Surface elevation dynamics in a regenerating mangrove forest at Homebush Bay, Australia
K. Rogers, N. Saintilan, D. Cahoon
2005, Wetlands Ecology and Management (13) 587-598
Following the dieback of an interior portion of a mangrove forest at Homebush Bay, Australia, surface elevation tables and feldspar marker horizons were installed in the impacted, intermediate and control forest to measure vertical accretion, elevation change, and shallow subsidence. The objectives of the study were to determine current vertical...
Modeling anuran detection and site occupancy on North American Amphibian Monitoring Program (NAAMP) routes in Maryland
Linda Weir, J. Andrew Royle, Priya Nanjappa, Robin E. Jung
2005, Journal of Herpetology (39) 627-639
One of the most fundamental problems in monitoring animal populations is that of imperfect detection. Although imperfect detection can be modeled, studies examining patterns in occurrence often ignore detection and thus fail to properly partition variation in detection from that of occurrence. In this study, we used anuran calling survey...
Geographic distribution: Hemidactylium scutatum (four-toed salamander.) USA: Maine
B. Windmiller, L. Weir, B. Barber, K. Blazej, G. Mittelhauser, P. Mittelhauser, K. Roen
2005, Herpetological Review (36) 461-462
Efficacy of selected coccidiostats in sandhill cranes (Grus canadensis) following challenge
James W. Carpenter, Meliton N. Novilla, Jeffrey Hatfield
2005, Journal of Zoo and Wildlife Medicine (36) 391-400
The anticoccidial efficacy of amprolium, clazuril, and monensin were studied in sandhill cranes (Grus canadensis) infected with a mixture of Eimeria spp. oocysts. Five groups of four 1-day-old sandhill crane chicks were maintained on a crumbled ration containing no coccidiostat, amprolium at 2.2 ppm, clazuril at 1.1 ppm, clazuril at...
From the Field: Carbofuran detected on weathered raptor carcass feet
Nimish B. Vyas, James W. Spann, Craig S. Hulse, W. Bauer, S. Olson
2005, Wildlife Society Bulletin (33) 1178-1182
The cause of death for raptors poisoned at illegal carbofuran-laced predator baits is often not confirmed because the carcass matrices that are conventionally analyzed are not available due to decomposition and scavenging. However, many such carcasses retain intact feet that may have come into contact with carbofuran. Eastern screech owls...
Using the North American Breeding Bird Survey as a tool for conservation: A critique of Bart et al. (2004)
John R. Sauer, William A. Link, James D. Nichols, J. Andrew Royle
2005, Journal of Wildlife Management (69) 1321-1326
Bart et al. (2004) develop methods for predicting needed samples for estimation of long-term trends from Count survey data, and they apply these methods to the North American Breeding Bird Survey (BBS). They recommend adding approximately 40% more survey routes ill the BBS to allow for estimation of long-term...
Modeling association among demographic parameters in analysis of open population capture-recapture data
William A. Link, Richard J. Barker
2005, Biometrics (61) 46-54
We present a hierarchical extension of the Cormack–Jolly–Seber (CJS) model for open population capture–recapture data. In addition to recaptures of marked animals, we model first captures of animals and losses on capture. The parameter set includes capture probabilities, survival rates, and birth rates. The survival rates and birth rates are...
Designing occupancy studies: General advice and allocating survey effort
Darryl I. MacKenzie, J. Andrew Royle
2005, Journal of Applied Ecology (42) 1105-1114
1.The fraction of sampling units in a landscape where a target species is present (occupancy) is an extensively used concept in ecology. Yet in many applications the species will not always be detected in a sampling unit even when present, resulting in biased estimates of...
Groundwater control of mangrove surface elevation: shrink and swell varies with soil depth
K.R.T. Whelan, T. J. Smith III, Donald R. Cahoon, J.C. Lynch, G.H. Anderson
2005, Estuaries (28) 833-843
We measured monthly soil surface elevation change and determined its relationship to groundwater changes at a mangrove forest site along Shark River, Everglades National Park, Florida. We combined the use of an original design, surface elevation table with new rod-surface elevation tables to separately track changes in the mid...
Winter status of White-eyed Vireos in northeastern Louisiana
S.G. Somershoe, D.J. Twedt
2005, North American Bird Bander (30) 101-103
In December 2004, February 2005, and June 2005, we recaptured a White-eyed Vireo (Vireo griseus) that was banded on 19 May 2004 at the same location on the Tensas River National Wildlife Refuge, Madison Parish, LA. This is the first documented permanent resident White-eyed Vireo outside of resident populations...
Phylogeography of the American woodcock (Scolopax minor): Are management units based on band recovery data reflected in genetically based management units?
J.M. Rhymer, D.G. McAuley, H.L. Ziel
2005, The Auk (122) 1149-1160
Information on population connectivity throughout the annual cycle has become more crucial, because populations of many migratory birds are in decline. One such species is the American Woodcock (Scolopax minor), which inhabits early-successional forests in eastern North America. Although band recoveries have proved useful for dividing populations of this game...
Subchronic effects of methylmercury on plasma and organ biochemistries in great egret nestlings
D. J. Hoffman, M. G. Spalding, P. C. Frederick
2005, Environmental Toxicology and Chemistry (24) 3078-3084
In recent years, high concentrations of mercury have been found in wading birds in Florida, USA. Great egret (Ardea alba) chicks (2 weeks old) were dosed orally daily with the equivalent of 0, 0.5, or 5 μg/g Hg as methylmercury chloride in the diet for up to 12 weeks. Weakness...
