Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5568
Mercury remediation in wetland sediment using zero-valent iron and granular activated carbon Mercury remediation in wetland sediment using zero-valent iron and granular activated carbon
Wetlands are hotspots for production of toxic methylmercury (MeHg) that can bioaccumulate in the food web. The objective of this study was to determine whether the application of zero-valent iron (ZVI) or granular activated carbon (GAC) to wetland sediment could reduce MeHg production and bioavailability to benthic organisms. Field mesocosms were installed in a wetland fringing Hodgdon...
Authors
Ariel S. Lewis, Thomas G. Huntington, Mark C. Marvin-DiPasquale, Aria Amirbahman
Wetland tree transpiration modified by river-floodplain connectivity Wetland tree transpiration modified by river-floodplain connectivity
Hydrologic connectivity provisions water and nutrient subsidies to floodplain wetlands and may be particularly important in floodplains with seasonal water deficits through its effects on soil moisture. In this study, we measured sapflow in 26 trees of two dominant floodplain forest species (Celtis laevigata and Quercus lyrata) at two hydrologically distinct sites in the lower White...
Authors
Scott T. Allen, Ken W. Krauss, J. Wesley Cochran, Sammy L. King, Richard F. Keim
Spatial configuration trends in coastal Louisiana from 1985 to 2010 Spatial configuration trends in coastal Louisiana from 1985 to 2010
From 1932 to 2010, coastal Louisiana has experienced a net loss of 4877 km2 of wetlands. As the area of these wetlands has changed, so too has the spatial configuration of the landscape. The resulting landscape is a mosaic of patches of wetlands and open water. This study examined the spatial and temporal variability of trajectories of landscape configuration and the relation of those...
Authors
Brady Couvillion, Michelle Fischer, Holly J. Beck, William J. Sleavin
Visual Basic, Excel-based fish population modeling tool - The pallid sturgeon example Visual Basic, Excel-based fish population modeling tool - The pallid sturgeon example
The model presented in this report is a spreadsheet-based model using Visual Basic for Applications within Microsoft Excel (http://dx.doi.org/10.5066/F7057D0Z) prepared in cooperation with the U.S. Army Corps of Engineers and U.S. Fish and Wildlife Service. It uses the same model structure and, initially, parameters as used by Wildhaber and others (2015) for pallid sturgeon. The...
Authors
Edward H. Moran, Mark L. Wildhaber, Nicholas S. Green, Janice L. Albers
Integrated risk and recovery monitoring of ecosystem restorations on contaminated sites Integrated risk and recovery monitoring of ecosystem restorations on contaminated sites
Ecological restorations of contaminated sites balance the human and ecological risks of residual contamination with the benefits of ecological recovery and the return of lost ecological function and ecosystem services. Risk and recovery are interrelated dynamic conditions, changing as remediation and restoration activities progress through implementation into long-term management and...
Authors
Michael J. Hooper, Stephen J. Glomb, David Harper, Timothy B. Hoelzle, Lisa M. McIntosh, David R. Mulligan
Migratory corridors of adult female Kemp’s ridley turtles in the Gulf of Mexico Migratory corridors of adult female Kemp’s ridley turtles in the Gulf of Mexico
For many marine species, locations of migratory pathways are not well defined. We used satellite telemetry and switching state-space modeling (SSM) to define the migratory corridor used by Kemp's ridley turtles (Lepidochelys kempii) in the Gulf of Mexico. The turtles were tagged after nesting at Padre Island National Seashore, Texas, USA from 1997 to 2014 (PAIS; n = 80); Rancho Nuevo...
Authors
Donna J. Shaver, Kristen M. Hart, Ikuko Fujisaki, Cynthia Rubio, Autumn R. Sartain-Iverson, Jaime Pena, Daniel Gomez Gamez, Raul de Jesus Gonzales Diaz Miron, Patrick M. Burchfield, Hector J. Martinez, Jaime Ortiz
Differences in impacts of Hurricane Sandy on freshwater swamps on the Delmarva Peninsula, Mid−Atlantic Coast, USA Differences in impacts of Hurricane Sandy on freshwater swamps on the Delmarva Peninsula, Mid−Atlantic Coast, USA
Hurricane wind and surge may have different influences on the subsequent composition of forests. During Hurricane Sandy, while damaging winds were highest near landfall in New Jersey, inundation occurred along the entire eastern seaboard from Georgia to Maine. In this study, a comparison of damage from salinity intrusion vs. wind/surge was recorded in swamps of the Delmarva Peninsula...
