Northern Prairie Wildlife Research Center
Biological Resource -- Nongame Birds, Small Mammals, Herptiles, Fishes: Sand Lake National Wildlife Refuge, 1995-1996 gives results of a survey conducted to determine abundance and distribution of nongame species at Sand Lake National Wildlife Refuge in Brown County, South Dakota.
Biological Resource -- The Wolf Dilemma in Minnesota: Can You Help Solve It? seeks public input on management of the Minnesota wolf population to minimize having to kill an increasing number of wolves each year.
Biological Resource -- Tolerance by Denning Wolves, Canis lupus, to Human Disturbance reports observations of Wolves tolerating human activities in close proximity to dens and rendezvous sites with pups.
Update -- Dragonflies and Damselflies (Odonata) of the United States and Mayflies of the United States have been updated to reflect the addition of new county records.
Announcements -- A vacancy announcement for a research ecologist/botanist to work out of the Center's headquarters in Jamestown, North Dakota, has been added to the Announcements page.
Biological Resource -- A Surface-Associated Activity Trap for Capturing Water-Surface and Aquatic Invertebrates in Wetlands assesses the performance of a surface-associated activity trap relative to a conventional activity trap based on non-detection rates and relative abundance estimates for 13 taxa of common aquatic invertebrates.
Biological Resource -- Factors Limiting Mallard Brood Survival in Prairie Pothole Landscapes examines factors affecting survival of mallard broods in prairie pothole landscapes.
Biological Resource -- Killing of a Muskox, Ovibos moschatus, by Two Wolves, Canis lupus, and Subsequent Caching describes the killing of a cow Muskox by two wolves on Ellesmere Island and discusses implications of their subsequent behavior for deriving food-consumption estimates.
Biological Resource -- Do Mini-refuges Supply Wintering Northern Pintails with Important Diurnal Roost Sites? Response to Rave further addresses the issue of importance of mini-refuges relative to permanent, open-water pools to pintails in southwest Louisiana.
Update -- Updates have been made to several checklists for Alaska, Arizona, California, Colorado, Delaware, Florida, Kansas, Maine, Massachusetts, New Hampshire, New Mexico, North Carolina, North Dakota, Ohio, South Carolina, Texas, Utah, Virginia, and Washington in Bird Checklists of the United States.
Update -- Butterflies of North America and Moths of North America have been updated to reflect the addition of new photos.
Biological Resource -- Acute Toxicity of Fire-Control Chemicals, Nitrogenous Chemicals, and Surfactants to Rainbow Trout examines the acute toxicity of ammonia-based fire retardants, surfactant-based fire-suppressant foams, nitrogenous chemicals, and anionic surfactants to juvenile rainbow trout.
Biological Resource -- The patterns of selection by wolves preying on moose, caribou, and Dall sheep in Denali National Park and Preserve were studied from 1986 through early 1992 and are described in Patterns of Prey Selection by Wolves in Denali National Park, Alaska.
Biological Resource -- Annotated Bibliography of Fire Literature Relative to Northern Grasslands in South-central Canada and North-central United States provides a condensed reference (as of 1989) of fire literature for resource managers with an interest in fire ecology.
Update -- Numerous high quality images of flowering plants have been added to Native Wildflowers of the North Dakota Grasslands.
Update -- Many entries have been added to Evaluation of Restored Wetlands in the Prairie Pothole Region. This searchable resource now contains 2,274 citations.
Update -- Additional information, including some species photos, species accounts, and a description of the environmental attributes of North Dakota, is now available in Breeding Birds of North Dakota.
Update -- Numerous species photos have been added to South Dakota Breeding Bird Atlas.
Update -- Our Postcards From the Prairie page has been updated with new postcards and stamps.
Biological Resource -- The Challenge and Opportunity of Recovering Wolf Populations traces the history of the wolf's status and recovery and explores the dilemma of its management.
Biological Resource -- Regurgitative Food Transfer Among Wild Wolves presents the first detailed description and analysis of regurgitation behavior in a free-ranging wolf pack.
Biological Resource -- Identifying Predators and Fates of Grassland Passerine Nests Using Miniature Video Cameras reports on the use of a camera system specifically designed to monitor predation and other events at grassland passerine nests.
Update -- Species accounts for the Eastern Meadowlark and the Horned Lark are now available in Effects of Management Practices on Grassland Birds.
Update -- Updates have been made to several checklists for Kansas, Washington, Florida, Maine, Virginia, South Carolina, Texas, California, Arizona, Utah, Alaska, and Connecticut in Bird Checklists of the United States.
Announcements -- A vacancy announcement for a wildlife biologist has been added to the Announcements page.
Biological Resource -- Denning Behavior of Non-gravid Wolves reports on denning behavior of pseudopregnant wolves as well as of ovariectomized wolves.
