The importance of microgradients for marine calcifiers
This thesis describes the importance of microgradients around organic tissue of calcifiers in comparison to bulk seawater conditions. It is shown that microenvironmental acidification around calcifiers can result from various causes, such as calcification (Chapter 1), microbial mat or sediment expos...
Main Author: | |
---|---|
Other Authors: | , , |
Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
Published: |
Universität Bremen
2012
|
Subjects: | |
Online Access: | https://media.suub.uni-bremen.de/handle/elib/364 https://nbn-resolving.org/urn:nbn:de:gbv:46-00102751-12 |
id |
ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/364 |
---|---|
record_format |
openpolar |
spelling |
ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/364 2023-05-15T17:51:21+02:00 The importance of microgradients for marine calcifiers Die Bedeutung von Mikrogradienten für marine Kalzifizierer Glas, Martin Bischof, Kai de Beer, Dirk Rost, Björn 2012-08-14 application/pdf https://media.suub.uni-bremen.de/handle/elib/364 https://nbn-resolving.org/urn:nbn:de:gbv:46-00102751-12 eng eng Universität Bremen FB2 Biologie/Chemie https://media.suub.uni-bremen.de/handle/elib/364 urn:nbn:de:gbv:46-00102751-12 info:eu-repo/semantics/openAccess microgradients microenvironments O2 pH Ca2 calcifier microsensor 570 570 Life sciences biology ddc:570 Dissertation doctoralThesis 2012 ftsubbremen 2022-11-09T07:09:21Z This thesis describes the importance of microgradients around organic tissue of calcifiers in comparison to bulk seawater conditions. It is shown that microenvironmental acidification around calcifiers can result from various causes, such as calcification (Chapter 1), microbial mat or sediment exposure (Chapter 2), respiration (Chapter 2) or ocean acidification conditions (Chapter 3). Some calcifiers, like sediment dwelling foraminifera and bivalves, are naturally adapted to low pH and hypoxic conditions (Chapter 1, 2). Yet, microenvironmental low pH, hypoxia and high levels of sulphide resulted in tissue necrosis of corals, but only if those conditions were trapped close to the tissue of corals for extended periods of time (Chapter 2). The performance of some calcifiers under low pH and hypoxic conditions thus depends upon the duration of the exposure, as well as the diffusional resistance between the bulk seawater and their tissues. If diffusivity around their organic tissues is significantly reduced, some calcifiers may not be able to maintain pH homeostasis and thus severely suffer from extended exposure to low pH, hypoxia and high levels of sulphide (Chapter 2). Doctoral or Postdoctoral Thesis Ocean acidification Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
microgradients microenvironments O2 pH Ca2 calcifier microsensor 570 570 Life sciences biology ddc:570 |
spellingShingle |
microgradients microenvironments O2 pH Ca2 calcifier microsensor 570 570 Life sciences biology ddc:570 Glas, Martin The importance of microgradients for marine calcifiers |
topic_facet |
microgradients microenvironments O2 pH Ca2 calcifier microsensor 570 570 Life sciences biology ddc:570 |
description |
This thesis describes the importance of microgradients around organic tissue of calcifiers in comparison to bulk seawater conditions. It is shown that microenvironmental acidification around calcifiers can result from various causes, such as calcification (Chapter 1), microbial mat or sediment exposure (Chapter 2), respiration (Chapter 2) or ocean acidification conditions (Chapter 3). Some calcifiers, like sediment dwelling foraminifera and bivalves, are naturally adapted to low pH and hypoxic conditions (Chapter 1, 2). Yet, microenvironmental low pH, hypoxia and high levels of sulphide resulted in tissue necrosis of corals, but only if those conditions were trapped close to the tissue of corals for extended periods of time (Chapter 2). The performance of some calcifiers under low pH and hypoxic conditions thus depends upon the duration of the exposure, as well as the diffusional resistance between the bulk seawater and their tissues. If diffusivity around their organic tissues is significantly reduced, some calcifiers may not be able to maintain pH homeostasis and thus severely suffer from extended exposure to low pH, hypoxia and high levels of sulphide (Chapter 2). |
author2 |
Bischof, Kai de Beer, Dirk Rost, Björn |
format |
Doctoral or Postdoctoral Thesis |
author |
Glas, Martin |
author_facet |
Glas, Martin |
author_sort |
Glas, Martin |
title |
The importance of microgradients for marine calcifiers |
title_short |
The importance of microgradients for marine calcifiers |
title_full |
The importance of microgradients for marine calcifiers |
title_fullStr |
The importance of microgradients for marine calcifiers |
title_full_unstemmed |
The importance of microgradients for marine calcifiers |
title_sort |
importance of microgradients for marine calcifiers |
publisher |
Universität Bremen |
publishDate |
2012 |
url |
https://media.suub.uni-bremen.de/handle/elib/364 https://nbn-resolving.org/urn:nbn:de:gbv:46-00102751-12 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/364 urn:nbn:de:gbv:46-00102751-12 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766158455741087744 |