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 herbivory and water on willow in elk winter range Influences of herbivory and water on willow in elk winter range
Elimination of large predators and reduced hunter harvest have led to concerns that an increasing elk (Cervus elaphus) population may be adversely affecting vegetation on the low-elevation elk winter range of Rocky Mountain National Park, Colorado, USA. Beaver (Castor canadensis) and their impoundments also have declined dramatically (94%) in the same area over the past 50 years...
Authors
L. C. Zeigenfuss, F. J. Singer, S. A. Williams, T. L. Johnson
Beyond theories of plant invasions: Lessons from natural landscapes Beyond theories of plant invasions: Lessons from natural landscapes
There are a growing number of contrasting theories about plant invasions, but most are only weakly supported by small-scale field experiments, observational studies, and mathematical models. Among the most contentious theories is that species-rich habitats should be less vulnerable to plant invasion than species-poor sites, stemming from earlier theories that competition is a major force...
Authors
Thomas J. Stohlgren
Economic costs of electrical system instability and power outages caused by snakes on the Island of Guam Economic costs of electrical system instability and power outages caused by snakes on the Island of Guam
The Brown Tree Snake, Boiga irregularis, is an introduced species on Guam where it causes frequent electrical power outages. The snake's high abundance, its propensity for climbing, and use of disturbed habitats all contribute to interruption of Guam's electrical service and the activities that depend on electrical power. Snakes have caused more than 1600 power outages in the 20-yr...
Authors
T. H. Fritts
How stakeholder roles, power, and negotiation impact natural resource policy: A political economy view How stakeholder roles, power, and negotiation impact natural resource policy: A political economy view
Natural resource management decisions are complicated by multiple property rights, management objectives, and stakeholders with varying degrees of influence over the decision making process. In order to make efficient decisions, managers must incorporate the opinions and values of the involved stakeholders as well as understand the complex institutional constraints and opportunities that...
Authors
L. Caughlan
Lots of lightning and plenty of people: An ecological history of fire in the upland southwest Lots of lightning and plenty of people: An ecological history of fire in the upland southwest
Was the pre-European Southwest a region of wild landscapes, shaped primarily by natural processes like lightning-ignited fire, or did people substantially mold these lands into regional-scale artifacts through their use of fire and other means? Perspectives on this question have varied markedly through time and between scholars, as evident from the quotes interspersed through this...
Authors
Craig D. Allen
Instream flows for riverine resource stewardship Instream flows for riverine resource stewardship
No abstract available.
Authors
T. Annear, I. Chisholm, H. Beecher, A. Locke, P. Aarrestad, N. Burkardt, C. Coomer, C. Estes, J. Hunt, R. Jacobson, G. Jobsis, J. Kauffman, J. Marshall, K. Mayes, C. Stalnaker, R. Wentworth
Visitor reponse to demonstration fees at National Wildlife Refuges Visitor reponse to demonstration fees at National Wildlife Refuges
In response to a request from the United States Fish and Wildlife Service, we examined the likelihood of visitors changing their plans for future visits to National Wildlife Refuges (NWR) because of changes in entrance or use fees. We obtained data for this study from 3,173 respondents from 14 NWRs between 1998 and 2000. Overall, only 8% of all respondents reported potential displacement...
Authors
J. G. Taylor, J.J. Vaske, L.B. Shelby, M.P. Donnelly, Cassandra M. Browne
USFWS demonstration fees USFWS demonstration fees
This study examined National Wildlife Refuge (NWR) visitors' reactions to changes in fees implemented as part of the fee demonstration program. Visitors' evaluations of the fees paid were examined in addition to their beliefs about fees and the fee demonstration program, and the impact of fees paid on their intention to return. All results were analyzed relative to socio-demographic
Authors
Jonathan Taylor, Jerry Vaske, Maureen Donnelly, Lori Shelby
The influence of sylvatic plague on North American wildlife at the landscape level, with special emphasis on black-footed ferret and prairie dog conservation The influence of sylvatic plague on North American wildlife at the landscape level, with special emphasis on black-footed ferret and prairie dog conservation
No abstract available.
Authors
M.F. Antolin, P. Gober, Bob Luce, D. E. Biggins, W.E. van Pelt, D.B. Seery, M. Lockhart, M. Ball
Public attitudes and knowledge of the black-tailed prairie dog: A common and controversial species Public attitudes and knowledge of the black-tailed prairie dog: A common and controversial species
No abstract available.
Authors
D. Lybecker, B. L. Lamb, P.D. Ponds
Evaluation of a habitat suitability index model Evaluation of a habitat suitability index model
We assisted with development of a model for maternity habitat of the Indiana bat (Myotis soda/is), for use in conducting assessments of projects potentially impacting this endangered species. We started with an existing model, modified that model in a workshop, and evaluated the revised model, using data previously collected by others. Our analyses showed that higher indices of habitat...
Authors
A.H. Farmer, B.S. Cade, D.F. Stauffer
Phylogeography and history of giant Galápagos tortoises Phylogeography and history of giant Galápagos tortoises
We examined the phylogeography and history of giant Galápagos tortoise populations based on mitochondrial DNA sequence data from 161 individuals from 21 sampling sites representing the 11 currently recognized extant taxa. Molecular clock and geological considerations indicate a founding of the monophyletic Galápagos lineage around 2–3 million years ago, which would allow for all the
Authors
A. Caccone, G. Gentile, J.P. Gibbs, T. H. Fritts, H.L. Snell, J. Betts, J.R. Powell