Biological Resource -- Twenty-year Home-range Dynamics of a White-tailed Deer Matriline examines the seasonal migration and home-range dynamics of a multigeneration white-tailed deer (Odocoileus virginianus) matriline comprising six females from four generations spanning a 20-year period in northeastern Minnesota.
Biological Resource -- Lack of Reproduction in Muskoxen and Arctic Hares Caused by Early Winter? reports evidence and offers an alternative weather-based hypothesis for a decline in muskox and arctic hare populations on part of Ellesmere Island during winter 1997-1998, when neither ice crusts nor excessively deep snow prevailed.
Biological Resource -- Collecting on the Prairie: Early Oologists in North Dakota describes the practice of oology, the branch of ornithology that focuses on the study of eggs, during the late 1800's and early 1900's in North Dakota.
Biological Resource -- Uncommon Breeding Birds in North Dakota: Population Estimates and Frequencies of Occurrence presents frequencies of occurrence and statewide population estimates for uncommon bird species from surveys conducted in 1967, 1992, and 1993.
Biological Resource -- Alpha Status, Dominance, and Division of Labor in Wolf Packs describes the wolf-pack social order as it occurs in nature, discusses the alpha concept and social dominance and submission, and presents data on the precise relationships among members in free-living packs.
Biological Resource -- Reserve Design For Grasslands: Considerations For Bird Populations is a review of relevant findings, particularly landscape issues to consider when designing grassland reserves for breeding birds.
Biological Resource -- Effects of Fire in the Northern Great Plains provides information concerning fire effects on the grassland biome of the Northern Great Plains, with special emphasis on the use of fire for wildlife management.
Biological Resource -- Behaviour Patterns of Mallard (Anas Platyrhynchos) Pairs and Broods in Minnesota and North Dakota presents data for diurnal behaviour patterns of unmarked pairs and broods from a study of mallard breeding ecology in 1988-1991.
Biological Resource -- Habitat Use and Reproductive Success of Western Snowy Plovers at New Nesting Areas Created for California Least Terns examines the response of western snowy plovers to nesting habitat created to benefit California least tern populations in southern California.
Update -- Butterflies of North America has been updated to reflect many new county records for the state of North Carolina.
Update -- Moths of North America has been updated to reflect additional county records for the genus Schinia of the family Noctuidae.
Update -- New entries have been added to the Bibliography for Swift Foxes (Vulpes velox). This searchable resource now contains 342 citations pertinent to Swift Foxes.
Biological Resource -- Caterpillars of Eastern Forests is a field guide focusing on the eastern region's most frequently encountered species. This guide includes species descriptions, life cycle and morphology information, and tips on photographing, rearing, collecting, and preserving specimens.
Biological Resource -- Caterpillars of Pacific Northwest Forests and Woodlands is a field guide with keys to the identification of caterpillars commonly found in forests and woodlands of the Pacific Northwest. It contains sections describing the natural history, nomenclature, identification keys, and details for collection and preservation of specimens.
Biological Resource -- Death of a Wild Wolf from Canine Parvoviral Enteritis reports on the finding of the first direct evidence showing the effects of canine parvovirus (CPV) infection on free-ranging wild wolves.
Biological Resource -- Daily Departure and Return Patterns of Wolves, Canis lupus, from a Den at 80°N Latitude reports on daily patterns of Wolf departures from, and returns to, their den on Ellesmere Island, Northwest Territories, Canada during summers between 1988 and 1996.
Information -- Highlights of Fiscal Year 1999 is now available on the Information page.
Update -- Several new county records have been added to Atlas of North Dakota Butterflies.
Update -- Many new species photos and county records have been added to Dragonflies and Damselflies (Odonata) of the United States.
Update -- Common names are now included for most species covered in Stoneflies of the United States.
Biological Resource -- Prescribed Fire Effects on Biological Control of Leafy Spurge evaluates the effect of prerelease burning on establishment of flea beetle (Aphthona nigriscutis) colonies and the ability of established colonies to survive prescribed fire.
Biological Resource -- Habitat Associations of Migrating and Overwintering Grassland Birds in Southern Texas reports on the habitat associations of 21 species of grassland birds overwintering in or migrating through southern Texas during 1991-1992 and 1992-1993.
Update -- A Closer Look: The Cedar Waxwing, A Regular at Mother Nature's Fruit Bar, containing basic information on the Cedar Waxwing in North Dakota, has been added to A Closer Look Series from North Dakota Outdoors.
Biological Resource -- Foods and Foraging of Prairie Striped Skunks During the Avian Nesting Season contrasts annual and seasonal variation in occurrence of major food groups in skunk diets during the principal period of nesting by ducks and other birds.
Biological Resource -- Birds and Mammals Observed by Lewis & Clark in North Dakota, an excerpt from an article that first appeared in 1927 in North Dakota Historical Quarterly, provides an annotated list of all birds and mammals observed by Lewis and Clark during their trek through what is now North Dakota.
