Results 11 to 20 of about 3,307 (174)

New geometric models for calculation of microalgal biovolume [PDF]

Brazilian Archives of Biology and Technology, 2011
Biovolume calculation of micro algae is commonly used for the assessment in relative abundance (as biomass or carbon) of coexistent algae that vary in shape and/or size. Periphyton samples were obtained within a more general program, in fishery tanks and
Bárbara Idino Konoplya, Francisco Striquer Soares   +1 more
doaj   +4 more sources

Rivers affect the biovolume and functional traits of phytoplankton in floodplain lakes [PDF]

Acta Limnologica Brasiliensia, 2017
Aim: We analyzed the temporal distribution (dry and rainy periods) of phytoplankton functional groups (biovolume) from lakes connected to dammed (S1 - Paraná River) and non-dammed rivers (S2 - Baia River and S3 - Ivinhema River) in the upper Paraná River
Alfonso Pineda, Geovani Arnhold Moresco, Aline Caroline Magro de Paula, Luciane Maria Nogueira, Patricia Iatskiu, Yasmin Rodrigues de Souza, Larissa Mozini Reis, Luzia Cleide Rodrigues   +7 more
doaj   +3 more sources

Effect of phytoplankton morphology on the measurement of biovolume. [PDF]

J Plankton Res
Abstract Algal biovolume is a standard measurement for limnological and oceanographic studies, which is used to proxy biomass and productivity. Manual and automatic methods can be applied to estimate biovolume from phytoplankton images. We examined the effects of algal shape and taxon (largely genus) on the accuracy of automatic image-
Farrow CR, Ackerman JD.
europepmc   +3 more sources

Visualisation and biovolume quantification in the characterisation of biofilm formation in Mycoplasma fermentans [PDF]

Scientific Reports, 2021
AbstractThe ability of mycoplasmas to persist on surfaces has been widely acknowledged, despite their fastidious nature. However, the organism’s capability to form a recognisable biofilm structure has been identified more recently. In the current study Mycoplasma fermentans was found to adhere to the glass surface forming highly differentiated biofilm ...
Ammar A. Awadh, Alison F. Kelly, Gary Forster-Wilkins, David Wertheim, Richard Giddens, Simon W. Gould, Mark D. Fielder   +6 more
openaire   +4 more sources

Microplastics in the menu of Mediterranean zooplankton: Insights from the feeding response of the calanoid copepod Centropages typicus

Marine Ecology, EarlyView., 2023
Abstract Microplastic input into the ocean represents an increasing threat to marine biota and may endanger the functioning of marine ecosystems, especially in semi‐enclosed basins, such as the Mediterranean Sea. The size spectrum of microplastics overlaps with that of nano‐microplankton (2–200 μm), thus potentially misleading suspension‐feeding ...
Claudia Traboni, Diana Sarno, Maurizio Ribera d'Alcalà, Maria Grazia Mazzocchi   +3 more
wiley   +1 more source

A global diatom database – abundance, biovolume and biomass in the world ocean [PDF]

Earth System Science Data, 2012
Abstract. Phytoplankton identification and abundance data are now commonly feeding plankton distribution databases worldwide. This study is a first attempt to compile the largest possible body of data available from different databases as well as from individual published or unpublished datasets regarding diatom distribution in the world ocean.
Leblanc, K., Arístegui, J., Armand, L., Assmy, P., Beker, B., Bode, A. (Antonio), Breton, E., Cornet, V., Gibson, J., Varela-Rodríguez, M. (Manuel), Gosselin, M.P., Kopczynska, E., Marshall, H., Peloquin, J., Piontkovski, S., Poulton, A.J., Quéguiner, B., Schiebel, R., Schiebel, R., Shipe, R., Stefels, J., van Leeuwe, M.A., Widdicombe, C. (Claire), Yallop, M.   +23 more
openaire   +12 more sources

Bacterial Biovolume and Biomass Estimations [PDF]

Applied and Environmental Microbiology, 1985
The biomass of bacterial populations in aquatic ecosystems is often estimated by measuring bacterial biovolume and converting this into biomass in terms of carbon. A reliable conversion factor relating the measured bacterial biovolume to bacterial carbon content is essential for this approach. Based on direct measurements of bacterial cell
openaire   +2 more sources

Relationships between Biovolume and Biomass of Naturally Derived Marine Bacterioplankton [PDF]

Applied and Environmental Microbiology, 1987
Microscopic estimation of bacterial biomass requires determination of both biovolume and biovolume-to-biomass conversion. Both steps have uncertainty when applied to the very small bacteria typically found in natural seawater. In the present study, natural bacterioplankton assemblages were freshly collected, passed through 0.6-μm-pore-size
S, Lee, J A, Fuhrman
openaire   +3 more sources

Influence of biotic and abiotic sediment factors on abundance and biomass of harpacticoid copepods in a shallow Antarctic bay

Scientia Marina, 2005
This study presents data of the first investigation on benthic harpacticoid copepods in Potter Cove, King George Island, Antarctica (62°14’S, 58°40’W) with special emphasis on spatial distribution and relation to environmental factors. In addition to the
Gritta Veit-Köhler
doaj   +1 more source

Visualization and quantification of the cellular and extracellular components of Salmonella Agona biofilms at different stages of development. [PDF]

PLoS ONE, 2018
Salmonella is a major food-borne pathogen able to persist in food processing environments because of its ability to form biofilms. A Salmonella enterica serotype Agona isolate from poultry (S24) was grown at 37°C in biofilms for up to 144 hours (H144) in
Camino González-Machado, Rosa Capita, Félix Riesco-Peláez, Carlos Alonso-Calleja   +3 more
doaj   +1 more source