Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10379
Stratospheric microbiology at 20 km over the Pacific Ocean Stratospheric microbiology at 20 km over the Pacific Ocean
An aerobiology sampling flight at 20 km was conducted on 28 April 2008 over the Pacific Ocean (36.5° N, 118–149° W), a period of time that coincided with the movement of Asian dust across the ocean. The aim of this study was to confirm the presence of viable bacteria and fungi within a transoceanic, atmospheric bridge and to improve the resolution of flight hardware processing techniques...
Authors
David J. Smith, Dale W. Griffin, Andrew C. Schuerger
Regional estimates of ecological services derived from U.S. Department of Agriculture conservation programs in the Mississippi Alluvial Valley Regional estimates of ecological services derived from U.S. Department of Agriculture conservation programs in the Mississippi Alluvial Valley
The Mississippi Alluvial Valley (MAV) is the Nation?s largest floodplain and this once predominantly forested ecosystem provided significant habitat for a diverse flora and fauna, sequestered carbon in trees and soil, and stored floodwater, sediments, and nutrients within the floodplain. This landscape has been substantially altered by the conversion of nearly 75% of the riparian forests
Authors
Stephen P. Faulkner, Michael J. Baldwin, Wylie C. Barrow, Hardin Waddle, Bobby D. Keeland, Susan C. Walls, Dale James, Tom Moorman
Sampling and analysis of emerging pollutants Sampling and analysis of emerging pollutants
No abstract available.
Authors
Tammy L. Jones-Lepp, David A. Alvarez
Words matter: Recommendations for clarifying coral disease nomenclature and terminology Words matter: Recommendations for clarifying coral disease nomenclature and terminology
Coral diseases have caused significant losses on Caribbean reefs and are becoming a greater concern in the Pacific. Progress in coral disease research requires collaboration and communication among experts from many different disciplines. The lack of consistency in the use of terms and names in the recent scientific literature reflects the absence of an authority for naming coral...
Authors
Caroline S. Rogers
Fish population dynamics in a seasonally varying wetland Fish population dynamics in a seasonally varying wetland
Small fishes in seasonally flooded environments such as the Everglades are capable of spreading into newly flooded areas and building up substantial biomass. Passive drift cannot account for the rapidity of observed population expansions. To test the reaction-diffusion mechanism for spread of the fish, we estimated their diffusion coefficient and applied a reaction-diffusion model. This...
Authors
Donald L. DeAngelis, Joel C. Trexler, Chris Cosner, Adam Obaza, Fred Jopp
Climate change effects on an endemic-rich edaphic flora: resurveying Robert H. Whittaker's Siskiyou sites (Oregon, USA) Climate change effects on an endemic-rich edaphic flora: resurveying Robert H. Whittaker's Siskiyou sites (Oregon, USA)
Species with relatively narrow niches, such as plants restricted (endemic) to particular soils, may be especially vulnerable to extinction under a changing climate due to the enhanced difficulty they face in migrating to suitable new sites. To test for community-level effects of climate change, and to compare such effects in a highly endemic-rich flora on unproductive serpentine soils vs...
Authors
Ellen Ingman Damschen, Susan Harrison, James B. Grace
Challenges and opportunities for integrating lake ecosystem modelling approaches Challenges and opportunities for integrating lake ecosystem modelling approaches
A large number and wide variety of lake ecosystem models have been developed and published during the past four decades. We identify two challenges for making further progress in this field. One such challenge is to avoid developing more models largely following the concept of others (‘reinventing the wheel’). The other challenge is to avoid focusing on only one type of model, while...
Authors
Wolf M. Mooij, Dennis Trolle, Erik Jeppesen, George Arhonditsis, Pavel V. Belolipetsky, Deonatus B.R. Chitamwebwa, Andrey G. Degermendzhy, Donald L. DeAngelis, Lisette N. De Senerpont Domis, Andrea S. Downing, J. Alex Elliott, Carlos Ruberto Fragoso, Ursula Gaedke, Svetlana N. Genova, Ramesh D. Gulati, Lars Hakanson, David P. Hamilton, Matthew R. Hipsey, Jochem ’t Hoen, Stephan Hulsmann, F. Hans Los, Vardit Makler-Pick, Thomas Petzoldt, Igor G. Prokopkin, Karsten Rinke, Sebastiaan A. Schep, Koji Tominaga, Anne A. Van Dam, Egbert H. Van Nes, Scott A. Wells, Jan H. Janse
Corals as climate recorders Corals as climate recorders
The U.S. Geological Survey (USGS) Coral Reef Ecosystem Studies (CREST) Project is analyzing corals from various sites in the Caribbean region, Dry Tortugas National Park, Biscayne National Park, other areas of the Florida Keys, and the Virgin Islands. The objective of this project is to develop records of past environmental change to better our understanding of climate variability. The...
Authors
Jennifer A. Flannery, Richard Z. Poore
EAARL Coastal Topography-Eastern Florida, Post-Hurricane Jeanne, 2004: First Surface EAARL Coastal Topography-Eastern Florida, Post-Hurricane Jeanne, 2004: First Surface
These remotely sensed, geographically referenced elevation measurements of lidar-derived first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highly...
Authors
Xan Fredericks, Amar Nayegandhi, J.M. Bonisteel-Cormier, C. W. Wright, A. H. Sallenger, J. C. Brock, E.S. Klipp, D.B. Nagle
Effects of ocean acidification and sea-level rise on coral reefs Effects of ocean acidification and sea-level rise on coral reefs
U.S. Geological Survey (USGS) scientists are developing comprehensive records of historical and modern coral reef growth and calcification rates relative to changing seawater chemistry resulting from increasing atmospheric CO2 from the pre-industrial period to the present. These records will provide the scientific foundation for predicting future impacts of ocean acidification and sea...
Authors
K. K. Yates, R.P. Moyer
Physiological response of wild dugongs (Dugong dugon) to out-of-water sampling for health assessment Physiological response of wild dugongs (Dugong dugon) to out-of-water sampling for health assessment
The dugong (Dugong dugon) is a vulnerable marine mammal with large populations living in urban Queensland waters. A mark-recapture program for wild dugongs has been ongoing in southern Queensland since 2001. This program has involved capture and in-water sampling of more than 700 dugongs where animals have been held at the water surface for 5 min to be gene-tagged, measured, and biopsied...
Authors
Janet M. Lanyon, Helen L. Sneath, Trevor Long, Robert K. Bonde
Detecting the spatial and temporal variability of chlorophyll-a concentration and total suspended solids in Apalachicola Bay, Florida using MODIS imagery Detecting the spatial and temporal variability of chlorophyll-a concentration and total suspended solids in Apalachicola Bay, Florida using MODIS imagery
Apalachicola Bay, Florida, accounts for 90% of Florida's and 10% of the nation's eastern oyster (Crassostrea virginica) harvesting. Chlorophyll-a concentration and total suspended solids (TSS) are two important water quality variables, among other environmental factors such as salinity, for eastern oyster production in Apalachicola Bay. In this research, we developed regression models of...
Authors
Hongqing Wang, C.M. Hladik, W. Huang, K. Milla, L. Edmiston, M.A. Harwell, J.F. Schalles