Results 161 to 170 of about 2,204 (189)

Photoinhibition in marine picocyanobacteria

Physiologia Plantarum, 2017
Marine Synechococcus and Prochlorococcus cyanobacteria have different antenna compositions although they are genetically near to each other, and different strains thrive in very different illumination conditions. We measured growth and photoinhibition of PSII in two low‐light and one high‐light Prochlorococcus strains and in one Synechococcus strain ...
Arto Soitamo, Vesa Havurinne, Esa Tyystjärvi   +2 more
openaire   +2 more sources

Picocyanobacteria and Bacteria in Lake Kinneret

International Review of Hydrobiology, 1991
AbstractIn Lake Kinneret, we have been monitoring the numbers and depth distributions of bacteria and picocyanobacteria since early 1988. Picocyanobacteria were found throughout the year at all depths, at concentrations ranging from < 103 to 105 cells·ml−1. Highest abundances were recorded during summer and fall in the epilimnion.
Nehama Malinsky‐Rushanksy, Tom Berman
exaly   +2 more sources

Distribution of picocyanobacteria and virioplankton in mesotrophic and eutrophic reservoirs: The role of viruses in mortality of picocyanobacteria

Biology Bulletin, 2010
The quantitative distribution and relationships of picocyanobacteria and viruses were studied in the mesotrophic Sheksna and mesoeutrophic Rybinsk reservoirs belonging to the system of the Volga-Baltic Waterway. The share of picocyanobacteria in the sum biomass and production of phytoplankton decreased along with increase in the productivity in the ...
A I, Kopylov, D B, Kosolapov, E A, Zabotkina, V, Straskrabova   +3 more
openaire   +2 more sources

Picocyanobacteria in Adriatic transitional environments

Estuarine, Coastal and Shelf Science, 2007
Abstract In the marine realm picoplanktonic cyanobacteria (PC) show a broad distribution from the surface ocean to the offshore and coastal waters of semi-enclosed seas and, because of their photoheterotrophy, they are responsible for a substantial fraction of both primary production and organic matter degradation/utilization.
Alessandro Paoli, Mauro Celussi, Annalisa Valeri, Chiara Larato, Andrea Bussani, Serena Fonda Umani, Maria Rosaria Vadrucci, Cristina Mazziotti, Paola Del Negro   +8 more
openaire   +1 more source

Picocyanobacteria aggregation as a response to predation pressure: direct contact is not necessary [PDF]

FEMS Microbiology Ecology, 2020
ABSTRACT Picocyanobacteria (cells &lt;2 µm) can be found either as single-cells (Pcy) or embedded in a mucilaginous sheath as microcolonies or colonies (CPcy). It has been demonstrated that phenotypic plasticity in picocyanobacteria (i.e.
Paula Huber, Paulina Fermani, Fernando Unrein   +2 more
exaly   +4 more sources

Impact of viruses on heterotrophic bacterioplankton and picocyanobacteria in reservoirs

Doklady Biological Sciences, 2011
In aquatic ecosystems, viruses are considered to bean important factor controlling bacterio and phytoplankton abundance, production, and diversity andplay an important role in the biogeochemical cycles ofcarbon and other components [1]. Analysis of literature on ecology of aquatic viruses shows that, atpresent, viruses in freshwaters are less studied ...
A I, Kopylov, D B, Kosolapov, E A, Zabotkina   +2 more
openaire   +2 more sources

Strain-specific photosynthetic response of freshwater picocyanobacteria

Verhandlungen Der Internationalen Vereinigung Fur Theoretische Und Angewandte Limnologie International Association of Theoretical and Applied Limnology, 2005
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Thomas Weisse, Cristiana Callieri
exaly   +4 more sources

Significant silicon accumulation by marine picocyanobacteria

Nature Geoscience, 2012
Diatoms—unicellular algae that form substantial blooms in cold, nutrient-rich waters—are thought to be responsible for the export of marine silica to depth. An analysis of the elemental composition of marine cyanobacteria suggests that picocyanobacteria also accumulate significant quantities of silicon.
Stephen B. Baines, Benjamin S. Twining, Mark A. Brzezinski, Jeffrey W. Krause, Stefan Vogt, Dylan Assael, Hannah McDaniel   +6 more
openaire   +1 more source

Non-viral predators of marine picocyanobacteria

Trends in Microbiology
The Earth's most abundant photosynthetic cells, the picocyanobacteria - Prochlorococcus and Synechococcus - play a fundamental global role in aquatic ecosystems. The success of these picocyanobacteria is interpreted through a cross-scale systems framework that integrates bottom-up controls on growth (e.g., nutrients and light), diversity, and the ...
Anvita U. Kerkar, Kelly R. Sutherland, Anne W. Thompson   +2 more
openaire   +2 more sources

Freshwater Picocyanobacteria: Single Cells, Microcolonies and Colonial Forms

2012
This chapter deals with some taxonomic and ecological aspects of picocyanobacteria (Pcy) single-cells, microcolonies and other colonial (CPcy), that are common in lakes throughout the world, and abundant across a wide spectrum of trophic conditions.
Callieri Cristiana, Cronberg Gertrud, Stockner John G   +2 more
openaire   +2 more sources