Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5568
Remote sensing methods for mapping the onset and progression of spartina alterniflora marsh dieback in coastal Louisiana Remote sensing methods for mapping the onset and progression of spartina alterniflora marsh dieback in coastal Louisiana
No abstract available.
Authors
Amina Rangoonwala, Elijah Ramsey III, Gene Nelson
Research plan and preliminary results: A field research site for emerging contaminants in Iowa Research plan and preliminary results: A field research site for emerging contaminants in Iowa
Research has recently documented the prevalence of a wide variety of pharmaceuticals and other emerging contaminants (ECs) in streams across the United States. Wastewater treatment plants (WWTPs) have been found to be an important source and collection point of ECs to streams as many ECs are incompletely removed during treatment. To investigate the complex in-stream processes (e.g...
Authors
Douglas J. Schnoebelen, Dana W. Kolpin, Larry B. Barber, Edward T. Furlong, Michael Meyer, M. Skopec
Multimodeling: new approaches for linking ecological models Multimodeling: new approaches for linking ecological models
The Everglades region of South Florida presents one of the major natural system management challenges facing the United States. With its assortment of alligators, crocodiles, manatees, panthers, large mixed flocks of wading birds, highly diverse subtropical flora, and sea of sawgrass, the ecosystem is unique in this country (Davis and Ogden 1994). The region is also perhaps the largest...
Authors
Louis J. Gross, Donald L. DeAngelis
Constraining rates and trends of historical wetland loss, Mississippi River Delta Plain, south-central Louisiana Constraining rates and trends of historical wetland loss, Mississippi River Delta Plain, south-central Louisiana
The timing, magnitude, and rate of wetland loss were described for five wetland-loss hotspots in the Terrebonne Basin of the Mississippi River delta plain. Land and water areas were mapped for 34 dates between 1956 and 2004 from historical National Wetlands Inventory (NWI) datasets, aerial photographs, and Landsat Thematic Mapper (TM) satellite images. Since 1956, the emergent land area...
Authors
Julie Bernier, Robert A. Morton, John A. Barras
Archive of digital boomer and chirp seismic reflection data collected during USGS Cruise 03SCC03 in Lake Pelto and Timbalier and Terrebonne Bays, Louisiana, September 2003 Archive of digital boomer and chirp seismic reflection data collected during USGS Cruise 03SCC03 in Lake Pelto and Timbalier and Terrebonne Bays, Louisiana, September 2003
No abstract available.
Authors
Karynna Calderon
Archive of digital boomer and chirp seismic reflection data collected during USGS Cruise 04SCC01 in Terrebonne, Timbalier, and Barataria Bays and Lake Pelto, Louisiana, June and July 2004 Archive of digital boomer and chirp seismic reflection data collected during USGS Cruise 04SCC01 in Terrebonne, Timbalier, and Barataria Bays and Lake Pelto, Louisiana, June and July 2004
No abstract available.
Authors
Karynna Calderon
Triazines Triazines
Abstract not supplied at this time
Authors
Timothy S. Gross, R. Heath Rauschenberger
Regional and local species richness in an insular environment: Serpentine plants in California Regional and local species richness in an insular environment: Serpentine plants in California
We asked how the richness of the specialized (endemic) flora of serpentine rock outcrops in California varies at both the regional and local scales. Our study had two goals: first, to test whether endemic richness is affected by spatial habitat structure (e.g., regional serpentine area, local serpentine outcrop area, regional and local measures of outcrop isolation), and second, to...
Authors
S. Harrison, H.D. Safford, J.B. Grace, J.H. Viers, K.F. Davies
Genetic structure of natural and restored shoalgrass Halodule wrightii populations in the NW Gulf of Mexico Genetic structure of natural and restored shoalgrass Halodule wrightii populations in the NW Gulf of Mexico
The decline of seagrass communities worldwide has sparked an urgent need for effective restoration strategies, which require a working knowledge of population genetic structure. Halodule wrighti is a common seagrass of the Caribbean region that is being restored to areas of the Gulf of Mexico, yet little is known of its population genetics. This study provides an assessment of individual...
Authors
S.E. Travis, P. Sheridan
Phylogeography, phylogeny and hybridization in trichechid sirenians: Implications for manatee conservation Phylogeography, phylogeny and hybridization in trichechid sirenians: Implications for manatee conservation
The three living species of manatees, West Indian (Trichechus manatus), Amazonian (Trichechus inunguis) and West African (Trichechus senegalensis), are distributed across the shallow tropical and subtropical waters of America and the western coast of Africa. We have sequenced the mitochondrial DNA control region in 330 Trichechus to compare their phylogeographic patterns. In T. manatus...
Authors
J. A. Vianna, Robert K. Bonde, S. Caballero, J. P. Giraldo, R. P. Lima, A. Clark, M. Marmontel, B. Morales-Vela, M. J. De Souza, L. Parr, M. A. Rodriguez-Lopez, A. A. Mignucci-Giannoni, J. A. Powell, F. R. Santos
A structural equation model analysis of postfire plant diversity in California shrublands A structural equation model analysis of postfire plant diversity in California shrublands
This study investigates patterns of plant diversity following wildfires in fire‐prone shrublands of California, seeks to understand those patterns in terms of both local and landscape factors, and considers the implications for fire management. Ninety study sites were established following extensive wildfires in 1993, and 1000‐m2 plots were used to sample a variety of parameters. Data on...
Authors
J.B. Grace, Jon E. Keeley