Biological Resource -- A New Era for Carnivore Conservation considers reasons why public attitude has shifted from one of persecuting carnivores to restoring carnivore populations in certain areas, and discusses current and future challenges in carnivore conservation.
Biological Resource -- An Example of Endurance in an Old Wolf, Canis lupus gives new insights into wolf endurance through a detailed description of an 11 to 13-year-old male Arctic wolf's activities.
Update -- New entries have been added to the Bibliography for Northern Pintails (Anas acuta). This searchable resource now contains 1,963 citations pertinent to Northern Pintails.
Update -- New entries have been added to the Bibliography for Lesser Scaup (Aythya affinis). This searchable resource now contains 1,291 citations pertinent to Lesser Scaup.
Update -- Butterflies of North America has been updated to reflect many new county records for the state of Virginia.
Announcements -- Vacancy announcements for additional field and research assistants were recently added to the Announcements page.
Biological Resource -- Density and Fledging Success of Grassland Birds in Conservation Reserve Program Fields in North Dakota and West-central Minnesota examines breeding densities and fledging success of grassland birds in Conservation Reserve Program fields and in an alternative habitat of similar structure.
Biological Resource -- Evaluation of the Bird Conservation Area Concept in the Northern Tallgrass Prairie Annual Report: 1999 contains findings from the second year of a study to test the concept that Bird Conservation Areas can maintain populations of breeding grassland birds.
Biological Resource -- In Do Wolves Affect White-Tailed Buck Harvest In Northeastern Minnesota?, data from the central Superior National Forest of northeastern Minnesota from 1975 to 1997 are examined to test the extent to which wolves might influence deer hunting there.
Biological Resource -- Is Incest Common In Gray Wolf Packs? suggests that full siblings or a parent and their offspring rarely mate and that incest avoidance is an important constraint on gray wolf behavioral ecology.
Biological Resource -- Wolf Management In The 21st Century: From Public Input to Sterilization considers possible solutions to the growing problem of maintaining wolf populations in areas where they do not compete seriously with human beings but restricting them from locales where they do.
Update -- Updates have been made to several checklists for Arizona, Arkansas, Minnesota, California, Alaska, North Dakota, and Washington in Bird Checklists of the United States.
Biological Resource -- Population Energetics of Northern Pintails Wintering in the Sacramento Valley, California presents a population energetics model for predicting habitat requirements of wintering pintails in the Sacramento Valley during a dry and a wet winter.
Biological Resource -- Effects of a Legal Drain Clean-out on Wetlands and Waterbirds: A Recent Case History reports on a study undertaken to evaluate whether the clean-out of a drain in Sargent County, North Dakota altered adjacent wetlands and adversely affected associated waterbird populations.
Biological Resource -- Long-term Declines in Nest Success of Prairie Ducks examines whether nest success of upland-nesting ducks in the Prairie Pothole Region declined over time (1935-92), was related to variation in soil moisture, differed among species, or differed between ecogeographic regions.
Biological Resource -- The Alien Plants Ranking System is a computer-implemented system to help land managers of grassland and prairie parks in the central United States make difficult decisions concerning invasive nonnative plants.
Update -- Species accounts for the Long-billed Curlew, Swainson's Hawk, and Vesper Sparrow are now available in Effects of Management Practices on Grassland Birds.
Update -- Many poor quality images of flowering plants in Native Wildflowers of the North Dakota Grasslands have been replaced with much higher quality ones.
Update -- Butterfly species accounts in Butterflies of North America have been updated to reflect recent changes in butterfly taxonomy. In addition, many new distribution records and photo images are included.
Update -- Additional distribution records and species photos are now included in Moths of North America.
Announcements -- Vacancy announcements for several seasonal research technicians have been recently added/updated on the Announcements page.
Information -- Long Term Ecological Monitoring in Prairie Parks, a Northern Prairie Wildlife Research Center fact sheet describes and summarizes various monitoring protocols under development by or coordinated by the Missouri and Arkansas Field Stations. Read about it under Northern Prairie Studies and Activities in the Information section.
Biological Resource -- Le Conte's Sparrows Breeding in Conservation Reserve Program Fields: Precipitation and Patterns of Population Change examines long-term population changes of Le Conte's Sparrows breeding in perennial grassland fields enrolled in the Conservation Reserve Program on the northern Great Plains.
Biological Resource -- Regional Trends of Biological Resources -- Grasslands, a chapter in the U.S. Geological Survey's Status and Trends of the Nation's Biological Resources, features several animals and plants dependent on native grassland and provides insight into the relationship between remaining native grassland and biological resources by reviewing available, current information and by describing threats.
Update -- Many entries have been added to the Wetland Restoration Bibliography. This resource provides scientists, managers, students, and policy-makers with ready access to current information on wetland restoration.
Update -- Browse or search the Arctic Goose Joint Venture Contact List, 1999. Included are names, phone numbers, and addresses of many individuals involved with migratory bird issues in North America.
