Sat, 26 Jul 2008 08:03:58 BST CiteULike: vrich's qpcr http://www.citeulike.org/user/vrich/tag/qpcr CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/vrich/article/590584 <i>Science, Vol. 311, No. 5768. (24 March 2006), pp. 1737-1740.</i><br /><br />Prochlorococcus is the numerically dominant phytoplankter in the oligotrophic oceans, accounting for up to half of the photosynthetic biomass and production in some regions. Here, we describe how the abundance of six known ecotypes, which have small subunit ribosomal RNA sequences that differ by less than 3%, changed along local and basin-wide environmental gradients in the Atlantic Ocean. Temperature was significantly correlated with shifts in ecotype abundance, and laboratory experiments confirmed different temperature optima and tolerance ranges for cultured strains. Light, nutrients, and competitor abundances also appeared to play a role in shaping different distributions. 10.1126/science.1118052 Niche Partitioning Among Prochlorococcus Ecotypes Along Ocean-Scale Environmental Gradients Zackary Johnson Erik Zinser Allison Coe Nathan Mcnulty Woodward Sallie Chisholm doi:10.1126/science.1118052 Science, Vol. 311, No. 5768. (24 March 2006), pp. 1737-1740. 2006-04-18T15:59:09-00:00 2006 Science 311 5768 1737 1740 fcm prochlorococcus qpcr transect