Northern Prairie Wildlife Research Center
Biological Resource -- Prairie Wildflowers and Grasses of North Dakota provides beginners with an overview of North Dakota's prairie wildflowers and grasses.
Biological Resource -- Records of the Henslow's Sparrows in Day and McPherson Counties and the First Nest Record for the Species in South Dakota describes recorded accounts of Henslow's Sparrows observed in two South Dakota counties.
Biological Resource -- A Critique of Wildlife Radio-tracking and its Use in National Parks: A Report to the U.S. National Park Service presents a review of the technology, possible alternatives, and future technological improvements of radio-tracking techniques to address National Park Service concerns about the actual or potential intrusiveness of radio-tracking.
Biological Resource -- Weights of Wild Mallard Anas platyrynchos, Gadwall A. strepera, and Blue-winged Teal A. discors During the Breeding Season studies the weights of several thousands of wild Mallard, Gadwall, and Blue-winged Teal in central North Dakota during 1976-81 to examine duckling growth patterns, adult weights, and the factors influencing them.
Update -- Several new and updated checklists have been added to Bird Checklists of the United States for Arizona, California, Colorado, Florida, Idaho, Illinois, Indiana, Maine, Minnesota, Montana, New Mexico, New York, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Washington, Wyoming, and Puerto Rico.
Update -- Butterflies of North America and Moths of North America have been updated to reflect many new county records and some additional new state records.
Update -- A searchable Colonial and Non-colonial Waterbird Bibliography has been added to the Effects of Management Practices on Wetland Birds resource.
Update -- New entries have been added to the Cottonwood Lake Study Area publications page.
Information -- The North American Flyways Directory, 2002 has been updated. 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.
Announcements -- A vacancy announcement for field technicians to assist with Nebraska Sandhill Crane studies was recently added to the Announcements page.
Biological Resource -- Tiger Beetles of the United States provides distribution information for tiger beetle species that occur in the conterminous U.S. This site offers species account information, photos, national- and state-level county distribution maps, as well as literature references.
Biological Resource -- “Standing Over” and “Hugging” in Wild Wolves, Canis lupus explores the posturing behaviors of “standing over” and “hugging” to help understand the nature of relationships among members of Wolf packs.
Biological Resource -- Early Nesting Record of Hooded Merganser in North Dakota describes a May 13th observation of a female hooded merganser with seven ducklings that helps document the beginning of the nesting season for hooded mergansers in North Dakota.
Biological Resource -- Diet of Canvasbacks During Breeding examines diets of canvasbacks breeding in southwestern Manitoba during 1977-81.
Update -- A species account and annotated bibliography for the Black Tern has been added to the Effects of Management Practices on Wetland Birds resource. Accounts for the American Avocet, Eared Grebe, Marsh Wren, and Yellow Rail have been updated to include drawings of each species.
Searchable Bibliographies -- A new search engine has been implemented to greatly reduce the time required to conduct searches within biological resources that contain searchable bibliographies. See the Search Instructions page for help with using the searchable bibliographies.
Biological Resource -- Impact of the Conservation Reserve Program on Duck Recruitment in the U.S. Prairie Pothole Region examines relationships between daily survival rates of duck nests in CRP cover and landscape-level habitat and population parameters for 5 duck species in North Dakota, South Dakota, and northeastern Montana.
Biological Resource -- Aging Moose is a guide intended to help successful hunters estimate the age of their moose.
Biological Resource -- Effects of Vegetation Manipulation on Breeding Waterfowl in Prairie Wetlands — A Literature Review offers a review of literature on the effects of fire and grazing on the wetlands used by breeding prairie waterfowl.
Update -- The Grays Lake Ecosystem resource has been updated with a revised Study Overview for the Comparison of Wetland and Upland Management Practices under the Research section.
Biological Resource -- Estimated Areal Extent of Colonies of Black-tailed Prairie Dogs in the Northern Great Plains describes an aerial survey conducted during 1997-1998 to estimate the extent of colonies of black-tailed prairie dogs (Cynomys ludovicianus) in the northern Great Plains states of Nebraska, North Dakota, South Dakota, and Wyoming.
