Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16795
Dispersal of wolves (Canis lupus) in northeastern Minnesota, 1969-1989
We examined the dispersal patterns of radio-collared wolves (Canis lupus) from 21 packs in the Superior National Forest, Minnesota, from 1969 to 1989. A total of 316 wolves (542 wolf-years) were captured, radio-collared, and followed during 21 years of radio-tracking; 75 were identified as dispersers. Both sexes dispersed equally. Of the adults, yearlings, and pups, 8, 75, and 16%, respectively
Authors
E.M. Gese, L. D. Mech
A new tern (Sterna) breeding record for Hawaii
No abstract available.
Authors
S. Conant, R. B. Clapp, L. Hiruki, B. Choy
Alder flycatcher in summer in the northern Virginia Piedmont
No abstract available.
Authors
R. B. Clapp
The identity of Pennant's 'Wapacuthu owl' and the subspecific name for the population of Bubo virginianus from the western Hudson Bay
The name Strix wapacuthu Gmelin, often used for the subspecies of Bubo virginianus west of Hudson Bay, cannot be associated with certainty with either B. virginianus or Nyctea scandiaca. The subspecific name of the population of B. virginianus from Mackenzie to central-eastern British Columbia and northern Ontario should be B. v. subarcticus Hoy.
Authors
M.R. Browning, R.C. Banks
Taxonomic review of the mangrove cuckoo, Coccyzus minor (Gmelin)
No abstract available.
Authors
R.C. Banks, R. Hole
Comments on the proposed conservation of the specific name Coccyzus euleri Cabanis, 1873 (Aves, Cuculiformes)
No abstract available.
Authors
R.C. Banks
Bird population and habitat surveys in urban areas
Breeding bird populations in six habitats in Columbia. MD, were studied to develop procedures suitable for measuring bird use of residential areas and to identify habitat characteristics that define the distribution of various common bird species. A procedure to measure bird use based on 4-min transect counts on plots measuring 91 m ? 91 m proved better than point counts. Transect counts reduced
Authors
R.M. DeGraaf, A. D. Geis, P.A. Healy
Mammal mortality at Arizona, California, and Nevada gold mines using cyanide extraction
Five-hundred nineteen mammals were reported dead at cyanide-extraction gold mines in Arizona [USA], California, and Nevada from 1984 through 1989. Most numerous were rodents (34.9%) and bats (33.7%); 'bat' was the most often reported category among 24 species or species groups. There are an estimated 160 cyanide-extraction gold mines in these three states, and the number is increasing. Ten mammal
Authors
D. R. Clark, R. L. Hothem
The characterization of axenic culture systems suitable for plant propagation and experimental studies of the submersed aquatic angiosperm Potamogeton pectinatus (Sago pondweed)
Clonal lines of the submersed aquatic angiospermPotamogeton pectinatus were grown in three culture systems. The first, which used sucrose as a carbon source in a liquid medium, supported vigorous vegetative growth and can be used to propagate large numbers of plants in axenic conditions. In this culture system, plants were responsive to increasings photosynthetically active radiation (PAR) photon
Authors
M.S. Ailstock, W. J. Fleming, T.J. Cooke
Trends in North American small mammals found in common barn-owl (Tyto alba) dietary studies
Data on mammals were compiled from published studies of common barn-owl (Tyto alba) pellets. Mammalian composition of pellet samples was analyzed within geographic regions in regard to year, mean annual precipitation, latitude, and number of individual mammals in the sample. Percentages of individuals in pellets that were shrews increased whereas the percentages of rodents decreased with greater
Authors
D. R. Clark, C. M. Bunck