Biological Resource -- Modeled after the popular Butterflies of North America and Moths of North America Web sites, Mayflies of the United States, Stoneflies of the United States, and Odonata of the United States present preliminary distribution information on the three groups of insects, as determined from a review of published literature.
Announcements -- Anticipated vacancy announcements for several seasonal research technicians and a research plant ecologist were recently added to the Announcements page.
Biological Resource -- Influence of Agriculture on Aquatic Invertebrate Communities of Temporary Wetlands in the Prairie Pothole Region of North Dakota, USA reports on an investigation to determine if taxon richness and abundance of invertebrate resting eggs, shells, and cases remaining in the soils of temporary wetlands are reduced by agricultural activity.
Biological Resource -- Foods of American Badgers in West-central Minnesota and Southeastern North Dakota During the Duck Nesting Season reports on food habits of badgers in the region and discusses the importance of ducks and duck eggs as badger foods.
Biological Resource -- Biological Control of Leafy Spurge provides information on a major biological control program to combat the spread and reduce infestations of the aggressive, exotic perennial weed known as leafy spurge.
Announcement -- A vacancy announcement for a Computer Specialist to serve as webmaster at Northern Prairie Wildlife Research Center has been added to the Announcements page.
Biological Resource -- Aging Elk provides information for estimating an elk's age based on tooth development and wear.
Biological Resource -- Mallard Use of Nesting Islands Depends on Surrounding Upland Cover examines the use of constructed islands by nesting mallards in relation to the amount of competing nesting cover in the surrounding landscape.
Biological Resource -- Spring-staging Ecology of Waterfowl in Nebraska -- Then Versus Now reports on a 2-year study to examine diets and nutrient-reserves of snow geese, white-fronted geese, and northern pintails and to estimate time-activity budgets of both goose species in Nebraska's Rainwater Basin.
Update -- New and updated checklists for California, Illinois, Minnesota, New Mexico, North Dakota, Oklahoma, Pennsylvania, Texas, and Virginia have been added to Bird Checklists of the United States.
Update -- Lists for various national parks and monuments in Colorado have been added to the Related Arthropods section of Insects and Related Arthropods of North America.
Biological Resource -- South Dakota Wetlands: A Guide to Wetlands Management & Development provides information about South Dakota's wetlands, along with various wetland conservation practices and incentives available to land owners.
Biological Resource -- Testing Releasable GPS Radiocollars on Wolves and White-tailed Deer evaluates longevity of releasable GPS collars and number of locations obtained with them when used on free-ranging wolves and white-tailed deer.
Biological Resource -- Urinary 3-methylhistidine and Progressive Winter Undernutrition in White-tailed Deer examines effect of chronic moderate and severe nutritional restriction during winter on ratios of urinary 3-methylhistidine:creatinine in adult, white-tailed deer and the relationship of these ratios to urinary urea nitrogen:creatinine ratios.
Update -- Insects and Related Arthropods of North America, formerly Insects of North America, now provides access to site-specific lists of insects and related arthropods that occur at various parks, refuges, and management units within North America.
Update -- Numerous changes, including many new species photos, numerous taxonomic changes, a major update to distribution maps for South Dakota, and a number of minor changes to other distribution maps, were recently made to Butterflies of North America.
Update -- Many new species photos were recently added to Moths of North America.
Biological Resource -- First Record Of Coccidiosis In Wolves, Canis lupus documents the occurrence of coccidiosis in three Wolf pups from two litters in the Superior National Forest.
Biological Resource -- Effects of Predator Exclosure Design on Duck Brood Movements examines the behavior of female mallards and gadwalls with broods attempting to exit various types of predator exclosures.
Biological Resource -- Riparian Areas of South Dakota: Riparian Management Benefits discusses various ways to protect water quality, maintain stream function, and provide important fish and wildlife habitat.
Update -- A Closer Look: The Yellow-Rumped Warbler, containing basic information on the Yellow-Rumped Warbler in North Dakota, has been added to A Closer Look Series from North Dakota Outdoors.
Biological Resource -- Piping Plovers and Least Terns of the Great Plains and Nearby: A Draft Protocol for Assessing Piping Plover Reproductive Success on Great Plains Alkali Lakes proposes standardized instructions to facilitate consistent, accurate, and minimally invasive monitoring of piping plover reproductive success on Great Plains alkali lakes.
Biological Resource -- Habitat Management for Migrating and Wintering Canada Geese: A Moist-Soil Alternative integrates information
from unpublished studies in Missouri and
Biological Resource -- Effects of Harness Transmitters on Behavior and Reproduction of Wild Mallards compares radio-marked and unmarked female mallards in terms of percent time observed feeding, resting, and preening; nest initiation date; and clutch size and egg volume.
Biological Resource -- Estimating Nest Success: When Mayfield Wins investigates the performance of the Apparent and Mayfield estimators of nest success under a variety of circumstances.
