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Modeling the Role of pH on Baltic Sea Cyanobacteria

We simulate pH-dependent growth of cyanobacteria with an ecosystem model for the central Baltic Sea. Four model components—a life cycle model of cyanobacteria, a biogeochemical model, a carbonate chemistry model and a water column model—are coupled via the framework for aquatic biogeochemical models...

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Detalles Bibliográficos
Autores principales: Hinners, Jana, Hofmeister, Richard, Hense, Inga
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4500135/
https://www.ncbi.nlm.nih.gov/pubmed/25830591
http://dx.doi.org/10.3390/life5021204
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author Hinners, Jana
Hofmeister, Richard
Hense, Inga
author_facet Hinners, Jana
Hofmeister, Richard
Hense, Inga
author_sort Hinners, Jana
collection PubMed
description We simulate pH-dependent growth of cyanobacteria with an ecosystem model for the central Baltic Sea. Four model components—a life cycle model of cyanobacteria, a biogeochemical model, a carbonate chemistry model and a water column model—are coupled via the framework for aquatic biogeochemical models. The coupled model is forced by the output of a regional climate model, based on the A1B emission scenario. With this coupled model, we perform simulations for the period 1968–2098. Our simulation experiments suggest that in the future, cyanobacteria growth is hardly affected by the projected pH decrease. However, in the simulation phase prior to 1980, cyanobacteria growth and N [Formula: see text]-fixation are limited by the relatively high pH. The observed absence of cyanobacteria before the 1960s may thus be explained not only by lower eutrophication levels, but also by a higher alkalinity.
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spelling pubmed-45001352015-07-13 Modeling the Role of pH on Baltic Sea Cyanobacteria Hinners, Jana Hofmeister, Richard Hense, Inga Life (Basel) Article We simulate pH-dependent growth of cyanobacteria with an ecosystem model for the central Baltic Sea. Four model components—a life cycle model of cyanobacteria, a biogeochemical model, a carbonate chemistry model and a water column model—are coupled via the framework for aquatic biogeochemical models. The coupled model is forced by the output of a regional climate model, based on the A1B emission scenario. With this coupled model, we perform simulations for the period 1968–2098. Our simulation experiments suggest that in the future, cyanobacteria growth is hardly affected by the projected pH decrease. However, in the simulation phase prior to 1980, cyanobacteria growth and N [Formula: see text]-fixation are limited by the relatively high pH. The observed absence of cyanobacteria before the 1960s may thus be explained not only by lower eutrophication levels, but also by a higher alkalinity. MDPI 2015-03-30 /pmc/articles/PMC4500135/ /pubmed/25830591 http://dx.doi.org/10.3390/life5021204 Text en © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hinners, Jana
Hofmeister, Richard
Hense, Inga
Modeling the Role of pH on Baltic Sea Cyanobacteria
title Modeling the Role of pH on Baltic Sea Cyanobacteria
title_full Modeling the Role of pH on Baltic Sea Cyanobacteria
title_fullStr Modeling the Role of pH on Baltic Sea Cyanobacteria
title_full_unstemmed Modeling the Role of pH on Baltic Sea Cyanobacteria
title_short Modeling the Role of pH on Baltic Sea Cyanobacteria
title_sort modeling the role of ph on baltic sea cyanobacteria
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4500135/
https://www.ncbi.nlm.nih.gov/pubmed/25830591
http://dx.doi.org/10.3390/life5021204
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