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| Wong, Gtf; Dunstan, Wm; Kim, Db. |
| All nine species of marine phytoplankton tested (a cyanobacterium: Synechococcus sp., three diatoms: Chaetoceros simplex, Thalassiosira oceanica and Skeletonema costatum, two prymnesiophytes: Pleurochrysis carterae and Isochrysis galbana, a prasinophyte: Tetraselmis sp., a green alga: Dunaliella tertiolecta, and a dinoflagellate: Amphidinium carterae) were able to decompose hydrogen peroxide in the dark. Since these phytoplankton species can be found widely in a variety of marine sub-environments, this indicates that the dark decomposition of hydrogen peroxide by phytoplankton is a general phenomenon in the oceans. The decomposition rates were first order with respect to the concentration of hydrogen peroxide and biomass. The second-order rate constants... |
| Tipo: Text |
Palavras-chave: Phytoplancton marin; Peroxyde d'hydrogène; Oxydo-réduction; Marine phytoplankton; Hydrogen peroxide; Oxidation-reduction. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00322/43276/43007.pdf |
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| RUIZ GÓMEZ,Anderson; MANCERA PINEDA,José Ernesto. |
| ABSTRACT In the last decades, harmful algal blooms (HAB) and toxic events such as ciguatera seem to have increased in frequency and intensity, negatively impacting human health, economy, and marine ecosystems. In Colombia, these events have caused a series of consequences ranging from the death of fish and birds to toxic effects on humans. Although some toxin-producing dinoflagellate species are common in the Caribbean, their dynamics are poorly understood, making the adoption of any regulations difficult. To determine the composition and abundance of dinoflagellates associated with seagrasses we collected 18 samples on Isla de Barú, during 2015. We found ten diatom genera and three dinoflagellate genera, Prorocentrum, Ostreopsis, and Gambierdiscus, that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climate change; Food poisoning; Marine phytoplankton; Microalgae phytoplankton abundance. |
| Ano: 2019 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2019000100109 |
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