Rivera-Monroy, V.H., Lenaker, P., Twilley, R.R., Delaune, R.D., Lindau, C.W., Nuttle, W., Habib, E., Fulweiler, R.W., Castaneda-Moya, E. (2010) Denitrification in coastal Louisiana: A Spatial Assessment and Research Needs. Journal of Sea Research 63 (3-4): 157-172.
Peter L Lenaker
Biography
M.S. in Oceanography and Coastal Sciences, Louisiana State University, 2009
B.S. in Environmental Science, Western Washington University - Huxley College of the Environment, 2006
A.A. in Environmental Studies, North Seattle College, 2003
Science and Products
Date published: April 5, 2019
Status: Active MMSD Watercourse Corridor Study: Contaminants in Water and Sediment
There are many kinds of chemical, physical, and biological contaminants contained in water and sediment, and new or “emerging” contaminants are continually being discovered. USGS investigations of contaminants in the MMSD Watercourse Corridor Study include studies of PAHs, microplastics, wastewater contamination, waterborne pathogens, as well as modeling long term trends in water quality.
Contacts: Steven R Corsi, Peter L Lenaker
Attribution: Upper Midwest Water Science Center
Date published: May 3, 2017
Status: Completed Human and Bovine Virus Prevalence in Some Great Lakes Tributaries Influenced by Watershed-Specific and Seasonal Characteristics
Human enteric and bovine-specific viruses were detected in eight Great Lakes tributaries. Presence and concentration of human viruses increased in watersheds with greater than 25 percent urban influence and more than 2,900 people per square kilometer. Similarly, bovine viruses increased in watersheds having greater than 40 percent agricultural land influence and cattle densities greater than...
Contacts: Peter L Lenaker
Pre-USGS Publications
Date published: February 19, 2019
Human Bacteria, Viruses from Sewage Found in Some Milwaukee Streams
Two types of human-associated bacteria and three types of human viruses were detected in Milwaukee streams within the Menomonee River watershed, according to a recent study led by the U.S. Geological Survey.
Date published: March 2, 2017
Human, Cattle Viruses Detected in Some Great Lakes Tributaries
Human and bovine, or cattle, viruses were detected in a small percentage of some Great Lakes Basin streams, with human viruses more prevalent in urban streams and bovine viruses more common in streams in agricultural areas, according to a recent U.S. Geological Survey-led study.