Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16734
Hydrologic, chemical, and isotopic characterization of two small watersheds on Catoctin Mountain, north-central Maryland, U.S.A. Hydrologic, chemical, and isotopic characterization of two small watersheds on Catoctin Mountain, north-central Maryland, U.S.A.
Two small (100 ha) watersheds located on Catoctin Mountain in north-central Maryland were intensively instrumented in 1990 and have been hydrologically, chemically, and isotopically monitored for 3 years. Dissolved concentrations of major ions (Ca2+, Mg2+, Na+, K+, total AI, CI-, NO3-, SO42- , HCO3-, and SiO2) and stable isotopic (D and 18O) values have been analyzed for most types of...
Authors
Karen C. Rice, O.P. Bricker
Soybean meal hypersensitivity and effects on performance, nitrogen metabolism, immunological response and gastrointestinal histology of rainbow trout Soybean meal hypersensitivity and effects on performance, nitrogen metabolism, immunological response and gastrointestinal histology of rainbow trout
No abstract available.
Authors
G. L. Rumsey, P.R. Bowser
Immunostimulation and protection from diseases in rainbow trout by glucans given by injection or bath Immunostimulation and protection from diseases in rainbow trout by glucans given by injection or bath
No abstract available at this time.
Authors
D. P. Anderson, G. Jeney
Use of stable isotope ratios to discriminate dietary components of free-ranging animals: An example with Chesapeake Bay canvasbacks Use of stable isotope ratios to discriminate dietary components of free-ranging animals: An example with Chesapeake Bay canvasbacks
No abstract available.
Authors
G.M. Haramis, Dennis G. Jorde, P. N. Klein, S.A. Macko, B.S. Walker
Prey escaping wolves, Canis lupus, despite close proximity Prey escaping wolves, Canis lupus, despite close proximity
We describe attacks by wolf (Canis lupus) packs in Minnesota on a white-tailed deer (Odocoileus virginianus) and a moose (Alces alces) in which wolves were within contact distance of the prey but in which the prey escaped.
Authors
M.E. Nelson, L.D. Mech
Male Kirtland's warbler with incubation patch Male Kirtland's warbler with incubation patch
No abstract available.
Authors
P.W. Sykes, Carol I. Bocetti, L.A. Moore
Sex and age identification of palila Sex and age identification of palila
Methods to sex and age Palila (Loxioides bailleui), an endangered Hawaiian finch restricted to subalpine woodlands on Hawai'i, were identified on the basis of measurements and plumage characteristics of 17 museum specimens and 96 known-age, live Palila. Palila undergo a single annual molt during September-December following the breeding season. Presence of a complete or partial wingbar
Authors
J.J. Jeffrey, S.G. Fancy, G.D. Lindsey, P.C. Banko, T.K. Pratt, J.D. Jacobi
Phyllorhynchus Stejneger, leaf-nosed snakes Phyllorhynchus Stejneger, leaf-nosed snakes
No abstract available.
Authors
R.W. McDiarmid, R.J.R. McCleary
Identifying sex and age of apapane and iiwi on Hawaii Identifying sex and age of apapane and iiwi on Hawaii
Methods to determine the sex and age of Apapane (Himatione sanguinea) and Iiwi (Vestiaria coccinea) were developed on the basis of 189 museum specimens and 91 live birds captured in mist nets on the Island of Hawaii (USA). Both species retain all juvenal primaries and some juvenal secondaries and body feathers after the first prebasic molt and attain full adult plumage after the second...
Authors
S.G. Fancy, T.K. Pratt, G.D. Lindsey, C.K. Harada, A.H. Parent, J.D. Jacobi
'Tool' use by the red-tailed hawk (Buteo jamaicensis) 'Tool' use by the red-tailed hawk (Buteo jamaicensis)
Perhaps the best documented example of regular tool use for a falconiform is the Egyptian Vulture (Neophron percnopterus) striking an Ostrich (Struthio camelus) egg with a stone (J. van Lawick-Goodall and H. van Lawick-Goodall 1966, Nature 212:1468-1469; R.K. Brooke 1979, Ostrich 50:257-258). Another species, the Lammergeier (Gypaetus barbatus), routinely drops bones on stone slabs to...
Authors
David H. Ellis, Shawn Brunson
Site tenacity of the endangered palila Site tenacity of the endangered palila
Strong site tenacity might prevent Palila (Loxioides bailleui), an endangered Hawaiian honeycreeper, from repopulating favorable habitats in their former range. We used radio telemetry during the nonbreeding and breeding seasons to study movements and dispersal rates of 57 Palila. All Palila remained in the study area, and home range sizes and movement distances were small relative to...
Authors
S.G. Fancy, R.T. Sugihara, J.J. Jeffrey, J.D. Jacobi