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Trichodesmium needs iron to make bio-available nitrogen, and luckily for red tide, climate change is delivering more iron to Gulf waters.
Genetic diversity of the pelagic harpacticoid copepod Macrosetella gracilis on colonies of the cyanobacterium Trichodesmium spp.
The researchers, from Florida State University, Princeton University and China's Xiamen University, say rising carbon dioxide levels around the globe will make our seawater more acidic, and if that happens the Trichodesmium, which is responsible for a large percentage of the oceans' nitrogen fixation and is especially important in tropical and subtropical areas, will become less productive.
Dinophysis spp., Prorocentrum spp, Protoperidinium spp., Pseudo-nitzschia spp., and Trichodesmium erythreaum were the most abundant taxa observed over the 2-year period leaving the other phytoplankton taxa recorded rare and in low cell numbers.
Large diatoms and blue-green alga Trichodesmium were fairly abundant, with the large dinoflagellates less significant .
The genera Trichodesmium, Synechococcus, and Richelia have frequently been observed as extensive
In Marine Pelagic Cyanobacteria: Trichodesmium and Other Diazotrophs (Carpenter, E.
Hutchins and his team studied two major groups of nitrogen-fixing cyanobacteria: Trichodesmium, which forms large floating colonies big enough to see with the naked eye and makes vast "blooms" in the open ocean, and Crocosphaera, which is also very abundant but is a single-celled, microscopic organism.
In 2006, a team of scientists including Dyhrman and former WHOI biologist Eric Webb found that several species of a phytoplankton called Trichodesmium have a special set of genes encoding the machinery that enables them to break the phosphonate bond and get the phosphorus out.
Few species were dominant in the area, the diatom Leptocylindrus danicus Cleve and the cyanobacteria Trichodesmium erythraeum Ehrenberg stood out for being at most stations.
The cyanobacteria's cells, such as those in a Trichodesmium species, don't transport C[O.sub.2] efficiently from the outside world to their internal energy trapping machinery.
(1983): Physiology and ecology of marine planktonic Oscillatoria (Trichodesmium).
Cyanobacteria of the genus Trichodesmium are abundant in tropical and subtropical regions and significantly contribute to carbon and nitrogen fixation in these environments (1).
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