A large-scale deforestation experiment: Effects of patch area and isolation on Amazon birds
G. Ferraz, J.D. Nichols, J.E. Hines, P.C. Stouffer, R.O. Bierregaard, T.E. Lovejoy
2007, Science (315) 238-241
As compared with extensive contiguous areas, small isolated habitat patches lack many species. Some species disappear after isolation; others are rarely found in any small patch, regardless of isolation. We used a 13-year data set of bird captures from a large landscape-manipulation experiment in a Brazilian Amazon forest...
The potential of fruit trees to enhance converted habitats for migrating birds in southern Mexico
M.S. Foster
2007, Bird Conservation International (17) 45-61
Migration routes used by Nearctic migrant birds can cover great distances; they also differ among species, within species, and between years and seasons. As a result, migration routes for an entire migratory avifauna can encompass broad geographic areas, making it impossible to protect continuous stretches of habitat sufficient to...
Less typical now: A 1970s retrospective
J. L. Marion
2007, Appalachia (57) 8-19
Evaluation of the status of anurans on a refuge in suburban Maryland
S.M. Brander, J. Andrew Royle, M. Eames
2007, Journal of Herpetology (14) 52-60
Because many anurans have well-defined breeding seasons and male anurans produce loud advertisement calls, surveys of these breeding choruses are believed to provide a dependable means of monitoring population trends. The Patuxent Research Refuge initiated such a calling survey in the spring of 1997, which uses volunteers to collect anuran...
Optimal control of Atlantic population Canada geese
C.E. Hauser, M.C. Runge, E.G. Cooch, Fred A. Johnson, W.F. Harvey IV
2007, Ecological Modelling (201) 27-36
Management of Canada geese (Branta canadensis) can be a balance between providing sustained harvest opportunity while not allowing populations to become overabundant and cause damage. In this paper, we focus on the Atlantic population of Canada geese and use stochastic dynamic programming to determine the optimal harvest strategy over a...
Importance of well-designed monitoring programs for the conservation of endangered species: Case study of the Snail Kite
J. Martin, W.M. Kitchens, J.E. Hines
2007, Conservation Biology (21) 472-481
Monitoring natural populations is often a necessary step to establish the conservation status of species and to help improve management decisions. Nevertheless, many monitoring programs do not effectively address primary sources of variability in monitoring data, which ultimately may limit the utility of monitoring in identifying declines and improving management....
Iteroparity in the variable environment of the salamander Ambystoma tigrinum
D.R. Church, L.L. Bailey, H.M. Wilbur, W. L. Kendall, J.E. Hines
2007, Ecology (88) 891-903
Simultaneous estimation of survival, reproduction, and movement is essential to understanding how species maximize lifetime reproduction in environments that vary across space and time. We conducted a four-year, capture–recapture study of three populations of eastern tiger salamanders (Ambystoma tigrinum tigrinum) and used multistate mark–recapture statistical methods to estimate the manner...
Effects of habitat change along Breeding Bird Survey routes in the central Appalachians on Cerulean Warbler population
P. McElhone, P.W. Wood, D. Dawson
2007, Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies (61) 131 (abs)
The cerulean warbler (Dendroica cerulea) is one of the highest priority bird species in the eastern United States because populations have declined 4.3% annually during 1966?2005 based on Breeding Bird Survey (BBS) data. Habitat loss and fragmentation due to land use changes is thought to be one of the...
Mercury and growth of tree swallows at Acadia National Park, and at Orono, Maine, USA
Jerry R. Longcore, Reza Dineli, Terry A. Haines
2007, Environmental Monitoring and Assessment (126) 117-127
In 1997 and 1998 we weighed nestling tree swallows (Tachycineta bicolor) and measured selected body components at two colonies: Acadia National Park on Mt. Desert Island, and at Orono, ME. We used differences in mean growth variables among individual nestlings to evaluate differences between colonies, years, and amount of...
