Publications
Explore WARC's science publications.
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Considerations for building climate-based species distribution models Considerations for building climate-based species distribution models
Climate plays an important role in the distribution of species. A given species may adjust to new conditions in-place, move to new areas with suitable climates, or go extinct. Scientists and conservation practitioners use mathematical models to predict the effects of future climate change on wildlife and plan for a biodiverse future. This 8-page fact sheet written by David N. Bucklin...
Authors
David N. Bucklin, Mathieu Basille, Stephanie S. Romanach, Laura A. Brandt, Frank J. Mazzotti, James I. Watling
Post-release monitoring of Antillean manatees: an assessment of the Brazilian rehabilitation and release programme Post-release monitoring of Antillean manatees: an assessment of the Brazilian rehabilitation and release programme
Mammalian reintroduction programmes frequently aim to reconnect isolated sub-populations and restore population viability. However, these long-term objectives are rarely evaluated due to the inadequacy of post-release monitoring. Here, we report the results of a unique long term telemetry-based monitoring programme for rehabilitated Antillean manatees (Trichechus manatus manatus)...
Authors
Iran C. Normande, Ana C. M. Malhado, James P. Reid, P.C. Viana, P. V. S. Savaget, R. A. Correia, F. O. Luna, R. J. Ladle
Learning and adaptation in waterfowl conservation: By chance or by design? Learning and adaptation in waterfowl conservation: By chance or by design?
The most recent revision of the North American Waterfowl Management Plan seeks to increase the adaptive capacity of the management enterprise to cope with accelerating changes in climate, land-use patterns, agency priorities, and the waterfowl and wetlands constituency. Institutional and cultural changes of the magnitude envisioned are necessarily slow, messy processes, involving many...
Authors
Fred A. Johnson, David J. Case, Dale H. Humburg
Greenhouse gas emissions from a created brackish marsh in eastern North Carolina Greenhouse gas emissions from a created brackish marsh in eastern North Carolina
Tidal marsh creation helps remediate global warming because tidal wetlands are especially proficient at sequestering carbon (C) in soils. However, greenhouse gas (GHG) losses can offset the climatic benefits gained from C storage depending on how these tidal marshes are constructed and managed. This study attempts to determine the GHG emissions from a 4–6 year old created brackish marsh...
Authors
Yo-Jin Shiau, Michael R. Burchell, Ken W. Krauss, François Birgand, Stephen W. Broome
Contemporary deposition and long-term accumulation of sediment and nutrients by tidal freshwater forested wetlands impacted by sea level rise Contemporary deposition and long-term accumulation of sediment and nutrients by tidal freshwater forested wetlands impacted by sea level rise
Contemporary deposition (artificial marker horizon, 3.5 years) and long-term accumulation rates (210Pb profiles, ~150 years) of sediment and associated carbon (C), nitrogen (N), and phosphorus (P) were measured in wetlands along the tidal Savannah and Waccamaw rivers in the southeastern USA. Four sites along each river spanned an upstream-to-downstream salinification gradient, from...
Authors
Gregory E. Noe, Cliff R. Hupp, Christopher E. Bernhardt, Ken W. Krauss
Barrier displacement on a neutral landscape: Towards a theory of continental biogeography Barrier displacement on a neutral landscape: Towards a theory of continental biogeography
Macroevolutionary theory posits three processes leading to lineage diversification and the formation of regional biotas: dispersal (species geographic range expansion), speciation (species lineage splitting), and extinction (species lineage termination). The Theory of Island Biogeography (TIB) predicts species richness values using just two of these processes; dispersal and extinction...
Authors
James S. Albert, Donald Schoolmaster, Victor Tagliacollo, Scott M. Duke-Sylvester
Mapping changing distributions of dominant species in oil-contaminated salt marshes of Louisiana using imaging spectroscopy Mapping changing distributions of dominant species in oil-contaminated salt marshes of Louisiana using imaging spectroscopy
The April 2010 Deepwater Horizon (DWH) oil spill was the largest coastal spill in U.S. history. Monitoring subsequent change in marsh plant community distributions is critical to assess ecosystem impacts and to establish future coastal management priorities. Strategically deployed airborne imaging spectrometers, like the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS), offer the...
