Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16786
Food habits of mute swans in the Chesapeake Bay
Unlike the tundra swan (Cygnus columbianus) that migrate to the Bay for the winter, the mute swan (Cygnus olor) is a year long resident and therefore has raised concerns among research managers over reports of conflicts with nesting native water birds and the consumption of submerged aquatic vegetation (SAV). Although data on the reduction of SAV by nesting mute swans and their offspring during t
Authors
M. C. Perry, P.C. Osenton, E.J.R. Lohnes
Modeling survival and movement of resident giant Canada goose populations in the Atlantic flyway
Distribution of resident giant Canada geese (Branta canadensis maxima) has changed markedly in the Atlantic Flyway in recent decades. This change may be related to habitat variation or to changes in hunting regulations. We attempt to assess impacts of hunting regulations on survival, movement, and harvest rate of Canada goose populations from Maine to South Carolina. During 15 June-31 July 1991
Authors
M.W. Miller, W. L. Kendall, J.B. Hestbeck
Some consequences of using counts of birds banded as indices to populations
In mist-net studies, it is often difficult to use capture-recapture methods to estimate number of birds present. Many investigators use number of birds captured as an index of population size. We investigate the consequences of using indices of bird abundance as surrogates for population size in hypothesis tests. Unless all of the birds present are captured, indices are biased estimates of loca
Authors
J.R. Sauer, W. A. Link
The mute swan, its status, behavior, and history in the U. K
For many years the mute swan has been considered a royal bird. It is a prominent resident throughout the United Kingdom (U.K.), often found on the inland waterways. Some people consider it to be a nonmigratory native bird because it doesn't tend to move large distances and doesn't often venture far from freshwater. A mute swan may often live out its life cycle in the same river valley in which i
Authors
E.J.R. Lohnes
Mute swans: Natural (?) environmental indicators
The rapid expansion of the Chesapeake Bay's population of feral mute swans (Cygnus olar), coupled with a dramatic Bay-wide decline in submerged aquatic vegetation (SAV), has fueled much of the current debate surrounding the need for a management plan to protect the aquatic food resources that are critical to many species native to the Bay. Crucial to this decision process is a sound understanding
Authors
D. Day
On the use of capture-recapture models in mist-net studies
Capture-recapture models provide a statistical framework for estimating population parameters from mist-net data. Although Cormack-Jolly-Seber and related models have recently been used to estimate survival rates of birds sampled with mist nets, we believe that the full potential for use of capture-recapture models has not been realized by many researchers involved in mist-net studies. We present
Authors
W. L. Kendall, J.R. Sauer, J. D. Nichols, R. Pradel, J. E. Hines
Environmental impacts associated with recreational horse riding
No abstract available.
Authors
D.E. Newsome, D.N. Cole, J. L. Marion
Golden-cheeked Warbler (Dendroica chrysoparia) in Central Texas: importance of dispersal toward persistence in a metapopulation
No abstract available.
Authors
M.W. Alldredge, J. S. Hatfield, D.D. Diamond, C.D. True
Houston toad (Bufo houstonensis) in Bastrop County, Texas: need for protecting multiple subpopulations
No abstract available.
Authors
J. S. Hatfield, A.H. Price, D.D. Diamond, C.D. True