Mercury in tree swallow food, eggs, bodies, and feathers at Acadia National Park, Maine, and an EPA Superfund Site, Ayer, Massachusetts
Jerry R. Longcore, Terry A. Haines, William A. Halteman
2007, Environmental Monitoring and Assessment (126) 129-143
We monitored nest boxes during 1997–1999 at Acadia National Park, Mt. Desert Island, ME and at an old-field site in Orono, ME to determine mercury (Hg) uptake in tree swallow (Tachycineta bicolor) eggs, tissues, and food boluses. Also, in 1998–1999 we monitored nest boxes at Grove Pond and...
Design and implementation of estimation-based monitoring programs for flora and fauna: A case study on the Cherokee National Forest
J.D. Klimstra, A.F. O'Connell Jr., M.J. Pistrang, L.M. Lewis, J.A. Herrig, J.R. Sauer
2007, Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies (61) 126 (abs)
Science-based monitoring of biological resources is important for a greater understanding of ecological systems and for assessment of the target population using theoretic-based management approaches. When selecting variables to monitor, managers first need to carefully consider their objectives, the geographic and temporal scale at which they will operate, and...
Using a novel micro-sampling technique to monitor the effects of methylmercury on the eggs of wild birds
J.D. Klimstra, K.R. Stebbins, G. H. Heinz
2007, Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies (61) 129 (abs)
Methylmercury is the predominant chemical form of mercury reported in the eggs of wild birds. The embryo is the life stage at which birds are most sensitive to methylmercury. Protective guidelines have been based largely on captive-breeding studies done with chickens (Gallus domesticus), mallards (Anas platyrhynchos), and ring-necked...
[Book Review] Waterfowl ecology and management by Guy A. Baldassarre and Eric G. Bolen
Glenn H. Olsen
2007, The Quarterly Review of Biology (82) 73-74
A review of: Waterfowl Ecology and Management. Second Edition. By Guy A Baldassarre and , Eric G Bolen; illustrated by , Tamara R Sayre. Malabar (Florida): Krieger Publishing. $112.50. xii + 567 p; ill.; index. ISBN: 1‐57524‐260‐5. 2006...
Natal location influences movement and survival of a spatially structured population of snail kites
J. Martin, W.M. Kitchens, J.E. Hines
2007, Oecologia (153) 291-301
Despite the accepted importance of the need to better understand how natal location affects movement decisions and survival of animals, robust estimates of movement and survival in relation to the natal location are lacking. Our study focuses on movement and survival related to the natal location of snail kites...
Patch-occupancy models indicate human activity as major determinant of forest elephant Loxodonta cyclotis seasonal distribution in an industrial corridor in Gabon
R. Buij, W.J. McShea, P. Campbell, M.E. Lee, F. Dallmeier, S. Guimondou, L. Mackaga, N. Guisseougou, S. Mboumba, J.E. Hines, J.D. Nichols, A. Alonso
2007, Biological Conservation (135) 189-201
The importance of human activity and ecological features in influencing African forest elephant ranging behaviour was investigated in the Rabi-Ndogo corridor of the Gamba Complex of Protected Areas in southwest Gabon. Locations in a wide geographical area with a range of environmental variables were selected for patch-occupancy surveys using...
Immunotoxicity of trenbolone acetate in Japanese quail
M.J. Quinn, M. McKernan, E.T. Lavoie, M. A. Ottinger
2007, Journal of Toxicology and Environmental Health, Part A (70) 88-93
Trenbolone acetate is a synthetic androgen that is currently used as a growth promoter in many meat-exporting countries. Despite industry laboratories classifying trenbolone as nonteratogenic, data showed that embryonic exposure to this androgenic chemical altered development of the immune system in Japanese quail. Trenbolone is lipophilic, persistent, and...
Oxidative stress induced in PCB 126-exposed northern leopard frogs, Rana pipiens
Y.-W. Huang, D. J. Hoffman, W. H. Karasov
2007, Journal of Toxicology and Environmental Health, Part A (70) 676-681
Northern leopard frogs Rana pipiens exposed to PCB 126 (3,3',4,4',5-pentachlorobiphenyl) were examined for hepatic oxidative stress. In a dose-response study, northern leopard frogs were injected intraperitoneally with either PCB 126 in corn oil (0.2, 0.7, 2.3, or 7.8 mg/kg body weight) or corn oil alone. In a time-course...
