Publications
Explore WARC's science publications.
Filter Total Items: 3543
The interaction of spatial scale and predator-prey functional response The interaction of spatial scale and predator-prey functional response
Predator-prey models with a prey-dependent functional response have the property that the prey equilibrium value is determined only by predator characteristics. However, in observed natural systems (for instance, snail-periphyton interactions in streams) the equilibrium periphyton biomass has been shown experimentally to be influenced by both snail numbers and levels of available...
Authors
T.W. Blaine, D.L. DeAngelis
Modeling fish dynamics and effects of stress in a hydrologically pulsed ecosystem Modeling fish dynamics and effects of stress in a hydrologically pulsed ecosystem
Many wetlands undergo seasonal cycles in precipitation and water depth. This environmental seasonality is echoed in patterns of production of fish biomass, which, in turn, influence the phenology of other components of the food web, including wading birds. Human activities, such as drainage or other alterations of the hydrology, can exacerbate these natural cycles and result in...
Authors
D.L. DeAngelis, W.F. Loftus, J.C. Trexler, Robert E. Ulanowicz
Investigation into avian mortality in the Playa Lakes region of southeastern New Mexico: Final Report - June 1997 Investigation into avian mortality in the Playa Lakes region of southeastern New Mexico: Final Report - June 1997
This Final Report is a review of work on a cooperative study undertaken by the USGS Biological Resources Division's National Wildlife Health Center (NWHC) and National Wetlands Research Center (NWRC; formerly the Southern Science Center) from 1994 through 1997. The study was initiated at the request of the Bureau of Land Management (BLM), through a request to the former National...
Authors
F. Joshua Dein, Laurie A. Baeten, Melody K. Moore, Michael D. Samuel, Paul D. Miller, Christopher Murphy, Steven Sissler, Clinton W. Jeske, Joseph R. Jehl, J. S. Yaeger, B. Bauer, Shiela A. Mahoney
Status and restoration of the Etowah River, an imperiled Southern Appalachian Ecosystem Status and restoration of the Etowah River, an imperiled Southern Appalachian Ecosystem
Abstract not supplied at this time
Authors
N.M. Burkhead, S. J. Walsh, B. J. Freeman, J.D. Williams
The influence of vines on an oligohaline marsh community: Results of a removal and fertilization study The influence of vines on an oligohaline marsh community: Results of a removal and fertilization study
The effects of competitive suppression by vines on the non-vine plant community have received little attention in temperate habitats. This study investigated the impact vines have on their herbaceous hosts in a wetland community at two soil fertility levels. Plots in an oligohaline marsh were treated in a 2 x 2 factorial design with vine removal and fertilization over two growing seasons...
Authors
L. Gough, J.B. Grace
Histological analysis of gonad development in zebra mussels (Bivalvia: Dreissenidae) from the Tennessee and Ohio Rivers Histological analysis of gonad development in zebra mussels (Bivalvia: Dreissenidae) from the Tennessee and Ohio Rivers
No abstract available.
Authors
K. J. Brinkley, J. Sickel, L. Duobinis-Gray, J. Herod
Coastal wetlands and climate change Coastal wetlands and climate change
Abstract has not been submitted
Authors
G.R. Guntenspergen, B.A. Vairin, V.R. Burkett, D. McGrath
Facing the challenges of invasive alien species in North America Facing the challenges of invasive alien species in North America
Abstract not supplied at this time
Authors
I.E. Effort, C. Macias Garcia, J.D. Williams
Natural history notes: Scinella lateralis. (Ground Skink). Predation Natural history notes: Scinella lateralis. (Ground Skink). Predation
Abstract not supplied at this time
Authors
C.K. Dodd, Marian L. Griffey
Relative costs of prebasic and prealternate molts for male blue-winged teal Relative costs of prebasic and prealternate molts for male blue-winged teal
We compared masses of definitive basic and alternate plumages of male Blue-winged Teal (Anas discors) to evaluate the hypothesis that nutritional investments in basic and alternate plumages are related to the duration that plumages are worn and to assess the relative costs of prebasic and prealternate molts. Because these plumages are worn by males for approximately equal durations, we...
Authors
W.L. Hohman, S.W. Manley, D. Richard
Long-term growth trends of baldcypress (Taxodium distichum (L.) rich.) at Caddo Lake, Texas Long-term growth trends of baldcypress (Taxodium distichum (L.) rich.) at Caddo Lake, Texas
Caddo Lake, situated on the border of northeast Texas and northwest Louisiana, USA is a medium-sized lake dominated by stands of baldcypress (Taxodiwn distichum). A study of tree growth was initiated at Caddo Lake to address concerns about the health of the baldcypress ecosystem. The lake has been subjected to several dramatic water-level changes over the past 200 years, including water...
Authors
B. D. Keeland, P.J. Young