Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16727
A 4-year study of invasive and native spider populations in Maine A 4-year study of invasive and native spider populations in Maine
Invasive spiders pose potential threats to native spiders. In 2002, the European spider Linyphia triangularis (Clerck, 1757) (Araneae: Linyphiidae) was discovered in all but one county in Maine. At Acadia National Park, we conducted a 4-year study of L. triangularis and three native linyphiid species of a similar size (Frontinella communis (Hentz, 1850), Pityohyphantes subarcticus...
Authors
Elizabeth M. Jakob, Adam H. Porter, Howard Ginsberg, Julie V. Bednarski, Jeremy Houser
Geophysical data from offshore of the Gulf Islands National Seashore, Cat Island to Western Horn Island, Mississippi Geophysical data from offshore of the Gulf Islands National Seashore, Cat Island to Western Horn Island, Mississippi
This report contains the geophysical and geospatial data that were collected along the western offshore side of the Gulf Islands of Mississippi on the research vessel Tommy Munro during two cruises in 2010. Geophysical data were collected by the U.S. Geological Survey in Woods Hole, Massachusetts, and St. Petersburg, Forida, in cooperation with the U.S. Army Corps of Engineers Mobile...
Authors
E.A. Pendleton, W. E. Baldwin, W. W. Danforth, N. T. DeWitt, A.S. Forde, D.S. Foster, K.W. Kelso, W.R. Pfeiffer, A.M. Turecek, J. G. Flocks, D.C. Twichell
How restructuring river connectivity changes freshwater fish biodiversity and biogeography How restructuring river connectivity changes freshwater fish biodiversity and biogeography
Interbasin water transfer projects, in which river connectivity is restructured via man-made canals, are an increasingly popular solution to address the spatial mismatch between supply and demand of fresh water. However, the ecological consequences of such restructuring remain largely unexplored, and there are no general theoretical guidelines from which to derive these expectations...
Authors
Heather L. Lynch, Evan H. Campbell Grant, Rachata Muneepeerakul, Muthukumarasamy Arunachalam, Ignacio Rodriguez-Iturbe, William F. Fagan
The shallow stratigraphy and sand resources offshore of the Mississippi Barrier Islands The shallow stratigraphy and sand resources offshore of the Mississippi Barrier Islands
Coastal Mississippi is protected by a series of barrier islands ranging in length from 10-25 kilometers that are less than 2 kilometers wide. The majority of these islands comprise the Gulf Islands National Seashore (GUIS), an ecologically diverse shoreline that provides habitat for wildlife including migratory birds and endangered animals. The majority of GUIS is submerged, and aquatic
Authors
David Twichell, Elizabeth A. Pendleton, Wayne Baldwin, David Foster, James Flocks, Kyle Kelso, Nancy DeWitt, William Pfeiffer, Arnell Forde, Jason Krick, John Baehr
Vanadium recycling in the United States in 2004 Vanadium recycling in the United States in 2004
As one of a series of reports that describe the recycling of metal commodities in the United States, this report discusses the flow of vanadium in the U.S. economy in 2004. This report includes a description of vanadium supply and demand in the United States and illustrates the extent of vanadium recycling and recycling trends. In 2004, apparent vanadium consumption, by end use, in the...
Authors
Thomas G. Goonan
Accuracy of flowmeters measuring horizontal groundwater flow in an unconsolidated aquifer simulator. Accuracy of flowmeters measuring horizontal groundwater flow in an unconsolidated aquifer simulator.
Borehole flowmeters that measure horizontal flow velocity and direction of groundwater flow are being increasingly applied to a wide variety of environmental problems. This study was carried out to evaluate the measurement accuracy of several types of flowmeters in an unconsolidated aquifer simulator. Flowmeter response to hydraulic gradient, aquifer properties, and well-screen...
Authors
E.R. Bayless, Wayne A. Mandell, James R. Ursic
Heightened exposure to parasites favors the evolution of immunity in brood parasitic cowbirds Heightened exposure to parasites favors the evolution of immunity in brood parasitic cowbirds
Immunologists and evolutionary biologists are interested in how the immune system evolves to fit an ecological niche. We studied the relationship between exposure to parasites and strength of immunity by investigating the response of two species of New World cowbirds (genus Molothrus, Icteridae), obligate brood parasites with contrasting life history strategies, to experimental arboviral...
Authors
Caldwell Hahn, William K. Reisen
Environmental factors that influence the location of crop agriculture in the conterminous United States Environmental factors that influence the location of crop agriculture in the conterminous United States
This report presents and describes high-resolution geospatial data identifying the range of environmental conditions that influence the location of cropped agricultural lands in the conterminous United States. Also presented are estimates of the extent of land where environmental constraints limit agricultural production (marginal land) and the extents of land where modifications...
Authors
Nancy T. Baker, Paul D. Capel
Assessing hypotheses about nesting site occupancy dynamics Assessing hypotheses about nesting site occupancy dynamics
Hypotheses about habitat selection developed in the evolutionary ecology framework assume that individuals, under some conditions, select breeding habitat based on expected fitness in different habitat. The relationship between habitat quality and fitness may be reflected by breeding success of individuals, which may in turn be used to assess habitat quality. Habitat quality may also be...
Authors
Florent Bled, J. Andrew Royle, Emmanuelle Cam
Surficial geologic map of the Elizabethtown 30' x 60' quadrangle, North Carolina Surficial geologic map of the Elizabethtown 30' x 60' quadrangle, North Carolina
The Elizabethtown 30' x 60' quadrangle is located in southeastern North Carolina between Fayetteville and Wilmington. Most of the area is flat to gently rolling, although steep slopes occur locally along some of the larger streams. Total relief in the area is slightly over 210 feet (ft), with elevations ranging from slightly less than 10 ft above sea level along the Black River (east of...
Authors
Robert E. Weems, William C. Lewis, E. Allen Crider
Detailed sections from auger holes in the Elizabethtown 1:100,000-scale quadrangle, North Carolina Detailed sections from auger holes in the Elizabethtown 1:100,000-scale quadrangle, North Carolina
The Elizabethtown 1:100,000 quadrangle is in the west-central part of the Coastal Plain of southeastern North Carolina. The Coastal Plain, in this region, consists mostly of unlithified sediments that range in age from Late Cretaceous to Holocene. These sediments lie with profound unconformity on complexly deformed metamorphic and igneous rocks similar to rocks found immediately to the...
Authors
Robert E. Weems, William C. Lewis, Joseph H. Murray, David B. Queen, Jeffrey B. Grey, Benjamin D. DeJong
Anthropocene streams and base-level controls from historic dams in the unglaciated mid-Atlantic region, USA Anthropocene streams and base-level controls from historic dams in the unglaciated mid-Atlantic region, USA
Recently, widespread valley-bottom damming for water power was identified as a primary control on valley sedimentation in the mid-Atlantic US during the late seventeenth to early twentieth century. The timing of damming coincided with that of accelerated upland erosion during post-European settlement land-use change. In this paper, we examine the impact of local drops in base level on...
Authors
Dorothy Merritts, Robert Walter, Michael Rahnis, Jeff Hartranft, Scott Cox, Allen Gellis, Noel Potter, William Hilgartner, Michael J. Langland, Lauren Manion, Caitlin Lippincott, Sauleh Siddiqui, Zain Rehman, Chris Scheid, Laura Kratz, Andrea Shilling, Matthew Jenschke, Katherine Datin, Elizabeth Cranmer, Austin Reed, Derek Matuszewski, Mark Voli, Erik Ohlson, Ali Neugebauer, Aakash Ahamed, Conor Neal, Allison Winter, Steven Becker