| What drives the distribution of the bloom forming cyanobacteria Planktothrix agardhii and Cylindrospermopsis raciborskii? | |
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MedLine Citation:
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PMID: 22092489 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The cyanobacteria Planktothrix agardhii and Cylindrospermopsis raciborskii are common bloom forming species in eutrophic freshwaters. These filamentous species share certain physiological traits that imply they might flourish under similar environmental conditions. We compared the distribution of the two species in a large database (940 samples) covering different climatic regions and the Northern and Southern hemispheres, and carried out laboratory experiments to compare their morphological and physiological responses. The environmental ranges of the two species overlapped with respect to temperature, light and total phosphorus, however they responded differently to environmental gradients; C. raciborskii biovolume changed gradually while P. agardhii shifted sharply from being highly dominant to a rare component of the phytoplankton. As expected, P. agardhii dominates the phytoplankton with high total phosphorus and low light availability conditions. Contrary to predictions, C. raciborskii succeeded in all climates and temperatures as low as 11 °C. C. raciborskii had higher phenotypic plasticity than P. agardhii in terms of pigments, individual size and growth rates. We conclude that the phenotypic plasticity of C. raciborskii could explain its ongoing expansion to temperate latitudes and suggest its future predominance under predicted climate change scenarios. |
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Authors:
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Sylvia Bonilla; Luis Aubriot; Maria Carolina S Soares; Mauricio González-Piana; Amelia Fabre; Vera L M Huszar; Miquel Lürling; Dermot Antoniades; Judit Padisák; Carla Kruk |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-7 |
Journal Detail:
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Title: FEMS microbiology ecology Volume: - ISSN: 1574-6941 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8901229 Medline TA: FEMS Microbiol Ecol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2011 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved. |
Affiliation:
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Grupo de Ecología y Fisiología de Fitoplancton, Sección Limnología, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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