See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/260437009 Biomarker assessment of spatial and temporal changes in the composition of flocculent material (floc) in the subtropical... Article in Environmental Chemistry · January 2013 DOI: 10.1071/EN13062 CITATIONS 10 READS 61 3 authors, including: Oliva Pisani United States Department of Agriculture 16 PUBLICATIONS 296 CITATIONS SEE PROFILE All content following this page was uploaded by Oliva Pisani on 03 March 2014. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.