=OCEANOGRAPHY&rft.type=dataset&rft.language=English Access the data

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Cite data as: Ferderer, A. (2023). Investigating the effect of silicate- and calcium-based ocean alkalinity enhancement on diatom silicification - data [Data set]. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). https://doi.org/10.25959/G3FN-HE45

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Brief description

These files contain the data recorded from a mesocosm experiment conducted in Bergen, Norway 2022 which assessed the effect of simualted mineral-based (silicate or calcium) ocean alkalinity enhancement (OAE) on diatom silicification. Ten mesocosms were used in total, divided into two groups either the silicate- or calcium based group and alkalinity was increased by either 0, 150, 300, 450 or 600 µmol L-1 above natrually occuring levels. The PDMPO-fluorescence (an appropriate proxy for silicification) of diatoms was recorded on eight seperate days during the experiment. Accompanying data includes measured; macronutrients (nitrate, nitrite, phophate, silicate), total alkalinity, biogenic silica in the water column and sediment trap.

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Maintenance and Update Frequency: notPlanned

Statement: Ten Kiel Off-Shore Mesocosms for Ocean Simulations (KOSMOS, M1-M10; Riebesell et al., 2013) were deployed from RV ALKOR in Raunefjorden, Bergen, Norway ~1.5 km from the Espegrend marine research field station. Mesocosms consisted of a cylindrical polyurethane bag 20 m in length, (2 m in diameter, ~60.01 ± 0.01 m3 volume). Mesocosm bags were fitted within 8 m tall floating frames and a 2 m long funnel shaped sediment trap to with the top of each mesocosm bag ~1 m above the surface. Mesocosms were split into two OAE treatment groups; a calcium-based (Ca-OAE) treatment (N =5) and silicate-based (Si-OAE) treatment (N =5). Alkalinity was enhanced along a gradient in each mineral-based treatment ranging from 0 – 600 µmol kg-1. Simulated differences in the type of OAE were established via the addition of CaCl2.2H2O in the Ca-OAE treatments and MgCl2.6H2O and Na2SiO3.5H2O in the Si-OAE treatments. Sampling of the mesocosms was conducted every second day from small boats with sediment sampling first (0800 – 1000; here and in the following GMT +2) followed by particulate and dissolved substance sampling (0900 – 1300), zooplankton sampling (1000 – 1300) and finally CTD, FastOcean APD/fluoroprobe (1400 – 1600). Cell PDMPO-fluorescence was measured using a Nikon eclipse Ci microscope equipped with a UV-1A (longpass) filter cube, Nikon DS-Ri2 camera and Mercury lamp (Nikon C-SHG1).

Issued: 29 08 2023

Data time period: 2022-05-07 to 2022-07-06

This dataset is part of a larger collection

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text: westlimit=5.197091; southlimit=60.26561; eastlimit=5.224729; northlimit=60.272846

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DOI : 10.25959/G3FN-HE45
global : 2a414204-ed47-431d-bad7-a6fee9dca874