Exposure to polybrominated diphenyl ethers (PBDEs): Changes in thyroid, vitamin A, glutathione homeostasis, and oxidative stress in American kestrels (Falco sparverius)
Kim J. Fernie, J. L. Shutt, G. Mayne, D. Hoffman, Robert J. Letcher, Ken G. Drouillard, I. J. Ritchie
2005, Toxicological Sciences (88) 375-383
Polybrominated diphenyl ethers (PBDEs), a class of additive flame retardants, are temporally increasing in wildlife tissues and capable of disrupting normal endocrine function. We determined whether in ovo and post-hatch exposure of captive American kestrels (Falco sparverius) to environmentally relevant PBDEs alter thyroid, retinol, and oxidative stress measures. Control eggs were injected...
Atlantic Flyway review: Region IV, Piedmont-Coastal Plain, Fall 2004: Robbins Nest, Laurel, MD (390-0765)
Chandler S. Robbins
2005, North American Bird Bander (30) 87-87
The continuing decline in migratory species is depressing. For a 'migration station' to report Northern Cardinal as the species most commonly banded during the autumn months came as a real shock, especially when the cardinal was so far ahead of second-place catbird. I caught twice as many cardinals as all...
Commentary on the type material of Tantilla gracilis Baird and Girard, 1853 and Tantilla nigriceps Kennicott, 1860 (Reptilia: Squamata), with a neotype designation for T. nigriceps
S.W. Gotte, L.D. Wilson
2005, Proceedings of the Biological Society of Washington (118) 596-604
We demonstrate that USNM 2040 and not UMMZ 3781 (originally part of lot USNM 4500) was most likely the holotype of Tantilla gracilis. The type specimens of Tantilla nigriceps have been lost or destroyed. It is not possible to determine from the original description of Tantilla nigriceps if this...
Investigating hydrologic alteration as a mechanism of fish assemblage shifts in urbanizing streams
A.H. Roy, Mary C. Freeman, B. J. Freeman, S.J. Wenger, W.E. Ensign, J.L. Meyer
2005, Journal of the North American Benthological Society (24) 656-678
Stream biota in urban and suburban settings are thought to be impaired by altered hydrology; however, it is unknown what aspects of the hydrograph alter fish assemblage structure and which fishes are most vulnerable to hydrologic alterations in small streams. We quantified hydrologic variables and fish assemblages in 30 small...
Skeletal morphology of the forefoot in shrews (Mammalia: Soricidae) of the genus Cryptotis, as revealed by digital x-rays
Neal Woodman, J. P. J. Morgan
2005, Journal of Morphology (266) 60-73
Variation in the forefoot skeleton of small-eared shrews (family Soricidae, genus Cryptotis) has been previously documented, but the paucity of available skeletons for most taxa makes assessment of the degrees of intraspecific and interspecific variation difficult. We used a digital X-ray system to extract images of the forefoot skeleton from 101...
Atlantic Flyway review: Region IV, Piedmont-Coastal Plain, Fall 2004
Chandler S. Robbins
2005, North American Bird Bander (30) 85-90
July, August, and September were cool and wet in the Southeast, with multiple hurricanes threatening the banding stations. Banding results ranged from poor in Laurel and Chincoteague to excellent at Chino Farms, Kiptopeke, Jekyll Island, and the Florida stations. There was little agreement on peak migration days, which ranged from...
Wintering with the neotropical migrants
C.S. Robbins, B. Dowell, A. Cerezo
2005, Passenger Pigeon (67) 53-60
Implementing Leave No Trace at camps
J. L. Marion, D. Bates
2005, Camping Magazine (78) 54-57
Rejoinder to "The performance of mixture models in heterogeneous closed population capture-recapture"
Robert Dorazio, J. Andrew Royle
2005, Biometrics (61) 874-876
No abstract available....
Modeling avian abundance from replicated counts using binomial mixture models
Marc Kery, J. Andrew Royle, Hans Schmid
2005, Ecological Applications (15) 1450-1461
Abundance estimation in ecology is usually accomplished by capture–recapture, removal, or distance sampling methods. These may be hard to implement at large spatial scales. In contrast, binomial mixture models enable abundance estimation without individual identification, based simply on temporally and spatially replicated counts. Here, we evaluate mixture models using data...
Reach-scale effects of riparian forest cover on urban stream ecosystems
A.H. Roy, C.L. Faust, Mary C. Freeman, J.L. Meyer
2005, Canadian Journal of Fisheries and Aquatic Sciences (62) 2312-2329
We compared habitat and biota between paired open and forested reaches within five small streams (basin area 10?20 km2) in suburban catchments (9%?49% urban land cover) in the Piedmont of Georgia, USA. Stream reaches with open canopies were narrower than forested reaches (4.1 versus 5.0 m, respectively). There...
Nonlinearity and seasonal bias in an index of brushtail possum abundance
David M. Forsyth, William A. Link, R. Webster, G. Nugent, B. Warburton
2005, Journal of Wildlife Management (69) 976-984
Introduced brushtail possums (Trichosurus vulpecula) are a widespread pest of conservation and agriculture in New Zealand, and considerable effort has been expended controlling populations to low densities. A national protocol for monitoring the abundance of possums, termed trap catch index (TCI), was adopted in 1996. The TCI requires that...
Estimating site occupancy and abundance using indirect detection indices
Thomas R. Stanley, J. Andrew Royle
2005, Journal of Wildlife Management (69) 874-883
Knowledge of factors influencing animal distribution and abundance is essential in many areas of ecological research, management, and policy-making. Because common methods for modeling and estimating abundance (e.g., capture–recapture, distance sampling) are sometimes not practical for large areas or elusive species, indices are sometimes used as surrogate measures of abundance....
