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DatoValore
TitlePicophytoplankton in freshwater ecosystems: the importance of small-sized phototrophs
AbstractAbout 40 years have passed since the discovery of picophytoplankton; the present knowledge of the taxonomy, physiology and ecology of these tiny photoautotrophic cells offers new perspectives on the importance of the microbial contribution to global biogeochemical cycles and food webs. This review focuses on the relationships among the components of picophytoplankton (picocyanobacteria and the picoplanktic eukaryotes) and biotic and abiotic environmental factors. The dynamics of picophytoplankton in aquatic ecosystems are strictly dependent upon basin size and trophy, temperature, and nutrient and light limitation, but they are also regulated by grazing and viral-induced lysis. The review considers: the pros and cons of the molecular approach to the study of the taxonomy of freshwater Synechococcus spp.; the importance of ecological aspects in understanding the puzzle of picophytoplankton phylogeny (genotype vs ecotype); and the role of biotic vs abiotic interactions in controlling picophytoplankton dynamics. Biotic, top-down control mechanisms are reviewed as well as knowledge of other biological interactions.
SourceFreshwater reviews 1 (1), pp. 1–28
KeywordsPicocyanobacteria; freshwater autotrophic picoplankton; Synechococcustaxonomyphylogenetic diversityecologypopulation dynamics
JournalFreshwater reviews
EditorFreshwater Biological Association, Ambleside, Regno Unito
Year2008
TypeArticolo in rivista
DOI10.1608/FRJ-1.1.1
AuthorsCallieri C.
Text71914 2008 10.1608/FRJ 1.1.1 Google Scholar http //scholar.google.it/scholar hl=it q=Picophytoplankton in freshwater ecosystems%3A the importance of small sized phototrophs btnG= lr= Picocyanobacteria; freshwater autotrophic picoplankton; Synechococcus taxonomy phylogenetic diversity ecology population dynamics Picophytoplankton in freshwater ecosystems the importance of small sized phototrophs Callieri C. CNR Istituto per lo Studio degli Ecosistemi, Verbania About 40 years have passed since the discovery of picophytoplankton; the present knowledge of the taxonomy, physiology and ecology of these tiny photoautotrophic cells offers new perspectives on the importance of the microbial contribution to global biogeochemical cycles and food webs. This review focuses on the relationships among the components of picophytoplankton picocyanobacteria and the picoplanktic eukaryotes and biotic and abiotic environmental factors. The dynamics of picophytoplankton in aquatic ecosystems are strictly dependent upon basin size and trophy, temperature, and nutrient and light limitation, but they are also regulated by grazing and viral induced lysis. The review considers the pros and cons of the molecular approach to the study of the taxonomy of freshwater Synechococcus spp.; the importance of ecological aspects in understanding the puzzle of picophytoplankton phylogeny genotype vs ecotype ; and the role of biotic vs abiotic interactions in controlling picophytoplankton dynamics. Biotic, top down control mechanisms are reviewed as well as knowledge of other biological interactions. 1 https //www.fba.org.uk/journals/index.php/FRJ/article/view/75 This is a new Journal and is the reason why it not yet has the IF. I was invited to contribute from the Editor in chief and this is an honour. Articolo pubblicato This is a review paper 7_Callieri_2008_FRev.pdf Articolo in rivista Freshwater Biological Association 1755 084X Freshwater reviews Freshwater reviews Freshw. rev. Freshwater reviews. cristiana.callieri CALLIERI CRISTIANA TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici