Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16964
Adhesive trapping II Adhesive trapping II
No abstract available.
Authors
G.H. Rodda, M. McCoid, T. H. Fritts
North American Breeding Bird Survey annual summary 1990-1991 North American Breeding Bird Survey annual summary 1990-1991
The North American Breeding Bird Survey (BBS) was used to estimate continental and regional changes in bird populations during 1989-1990 and 1990-1991, placing these short-term changes within the context of population trends since 1966. For the entire survey area, 51.7% of the species exhibited increases in population size during 1989-1990, reversing the decreasing tendency exhibited by...
Authors
B.G. Peterjohn, J.R. Sauer
Morphological, biochemical, and histopathological indices and contaminant burdens of cotton rats (Sigmodon hispidus) at three hazardous waste sites near Houston, Texas, USA Morphological, biochemical, and histopathological indices and contaminant burdens of cotton rats (Sigmodon hispidus) at three hazardous waste sites near Houston, Texas, USA
Male cotton rats (Sigmodon hispidus) were studied at three industrial waste sites near Houston, Texas, to determine whether various morphological, biochemical, and histopathological indices provided evidence of contaminant exposure and toxic insult. Only modest changes were detected in cotton rats residing at waste sites compared with reference sites. No single parameter was consistently...
Authors
Barnett A. Rattner, Edward L. Flickinger, D. J. Hoffman
Evaluation of three elevated mist-net systems for sampling birds Evaluation of three elevated mist-net systems for sampling birds
Three light-weight, low-canopy mist-net systems were developed and tested in dry tropical scrub, mangrove and forest habitats. One plastic (polyvinyl chloride) and two aluminum pole systems (with and without pulleys) were used to support mist nets to heights of up to 7.3 m. Although the aluminum telescoping-pole system (without pulleys) was expensive initially ( 79-141/unit (US)), its...
Authors
J.M. Meyers, K.L. Pardieck
The ninety-third Christmas Bird Count: OC MD Ocean City, MD The ninety-third Christmas Bird Count: OC MD Ocean City, MD
No abstract available.
Authors
C.S. Robbins
Environmental contaminants in canvasbacks wintering on San Francisco Bay, California Environmental contaminants in canvasbacks wintering on San Francisco Bay, California
The concentrations of 11 trace elements, 21 organochlorines, 13 polycyclic aromatic hydrocarbons, and 13 aliphatic hydrocarbons were determined in canvasbacks (Aythya valisineria) wintering on San Francisco Bay, California during 1988. With the exception of Se, concentrations of potentially toxic elements were low. Similarly, concentrations of most organic compounds were near or below...
Authors
A.K. Miles, H. M. Ohlendorf
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
Speculations on colonizing success of the African clawed frog, Xenopus laevis (Pipidae), in California Speculations on colonizing success of the African clawed frog, Xenopus laevis (Pipidae), in California
The African clawed frog has been established in California for over twenty years. During that period, populations have spread to most of the drainage systems in southern California. It is suggested that a suite of contributing factors, including morphological, behavioural, and biochemical predator avoidance strategies, and reproductive and feeding (cannibalism) strategies, have aided in...
Authors
M. J. McCoid, T. H. Fritts
Phyllorhynchus decurtatus Phyllorhynchus decurtatus
No abstract available.
Authors
R.J.R. McCleary, R.W. McDiarmid
A new species of a giant Thomasomys (Mammalia, Muridae, Sigmodontinae) from the Andes of north-central Per? A new species of a giant Thomasomys (Mammalia, Muridae, Sigmodontinae) from the Andes of north-central Per?
No abstract available.
Authors
L.M. Leo, A. L. Gardner
A new Thomasomys (Mammalia: Rodentia) from the Peruvian Andes A new Thomasomys (Mammalia: Rodentia) from the Peruvian Andes
No abstract available.
Authors
A. L. Gardner, M. Romo