Skip to main content
U.S. flag

An official website of the United States government

Publications

Publications from USGS science centers throughout the Southeast Region.

Filter Total Items: 10379

Application of ground-truth for classification and quantification of bird movements on migratory bird habitat initiative sites in southwest Louisiana: final report Application of ground-truth for classification and quantification of bird movements on migratory bird habitat initiative sites in southwest Louisiana: final report

This project was initiated to assess migrating and wintering bird use of lands enrolled in the Natural Resources Conservation Service’s (NRCS) Migratory Bird Habitat Initiative (MBHI). The MBHI program was developed in response to the Deepwater Horizon oil spill in 2010, with the goal of improving/creating habitat for waterbirds affected by the spill. In collaboration with the University...
Authors
Wylie C. Barrow, Michael J. Baldwin, Lori A. Randall, John Pitre, Kyle J. Dudley

ECALS: Loading studies interim report July 2013 ECALS: Loading studies interim report July 2013

Since the initial detection of Asian carp moving up the Mississippi Basin, the potential for invasion of the Great Lakes by Silver Carp and Bighead Carp has been a major concern to stakeholders. To combat this problem, sampling for environmental DNA (eDNA) is used to monitor the waterways near Lake Michigan. This monitoring area includes the Chicago Area Waterways System (CAWS) and the...
Authors
Katy E. Klymus, Cathy A. Richter, Duane Chapman, Craig P. Paukert

Changes to oak woodland stand structure and ground flora composition caused by thinning and burning Changes to oak woodland stand structure and ground flora composition caused by thinning and burning

Our objective was to quantify the cumulative effects of prescribed burning and thinning on forest stocking and species composition at a woodland restoration experiment site in the Ozark Highlands of Missouri. Our study used four treatments (burn, harvest, harvest and burn, control) on three slope position and aspect combinations (south, north, ridge) replicated in three complete blocks
Authors
Carter O. Kinkead, John M. Kabrick, Michael C. Stambaugh, Keith W. Grabner

Groundwater flow cycling between a submarine spring and an inland fresh water spring Groundwater flow cycling between a submarine spring and an inland fresh water spring

Spring Creek Springs and Wakulla Springs are large first magnitude springs that derive water from the Upper Floridan Aquifer. The submarine Spring Creek Springs are located in a marine estuary and Wakulla Springs are located 18 km inland. Wakulla Springs has had a consistent increase in flow from the 1930s to the present. This increase is probably due to the rising sea level, which puts...
Authors
J. Hal Davis, Richard Verdi

Adaptive harvest management for the Svalbard population of pink-footed geese: cooperator report Adaptive harvest management for the Svalbard population of pink-footed geese: cooperator report

This document describes progress to date on the development of a harvest‐management strategy for maintaining pink‐footed goose abundance near their target level by providing for sustainable harvests in Norway and Denmark. Many goose populations in western Europe have increased dramatically in recent decades. The Svalbard population of pink‐footed geese (Anser brachyrhynchus) is a good...
Authors
Fred A. Johnson, Gitte H. Jensen, Jesper Madsen

Adaptive harvest management for the Svalbard population of pink-footed geese: a response to a review of the progress summary Adaptive harvest management for the Svalbard population of pink-footed geese: a response to a review of the progress summary

Herein we provide excerpts of the reviewers' comments and our response. We did not duplicate the portion of the reviewers' comments in which they summarized our findings.
Authors
Fred A. Johnson, Gitte H. Jensen, Jesper Madsen

TanA: a fluorogenic probe for thiaminase activity TanA: a fluorogenic probe for thiaminase activity

A fluorogenic thiamine analogue is presented as a fluorescent probe for thiaminase activity. The emission of the fluorophore is quenched by photoinduced electron transfer (PET) to the N-substituted pyridinium portion of the probe. Action of the enzyme releases the free pyridine group causing a substantial increase in fluorescence.
Authors
Wanjun Zhu, James L. Zajicek, Donald E. Tillitt, Timothy E. Glass

Descriptions and characterizations of water-level data and groundwater flow for the Brewster Boulevard and Castle Hayne Aquifer Systems and the Tarawa Terrace Aquifer Descriptions and characterizations of water-level data and groundwater flow for the Brewster Boulevard and Castle Hayne Aquifer Systems and the Tarawa Terrace Aquifer

This supplement of Chapter A (Supplement 3) summarizes results of analyses of groundwater-level data and describes corresponding elements of groundwater flow such as vertical hydraulic gradients useful for groundwater-flow model calibration. Field data as well as theoretical concepts indicate that potentiometric surfaces within the study area are shown to resemble to a large degree a...
Authors
Robert E. Faye, L. Elliott Jones, René J. Suárez-Soto

Harmonizing multiple methods for reconstructing historical potential and reference evapotranspiration Harmonizing multiple methods for reconstructing historical potential and reference evapotranspiration

Potential evapotranspiration (PET) and reference evapotranspiration (RET) data are usually critical components of hydrologic analysis. Many different equations are available to estimate PET and RET. Most of these equations, such as the Priestley-Taylor and Penman- Monteith methods, rely on detailed meteorological data collected at ground-based weather stations. Few weather stations...
Authors
Getachew Belaineh, David Sumner, Edward Carter, David Clapp

Potential effects of sea-level rise on coastal wetlands in southeastern Louisiana Potential effects of sea-level rise on coastal wetlands in southeastern Louisiana

Coastal Louisiana wetlands contain about 37% of the estuarine herbaceous marshes in the conterminous United States. The long-term stability of coastal wetlands is often a function of a wetland's ability to maintain elevation equilibrium with mean sea level through processes such as primary production and sediment accretion. However, Louisiana has sustained more coastal wetland loss than...
Authors
Patty Glick, Jonathan Clough, Amy Polaczyk, Brady R. Couvillion, Brad Nunley

Confronting dynamics and uncertainty in optimal decision making for conservation Confronting dynamics and uncertainty in optimal decision making for conservation

The effectiveness of conservation efforts ultimately depends on the recognition that decision making, and the systems that it is designed to affect, are inherently dynamic and characterized by multiple sources of uncertainty. To cope with these challenges, conservation planners are increasingly turning to the tools of decision analysis, especially dynamic optimization methods. Here we...
Authors
Byron K. Williams, Fred A. Johnson
Was this page helpful?