Dataset: Magnesium isotopic ratios from ocean acidification experiments

Name: Magnesium isotopic compositions of seawater, extrapallial fluid, and Crassostrea virginica shell material from ocean acidification experiments
Published: 2025-03-01
Keywords: ocean acidification, Crassostrea virginica, magnesium isotopes, biota, oceans

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Cite This Dataset

Project:

Collaborative Research: Does ocean acidification induce a methylation response that affects the fitness of the next generation in oysters? (Epigenetics to Ocean)

Principal Investigator:

Dr Robert Eagle (University of California-Los Angeles, UCLA)

Co-Principal Investigator:

Katie Lotterhos (Northeastern University)

Justin B. Ries (Northeastern University)

Scientist:

Blanca Alvarez Caraveo (University of California-Los Angeles, UCLA)

Alan Downey-Wall (Northeastern University)

Maxence Guillermic (University of California-Los Angeles, UCLA)

Student:

Jill Sutton (Universite de Brest)

BCO-DMO Data Manager:

Dana Stuart Gerlach (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2025-03-01

Restricted:

Validated:

Current State:

Preliminary and in progress

Magnesium isotopic compositions of seawater, extrapallial fluid, and Crassostrea virginica shell material from ocean acidification experiments

Abstract:

The geochemistry of biogenic carbonates is an established proxy to record changing seawater parameters. However, the effect of ocean acidification on seawater chemistry and organism physiology may impact isotopic signatures and how elements are incorporated into carbonate shells. In this study, we investigated the geochemistry of three reservoirs important for biomineralization--seawater, the extrapallial fluid (EPF), and the shell. Ocean acidification laboratory experiments were conducted at [____place___] during [____time range___] to examine the effects of ambient, moderate, and high ocean acidification conditions on the geochemistry of the biomineralization reservoirs. Here we present magnesium isotope data for seawater, EPF, and Crassostrea virginica shells.

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Description

This dataset of magnesium isotopic compositions of seawater, extrapallial fluid, and Crassostrea virginica shell material is part of a larger ocean acidification study examining the geochemistry of carbonates with changing environmental conditions.

Methods & Sampling

Ocean acidification laboratory experiments were conducted at [____place___] during [____time range___] to examine the effects of ambient (500 ppm CO2), moderate (900 ppm CO2), and high (2800 ppm CO2) ocean acidification conditions on the geochemistry of seawater, extrapallial fluid (EPF) and shells of the Eastern oyster, Crassostrea virginica.

[More details are needed here on experimental design, set-up, instruments, etc.]

Here we present magnesium isotope data for three biomineralization reservoirs--seawater, EPF, and Crassostrea virginica shells.

[More details are needed]

Measured on an isotope ratio mass spectrometer [provide make, model, and lab]

Data Processing Description

The averages and average standard deviations were found by taking the square root of the squared magnesium isotope values:

SQRT ((CV3 delta-26Mg)^2 + CV6 delta-26Mg)^2 + CV7 delta-26Mg)^2 + CV8 delta-26Mg)^2)

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1635423

Deployments

None available yet

Instruments

Isotope-ratio Mass Spectrometer

Supplied Name: ????

Supplied Description:

Need details from submitter

Instrument Type

Generic Name: Isotope-ratio Mass Spectrometer

Acronym: IR Mass Spec; IRMS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/

Generic Description:

The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Sample _Label	Sample identification	unitless	sample
pCO2	Partial pressure of carbon dioxide simulating ocean acidification conditions	parts per million (ppm)	pCO2
Sample_type	Identifies which biomineralization reservoir the sample represents	unitless	sample_type
N	number???, of what??	unitless	number
delta_26Mg	Magnesium isotope ratio	per mil	Mg
SD	Standard deviation of delta 26Mg isotope measurement	per mil	std_dev

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Dataset: Magnesium isotopic ratios from ocean acidification experiments