Announcement -- A vacancy announcement for a Biological Science Technician has been added to the Announcements page. Duties will include but not limited to conducting aquatic plant, breeding bird, and total bird surveys.
Biological Resource -- Estimated Costs of Maintaining a Recovered Wolf Population in Agricultural Regions of Minnesota compares the costs of maintaining a wolf population in Minnesota at levels recommended by the Eastern Timber Wolf Recovery Team and those proposed by the Minnesota Wolf Management Roundtable.
Biological Resource -- The Insignificance of Statistical Significance Testing describes statistical hypothesis testing, discusses common but incorrect interpretations of resulting P-values, mentions some shortcomings of hypothesis testing, indicates why hypothesis testing is conducted, and outlines some alternatives.
Biological Resource -- Attracting Wildlife to Your Back Yard: A Guide to Increasing Wildlife Diversity and Aesthetic Value Around Your Home contains useful information about plants and animals to homeowners interested in making their surroundings more attractive to wildlife.
Biological Resource -- Giant Canada Goose Flocks in the United States addresses current management issues, future management implications, and research needs based on current information available for breeding population size, distribution, annual production, and harvest of Giant Canada Geese.
Biological Resource -- Sandhill Cranes and the Platte River looks at factors responsible for the current springtime staging pattern of sandhill cranes in the Platte River Valley of Nebraska, and concludes with a description of efforts underway to protect the habitat that supports sandhill cranes and other waterbirds.
Biological Resource -- Are Mallards Declining in North America? considers whether mallard numbers declined from the mid-1950s to the mid-1980's, and if so, were the changes related to variation in wet ponds?
Biological Resource -- Waterfowl Production on the Woodworth Station in South-central North Dakota, 1965-1981 summarizes results of 17 years of data on waterfowl productivity relative to various land management treatments.
Biological Resource -- Wetlands of the Prairie Pothole Region: Invertebrate Species Composition, Ecology, and Management describes the highly dynamic nature of prairie pothole wetlands and provides a conceptual framework for invertebrate studies that considers important hydrologic, chemical, and climatic events.
Information -- A Web site describing the research program of Northern Prairie Wildlife Research Center's University of Arkansas Field Station is now accessible from the Information page.
Update -- More species photos and some miscellaneous county records have been added to Butterflies of North America and Moths of North America.
Update -- Duck Nesting in the Northern Great Plains describes and summarizes results of an extensive inventory and monitoring effort of duck nest success in the northern Great Plains. This update includes results of the most recent data analyses.
Announcement -- "Operation Crane Watch" allows the public to monitor the migration of sandhill cranes that have been equipped with satellite transmitters. Find out more in the newspaper article "Computer Buffs Able to Track Sandhill Crane: Satellite Transmitters Allows Easy Monitoring," which can be found on the Announcements page.
Announcement -- Learn about a Northern Prairie Wildlife Research Center study which examines what effects grassland size and the habitat surrounding the grassland have on the nesting success of grassland songbirds in "USGS Study of grassland songbirds being conducted in Sheyenne National Grasslands." The article can be found on the Announcements page.
Update -- Insects of North America has been updated to include dragonfly lists for various state parks in Texas.
Biological Resource -- Eastern Bluebird (Sialia sialis) provides an introduction to the habitat requirements of the eastern bluebird and is designed to assist in the development of a comprehensive bluebird management plan.
Biological Resource -- Wood Duck (Aix sponsa) provides an introduction to the habitat requirements of the wood duck and is designed to assist in the development of a comprehensive wood duck management plan.
Update -- The Resource Finder has been updated to allow users to perform keyword searches of our many biological resources. In addition, resources can be searched for on the basis of type (research, management, or general) and audience (technical, semi-technical, or non-technical). Output from Resource Finder has been enhanced to include a brief description of each resource and the keywords assigned to it. Resource Finder, along with revised instructions on its use, can be found on the Biological Resources page.
Update -- Moths of North America has been updated to include additional photographs of several Noctuidae species.
Biological Resource -- Environmental Characteristics Associated with the Occurrence of Avian Botulism in Wetlands of a Northern California Refuge examines wetland attributes associated with outbreaks of avian botulism at Sacramento National Wildlife Refuge, California.
Biological Resource -- Mate Loss in Winter Affects Reproduction of Mallards examines subsequent pair formation and reproductive performance of wild-strain, captive, yearling female mallards that experienced simulated mate loss.
Biological Resource -- In Assessment of a Mallard Model in Minnesota's Prairie Coteau, field estimates of mallard parameters from three southwest Minnesota sites are compared to predictions from a simulation model designed to assist managers with planning.
Biological Resource -- Wetland Resources of Eastern South Dakota identifies the extent, characteristics, and location of eastern South Dakota wetlands, mapped and classified by the U.S. Fish and Wildlife Service National Wetlands Inventory, and describes demographics of wetland basins.
Information -- Browse or search the North American Flyways Directory, 1998. Included are names, phone numbers, and addresses of flyway council and technical committee members and a host of other organizations and individuals involved with migratory bird issues in North America.