Authors
Beth A. Middleton
Potentiometric surfaces of the Arnold Engineering Development Complex Area, Arnold Air Force Base, Tennessee, May and September 2011 Potentiometric surfaces of the Arnold Engineering Development Complex Area, Arnold Air Force Base, Tennessee, May and September 2011
Arnold Air Force Base occupies about 40,000 acres in Coffee and Franklin Counties, Tennessee. The primary mission of Arnold Air Force Base is to provide risk-reduction information in the development of aerospace products through test and evaluation. This mission is achieved in part through test facilities at Arnold Engineering Development Complex (AEDC), which occupies about 4,000 acres...
Authors
Connor J. Haugh, John A. Robinson
Comment on "Worldwide evidence of a unimodal relationship between productivity and plant species richness" Comment on "Worldwide evidence of a unimodal relationship between productivity and plant species richness"
Fraser et al. (Reports, 17 July 2015, p. 302) report a unimodal relationship between productivity and species richness at regional and global scales, which they contrast with the results of Adler et al. (Reports, 23 September 2011, p. 1750). However, both data sets, when analyzed correctly, show clearly and consistently that productivity is a poor predictor of local species richness.
Authors
Andrew T. Tredennick, Peter B. Adler, James B. Grace, W Stanley Harpole, Elizabeth T. Borer, Eric W. Seabloom, T. Michael Anderson, Jonathan D. Bakker, Lori A. Biederman, Cynthia S. Brown, Yvonne M. Buckley, Cheng-Jin Chu, Scott L. Collins, Michael J. Crawley, Philip A. Fay, Jennifer Firn, Daniel S. Gruner, Nicole Hagenah, Yann Hautier, Andy Hector, Helmut Hillebrand, Kevin P. Kirkman, Johannes M. H. Knops, Ramesh Laungani, Eric M. Lind, Andrew S. MacDougall, Rebecca L. McCulley, Charles E. Mitchell, Joslin L. Moore, John W. Morgan, John L. Orrock, Pablo L. Peri, Suzanne M. Prober, Anita C. Risch, Martin Schuetz, Karina L. Speziale, Rachel J. Standish, Lauren L. Sullivan, Glenda M. Wardle, Ryan J. Williams, Louie H. Yang
Surface-water quality and suspended-sediment quantity and quality within the Big River Basin, southeastern Missouri, 2011-13 Surface-water quality and suspended-sediment quantity and quality within the Big River Basin, southeastern Missouri, 2011-13
Missouri was the leading producer of lead in the United States—as well as the world—for more than a century. One of the lead sources is known as the Old Lead Belt, located in southeast Missouri. The primary ore mineral in the region is galena, which can be found both in surface deposits and underground as deep as 200 feet. More than 8.5 million tons of lead were produced from the Old...
Authors
Miya N. Barr
Survival and growth of freshwater pulmonate and nonpulmonate snails in 28-day exposures to copper, ammonia, and pentachlorophenol Survival and growth of freshwater pulmonate and nonpulmonate snails in 28-day exposures to copper, ammonia, and pentachlorophenol
We performed toxicity tests with two species of pulmonate snails (Lymnaea stagnalis and Physa gyrina) and four taxa of nonpulmonate snails in the family Hydrobiidae (Pyrgulopsis robusta,Taylorconcha serpenticola, Fluminicola sp., and Fontigens aldrichi). Snails were maintained in static-renewal or recirculating culture systems with adults removed periodically to isolate cohorts of...
Authors
John M. Besser, Rebecca A. Dorman, Douglas K. Hardesty, Christopher G. Ingersoll
Development of working hypotheses linking management of the Missouri River to population dynamics of Scaphirhynchus albus (pallid sturgeon) Development of working hypotheses linking management of the Missouri River to population dynamics of Scaphirhynchus albus (pallid sturgeon)
This report documents a process of filtering of hypotheses that relate Missouri River Scaphirhynchus albus (pallid sturgeon) population dynamics to management actions including flow alterations, channel reconfigurations, and pallid sturgeon population augmentation. The filtering process was a partnership among U.S. Geological Survey, U.S. Army Corps of Engineers, and U.S. Fish and...
Authors
Robert B. Jacobson, Michael J. Parsley, Mandy L. Annis, Michael E. Colvin, Timothy L. Welker, Daniel A. James