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A new coccidian parasite, Isospora samoaensis, from the Wattled Honeyeater (Foulehaio carunculata) from American Samoa
A new species of Isospora is described from the feces of the wattled honeyeater, Foulehaio carunculata from American Samoa. Numerous oocysts of similar morphology were found in a single adult wattled honeyeater. Sporulated oocysts are ovoid, 28.9 × 26.1 (25-32 × 23-30) µm, with a smooth, colorless, bilayered wall; the inner wall is slightly...Adamczyk, Kelly J.; McQuistion, Thomas E.; LaPointe, Dennis
Coping with mist-net capture-rate bias: Canopy height and several extrinsic factors
Many factors other than a species' actual abundance can affect mist-net capture rates. We used ANCOVA models to quantify some potential biases and control their effects, producing adjusted estimates of capture rates that are more directly comparable among mist-net stations. Data came from 46 two-day mist-net sessions from September 1990 to May...Mallory, Elizabeth P.; Brokaw, Nicholas V. L.; Hess, Steven C.
Limiting spread of a unicolonial invasive insect and characterization of seasonal patterns of range expansion
Limiting dispersal is a fundamental strategy in the control of invasive species, and in certain situations containment of incipient populations may be an important management technique. To test the feasibility of slowing the rapid spread of two Argentine ant (Linepithema humile) supercolonies in Haleakala National Park, Hawaii, we applied ant bait...Krushelnycky, Paul D.; Loope, Lloyd L.; Joe, Stephanie M.
Effects of management practices on grassland birds: Prairie Falcon
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 4,000 published and unpublished papers. A range map is provided to indicate the breeding, year-round, and nonbreeding ranges in the United States and southern Canada. Although birds frequently are observed...DeLong, John P.; Steenhof, Karen
An annotated bibliography of selected guides for stream habitat improvement in the Pacific Northwest
This annotated bibliography is a response to widespread interest in stream habitat improvement in the Pacific Northwest by land managers, governmental and nongovernmental organizations, and the lay public. Several guides to stream habitat improvement have been written in the past, but may not be easily accessible to people from diverse backgrounds...Keim, R.F.; Price, A.B.; Hardin, T. S.; Skaugset, Arne E.; Bateman, D.S.; Gresswell, R.E.; Tesch, S. D.
A comparison of three methods for assessing raptor diet during the breeding season
Video recording of prey deliveries to nests is a new technique for collecting data on raptor diet, but no thorough comparison of results from traditional methods based on collections of prey remains and pellets has been undertaken. We compared data from these 3 methods to determine relative merits of different methods for assessing raptor diet as...Lewis, S.B.; Fuller, Mark R.; Titus, K.
A video surveillence system for monitoring raptor nests in a temperate rainforest environment
No abstract available.Lewis, S.B.; DeSimone, P.; Titus, K.; Fuller, Mark R.
Asymmetrical effects of introduced Rana catesbeiana on native ranid frogs in Oregon, USA
Introduced American Bullfrogs (Rana catesbeiana) have become widely established in the Pacific Northwest over the last century and are thought to be an important predator of native amphibians throughout the western United States. The Northern Red-Legged Frog (Rana aurora aurora) and Oregon Spotted Frog (Rana pretiosa) historically coexisted in...Pearl, Christopher A.; Adams, M.J.; Bury, R. Bruce; McCreary, B.
Autumn migration and wintering areas of Peregrine Falcons Falco peregrinus nesting on the Kola Peninsula, northern Russia
Four female Peregrine Falcons Falco peregrinus breeding on the Kola Peninsula, Russia, were fitted with satellite-received transmitters in 1994. Their breeding home ranges averaged 1175 (sd = ±714) km2, and overlapped considerably. All left their breeding grounds in September and migrated generally south-west along the Baltic Sea....Ganusevich, S.A.; Maechtle, T.L.; Seegar, W.S.; Yates, M.A.; McGrady, M.J.; Fuller, M.; Schueck, L.; Dayton, J.; Henny, C.J.
Cannibalism and predation by western toad (Bufo boreas boreas) larvae in Oregon, USA
Larval amphibians have been widely used as model organisms in studies of community ecology of freshwater systems (Morin 1983, Alford 1999). Much of this work has assumed that trophic effects of larval anurans are focused on periphyton and planktonic algae (Dickman 1968, Seale 1980, Duellman and Trueb 1986), a view that has recently been questioned...Jordan, D.J.; Rombough, C.J.; Pearl, Christopher A.; McCreary, B.
Cervid forage utilization in noncommercially thinned ponderosa pine forests
To evaluate effects of noncommercial thinning, utilization of forages consumed by elk (Cervus elaphus L.), mule deer (Odocoileus hemionus Raf.), and white-tailed deer (Odocoileus virginianus Raf.) was measured in ponderosa pine (Pinus ponderosa P. & C. Lawson) stands in Custer State Park, S. D. Treatments consisted of unthinned (control; 22 to...Gibbs, M.C.; Jenks, J.A.; Deperno, C.S.; Sowell, B.F.; Jenkins, Kurt J.
Community- and landscape-level responses of reptiles and small mammals to feral-horse grazing in the Great Basin
We investigated species- and community-level responses of squamate reptiles and granivorous small mammals to feral-horse grazing in two elevational strata across nine mountain ranges of the western Great Basin, USA. Although mammal species richness did not differ between horse-occupied and horse-removed sites, occupied sites possessed less...Beever, Erik A.; Brussard, P.F.