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

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.

Simple

Identification info

Date (Publication)
2023-08-29T00:00:00
Citation identifier
doi:10.25959/G3FN-HE45

Title
Information and documentation - Digital object identifier system
Date (Publication)
2023-08-29
Citation identifier
ISO 26324:2012

Citation identifier
https://doi.org/10.25959/G3FN-HE45

Resource provider

Institute for Marine and Antarctic Studies (IMAS)
Private Bag 129
Hobart
Tasmania
7001
Australia

Principal investigator

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Ferderer, Aaron
Private Bag 129
Hobart
TAS
7001
Australia
ORCID ID >

Status
Completed

Principal investigator

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Ferderer, Aaron
Hobart
TAS
7001
Australia
ORCID ID >

Topic category
  • Oceans

Extent

N
S
E
W


Temporal extent

Time period
2022-05-07 2022-07-06
Maintenance and update frequency
Not planned
Global Change Master Directory Earth Science Keywords, Version 8.5
Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research

Resource constraints

Use limitation
Data, products and services from IMAS are provided "as is" without any warranty as to fitness for a particular purpose.

Resource constraints

Other constraints
This dataset is the intellectual property of the University of Tasmania (UTAS) through the Institute for Marine and Antarctic Studies (IMAS).

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Linkage
https://licensebuttons.net/l/by/4.0/88x31.png

License Graphic

Title
Creative Commons Attribution 4.0 International License
Alternate title
CC-BY
Edition
4.0


>

Website
https://creativecommons.org/licenses/by/4.0/

License Text

Other constraints
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
Language
English
Character encoding
UTF8

Content Information

Content type
Physical measurement

Distribution Information

Distribution format
  • Microsoft excel

OnLine resource
DATA ACCESS - browse and download available files

Resource lineage

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).
Hierarchy level
Dataset
Hierarchy level
Dataset

Metadata

Metadata identifier
urn:uuid/2a414204-ed47-431d-bad7-a6fee9dca874

Language
English
Character encoding
UTF8

Distributor

IMAS Data Manager - Data Officer
Institute for Marine and Antarctic Studies
Private Bag 129
Hobart
Tasmania
7001
Australia
Institute for Marine and Antarctic Studies (IMAS) website >

Type of resource

Resource scope
Dataset
Name
IMAS Dataset level record
Metadata linkage
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/2a414204-ed47-431d-bad7-a6fee9dca874

Point of truth URL of this metadata record

Date info (Creation)
2023-08-28T00:00:00
Date info (Revision)
2023-08-29T11:44:28

Metadata standard

Title
ISO 19115-3:2018
 
 

Overviews

Spatial extent

N
S
E
W


Keywords

Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
Biological Oceanography
Global Change Master Directory Earth Science Keywords, Version 8.5
EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PLANTS | MICROALGAE | DIATOMS EARTH SCIENCE | BIOSPHERE | ECOSYSTEMS | AQUATIC ECOSYSTEMS | PLANKTON | PHYTOPLANKTON EARTH SCIENCE | BIOSPHERE | ECOSYSTEMS | MARINE ECOSYSTEMS | COASTAL EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | ALKALINITY EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | BIOGEOCHEMICAL CYCLES EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | CARBON DIOXIDE EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | SILICATE

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