Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16790
Evaluating a portable cylindrical bait trap to capture diamondback terrapins in salt marsh
Diamondback terrapins (Malaclemys terrapin) are currently in decline across much of their historical range, and demographic data on a regional scale are needed to identify where their populations are at greatest risk. Because terrapins residing in salt marshes are difficult to capture, we designed a cylindrical bait trap (CBT) that could be deployed in shallow tidal waters. From 2003 to 2006, tria
Authors
Paula F. P. Henry, G. Michael Haramis, Daniel D. Day
Ascent ability of brown trout, Salmo trutta, and two Iberian cyprinids − Iberian barbel, Luciobarbus bocagei, and northern straight-mouth nase, Pseudochondrostoma duriense − in a vertical slot fishway
Passage performance of brown trout (Salmo trutta), Iberian barbel (Luciobarbus bocagei), and northern straight-mouth nase (Pseudochondrostoma duriense) was investigated in a vertical slot fishway in the Porma River (Duero River basin, Spain) using PIT telemetry. We analysed the effects of different fishway discharges on motivation and passage success. Both cyprinid species ascended the fishway eas
Authors
Fco. Javier Sanz-Ronda, F.J. Bravo-Cordoba, J.F. Fuentes-Perez, Theodore R. Castro-Santos
Estimating time-dependent connectivity in marine systems
Hydrodynamic connectivity describes the sources and destinations of water parcels within a domain over a given time. When combined with biological models, it can be a powerful concept to explain the patterns of constituent dispersal within marine ecosystems. However, providing connectivity metrics for a given domain is a three-dimensional problem: two dimensions in space to define the sources and
Authors
Zafer Defne, Neil K. Ganju, Alfredo Aretxabaleta
Colored dissolved organic matter in shallow estuaries: relationships between carbon sources and light attenuation
Light availability is of primary importance to the ecological function of shallow estuaries. For example, benthic primary production by submerged aquatic vegetation is contingent upon light penetration to the seabed. A major component that attenuates light in estuaries is colored dissolved organic matter (CDOM). CDOM is often measured via a proxy, fluorescing dissolved organic matter (fDOM), due t
Authors
W.K. Oestreich, Neil K. Ganju, John W. Pohlman, Steven E. Suttles
A replacement name for Asthenes wyatti perijanus Phelps 1977
A recent near-complete phylogeny of the avian family Furnariidae (Derryberry et al. 2011) found a number of discrepancies between the phylogeny and the then-current taxonomy of the group, and several changes were proposed to reconcile the taxonomy of the family with the phylogeny. Among these was the merging of the genus Schizoeaca Cabanis 1873 into Asthenes Reichenbach 1853 (Derryberry et al. 201
Authors
R. Terry Chesser
Erosional and depositional history of the Atlantic passive margin as recorded in detrital zircon fission-track ages and lithic detritus in Atlantic Coastal plain sediments
Comparison of fission-track (FT) ages of detrital zircons recovered from Atlantic Coastal Plain sediments to FT ages of zircons from bedrock in source terranes in the Appalachians provides a key to understanding the provenance of the sediments and, in turn, the erosional and depositional history of the Atlantic passive margin.In Appalachian source terranes, the oldest zircon fission-track (ZFT) ag
Authors
C.W. Naeser, N.D. Naeser, Lucy E. Edwards, Robert E. Weems, C. Scott Southworth, Wayne L. Newell
Estimating golden-cheeked warbler immigration: Implications for the spatial scale of conservation
Understanding the factors that drive population dynamics is fundamental to species conservation and management. Since the golden-cheeked warbler Setophaga chrysoparia was first listed as endangered, much effort has taken place to monitor warbler abundance, occupancy, reproduction and survival. Yet, despite being directly related to local population dynamics, movement rates have not been estimated
Authors
A. Duarte, F.W. Weckerly, M. Schaub, Jeffrey S. Hatfield
A typology of time-scale mismatches and behavioral interventions to diagnose and solve conservation problems
Ecological systems often operate on time scales significantly longer or shorter than the time scales typical of human decision making, which causes substantial difficulty for conservation and management in socioecological systems. For example, invasive species may move faster than humans can diagnose problems and initiate solutions, and climate systems may exhibit long-term inertia and short-term
Authors
Robyn S. Wilson, David J. Hardisty, Rebecca S. Epanchin-Niell, Michael C. Runge, Kathryn L. Cottingham, Dean L. Urban, Lynn A. Maguire, Alan Hastings, Peter J. Mumby, Debra P. C. Peters
Density, distribution, and genetic structure of grizzly bears in the Cabinet-Yaak Ecosystem
The conservation status of the 2 threatened grizzly bear (Ursus arctos) populations in the Cabinet-Yaak Ecosystem (CYE) of northern Montana and Idaho had remained unchanged since designation in 1975; however, the current demographic status of these populations was uncertain. No rigorous data on population density and distribution or analysis of recent population genetic structure were available to
Authors
Katherine C. Kendall, Amy C. Macleod, Kristina L. Boyd, John Boulanger, J. Andrew Royle, Wayne F. Kasworm, David Paetkau, Michael F. Proctor, Tabitha A. Graves, Kim Annis
Greenhouse gas fluxes from salt marshes exposed to chronic nutrient enrichment
We assessed the impact of nutrient additions on greenhouse gas fluxes using dark static chambers in a microtidal and a macrotidal marsh along the coast of New Brunswick, Canada approximately monthly over a year. Both were experimentally fertilized for six years with varying levels of N and P. For unfertilized, N and NPK treatments, average yearly CO2 emissions (which represent only respiration) at
Authors
Gail L. Chmura, Lisa Kellman, Lee van Ardenne, Glenn R. Guntenspergen
Impacts of climate change on land-use and wetland productivity in the Prairie Pothole Region of North America
Wetland productivity in the Prairie Pothole Region (PPR) of North America is closely linked to climate. A warmer and drier climate, as predicted, will negatively affect the productivity of PPR wetlands and the services they provide. The effect of climate change on wetland productivity, however, will not only depend on natural processes (e.g., evapotranspiration), but also on human responses. Agric
Authors
Benjamin S. Rashford, Richard M. Adams, Jun Wu, Richard A. Voldseth, Glenn R. Guntenspergen, Brett Werner, W. Carter Johnson
Analysis of brook trout spatial behavior during passage attempts in corrugated culverts using near-infrared illumination video imagery
We used video recording and near-infrared illumination to document the spatial behavior of brook trout of various sizes attempting to pass corrugated culverts under different hydraulic conditions. Semi-automated image analysis was used to digitize fish position at high temporal resolution inside the culvert, which allowed calculation of various spatial behavior metrics, including instantaneous gro
Authors
Normand E. Bergeron, Pierre-Marc Constantin, Elsa Goerig, Theodore R. Castro-Santos