Update -- A literature synthesis for Upland Sandpiper (Bartramia longicauda) is now available in Effects of Management Practices on Grassland Birds.
Update -- A PDF version of Building Nest Structures, Feeders, and Photo Blinds for North Dakota Wildlife is now available to facilitate printing of this resource.
Biological Resource -- Interpreting Evidence of Depredation of Duck Nests in the Prairie Pothole Region is designed to help investigators more accurately and objectively collect and interpret evidence of depredation at duck nests in the Prairie Pothole Region.
Biological Resource -- Information on the habitat distributions and territorial behavior of the dickcissel and red-winged blackbird can be found in Habitat Distribution and Territoriality In the Dickcissel and Red-Winged Blackbird.
Biological Resource -- Attracting Bluebirds and Other Cavity Nesting Songbirds in North Dakota features information on how to develop, manage, and maintain a bluebird trail and increase the available nesting habitat for bluebirds.
Update -- Butterflies of North America has been updated to reflect new county records for Vermont, additional species photos, and numerous changes in the taxonomy of North American butterflies.
Update -- Moths of North America has been updated to include coverage of additional Noctuidae species and to correct truncation errors in the names of several Noctuidae species.
Biological Resource -- Effects of Fire on Bird Populations in Mixed-grass Prairie describes the effects of prescribed fire on common terrestrial birds at a mixed-grass prairie site in east-central North Dakota.
Biological Resource -- Results of a radio telemetry study to estimate survival rates of immature mallards from fledging to autumn migration can be found in Survival of Postfledging Mallards in Northcentral Minnesota.
Biological Resource -- Geographic Information Systems, a chapter in the book Research and Management Techniques for Wildlife Habitats, provides wildlife managers and wildlife management students an overview of the technology of Geographic Information Systems.
Announcement -- A vacancy announcement for two Biological Science Technicians has been added to the Announcements page. Technicians are needed to process aquatic invertebrate samples collected at field study sites.
Update -- The Resource Finder has been updated to allow users to perform author and title searches on our many biological resources. This search tool returns a list of resources, ordered by the number of times that the search string appears in each resource. Resource Finder, along with instructions on its use, can be found on the Biological Resources page.
Update -- Entries have been added to the annotated bibliography in Effects of Management Practices on Grassland Birds. The bibliography now contains 3,320 searchable citations.
Biological Resource -- Spread, Impact, and Control of Purple Loosestrife (Lythrum salicaria) in North American Wetlands documents the spread and impact of purple loosestrife in North America. This report details the authors' research and personal observations and synthesizes a vast body of literature on L. salicaria.
Biological Resource -- Avian Use of Purple Loosestrife Dominated Habitat Relative to Other Vegetation Types in a Lake Huron Wetland Complex contrasts avian breeding species richness, density, diversity, and use of vegetation zones dominated by loosestrife with other wetland zones where loosestrife was absent or not dominant.
Biological Resource -- Predators negatively influence duck recruitment in grassland ecosystems. Managers are in search of methods, particularly nonlethal methods, for reducing nest depredation. Effects of Food Supplementation on Depredation of Duck Nests in Upland Habitat examines the provision of supplemental food as a method for reducing depredation of upland-duck nests, especially by striped skunks (Mephitis mephitis).
Biological Resource -- A Survey of the Herpetofauna of the Comanche National Grasslands in Southeastern Colorado, a report of activities conducted in 1995-1997, provides baseline data on the occurrence and relative abundance of 36 species of amphibians and reptiles in the Grasslands.
Update -- Additional citations have been added to Bibliography for Swift Foxes (Vulpes velox). This resource now contains 319 searchable citations.
Update -- New or updated species accounts for the American Bittern, Willet, Wilson's Phalarope, Burrowing Owl, Le Conte's Sparrow, Nelson's Sharp-tailed Sparrow, Dickcissel, Lark Bunting, Sedge Wren, Western Meadowlark, Bobolink, Field Sparrow, and Lark Sparrow are now available in Effects of Management Practices on Grassland Birds.
Information -- Overviews of Northern Prairie's work dealing with grasslands, mammals, migratory birds, statistics and modeling, spatial data analysis, and wetlands are now available on the Information page.
Biological Resource -- Platte Search - Platte River Basin Bibliographic Information Retrieval System is a comprehensive searchable database of bibliographic information on approximately 1,500 publications, reports, projects and academic studies related to the Platte River Basin
Biological Resource -- Evaluation of the Bird Conservation Area Concept in the Northern Tallgrass Prairie Annual Report: 1998 contains findings from the first year of a study to test the idea that Bird Conservation Areas can maintain populations of breeding grassland birds.
Biological Resource -- A brief review of the ecological roles of ants in tallgrass prairies can be found in An Introduction to Ants (Formicidae) of the Tallgrass Prairie, which also includes their biogeographic and taxonomic characteristics, and their relationships to prairie restoration and management activities.
