The Ipojuca River is the third most polluted fluvial system in Brazil. Sediment-associated metal fluxes threaten environmental health estuary of this system. However, sources supplying these particle-bound contaminants have not been determined yet. Sediment source fingerprinting provides a powerful technique to obtain such information. Accordingly, aim study was quantify contributions suspended...

First posted May 31, 2023 For additional information, contact: Director, Colorado Water Science CenterU.S. Geological SurveyBox 25048, Mail Stop 415Denver, 80225 Selenium in aquatic ecosystems of the lower Gunnison River Basin is affecting recovery populations endangered, native fish species. Dietary exposure primary pathway for bioaccumulation selenium fish, and particulate can be consumed dir...

Crude oil spilled from the Herbaysprit in Oecember 2007 and contaminated Tae Ann Sound shoreline. A weathered oiled sediment collected at the spill area (Tai Ann beach) from 3 months to 12 months after the spil l. The fingerprinting and data interpretation techniques oil spill characterization and identification studies and environmental investigations discussed indude oil spill identification ...

Molecular fingerprinting techniques offer great promise for analyzing changes in microbial community structure, especially when dealing with large number of samples. However, a serious limitation has been the lack of quantification offered by such techniques since the relative abundances of the identified operational taxonomic units (OTUs) in the original samples are not measured. A quantitativ...

Diversity and community structure of aerobic methane-oxidizing bacteria in the littoral sediment of Lake Constance was investigated by cloning analysis and terminal restriction fragment length polymorphism (T-RFLP) fingerprinting of the pmoA gene. Phylogenetic analysis revealed a high diversity of type I and type II methanotrophs in the oxygenated uppermost centimeter of the sediment. T-RFLP pr...