Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10383
Sources and Delivery of Nutrients to the Northwestern Gulf of Mexico from Streams in the South-Central United States Sources and Delivery of Nutrients to the Northwestern Gulf of Mexico from Streams in the South-Central United States
SPAtially Referenced Regressions On Watershed attributes (SPARROW) models were developed to estimate nutrient inputs [total nitrogen (TN) and total phosphorus (TP)] to the northwestern part of the Gulf of Mexico from streams in the South‐Central United States (U.S.). This area included drainages of the Lower Mississippi, Arkansas‐White‐Red, and Texas‐Gulf hydrologic regions. The models...
Authors
Richard A. Rebich, Natalie A. Houston, Scott V. Mize, Daniel Pearson, Patricia B. Ging, Hornig C. Evan
Multidisciplinary approaches to climate change questions Multidisciplinary approaches to climate change questions
Multidisciplinary approaches are required to address the complex environmental problems of our time. Solutions to climate change problems are good examples of situations requiring complex syntheses of ideas from a vast set of disciplines including science, engineering, social science, and the humanities. Unfortunately, most ecologists have narrow training, and are not equipped to bring...
Authors
Beth A. Middleton
Regulatory considerations for global transfer of cryopreserved fish gametes Regulatory considerations for global transfer of cryopreserved fish gametes
No abstract available.
Authors
Jill A. Jenkins
Testing competing hypotheses for chronology and intensity of lesser scaup molt during winter and spring migration Testing competing hypotheses for chronology and intensity of lesser scaup molt during winter and spring migration
We examined chronology and intensity of molt and their relationships to nutrient reserves (lipid and protein) of Lesser Scaup (Aythya affinisK/i>) to test predictions of two competing hypotheses. The "staggered cost" hypothesis states that contour-feather molt is nutritionally costly and should not occur during nutritionally costly periods of the annual cycle unless adequate nutrients...
Authors
Michael J. Anteau, Andrea C.E. Anteau, Alan D. Afton
Interlaboratory comparison of measurements of acid-volatile sulfide and simultaneously extracted nickel in spiked sediments Interlaboratory comparison of measurements of acid-volatile sulfide and simultaneously extracted nickel in spiked sediments
An interlaboratory comparison of acid-volatile sulfide (AVS) and simultaneously extracted nickel (SEM_Ni) measurements of sediments was conducted among five independent laboratories. Relative standard deviations for the seven test samples ranged from 5.6 to 71% (mean = 25%) for AVS and from 5.5 to 15% (mean = 10%) for SEM_Ni. These results are in stark contrast to a recently published...
Authors
William G. Brumbaugh, Chad R. Hammerschmidt, Luciana Zanella, Emily Rogevich, Gregory Salata, Radoslaw Puchalka
Daily MODIS data trends of hurricane-induced forest impact and early recovery Daily MODIS data trends of hurricane-induced forest impact and early recovery
We studied the use of daily satellite data from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensors to assess wetland forest damage and recovery from Hurricane Katrina (29 August 2005 landfall). Processed MODIS daily vegetation index (VI) trends were consistent with previously determined impact and recovery patterns provided by the "snapshot" 25 m Landsat Thematic Mapper...
Authors
Elijah W. Ramsey, Joseph Spruce, Amina Rangoonwala, Yukihiro Suzuoki, James Smoot, Jerry Gasser, Terri Bannister
The role of the Everglades Mangrove Ecotone Region (EMER) in regulating nutrient cycling and wetland productivity in South Florida The role of the Everglades Mangrove Ecotone Region (EMER) in regulating nutrient cycling and wetland productivity in South Florida
The authors summarize the main findings of the Florida Coastal Everglades Long-Term Ecological Research (FCE-LTER) program in the EMER, within the context of the Comprehensive Everglades Restoration Plan (CERP), to understand how regional processes, mediated by water flow, control population and ecosystem dynamics across the EMER landscape. Tree canopies with maximum height
Authors
Victor H. Rivera-Monroy, Robert R. Twilley, Stephen E. Davis, Daniel L. Childers, Marc Simard, Randolph Chambers, Rudolf Jaffe, Joseph N. Boyer, David T. Rudnick, Keqi Zhang, Edward Castañeda-Moya, Sharon M. L. Ewe, Rene M. Price, Carlos Coronado-Molina, Michael Ross, Thomas J. Smith, Beatrice Michot, Ehab Meselhe, William Nuttle, Tiffany G. Troxler, Gregory B. Noe
Effects of brush management on the hydrologic budget and water quality in and adjacent to Honey Creek State Natural Area, Comal County, Texas, 2001-10 Effects of brush management on the hydrologic budget and water quality in and adjacent to Honey Creek State Natural Area, Comal County, Texas, 2001-10
The U.S. Geological Survey, in cooperation with the U.S. Department of Agriculture Natural Resources Conservation Service, the Edwards Region Grazing Lands Conservation Initiative, the Texas State Soil and Water Conservation Board, the San Antonio River Authority, the Edwards Aquifer Authority, Texas Parks and Wildlife, the Guadalupe Blanco River Authority, and the San Antonio Water...
Authors
J. Ryan Banta, Richard N. Slattery
The influence of the Atlantic Warm Pool on the Florida panhandle sea breeze The influence of the Atlantic Warm Pool on the Florida panhandle sea breeze
In this paper we examine the variations of the boreal summer season sea breeze circulation along the Florida panhandle coast from relatively high resolution (10 km) regional climate model integrations. The 23 year climatology (1979–2001) of the multidecadal dynamically downscaled simulations forced by the National Centers for Environmental Prediction–Department of Energy (NCEP‐DOE)...
Authors
Vasubandhu Misra, Lauren Moeller, Lydia Stefanova, Steven Chan, James J. O’Brien, Thomas J. Smith, Nathaniel Plant
Use of stable isotopes and mercury to assess trophic positions of black carp and other large fishes in the Red-Atchafalaya River system, Louisiana, USA Use of stable isotopes and mercury to assess trophic positions of black carp and other large fishes in the Red-Atchafalaya River system, Louisiana, USA
No abstract available.
Authors
L. Nico, A. Demopoulos, D. Gualtieri, C. Wieser