Publications
FORT scientists have produced more than 2000 peer reviewed publications that are registered in the USGS Publications Warehouse, along with many others prior to their work at the USGS or in conjunction with other government agencies.
Filter Total Items: 2418
Influences of introduced plague on North American mammals: Implications from ecology of plague in Asia Influences of introduced plague on North American mammals: Implications from ecology of plague in Asia
Intercontinental movements of invasive species continue to modify the world's ecosystems. The plague bacterium (Yersinia pestis) has colonized and altered animal communities worldwide but has received much more attention as a human pathogen. We reviewed studies on the ecology of Y. pestis in ancient foci of central Asia and in western North America, where the bacterium apparently has...
Authors
E. Biggins, M.Y. Kosoy
Archaic agencies, muddled missions, and conservation in the 21st century Archaic agencies, muddled missions, and conservation in the 21st century
No abstract available.
Authors
Fred B. Samson, Fritz L. Knopf
Biodiversity losses: The downward spiral Biodiversity losses: The downward spiral
The dramatic decline of whitebark pine (Pinus albicaulis) populations in the northwestern United States and southwestern Canada from the combined effects of fire exclusion, mountain pine beetles (Dendroctonus ponderosae), and white pine blister rust (Cronartium ribicola), and the projected decline of whitebark pine populations rangewide (Chapters 10 and 11) do not simply add up to local
Authors
Diana F. Tomback, Katherine C. Kendall
The densest terrestrial vertebrate The densest terrestrial vertebrate
An understanding of the abundance of organisms is central to understanding ecology, but many population density estimates are unrepresentative because they were obtained from study areas chosen for the high abundance of the target species. For example, from a pool of 1072 lizard density estimates that we compiled from the literature, we sampled 303 estimates and scored each for its...
Authors
G.H. Rodda, G. Perry, R.J. Rondeau, J. Lazell
User manual for Blossom Statistical Software User manual for Blossom Statistical Software
Blossom is an interactive program for making statistical comparisons with distance-function based permutation tests developed by P. W. Mielke, Jr. and colleagues at Colorado State University (Mielke and Berry 2001) and for testing parameters estimated in linear models with permutation procedures developed by B. S. Cade and colleagues at the Fort Collins Science Center, U. S. Geological...
Authors
Brian S. Cade, Jon Richard
The interplay of habitat change, human disturbance and species interactions in a waterbird colony The interplay of habitat change, human disturbance and species interactions in a waterbird colony
Potential responses to human disturbance at breeding colonies of waterbirds include reproductive failure, population declines and displacement from activity areas. Several additional factors, including species interactions and environmental change, can either mask or intensify the effects of human activity. This study highlights the importance of considering these factors in concert with...
Authors
Susan K. Skagen, Cynthia P. Melcher, Erin L. Muths
Anthropogenic nitrogen deposition induces rapid ecological changes in alpine lakes of Colorado Front Range (USA) Anthropogenic nitrogen deposition induces rapid ecological changes in alpine lakes of Colorado Front Range (USA)
Recent sediments from two alpine lakes (> 3300 m asl) in the Colorado Front Range (USA) register marked and near-synchronous changes that are believed to represent ecological responses to enhanced atmospheric deposition of fixed nitrogen from anthropogenic sources. Directional shifts in sediment proxies include greater representations of mesotrophic diatoms and increasingly depleted δ15N...
Authors
A.P. Wolfe, Jill Baron, R.J. Cornett
Effects of emergency haying on vegetative characteristics within selected Conservation Reserve Program fields in the Northern Great Plains Effects of emergency haying on vegetative characteristics within selected Conservation Reserve Program fields in the Northern Great Plains
Successional changes in vegetation composition within seeded grasslands may effect attainment of long term conservaation objectives. Comparisons between vegetation composition within Conservation Reserve Program (CRP) fields planted to cool season, introduced grasses hayed for emergency we, and non hayed fields of the same age and species composition were completed to determine potential...
Authors
A.W. Allen, B.S. Cade, M.W. Vandever
The status of the macroinvertebrate community in the St. Croix River, Minnesota and Wisconsin: An examination of ecological health using techniques of multivariate analysis The status of the macroinvertebrate community in the St. Croix River, Minnesota and Wisconsin: An examination of ecological health using techniques of multivariate analysis
A statistical procedure that integrates physical, chemical and biological data is used to operationally define and analyze ecological health. Benthic macroinvertebrates collected from May through September from eight locations along the St. Croix River in Minnesota and Wisconsin were analyzed by canonical correspondence analyses. A sequential multivariate analysis procedure was developed...
Authors
T.P. Boyle, M.S. Strand
Long-term ecosystem studies in Isle Royale, Olympic and Rocky Mountain National Parks; Noatak National Preserve, and Fraser Experimental Forest Long-term ecosystem studies in Isle Royale, Olympic and Rocky Mountain National Parks; Noatak National Preserve, and Fraser Experimental Forest
No abstract available.
Authors
R. Stottlemyer, Jill Baron, R. Edmonds, L. Scherbarth, H. Stelzer
A high validity census technique for herpetofaunal assemblages A high validity census technique for herpetofaunal assemblages
No abstract available.
Authors
G.H. Rodda, E.W. Campbell, T. H. Fritts