Authors
Michael Beland, Dar A. Roberts, Seth H. Peterson, Trent W. Biggs, Raymond F. Kokaly, Sarai Piazza, Keely L. Roth, Shruti Khanna, Susan L. Ustin
Regulation of the hunting season as a tool for adaptive harvest management — First results for pink-footed geese Anser brachyrhynchus Regulation of the hunting season as a tool for adaptive harvest management — First results for pink-footed geese Anser brachyrhynchus
Adjustment of hunting season length is often used to regulate harvest of waterbirds but the effects are disputed. We describe the first results of season length extension on the harvest of the pink-footed goose, which has been selected as the first test case of adaptive harvest management of waterbirds in Europe. In Denmark, the season (previously 1 September to 31 December) was extended...
Authors
Jesper Madsen, Kevin K. Clausen, Thomas K. Christensen, Fred A. Johnson
Hydrology of flooded and wetland forests Hydrology of flooded and wetland forests
In this chapter we will examine the hydrology of forested areas that are subject to soil saturation by rain, groundwater, or surface flooding. They include mangroves and other tidal forests, the forested portions of peatlands, and tree dominated wetlands defined by the Ramsar Convention (Mathews 1993). They also include estuarine tidal forests, palustrine forested wetlands, and the...
Authors
T. M. Williams, Ken W. Krauss, T. Okruszko
StreamThermal: A software package for calculating thermal metrics from stream temperature data StreamThermal: A software package for calculating thermal metrics from stream temperature data
Improving quality and better availability of continuous stream temperature data allows natural resource managers, particularly in fisheries, to understand associations between different characteristics of stream thermal regimes and stream fishes. However, there is no convenient tool to efficiently characterize multiple metrics reflecting stream thermal regimes with the increasing amount...
Authors
Yin-Phan Tsang, Dana M. Infante, Jana S. Stewart, Lizhu Wang, Ralph Tingly, Darren Thornbrugh, Arthur Cooper, Daniel Wesley
Effects of salinity and flooding on post-hurricane regeneration potential in coastal wetland vegetation Effects of salinity and flooding on post-hurricane regeneration potential in coastal wetland vegetation
PREMISE OF THE STUDY: The nature of regeneration dynamics after hurricane flooding and salinity intrusion may play an important role in shaping coastal vegetation patterns. METHODS: The regeneration potentials of coastal species, types and gradients (wetland types from seaward to landward) were studied on the Delmarva Peninsula after Hurricane Sandy using seed bank assays to examine...
Authors
Beth A. Middleton
U.S. Geological Survey science strategy for highly pathogenic avian influenza in wildlife and the environment (2016–2020) U.S. Geological Survey science strategy for highly pathogenic avian influenza in wildlife and the environment (2016–2020)
Introduction Through the Science Strategy for Highly Pathogenic Avian Influenza (HPAI) in Wildlife and the Environment, the USGS will assess avian influenza (AI) dynamics in an ecological context to inform decisions made by resource managers and policymakers from the local to national level. Through collection of unbiased scientific information on the ecology of AI viruses and wildlife...
Authors
M. Camille Harris, John M. Pearce, Diann J. Prosser, C. LeAnn White, A. Keith Miles, Jonathan M. Sleeman, Christopher J. Brand, James P. Cronin, Susan De La Cruz, Christine L. Densmore, Thomas W. Doyle, Robert J. Dusek, Joseph P. Fleskes, Paul L. Flint, Gerald F. Guala, Jeffrey S. Hall, Laura E. Hubbard, Randall J. Hunt, S. Ip, Rachel A. Katz, Kevin W. Laurent, Mark P. Miller, Mark D. Munn, Andrew M. Ramey, Kevin D. Richards, Robin E. Russell, Joel P. Stokdyk, John Y. Takekawa, Daniel P. Walsh