Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16743
The tools of the trade--library enhancement in developing countries The tools of the trade--library enhancement in developing countries
No abstract available.
Authors
M.S. Foster, M.A. Jenkinson, A. Allen
Recent distribution and status of nesting bald eagles in Baja California, Mexico Recent distribution and status of nesting bald eagles in Baja California, Mexico
We studied Bald Eagles(Haliaeetus leucocephalus) nesting in Baja California, Mexico, and vicinity from 1983-1993. The range of nesting Bald Eagles in Baja California has been reduced from a scattering of pairs along both the Pacific and Gulf sides to a remnant population in Magdalena Bay where no more than three pairs were found annually. Low numbers and a restricted distribution make...
Authors
Charles J. Henny, B. Conant, D. W. Anderson
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
Capture-recapture studies for multiple strata including non-markovian transitions Capture-recapture studies for multiple strata including non-markovian transitions
We consider capture-recapture studies where release and recapture data are available from each of a number of strata on every capture occasion. Strata may, for example, be geographic locations or physiological states. Movement of animals among strata occurs with unknown probabilities, and estimation of these unknown transition probabilities is the objective. We describe a computer...
Authors
C. Brownie, J.E. Hines, J.D. Nichols, K. H. Pollock, J.B. Hestbeck
Effects of acidification on metal accumulation by aquatic plants and invertebrates. 2. Wetlands, ponds and small lakes Effects of acidification on metal accumulation by aquatic plants and invertebrates. 2. Wetlands, ponds and small lakes
Compared were concentrations of Al, Cd, Ca, Cu, Fe, Pb, Mg, Mn, Hg, Ni, P, and Zn in water, plants, and aquatic invertebrates of wetlands, ponds, and small lakes in Maryland and Maine. The accumulation of metals by aquatic plants and insects and the concentration of metals in water were not greatly affected by pH. None of the metal concentrations in water significantly correlated with...
Authors
P.H. Albers, M.B. Camardese
Wolverine specimen from south-central Washington state Wolverine specimen from south-central Washington state
No abstract available.
Authors
L. J. Blus, L. Fitzner, R. E. Fitzner
Predicting the distribution of breeding forest birds in a fragmented landscape Predicting the distribution of breeding forest birds in a fragmented landscape
No abstract available.
Authors
D.K. Dawson, L.J. Darr, C.S. Robbins
Sediment toxicity testing: Comparison of methods and evaluation of influencing factors Sediment toxicity testing: Comparison of methods and evaluation of influencing factors
No abstract available.
Authors
P. V. Winger, P. J. Lasier
Population characteristics and trends in the Eastern Management Unit Population characteristics and trends in the Eastern Management Unit
No abstract available.
Authors
F.W. Martin, J.R. Sauer
Point counts of landbirds in bottomland hardwood forests of the Mississippi Alluvial Valley: How long and how many? Point counts of landbirds in bottomland hardwood forests of the Mississippi Alluvial Valley: How long and how many?
To quantify efficacy of point count sampling in bottomland hardwood forests, we examined the influence of point count duration on corresponding estimates of number of individuals and species recorded. To accomplish this we conducted a totalof 82 point counts 7 May-16 May 1992distributed among three habitats (Wet, Mesic, Dry) in each of three regions within the lower Mississippi Alluvial...
Authors
W.P. Smith, D.A. Wiedenfeld, P.B. Hanel, D.J. Twedt, R.P. Ford, R.J. Cooper
Twenty-year index to Journal of Mammalogy volumes 51-70 inclusive, 1970-1989 Twenty-year index to Journal of Mammalogy volumes 51-70 inclusive, 1970-1989
No abstract available.
Authors
M.D. Carleton, R.D. Fisher, A. L. Gardner, L.K. Gordon, H.L. Kafka, C.A. Ludwig, D.F. Schmidt
Water resources data, Pennsylvania, water year 1992. Volume 2. Susquehanna and Potomac River basins Water resources data, Pennsylvania, water year 1992. Volume 2. Susquehanna and Potomac River basins
Water resources data for the 1992 water year for Pennsylvania consist of records of discharge and water quality of streams; contents and elevations of lakes and reservoirs; and water levels and water quality of ground-water wells. This report, Volume 2, includes records from the Susquehanna and Potomac River basins. Specifically, it contains (1) discharge records for 85 continuous-record
Authors
R.R. Durlin, W.P. Schaffstall