The role of sulfur in biomineralization: Argopecten irradians and the impact of ocean acidification
The burning of fossil fuels, and other natural processes, has led to an increase of carbon dioxide (CO2) in the atmosphere. The equilibration of atmospheric CO2 with surface waters causes the ocean pH to decrease from the current value of 8.1. Evidence suggests that as the ocean becomes more alkalin...
Main Author: | |
---|---|
Format: | Thesis |
Language: | English |
Published: |
University of Massachusetts Boston
2010
|
Subjects: | |
Online Access: | http://pqdtopen.proquest.com/#viewpdf?dispub=1483879 |
id |
ftproquest:oai:pqdtoai.proquest.com:1483879 |
---|---|
record_format |
openpolar |
spelling |
ftproquest:oai:pqdtoai.proquest.com:1483879 2023-05-15T17:51:19+02:00 The role of sulfur in biomineralization: Argopecten irradians and the impact of ocean acidification Broadaway, Bryanna Joy 2010-01-01 00:00:01.0 http://pqdtopen.proquest.com/#viewpdf?dispub=1483879 ENG eng University of Massachusetts Boston http://pqdtopen.proquest.com/#viewpdf?dispub=1483879 Environmental science thesis 2010 ftproquest 2021-03-13T17:35:11Z The burning of fossil fuels, and other natural processes, has led to an increase of carbon dioxide (CO2) in the atmosphere. The equilibration of atmospheric CO2 with surface waters causes the ocean pH to decrease from the current value of 8.1. Evidence suggests that as the ocean becomes more alkaline, organisms such as the bay scallop, Argopecten irradiansm, will become more stressed due to increased energy demands to maintain shell deposition and growth. This stress, as hypothesized here, may cause the deposition of S-bearing organic macromolecules to aid in mineralization as well as the potential for sulfate substitution and the deposition of gypsum (calcium sulfate) as opposed to calcite. I hypothesize that scallops raised under pH conditions predicted for the end of the 21st century will have higher total S content which may be due to the deposition of sulfate and/or deposition of high-S organic macromolecules. I will investigate this possibility as well as the possibility that the shift towards increased sulfur impacts the stable S isotopic composition of the inorganic and organic components of shells from organisms raised under high dissolved CO2 conditions as compared to “normal” pH. Thesis Ocean acidification PQDT Open: Open Access Dissertations and Theses (ProQuest) |
institution |
Open Polar |
collection |
PQDT Open: Open Access Dissertations and Theses (ProQuest) |
op_collection_id |
ftproquest |
language |
English |
topic |
Environmental science |
spellingShingle |
Environmental science Broadaway, Bryanna Joy The role of sulfur in biomineralization: Argopecten irradians and the impact of ocean acidification |
topic_facet |
Environmental science |
description |
The burning of fossil fuels, and other natural processes, has led to an increase of carbon dioxide (CO2) in the atmosphere. The equilibration of atmospheric CO2 with surface waters causes the ocean pH to decrease from the current value of 8.1. Evidence suggests that as the ocean becomes more alkaline, organisms such as the bay scallop, Argopecten irradiansm, will become more stressed due to increased energy demands to maintain shell deposition and growth. This stress, as hypothesized here, may cause the deposition of S-bearing organic macromolecules to aid in mineralization as well as the potential for sulfate substitution and the deposition of gypsum (calcium sulfate) as opposed to calcite. I hypothesize that scallops raised under pH conditions predicted for the end of the 21st century will have higher total S content which may be due to the deposition of sulfate and/or deposition of high-S organic macromolecules. I will investigate this possibility as well as the possibility that the shift towards increased sulfur impacts the stable S isotopic composition of the inorganic and organic components of shells from organisms raised under high dissolved CO2 conditions as compared to “normal” pH. |
format |
Thesis |
author |
Broadaway, Bryanna Joy |
author_facet |
Broadaway, Bryanna Joy |
author_sort |
Broadaway, Bryanna Joy |
title |
The role of sulfur in biomineralization: Argopecten irradians and the impact of ocean acidification |
title_short |
The role of sulfur in biomineralization: Argopecten irradians and the impact of ocean acidification |
title_full |
The role of sulfur in biomineralization: Argopecten irradians and the impact of ocean acidification |
title_fullStr |
The role of sulfur in biomineralization: Argopecten irradians and the impact of ocean acidification |
title_full_unstemmed |
The role of sulfur in biomineralization: Argopecten irradians and the impact of ocean acidification |
title_sort |
role of sulfur in biomineralization: argopecten irradians and the impact of ocean acidification |
publisher |
University of Massachusetts Boston |
publishDate |
2010 |
url |
http://pqdtopen.proquest.com/#viewpdf?dispub=1483879 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://pqdtopen.proquest.com/#viewpdf?dispub=1483879 |
_version_ |
1766158431683608576 |