Effect of high pH on the growth and survival of marine phytoplankton: implications for species successionстатья из журнала
Аннотация: AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials AME 28:279-288 (2002) - doi:10.3354/ame028279 Effect of high pH on the growth and survival of marine phytoplankton: implications for species succession P. J. Hansen* Marine Biological Laboratory, University of Copenhagen, Strandpromenaden 5, 3000 Helsingør, Denmark *E-mail: pjhansen@zi.ku.dk ABSTRACT: Ten years of pH measurements (1990 to 1999) in the surface waters of the eutrophic Mariager Fjord, Denmark, revealed profound seasonal variation. Typically, pH was relatively constant around 8 from January to March, increased during spring, reached maximum levels in July to August (9 to 9.7), and declined during autumn to about 8 in October. The influence of pH on the growth rate of phytoplankton was tested on 3 species (Ceratium lineatum, Heterocapsa triquetra and Prorocentrum minimum) in laboratory experiments. The growth rate was highest at pH 7.5 to 8.0 in all species. The growth rate of C. lineatum declined by ~20% at pH 8.3 to 8.5, while a similar reduction in the growth rate in H. triquetra and P. minimum was observed at pH 8.8 to 8.9. C. lineatum stopped growing above pH 8.8, while growth ceased at about pH 9.45 in H. triquetra and 9.6 in P. minimum. Compilation of literature data on pH and phytoplankton growth suggested that while some species cannot grow at pH 8.4, others are able to grow up to pH 10. However, none of the species studied can attain their maximum growth rate above pH 9. Competition experiments using a mixture of C. lineatum, H. triquetra and P. minimum always resulted in the species with the highest pH tolerance (P. minimum) outcompeting the other species, irrespective of the initial pH value. The role of high pH in the succession of marine phytoplankton in nature is discussed. KEY WORDS: pH · Species succession · Competition · Marine · Phytoplankton · Growth · Inorganic carbon · DIC Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in AME Vol. 28, No. 3. Online publication date: July 24, 2002 Print ISSN: 0948-3055; Online ISSN: 1616-1564 Copyright © 2002 Inter-Research.
Год издания: 2002
Авторы: Per Juel Hansen
Издательство: Inter-Research Science Center
Источник: Aquatic Microbial Ecology
Ключевые слова: Marine and coastal ecosystems, Ocean Acidification Effects and Responses, Marine Bivalve and Aquaculture Studies
Открытый доступ: bronze
Том: 28
Страницы: 279–288