| title: |
| Ocean acidification in the Baltic Sea: involved processes, metrology of pH in brackish
waters, and calcification under fluctuating conditions |
|
| contributing persons: |
|
| contributing corporate bodies: |
| Universität Rostock[Grad-verleihende Institution] |
 |
38329-6 |
| Universität Rostock, Mathematisch-Naturwissenschaftliche Fakultät[Grad-verleihende Institution] |
 |
2147083-2 |
|
| |
| abstract: |
|
Globally, ocean acidification presents a threat to marine ecosystems. In the Baltic
Sea, this process could so far not be quantified, partly due to a lack of appropriate
pH observations. This study unravels a positive alkalinity trend in the Baltic Sea
over the past two decades that counteracted acidification. Further, state-of-the-art
spectrophotometric pH measurements in brackish waters are enabled by characterizing
pH buffer solutions and the indicator dye m-Cresol purple at low salinities. Finally,
pH fluctuations and their implications for benthic ecosystems are examined.
[English] |
|
Global gefährdet die Ozeanversauerung marine Ökosysteme. In der Ostsee konnte dieser
Prozess bisher mangels aussagekräftiger pH-Messungen nicht quantifiziert werden. Diese
Arbeit beleuchtet einen langfristigen Anstieg der Ostsee-Alkalinität über die vergangen
zwei Dekaden, welcher der Versauerung entgegenwirkte. Weiterhin wird die spektrophotometrische
pH-Messmethode für Brackwasser eingeführt, indem pH-Pufferlösungen und der Farbstoff
m-Kresolpurpur für niedrige Salzgehalte charakterisiert werden. Abschließend werden
pH-Fluktuationen und deren Bedeutung für benthische Ökosysteme untersucht.
[German] |
|
| document type: |
|
| institution: |
| Faculty of Mathematics and Natural Sciences |
|
| language: |
|
| subject class (DDC): |
| 333.7 Natural resources, energy and environment |
| 540 Chemistry & allied sciences |
| 624 Structural and Environmental Engineering |
|
| |
publication / production: |
Rostock
|
Rostock: Universität Rostock
|
|
2018
|
|
| statement of responsibility: |
| vorgelegt von Jens Daniel Müller |
|
| |
| identifiers: |
|
| |
| access condition: |
|
| license/rights statement: |
all rights reserved This work may only be used under the terms of the German Copyright Law (Urheberrechtsgesetz). |
|
|
| RosDok id: |
rosdok_disshab_0000001963 |
| created / modified: |
11.10.2018 / 08.08.2023
|
| metadata license: |
The metadata of this document was dedicated to the public domain (CC0 1.0 Universal Public Domain Dedication). |