Brian, I have been team teaching a Tropical Ecology course based on peer reviewed literature and other primary sources this spring. Tropical river systems was one of the topics we covered and we read the following article. It may not be everything you are looking for, but it might give you some place to start.
Vegas-Vilarrúbia , T., J.E. Paolini, and J.G. Miragaya. 1988. Differentiation of Some Venezuelan Blackwater Rivers Based upon Physico-Chemical Properties of Their Humic Substances. Biogeochemistry 6:59-77. LaRoy LaRoy Brandt Department of Biology Truman State University 100 E Normal Kirksville, MO 63501 -----Original Message----- From: Ecological Society of America: grants, jobs, news [mailto:ECOLOG-L@LISTSERV.UMD.EDU] On Behalf Of Chalfant, Brian Sent: Friday, March 23, 2012 10:15 AM To: ECOLOG-L@LISTSERV.UMD.EDU Subject: [ECOLOG-L] Tannic stream chemistry. Estimable Ecologgers - Does anyone have any references on chemical characterization of tannic / blackwater streams? What are key chemical parameters that distinguish such streams? Dissolved organic carbon? pH? Alkali and alkaline earth metal cations? Something else? Some combination of these players? Are there different "kinds" of tannic streams? Visually, it's easy enough to see a stream looks like tea, but is there a suite of chemical parameters that correspond to this visual perception? Much obliged - Brian Brian A. Chalfant | -ologist Pennsylvania Department of Environmental Protection Rachel Carson State Office Building 400 Market Street | Harrisburg, PA 17101 Phone: 717.787.9639 | Fax: 717.772.3249 www.depweb.state.pa.us<http://www.depweb.state.pa.us/> "At what point in its course does the Mississippi become what the Mississippi means?" - Thomas Stearns Eliot "I can eat fifty eggs." - Lucas Jackson "... the ontogeny of a frog is an 'event,'..." - J. S. Rowe " 1. "John called" is true. 2. "It is true that John called." - Karl Popper "Just as I feared, her Buddhism has led directly to witchcraft." - Ned Flanders
