Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16734
Primer registro de Eumops underwoodi (Molossidae) de Costa Rica Primer registro de Eumops underwoodi (Molossidae) de Costa Rica
No abstract available.
Authors
M.S. Foster, R. Aguilar
Effects of dietary aluminum, calcium, and phosphorus on egg and bone of European starlings Effects of dietary aluminum, calcium, and phosphorus on egg and bone of European starlings
Egg and bone of passerine birds nesting in acidified habitats may be affected by high levels of Al or P, or low levels of Ca. Nine treatments of three levels of dietary Al (target levels of 200, 1,000, and 5,000 μg/g) and three levels of Ca:P (target levels of NN = 1.3% Ca: 0.9% P; LL = 0.19 Ca:0.45 P; LH = 0.19 Ca: 1.65 P) were fed to 16–17 starling pairs during two breeding seasons...
Authors
A.K. Miles, C.E. Grue, G.W. Pendleton, J. H. Soares
Avian communities in riparian forests of different widths in Maryland and Delaware Avian communities in riparian forests of different widths in Maryland and Delaware
In agricultural landscapes, much of the remaining forest is in linear tracts along streams. These riparian forests provide habitat for forest birds, but their use by forest interior birds may depend on forest width. We conducted point-count surveys of birds in riparian forests on the Eastern shore of Maryland and Delaware to assess whether the presence of any species was dependent on...
Authors
C.M.E. Keller, C.S. Robbins, Jeff S. Hatfield
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