Biological Resource -- Reproductive Success of Belding's Savannah Sparrows in a Highly Fragmented Landscape examines the effects of fragmentation on resident populations of sparrows, the influence of habitat on reproductive success, identifies characteristics of breeding habitat, and discusses implications of the results for wetland conservation.
Announcement -- A vacancy announcement for a Computer Specialist has been added to the Announcements page. A computer specialist is needed to oversee the World-wide Web project at Northern Prairie Wildlife Research Center.
Announcement -- A vacancy announcement for a Computer Assistant has been added to the Announcements page. A computer assistant is needed to develop and maintain the Northern Prairie Wildlife Research Center Home Page.
Announcement -- The Central Flyway Waterfowl Council is accepting applications for temporary seasonal aides to help implement a duck banding program. Interested persons can find details on our Announcements page. Deadline for applications is June 15, 1999.
Announcement -- A vacancy announcement for an Ecologist has been added to the Announcements page. An ecologist is needed to work on the N.D. Gap Analysis project, specifically the vegetation and land cover mapping activities.
Announcement -- Highlights of Fiscal Year 1998 at Northern Prairie Wildlife Research Center have been added to the Announcements page.
Announcement -- Biologists from Northern Prairie Wildlife Research Center were recently in Nebraska capturing sandhill cranes and fitting them with radio and satellite transmitters. This is the second year of a five-year study of the Platte River system and the various factors that impact cranes. Read all about it in the Announcements section
Update -- In Operation Crane Watch, follow the movements of 16 additional satellite-monitored sandhill cranes as they make their way north to breeding grounds from their point of capture in Nebraska's central Platte River Valley.
Biological Resource -- Le Conte's Sparrow: Ephemeral Jewel of the Northern Great Plains contains results of long-term breeding bird survey in CRP fields for nine counties within Montana, North Dakota, South Dakota, and Minnesota.
Biological Resource -- Return of the Wolf? contains information on gray wolf sightings in North Dakota and discusses the likelihood of wolves establishing resident populations.
Biological Resource -- Produced by the North Dakota Parks and Recreation Department, North Dakota Prairie -- Our Natural Heritage gives a brief history of native prairie in North Dakota and provides information on programs and agencies concerned with the preservation of native prairie.
Announcement -- A vacancy announcement for a Statistician has been added to the Announcements page. A statistician is needed to provide advice, statistical consultation, and assistance in support of the Center's research, inventory, and monitoring programs.
Biological Resource -- Insects of North America, a work in progress, provides access to site-specific lists of insects that occur at various parks, refuges, and management units within North America. Professional and amateur lepidopterists are invited to contribute to the site. See the opening page of the resource for details.
Biological Resource -- Southern Wetland Flora is a field guide containing color photographs, line drawings, distinguishing features, range maps, and textual descriptions for 300 species of wetland plants that occur in the southern U.S. An identification key and illustrated glossary are included.
Biological Resource -- Northeast Wetland Flora is a field guide containing color photographs, line drawings, distinguishing features, range maps, and textual descriptions for 300 species of wetland plants that occur in the northeastern U.S. An identification key and illustrated glossary are included.
Update -- Butterflies of North America and Moths of North America opening pages have been reorganized to make them easier to navigate.
Update -- Butterflies of North America: A section entitled "State and Regional References" has been added to species entries for individual states. Included are books and other works that provide information on butterflies in general at the state or regional level.
Update -- Moths of North America: State-level distribution maps for the Catocalinae, Hadeninae, and Noctuinae subfamilies of the Noctuidae, Owlet Moths are now available for the conterminous United States.
Information -- Information about the Wolf Project headed by Dr. L. David Mech at Northern Prairie's University of Minnesota Field Station has been added to the Facilities page.
Update -- Numerous new and updated checklists have been added to Bird Checklists of the United States. New state maps have also been added to help readers identify agency affiliation of parks, refuges, and other government lands.
Update -- How Can I Tell if a Resource Has Been Updated Since My Last Visit? has been added to our Frequently Asked Questions section.
Update -- New entries have been added to the Bibliography of Northern Pintails. This searchable resource now contains 1,936 citations pertinent to Northern Pintails.
Update -- Twenty-six new species occurances, up-to-date with 1998 data, have been added to Atlas of North Dakota Butterflies.
Update -- New species accounts have been added to Moths of North America.
Information -- A New Center for Waterfowl Research, an article written in 1966 about the opening of Northern Prairie Wildlife Research Center, provides a historical perspective on the Center's mission. Read about it in the Information section.
Announcement -- A vacancy announcement for an Ecologist has been added to the Announcements page. An ecologist is needed to work on the N.D. Gap Analysis project, specifically the vegetation and land cover mapping activities.
Announcement -- Doug Johnson, leader of the Grassland Ecosystem Initiative Team at Northern Prairie, was recently honored by the North Dakota Chapter of the Wildlife Society. Read all about it in the Announcements section.