Biological Resource -- Frequency of Egg and Nestling Destruction by Female Brown-headed Cowbirds at Grassland Nests uses miniature video-cameras at nests of grassland passerines to document the frequency of partial or complete destruction of eggs or nestlings by cowbirds.
Biological Resource -- Fuel Model Selection for BEHAVE in Midwestern Oak Savannas studies the use of BEHAVE, a widely distributed and accepted fire behavior predictive model, to determine which of four standardized fuel models produced the most accurate fire behavior predictions for oak savanna fuel conditions.
Biological Resource -- Conditioning of Sandhill Cranes During Fall Migration investigates changes in body mass and the magnitude of change in body nutrient consumption among Sandhill Cranes during the fall staging period.
Update -- A species account for the Lesser Prairie-Chicken is now available in Effects of Management Practices on Grassland Birds.
Update -- Northern Prairie's Publications Database has been updated to include new and previously unlisted publications. This searchable database now contains 1,362 entries.
Updates -- The following sites have all been updated to reflect numerous changes and additions to photos and county records from various states:
Update -- The initial addition of county records from the 2001 season has been made to Atlas of North Dakota Butterflies with a more complete update expected later this fall.
Update -- An updated butterfly checklist for Colorado National Monument and a new butterfly checklist for California have been added to Insects and Related Arthropods of North America.
Biological Resource -- Winter Severity and Wolf Predation on a Formerly Wolf-free Elk Herd describes a study of wolf predation on elk in Yellowstone National Park under severe (1997) and mild (1998) winter conditions 2-3 years after wolves were reintroduced to the park.
Biological Resource -- Managing Habitat for Grassland Birds — A Guide for Wisconsin is a guidebook designed to help managers plan and implement habitat management for grassland birds in Wisconsin.
Biological Resource -- Communal Roosting and Foraging Behavior of Staging Sandhill Cranes examines characteristics and use of activity ranges relative to energy expenditure and food availability, the role of communal roosts in foraging behavior, habitat preferences, and the influence of group size and predation on foraging and other behaviors in Sandhill Cranes.
Update -- New entries have been added to the publications listing for Cottonwood Lake Study Area.
Announcements -- An agenda and a pre-registration form have been added to the Prairie Day 2002 page. This year's second annual event is scheduled to be held July 13th in McHenry County near Granville, ND.
Biological Resource -- Relative Effects of Litter and Management on Grassland Bird Abundance in Missouri, USA investigates the effects of two aspects of prairie management—quantity of litter volume present, and the management practices that generated the vegetation structure—on three declining grassland songbirds.
Biological Resource -- Influence of Fire and Trapping Effort on Ground Beetles in a Reconstructed Tallgrass Prairie uses ground beetles to explore the effects of tallgrass prairie management techniques such as fire on prairie insects.
Biological Resource -- Forecasting Production of Arctic Nesting Geese by Monitoring Snow Cover with Advanced Very High Resolution Radiometer (AVHRR) Data discusses development of a mixture model that will help predict the reproductive success of Arctic nesting geese based on snow cover data derived from AVHRR imagery.
Biological Resource -- A New Device for Collection of Interstitial Water from Wetland Sediments describes a sampling device for collection of interstitial water from wetland sediments that facilitates “in situ” measurement of a wide range of abiotic parameters.
Update -- Northern Prairie's Publications Database has been updated to include new and previously unlisted publications. This searchable database now contains 1,350 entries.
Announcements -- A preliminary announcement for Prairie Day 2002, to be held July 13th in McHenry County, ND, has been added to the Announcements page.
Biological Resource -- In Statistics for Wildlifers: How much and what kind?, intended primarily for college students who aspire to become wildlife biologists, federal wildlife research center statisticians offer opinions on what wildlife biologists should know about statistics.
Biological Resource -- Survival of Adult Female Northern Pintails in Sacramento Valley, California provides estimates of winter survival for 190 adult female radio-tagged pintails in late summer in Sacramento Valley, California.