Evaluation of Streamflow Gain-Loss Characteristics of Hubbard Creek, in the Vicinity of a Mine-Permit Area, Delta County, Colorado, 2007
Barbara C. Ruddy, Cory A. Williams
2007, Scientific Investigations Report 2009-5271
In 2007, the U.S. Geological Survey, in cooperation with Bowie Mining Company, initiated a study to characterize the streamflow and streamflow gain-loss in a reach of Hubbard Creek in Delta County, Colorado, in the vicinity of a mine-permit area planned for future coal mining. Premining streamflow characteristics and streamflow gain-loss...
Vascular Plant and Vertebrate Inventory of Saguaro National Park, Tucson Mountain District
William L. Halvorson, Cecilia A. Schmidt, Brian F. Powell
2007, Open-File Report 2007-1296
This report summarizes the results of the first comprehensive inventory of plants and vertebrates at the Tucson Mountain District (TMD) of Saguaro National Park, Arizona. From 2001 to 2003 we surveyed for vascular plants and vertebrates (amphibians, reptiles, birds, and mammals) at the district to document the presence of species...
Vascular Plant and Vertebrate Inventory of Coronado National Memorial
Brian F. Powell, Don E. Swann, William L. Halvorson
Cecilia A. Schmidt, editor(s)
2007, Open-File Report 2007-1393
We conducted inventories for amphibians and reptiles, birds, and mammals; and summarized past inventories for vascular plants at Coronado National Memorial (NM) in Arizona. We used our data as well as data from previous research to compile species lists for the memorial, assess inventory completeness, and make suggestions on future...
Vascular Plant and Vertebrate Inventory of Tonto National Monument
Eric W. Albrecht, Brian F. Powell, William L. Halvorson, Cecilia A. Schmidt
2007, Open-File Report 2007-1295
This report summarizes the results of the first biological inventory of plants and vertebrates at Tonto National Monument (NM). From 2001 to 2003, we surveyed for vascular plants and vertebrates (amphibians, reptiles, birds, and mammals) at Tonto NM to record species presence. We focused most of our efforts along the...
South San Francisco Bay, California
Peter Dartnell, Helen Gibbons
2007, General Information Product 57
The U.S. Geological Survey, in cooperation with the California Coastal Conservancy and the National Oceanic and Atmospheric Administration, mapped the floor of south San Francisco Bay and adjoining land using single-beam sonar and airborne lidar (light detection and ranging). To learn more, visit http://pubs.usgs.gov/sim/2007/2987/. View eastward. Elevations in mapped area color...
Catalog of type specimens of recent Crocodilia and Testudines in the National Museum of Natural History, Smithsonian Institution
R.P. Reynolds, S.W. Gotte, C.H. Ernst
2007, Smithsonian Contributions to Zoology No. 626
The known type specimens of Crocodilia and Testudines in the collection of the Division of Amphibians and Reptiles, National Museum of Natural History, Smithsonian Institution, published through 2006 represent 93 names of taxa. The catalog presents a list of 249 type-specimen records consisting of 39 holotypes, 52 syntypes, 3...
Waterbirds of the Chesapeake Bay and Vicinity: Harbingers of Change?
2007, Waterbirds (30)
Evaluation of marsh development processes at Fire Island National Seashore: Recent and historic perspectives
C. T. Roman, D.R. King, Donald R. Cahoon, J.C. Lynch, P.G. Appleby
2007, Report
Purpose and significance of the study: Salt marshes are dynamic environments, increasing in vertical elevation and migrating, often landward, as sea level rises. With sea level rise greater than marsh elevation increase, marshes can be submerged, marsh soils become waterlogged, and plant growth becomes stressed, often resulting in...
