Geographic distribution. Eleutherodactylus planirostris
Steve A. Johnson, Jennifer S. Staiger, William J. Barichivich
2003, Herpetological Review (34) 161
Abstract not supplied at this time...
Habitat destruction and alteration. Historical trends and future prospects for amphibians
C.K. Dodd Jr., L. L. Smith
R. D. Semlitsch, editor(s)
2003, Book chapter, Amphibian Conservation
Abstract not supplied at this time...
Coexistence in a multispecies assemblage of eagles in central Asia
Todd Katzner, E. Bragin, Steven T. Knick, Andrew T. Smith
2003, The Condor (105) 538-551
We evaluated factors that permit species coexistence in an exceptional assemblage of similar raptor species at the Naurzum Zapovednik (a national nature reserve) in north-central Kazakhstan. White-tailed Sea-Eagle (Haliaeetus albicilla), Imperial Eagle (Aquila heliaca), Golden Eagle (A. chrysaetos), and Steppe Eagle (A. nipalensis) all breed at the Zapovednik. Steppe Eagle...
Response of vegetation and breeding birds to the removal of cattle on the San Pedro River, Arizona (U.S.A.)
D. Krueper, Jonathan Bart, T. Rich
2003, Conservation Biology (17) 607-615
In late 1987 cattle were removed from the San Pedro Riparian National Conservation Area ( NCA ) in southeastern Arizona ( U.S.A. ). We monitored vegetation density and abundance of birds during the breeding season during 1986a??1990 in riparian, mesquite grassland, and Chihuahuan desert-scrub communities in the NCA. The density...
Ecological criteria for evaluating candidate sites for marine reserves
Callum M. Roberts, Sandy Andelman, George Branch, Rodrigo H. Bustamante, Juan Carlos Castilla, Jenifer Dugan, Benjamin S. Halpern, Kevin D. Lafferty, Heather Leslie, Jane Lubchenco, Deborah McArdle, Hugh P. Possingham, Mary Ruckelshaus, Robert R. Warner
2003, Ecological Applications (13) 199-214
Several schemes have been developed to help select the locations of marine reserves. All of them combine social, economic, and biological criteria, and few offer any guidance as to how to prioritize among the criteria identified. This can imply that the relative weights given to different criteria are unimportant. Where...
Relative contributions of sampling effort, measuring, and weighing to precision of larval sea lamprey biomass estimates
Jeffrey W. Slade, Jean V. Adams, Douglas W. Cuddy, Fraser B. Neave, W. Paul Sullivan, Robert J. Young, Michael F. Fodale, Michael L. Jones
2003, Journal of Great Lakes Research (29) 130-136
We developed two weight-length models from 231 populations of larval sea lampreys (Petromyzon marinus) collected from tributaries of the Great Lakes: Lake Ontario (21), Lake Erie (6), Lake Huron (67), Lake Michigan (76), and Lake Superior (61). Both models were mixed models, which used population as a random effect and...
Nontarget bird exposure to DRC-1339 during fall in North Dakota and spring in South Dakota
Thomas W. Custer, Christine M. Custer, Paul M. Dummer, George M. Linz, Louis Sileo, Randal S. Stahl, John J. Johnston
G.M. Linz, editor(s)
2003, Book chapter, Management of North American Blackbirds
Blackbirds frequently use ripening sunflower (Heltantbus annuus) as a food source in the northern Great Plains. In 1999 and 2000, the avicide DRC-1339 (3-chloro-4-methylaniline hydrochloride) was used experimentally on fall-ripening sunflower fields in North Dakota so researchers could evaluate its effectiveness for reducing crop depredations by blackbirds. DRC-1339 was applied...
Mark-recapture population estimates of parasitic sea lampreys (Petromyzon marinus) in Lake Huron
Roger A. Bergstedt, Rodney B. McDonald, Katherine M. Mullett, Gregory M. Wright, William D. Swink, Kenneth P. Burnham
2003, Journal of Great Lakes Research (29) 226-239
Metamorphosed sea lampreys (Petromyzon marinus) were collected and marked at two points in their life cycle. Recently metamorphosed juveniles were collected from streams, marked with coded wire tags, and returned to migrate to the Great Lakes. Juveniles already in the lakes and feeding on teleost hosts were obtained from incidental...
Flyingfish spawning (Parexocoetus brachypterus) in the northeastern Gulf of Mexico
Philip W. Stevens, C.K. Bennett, J.J. Berg
2003, Environmental Biology of Fishes (67) 71-76
Abstract not supplied at this time...
Bilateral uric acid nephrolithiasis and ureteral hypertrophy in a free-ranging river otter (Lontra canadensis)
Robert A. Grove, Rob Bildfell, Charles J. Henny, D. R. Buhler
2003, Journal of Wildlife Diseases (39) 914-917
We report the first case of uric acid nephrolithiasis in a free-ranging river otter (Lontra canadensis). A 7 yr old male river otter collected from the Skagit River of western Washington (USA) had bilateral nephrolithiasis and severely enlarged ureters (one of 305 examined [0.33%]). The uroliths were 97% uric acid...
Planning and executing a lampricide treatment of the St. Marys River using georeferenced data
Michael F. Fodale, Roger A. Bergstedt, Douglas W. Cuddy, Jean V. Adams, Dimitri A. Stolyarenko
2003, Journal of Great Lakes Research (29) 706-716
The St. Marys River is believed to be the primary source of sea lampreys (Petromyzon marinus) in Lake Huron. Planning or evaluating lampricide treatments required knowing where lampricides could effectively be placed and where larvae were located. Accurate maps of larval density were therefore critical to formulating or evaluating management...