Biological Resource -- Movements and Habitat Use of Franklin's Ground Squirrels in Duck-Nesting Habitat gives results of a radio-telemetry study to determine the movements and habitat use patterns of adult Franklin's ground squirrels on a 152-ha Waterfowl Production Area in central North Dakota.
Update -- The 1998 revision of Migration of Birds summarizes information pertaining to the distribution and movements of birds in North America and other parts of the world to present important facts about our current understanding of the fascinating subject of bird migration.
Biological Resource -- Effects of Management Practices on Wetland Birds is a series of literature syntheses containing information on the habitat needs and management response of many species of North American wetland birds. Accounts are currently available for the Eared Grebe, Yellow Rail, American Avocet, Marsh Wren, and several species of grassland birds that occur in wetlands.
Biological Resource -- Evaluation of the Bird Conservation Area Concept in the Northern Tallgrass Prairie: Annual Report 2001 contains preliminary findings from the fourth year of a study to test the concept that Bird Conservation Areas can maintain populations of breeding grassland birds.
Biological Resource -- Dynamics of Green Ash Woodlands in Theodore Roosevelt National Park examines changes in species composition, plant density, and canopy coverage in green ash communities that were protected from livestock but exposed to foraging by native ungulates.
Biological Resource -- Observed Interactions Between Coyotes and Red Foxes reports accounts of interactions between coyotes and red foxes that aid in understanding relations between the two species.
Biological Resource -- Food Habits of Diving Ducks in the Great Lakes After the Zebra Mussel Invasion examines current consumption of zebra mussels by waterfowl in the Great Lakes region.
Biological Resource -- Research Access to Privately Owned Wetland Basins in the Prairie Pothole Region of the United States describes efforts to obtain access for research to 81 wetland basins on 69 farms in four zones of the Prairie Pothole Region of North Dakota, South Dakota, and Minnesota.
Biological Resource -- The Conservation Reserve Program: Habitat for Grassland Birds describes the bird populations found during three years of surveys on more than 300 CRP fields in western Minnesota, North Dakota, South Dakota, and eastern Montana.
Update -- The Links to Related Sites page of the North American Reporting Center for Amphibian Malformations has been revised to include over 60 links to sites with topics related to amphibians and amphibian malformations. An extract of these sites can be found on the How Can I Get Involved? page.
Update -- Northern Prairie's Publications Database has been updated to include new and previously unlisted publications. This searchable database now contains 1,337 entries.
Announcements -- Vacancy announcements for grassland bird studies and plant research positions were recently added to the Announcements page.
Biological Resource -- Predation on Waterfowl in Arctic Tundra and Prairie Breeding Areas: A Review reviews the status of waterfowl populations, adaptations of waterfowl that minimize impacts of predation, and the impacts of predation on waterfowl populations in two major North American breeding areas, the Arctic and Prairie Regions.
Biological Resource -- Status of the Arkansas Darter in South-central Kansas and Adjacent Oklahoma draws on data collected during 1994-1997 to assess the status of the Arkansas darter in south-central Kansas and adjacent areas of Oklahoma.
Biological Resource -- Aquatic Invertebrate Ecology During a Simulated Botulism Epizootic in a Sacramento Valley Wetland investigates the effect of decomposing duck carcasses on aquatic invertebrate numbers, biomass, and taxonomic composition in a seasonally flooded, impounded wetland in the Sacramento Valley, California during August-November 1988 and 1989.
Update -- Moths of North America has been updated to reflect many recent county records and some additional species photos.
Update -- A new butterfly checklist for New Mexico and several links to butterfly checklists for Texas have been added to Insects and Related Arthropods of North America.
Update -- The Grays Lake Ecosystem resource has been updated to include additional publication references, new graphs for the climate and water dynamics pages, and revised summaries for predator observations and small mammal populations.
Announcements -- A summary of the 2001 Jamestown Christmas Bird Count has been added to the Announcements page.
Announcements -- Anticipated vacancy announcements for several grassland bird study positions, including crew leader/data manager, were recently added to the Announcements page.
