Publications
Explore WARC's science publications.
Filter Total Items: 3374
Salvinia molesta: Around the World in 70 Years
No abstract available.
Authors
Colette C. Jacono, B. Pitman
Population dynamics and the ecological stability of obligate pollination mutualisms
Mutualistic interactions almost always produce both costs and benefits for each of the interacting species. It is the difference between gross benefits and costs that determines the net benefit and the per-capita effect on each of the interacting populations. For example, the net benefit of obligate pollinators, such as yucca and senita moths, to plants is determined by the difference between the
Authors
J. Nathaniel Holland, Donald L. DeAngelis
The U.S. National Amphibian Research and Monitoring Initiative and the role of protected areas
In response to concerns about the worldwide status of amphibians (Alford and Richards 1999; Bury 1999; Daszak et al. 1999; Houlahan et al. 2000), Congress in Fiscal Year 2000 provided initial support to agencies of the U.S. Department of the Interior for research and monitoring of amphibians. Most funds came to the U.S. Geological Survey (USGS), but additional funds for the U.S. Fish and Wildlife
Authors
Russell James Hall, Catherine A. Langtimm
The importance of competition in regulating plant species abundance along a salinity gradient
Current theories differ in their predictions concerning the effects of interspecific interactions on species growth and distribution along environmental gradients. In this study, we examined the influence of competition on species composition across a salinity gradient. This work involved three common fresh and brackish marsh species. The three species, Spartina patens, Sagittaria lancifolia, and
Authors
M. K. Greiner La Peyre, James B. Grace, E. Hahn, I.A. Mendelssohn
Climate change in the United States: Implications for fish and wildlife management
No abstract available.
Authors
Virginia Burkett
Interactions between fire and invasive plants in temperate grasslands of North America
A substantial number of invasive grasses, forbs and woody plants have invaded temperate grasslands in North America. Among the invading species are winter annuals, biennials, cool-season perennials, warm-season perennials, vines, shrubs, and trees. Many of these species have been deliberately introduced and widely planted; some are still used for range improvement, pastures, lawns, and as ornament
Authors
James B. Grace, Melinda D. Smith, S.L. Grace, Scott L. Collins, Thomas J. Stohlgren
Alexander von Humboldt (1769-1859): Contributions to knowledge of New World fishes
No abstract available.
Authors
Leo G. Nico
Ecological scale and its implications for freshwater fishes in the Florida Everglades
No abstract available.
Authors
J.C. Trexler, W.F. Loftus, F. Jordan, J.H. Chick, K. L. Kandl, T. C. McElroy, O. L. Bass
Morphometrics, sexual dimorphism, and growth in the Angonoka tortoise (Geochelone yniphora) of western Madagascar
The most recent description of the morphology of the rare endemic Madagascar tortoise,Geochelone yniphora was based on fewer than 20 specimens. We collected morphological data for 200 free‐ranging tortoises from five populations over a four‐year period. Tortoises ranged in size from 43.5 mm carapace length at hatching to a maximum of 481 mm in an adult male. We were able to develop a logistic regr
Authors
Lora L. Smith, Miguel Pedrono, Robert M. Dorazio, Jack Bishko
Natural history notes: Plethodon jordani (Jordan's Salamander). Vocalization
No abstract available.
Authors
K. G. Smith, William J. Barichivich
Manatee and seagrass habitat characterization in Puerto Rico
No abstract available.
Authors
James P. Reid, Dean E. Easton, W. Judson Kenworthy
Florida manatees: Perspectives on populations, pain, and protection
This overview has three related objectives. First, it provides simple documentation, descriptive summaries, and anecdotal accounts that demonstrate the extent to which maiming, and likely pain and suffering, occur in wild manatees as a result of strikes by boats. The chapter calls attention to the issues wounding raises for policy makers and managers involved with implementing boat speed zones, pa
Authors
Thomas J. O'Shea, Lynn W. Lefebvre, Cathy A. Beck