Publications
This is a list of publications written by Patuxent employees since Patuxent opened in 1939. To search for Patuxent's publications by author or title, please click below to go to the USGS Publication Warehouse.
Filter Total Items: 8128
Long-range transport of atmospheric organochlorine pollutants and air-sea exchange of hexachlorocyclohexane Long-range transport of atmospheric organochlorine pollutants and air-sea exchange of hexachlorocyclohexane
No abstract available.
Authors
D.A. Hinckley, T.F. Bidleman, C.P. Rice
Baseline levels of certain trace metals in sediment and biota Baseline levels of certain trace metals in sediment and biota
No abstract available.
Authors
A. J. Krynitsky, C.P. Rice, P.F. Roscigno
Results of the First Joint US-USSR Central Pacific Expedition (BERPAC), Autumn 1988 Results of the First Joint US-USSR Central Pacific Expedition (BERPAC), Autumn 1988
No abstract available.
Authors
J. F. Turner, H.J. O’Connor, Y.A. Izrael, A.V. Tsyban
Results of the Third Joint US-USSR Bering & Chukchi Seas Expedition (BERPAC), Summer 1988 Results of the Third Joint US-USSR Bering & Chukchi Seas Expedition (BERPAC), Summer 1988
No abstract available.
Authors
J. F. Turner, H.J. O’Connor, Y.A. Izrael, A.V. Tsyban
The impact of the introduction of the colubrid snake Boiga irregularis on Guam's lizards The impact of the introduction of the colubrid snake Boiga irregularis on Guam's lizards
The extirpation of Guam's forest avifauna has been attributed to the accidental introduction and subsequent irruption of the brown tree snake, Boiga irregularis. However, recent dietary studies of this nocturnal arboreal snake indicate that it now preys primarily on lizards, not birds. We evaluated the effect the snake has had on Guam's lizards by contrasting lizard communities on Guam...
Authors
G.H. Rodda, T. H. Fritts
Sampling techniques for an arboreal snake, Boiga irregularis Sampling techniques for an arboreal snake, Boiga irregularis
No abstract available.
Authors
G.H. Rodda, T. H. Fritts
Determining sex of eastern screech-owls using discriminant function analysis Determining sex of eastern screech-owls using discriminant function analysis
Seven morphometric characteristics and weight of males and females of a captive colony of Eastern Screech-Owls (Otus asio) were compared. Females were significantly larger than males in weight, total length, and length of tail, wing and bill. A discriminant function analysis based on weight, wing and tail length correctly identified the sex of 88% of the 77 birds.
Authors
D.G. Smith, Stanley N. Wiemeyer
Redhead duck behavior on lower Laguna Madre and adjacent ponds of southern Texas Redhead duck behavior on lower Laguna Madre and adjacent ponds of southern Texas
Behavior of redheads (Aythya americana) during winter was studied on the hypersaline lower Laguna Madre and adjacent freshwater to brackish water ponds of southern Texas. On Laguna Madre, feeding (46%) and sleeping (37%) were the most common behaviors. Redheads fed more during early morning (64%) than during the rest of the day (40%); feeding activity was negatively correlated with...
Authors
C. A. Mitchell, T. W. Custer, P.J. Zwank
Field testing the Wildlink Capture Collar on wolves Field testing the Wildlink Capture Collar on wolves
Seventeen Wildlink capture collars were tested 61 times on 18 gray wolves (Canis lupus) during 1989-1991 in the Superior National Forest of northeastern Minnesota. Overall success rate was 89%, and most failures were attributable to premature battery expiration. When batteries were changed ≤ every 2 months, 17 of 17 tests succeeded. With an upgraded version of the collar in which...
Authors
L. David Mech, Eric L. Geist
A study of the genetic relationships within and among wolf packs using DNA fingerprinting and mitochondrial DNA A study of the genetic relationships within and among wolf packs using DNA fingerprinting and mitochondrial DNA
DNA fingerprinting and mitochondrial DNA analyses have not been used in combination to study relatedness in natural populations. We present an approach that involves defining the mean fingerprint similarities among individuals thought to be unrelated because they have different mtDNA genotypes. Two classes of related individuals are identified by their distance in standard errors above...
Authors
Niles Lehman, Peter Clarkson, L. David Mech, Thomas J. Meier, Robert K. Wayne
Implanting radio transmitters in wintering canvasbacks Implanting radio transmitters in wintering canvasbacks
To conduct telemetry studies of wintering canvasbacks (Aythya valisineria) on Chesapeake Bay [Maryland, USA], we needed to devise a suitable method of radio transmitter attachment. We describe as aseptic, intraabdominal surgical technique, using the inhalation anesthetic isoflurane, to implant 20-g radio transmitters in free-ranging canvasbacks. We evaluated the technique over 3 winters...
Authors
Glenn H. Olsen, F. Joshua Dein, G. Michael Haramis, Dennis G. Jorde
Selection of wolf dens in relation to winter territories in northeastern Minnesota Selection of wolf dens in relation to winter territories in northeastern Minnesota
Locations of wolf (Canus lupus) dens in the Superior National Forest in northeastern Minnesota from 1969 through 1988 were analyzed in relation to winter territories. Dens situated within the central 60% of the territories were randomly located relative to territory centers. However, only 10.5% (2) of the dens were located within a 1-km-wide strip inside the territory boundaries...
Authors
P. Ciucci, L.D. Mech