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Page 2552, results 63776 - 63800

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Visitor survey results for the Souris River Loop National Wildlife Refuges: Completion report
Natalie R. Sexton, Lynne Koontz, Susan C. Stewart
2005, Open-File Report 2005-1399
In support of the CCP planning effort for the Souris River Loop Refuges, the Policy Analysis and Science Assistance Branch/Fort Collins Science Center (PASA) of the U.S. Geological Survey conducted visitor surveys at three refuges in North Dakota: Des Lacs, J. Clark Salyer, and Upper Souris National Wildlife Refuges. This...
Global land cover mapping and characterization: present situation and future research priorities
Chandra Giri
2005, Geocarto International (20) 35-42
The availability and accessibility of global land cover data sets plays an important role in many global change studies. The importance of such science‐based information is also reflected in a number of international, regional, and national projects and programs. Recent developments in earth observing satellite technology, information technology, computer hardware...
Relationships between gap makers and gap fillers in an Arkansas floodplain forest
Sammy L. King, T. J. Antrobus
2005, Journal of Vegetation Science (16) 471-478
Question:In floodplain forests, does frequent flooding allow for self-replacement of shade-intolerant tree species or do small canopy gap openings lead to replacement by shade-tolerant tree species?Location:Cache River, Arkansas, US; 55 m a.s.l.Methods:The species, diameter-at-breast height, and elevation of primary gap-maker trees...
Attitudinal survey component of the study Quantity, quality, and support for research in the U.S. Fish and Wildlife Service: An organizational assessment: Report of methods and frequencies
Jennifer R. Neilson, Berton Lee Lamb, Earlene M. Swann, Joan Ratz, Phadrea D. Ponds, Joyce Liverca
2005, Open-File Report 2005-1449
The U.S. Fish and Wildlife Service (FWS) is responsible for managing the Nation’s fish and wildlife resources so that these trust resources are preserved for the present and future use and enjoyment of the citizens of the United States. The FWS achieves this mission by managing many programs. These include...
Rocky Mountain Center for Conservation Genetics and Systematics
S.J. Oyler-McCance, T.W. Quinn
2005, Fact Sheet 2005-3138
The use of molecular genetic tools has become increasingly important in addressing conservation issues pertaining to plants and animals. Genetic information can be used to augment studies of population dynamics and population viability, investigate systematic, refine taxonomic definitions, investigate population structure and gene flow, and document genetic diversity in a...
User manual for Blossom statistical package for R
Marian Talbert, Brian S. Cade
2005, Open-File Report 2005-1353
Blossom is an R package with functions 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 wood frog (Rana sylvatica): a technical conservation assessment
E. Muths, S. Rittmann, J. Irwin, D. Keinath, R. Scherer
2005, Report
Overall, the wood frog (Rana sylvatica) is ranked G5, secure through most of its range (NatureServe Explorer 2002). However, it is more vulnerable in some states within the USDA Forest Service Region 2: S3 (vulnerable) in Colorado, S2 (imperiled) in Wyoming, and S1 (critically imperiled in South Dakota (NatureServe...
Diseases of amphibian eggs and embryos
D. E. Green, K. A. Converse
S.K. Majumdar, J.E. Huffman, F.J. Brenner, A.I. Panah, editor(s)
2005, Book chapter, Wildlife Diseases: Landscape Epidemiology, Spatial Distribution and Utilization of Remote Sensing Technology.
Amphibians generally are prolific egg producers. In tropical and semi-tropical regions, deposition of eggs may occur year-round or may coincide with rainy seasons, while in temperate regions, deposition of eggs usually occurs immediately after emergence from hibernation. Numbers of eggs produced by each species may vary from a few dozen...
Geographic variation in marine turtle fibropapillomatosis
R.J. Greenblatt, Thierry M. Work, P. Dutton, C.A. Sutton, T.R. Spraker, R.N. Casey, C.E. Diez, Dana C. Parker, J. St. Ledger, G.H. Balazs, J.W. Casey
2005, Journal of Zoo and Wildlife Medicine (36) 527-530
We document three examples of fibropapillomatosis by histology, quantitative polymerase chain reaction (qPCR), and sequence analysis from three different geographic areas. Tumors compatible in morphology with fibropapillomatosis were seen in green turtles from Puerto Rico and San Diego (California) and in a hybrid loggerhead/ hawksbill turtle from Florida Bay (Florida)....
NPLichen: a database of lichens in the U.S. national parks
J. P. Bennett, C. M. Wetmore
2005, Evansia (22) 39-42
NPLichen, a database of lichens in the U. S. National Parks (Wetmore and Bennett, 1992), has been extensively revised and expanded, and is now available for public use at www.ies.wisc.edu/nplichen. As of this writing, the database contains 25,995 records of lichens in 144 national park units. The number of records...
Wolf population persistence in real life
L.D. Mech
O. Liberg, editor(s)
2005, Conference Paper, Genetic aspects of viability in small wolf populations with special emphasis on the Scandinavian wolf population
Wolf (Canis lupus) populations tend to be resilient and to persist for long periods, and several characteristics contribute to their resilience and persistence: (1) age of first reproduction (2-3 years), (2) high annual litter size (mean = 6), (3) low dispersal age (1-3 years), and (4) long potential dispersal distance...
Lake Michigan wetlands: classification, concerns, and management opportunities
Douglas A. Wilcox
T. Edsall, M. Munawar, editor(s)
2005, Book chapter, State of Lake Michigan: Ecology, Health, and Management
The wetlands that border Lake Michigan are an extremely important component of the lake ecosystem. In this paper, I will review the status of wetland classifications used for Lake Michigan and the other Great Lakes, as well as the major management concerns and opportunities presented by Lake Michigan wetlands....
Population manipulations
C.K. Dodd Jr.
M.J. Lannoo, editor(s)
2005, Book chapter, Declining Amphibians: The Conservation Status of United States Species.
Abstract not supplied at this time...
Rana muscosa Camp 1917, Mountain Yellow-legged Frog
Vance Vredenburg, Gary M. Fellers, Carlos Davidson
Michael Lannoo, editor(s)
2005, Book chapter, Amphibian Declines: The Conservation Status of United States Species. Volume 2: Species Accounts.
No abstract available at this time...
The effects of sea level and palaeotopography on lithofacies distribution and geometries in heterozoan carbonates, south-eastern Spain
C.L. Johnson, E. K. Franseen, R.H. Goldstein
2005, Sedimentology (52) 513-536
This study utilized three-dimensional exposures to evaluate how sea-level position and palaeotopography control the facies and geometries of heterozoan carbonates. Heterozoan carbonates were deposited on top of a Neogene volcanic substrate characterized by palaeotopographic highs, palaeovalleys, and straits that were formed by subaerial erosion, possibly original volcanic topography, and faults...
Decision making with environmental indices
Dana L. Hoag, James C. Ascough II, C. Keske-Handley, Lynne Koontz
A.R. Burk, editor(s)
2005, Book chapter, New trends in ecology research
Since Ott's seminal book on environmental indices (1978), the use of indices has expanded into several natural resource disciplines, including ecological studies, environmental policymaking, and agricultural economics. However, despite their increasing use in natural resource disciplines, researchers and public decision makers continue to express concern...
Mountain Systems
C. Korner, M. Ohsawa, and others
R. Hassan, R. Scholes, N. Ash, editor(s)
2005, Book chapter, Ecosystems and human well-being: Current state and trends, Volume 1
No abstract available....