Historical fire regime in southern California
Jon E. Keeley, Connie J. Fotheringham
2003, Fire Management Today (63) 8-9
The historical variability in fire regime is a conservative indicator of ecosystem sustainability. Understanding the natural role of fire in chaparral ecosystems is therefore necessary for effective fire management....
Compensatory mechanisms in Great Lakes sea lamprey populations: implications for alternative control strategies
Michael L. Jones, R.A. Bergstedt, Michael B. Twohey, Michael F. Fodale, Douglas W. Cuddy, Jeffrey W. Slade
2003, Journal of Great Lakes Research (29) 113-129
Compensatory mechanisms are demographic processes that tend to increase population growth rates at lower population density. These processes will tend to reduce the effectiveness of actions that use controls on reproductive success to suppress sea lamprey (Petromyzon marinus), an economically important pest in the Great Lakes. Historical evidence for compensatory...
Species area relationships in mediterranean-climate plant communities
Jon E. Keeley, C. J. Fotheringham
2003, Journal of Biogeography (30) 1629-1657
Aim To determine the best-fit model of species–area relationships for Mediterranean-type plant communities and evaluate how community structure affects these species–area models.Location Data were collected from California shrublands and woodlands and compared with literature reports for other Mediterranean-climate regions.Methods The number of species was recorded from 1, 100 and 1000 m2...
Effects of repeated TFM applications on riffle macroinvertebrate communities in four Great Lakes tributaries
John W. Weisser, Jean V. Adams, Richard J. Schuldt, Gregg A. Baldwin, Dennis S. Lavis, Jeffrey W. Slade, John W. Heinrich
2003, Journal of Great Lakes Research (29) 552-565
As part of the sea lamprey control program in the Great Lakes, a suite of about 150 sea lamprey producing streams have been regularly treated with the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) every 3 to 5 years since 1958. State, provincial, and tribal agencies in the basin supported the use of TFM...
Distribution, abundance, and breeding activities of the southwestern willow flycatcher at Marine Corps Base Camp Pendleton, California. 2002 Annual Report
B.E. Kus, K.E. Kenwood
2003, Report
No abstract available at this time...
Riparian and upland bird communities at Lower Topanga Canyon, Topanga State Park, California
B.E. Kus, D.A. Kisner, M.B. Mulrooney
2003, Report
No abstract available at this time...
A characterization of vegetation in nesting and non-nesting plots for Southwestern Willow Flycatchers in central Arizona
L.J. Allison, C.E. Paradizick, J.W. Rourke, T.D. McCarthey
2003, Conference Paper, Studies in Avian Biology
No abstract available at this time...
Comparison of spring measures of length, weight, and condition factor for predicting metamorphosis in two populations of sea lampreys (Petromyzon marinus) larvae
Mary P. Henson, Roger A. Bergstedt, Jean V. Adams
2003, Journal of Great Lakes Research (29) 204-213
The ability to predict when sea lampreys (Petromyzon marinus) will metamorphose from the larval phase to the parasitic phase is essential to the operation of the sea lamprey control program. During the spring of 1994, two populations of sea lamprey larvae from two rivers were captured, measured, weighed, implanted with...
A comparison of bat activity at low and high elevations in the Black Hills of western Washington
J. Erickson, M. J. Adams
2003, Northwest Science (77) 126-130
We examined the differences in activity patterns and community structure of bats between low (<150 m) and high ( ! 575 m) elevation sites in two habitats of the Capitol State Forest, Washington. Total bat activity averaged four times higher at low elevation sites than at high elevation sites. Feeding...
Factors limiting the intertidal distribution of the mangrove species Xylocarpus granatum
J. A. Allen, K. W. Krauss, R.D. Hauff
2003, Oecologia (135) 110-121
The tree species Xylocarpus granatum is commonly described as occurring in the upper intertidal zone of mangrove forests, but mature trees are occasionally found at lower elevations. In the Utwe River basin, on the Pacific island of Kosrae, we investigated the relative importance of several biotic and abiotic factors that...
A radio transmitter belt for small ranid frogs
E. Muths
2003, Herpetological Review (34) 345-348
Radio telemetry is a useful technique for gathering information about amphibians when associated caveats are applied (Bartelt and Peterson 2000). A number of designs for transmitter attachment are available for larger anurans including a harness-type attachment (van Nuland and Claus 1981) and various belt designs (Bartelt and Peterson 2000; Rathbun...
Modeling tritium transport through a deep unsaturated zone, Amargosa Desert Research Site, Nye County, Nevada
C.J. Mayers
2003, Thesis
No abstract available....
Science for avian conservation: Priorities for the new millennium
J. M. Ruth, D. R. Petit, J.R. Sauer, M.D. Samuel, Fred A. Johnson, M.D. Fornwall, C. E. Korschgen, J. P. Bennett
2003, The Auk (120) 204-211
Over the past decade, bird conservation activities have become the preeminent natural resource conservation effort in North America. Maturation of the North American Waterfowl Management Plan (NAWMP), establishment of Partners in Flight (PIF), and creation of comprehensive colonial waterbird and shorebird conservation plans have stimulated unprecedented interest in, and funding...
Small-mammal density estimation: A field comparison of grid-based vs. web-based density estimators
R.R. Parmenter, Terry L. Yates, David R. Anderson, K.P. Burnham, J.L. Dunnum, A.B. Franklin, M.T. Friggens, B. C. Lubow, Michael Miller, G.S. Olson, Cheryl A. Parmenter, J. Pollard, E. Rexstad, T.M. Shenk, T.R. Stanley, Gary C. White
2003, Ecological Monographs (73) 1-26
Statistical models for estimating absolute densities of field populations of animals have been widely used over the last century in both scientific studies and wildlife management programs. To date, two general classes of density estimation models have been developed: models that use data sets from capture–recapture or removal sampling techniques...