Biological Resource -- Declines of Greater and Lesser Scaup Populations: Issues, Hypotheses, and Research Directions is a summary report for the scaup workshop held 9-10 September 1998 in Jamestown, North Dakota.
Update -- Species accounts for the Ferruginous Hawk and McCown's Longspur, along with numerous updates to existing accounts, have been added to Effects of Management Practices on Grassland Birds.
Announcement -- A vacancy announcement for six Biological Science Technicians has been added to the Announcements page. Technicians are needed to conduct detailed vegetation surveys in Theodore Roosevelt National Park.
Announcement -- Northern Prairie Wildlife Research Center has dedicated a portion of its research funding to support employment opportunities for students from the Anne Carlsen Center for Children. See the article entitled "Research Center teams up with Anne Carlsen Center" in the Announcements section for additional information.
Announcement -- TEAM Leafy Spurge announced the addition of seven new projects for the summer of 1999, including two studies conducted by Northern Prairie staff. Learn more in the Announcements section.
Announcement -- Despite recent improvements in water conditions on the breeding grounds, lesser and greater scaup populations have steadily declined since the early 1980s. To facilitate research into this problem, the U.S. Geological Survey's Northern Prairie Wildlife Research Center and Ducks Unlimited Canada sponsored a workshop on the topic. Find out more in the Announcements section.
Announcement -- In December 1998, Jamestown area residents and Northern Prairie staff participated in the annual National Audubon Society's Christmas Bird Count. See the article entitled "Jamestown area bird count finds 35 species" in the Announcements section for additional information.
Announcement -- Northern Prairie Wildlife Research Center's employees raised $130 for the Salvation Army during the Center's annual silent auction. Read about it in the Announcements section.
Biological Resource -- A Bibiliography on Bison (Bison bison) contains selected references to scientific literature on the North American bison (Bison bison) and European bison (Bison bonasus).
Biological Resource -- A Miniature Camera System for Studies of Grassland Passerine Nests contains information on a study to design and test a miniature camera system suitable for determining nest fates and identifying predators at nests of grassland passerines.
Biological Resource -- Selected Chapters From "Ecology and Management of Breeding Waterfowl" contains four papers presented at the International Symposium on the Ecology and Management of Breeding Waterfowl held in August, 1987 in Winnipeg, Manitoba, Canada.
Biological Resource -- Bibliography for Swift Foxes (Vulpes velox) provides citations for peer-reviewed journal papers, theses, and unpublished reports that contain information about the Swift Fox.
Announcement -- A vacancy announcement for three Summer Field Technicians (Plant Ecology) has been added to the Announcements page. Technicians are need for collecting ecological field data; surveying native and non-native plants; surveying herbivores and pathogens on prairie plants and making observations on their effects on vegetation; and collecting soil, seedbank and other environmental data following an established protocol.
Announcement -- A vacancy announcement for several temporary Crew Leaders and Field Assistants has been added to the Announcements page. Crew leaders and field assistants are needed for grassland bird studies in the Great Plains, including Nebraska, North Dakota, and Minnesota.
Announcement -- Using miniature camera systems, biologists at Northern Prairie Wildlife Research Center documented white-tailed deer depredating songbird nests. See the article entitled "Deer and elk - Caught on Tape - 'Herbivores' busted preying on bird nests" in the Announcements section for additional information.
Biological Resource -- Interpreting Carnivore Scent-Station Surveys contains results of an evaluation of the statistical properties of scent-station indices based on analyses of data collected in Minnesota during 1986-93.
Biological Resource -- The aim of Aquatic and Wetland Vascular Plants of the Northern Great Plains is to provide a complete manual of the vascular plants growing in wetland habitats of the northern plains. Taxonomic keys, plant descriptions,distribution maps, and statements of range and habitat preferences are provided to fulfill this primary objective.
Biological Resource -- Symposium: Managing Predation to Increase Production of Wetland Birds features abstracts of papers presented at an international symposium on managing predation held at Jamestown, North Dakota, in 1990.
Biological Resource -- The Cottonwood Lake Study Area, located in Stutsman County, North Dakota, about 35 miles northwest of Jamestown, is internationally recognized as one of the most intensively studied wetland complexes in North America. This resource contains background information on the area and lists the more than 80 scientific publications, graduate theses, and presentations at scientific conferences that have resulted from studies conducted there.
Biological Resource -- In Checklist and "Pollard Walk" Butterfly Survey Methods on Public Lands two potential survey methods are evaluated and compared. Advantages and disadvantages of each are discussed, along with recommendations for their use.
Biological Resource -- Wetlands of the United States - Their Extent and Value to Waterfowl and Other Wildlife contains results of an early attempt at inventorying and classifying wetlands in the United States. Although results of this 1950's publication have been superseded by more recent and exhaustive efforts, this hard to find publication is widely cited in waterfowl and wetlands literature.