Biological Resource -- Duck Populations as Indicators of Landscape Condition in the Prairie Pothole Region examines hypothesized relations between indicators of landscape and wetland conditions and waterfowl abundance on 45 40 km² study sites in North Dakota for 1995-1996.
Biological Resource -- Use of Macroinvertebrates to Identify Cultivated Wetlands in the Prairie Pothole Region evaluates the use of macroinvertebrates as a potential tool to identify dry and intensively farmed temporary and seasonal wetlands in the Prairie Pothole Region.
Biological Resource -- Substantial use of commercial sunflower seeds as a food source by coyotes is documented in Coyote, Canis latrans, Use of Commercial Sunflower, Helianthus spp., Seeds as a Food Source in Western Kansas.
Update -- Butterflies of North America has been revised to reflect major updates to county records for Delaware, Florida, Maryland, Pennsylvania, Texas, and Virginia. In addition, many miscellaneous records for other states and numerous photos have been added.
Resource Finder -- The Resource Finder has a new search engine that greatly reduces the time required for Keyword, Title, and Author searches of biological resources. See the Resource Finder Instructions page for help with conducting searches of biological resources.
Biological Resource -- Lewis and Clark in North Dakota: Wildlife Then & Now provides a brief natural history of North Dakota from the first observations of Lewis and Clark in 1804 to the present.
Biological Resource -- Tooth Extractions From Live-captured White-tailed Deer describes how to extract incisorform teeth from live white-tailed deer for the purposes of obtaining age information.
Biological Resource -- American Bittern Depredates Sora reports observations of an American bittern attempting to consume a sora.
Biological Resource -- Influence of Age and Selected Environmental Factors on Reproductive Performance of Canvasbacks examines whether reproductive performance of female canvasbacks varied with age and selected environmental factors in southwestern Manitoba from 1974 to 1980.
Update -- Insects and Related Arthropods of North America has been updated to include a new butterfly checklist for Grand Teton National Park, Wyoming.
Biological Resource -- Area Requirements of Grassland Birds: A Regional Perspective considers the relation between both species-occurrence and density and patch size for 15 bird species on 303 restored grassland areas in nine counties in four northern Great Plains states.
Biological Resource -- Managing Minnesota's Recovered Wolves discusses potential problems that could arise in managing Minnesota's increasing wolf population which is expanding its range into more agricultural areas.
Biological Resource -- Research Techniques in Animal Ecology: Controversies and Consequences (Book Review) is a chapter-by-chapter review of an edited volume which covers a number of techniques widely used in animal ecology.
Biological Resource -- Species Composition and Trophic Structure of Insect Communities in Texas Prairies compares species composition and community structure of insects among habitats in the coastal and central prairie in Texas.
Biological Resource -- The U.S. Prairie Pothole Joint Venture Implementation Plan Update embodies the spirit of the North American Waterfowl Management Plan, endeavoring to incorporate an ecosystem approach to waterfowl management and seeking out opportunities to initiate new partnerships and enhance existing alliances.
Update -- Northern Prairie's Publications Database has been updated to include new and previously unlisted publications. This searchable database now contains 1,333 entries.
Biological Resource -- Alien Plant Invasion in Mixed-grass Prairie: Effects of Vegetation Type and Anthropogenic Disturbance examines characteristics that may influence the success of alien plant invasion in mixed-grass prairie at Theodore Roosevelt National Park, in western North Dakota, USA.
Biological Resource -- Seasonal Food Habits of Swift Fox (Vulpes velox) in Cropland and Rangeland Landscapes in Western Kansas studies the food habits of swift foxes occupying two distinct landscapes (dominated by cropland versus rangeland) in western Kansas by analysis of scats collected in 1993 and 1996.
Biological Resource -- Suggestions for Presenting the Results of Data Analyses provides suggestions for the presentation of research results from frequentist, information-theoretic, and Bayesian analysis paradigms, followed by several general suggestions.
Biological Resource -- Macromoths of Northwest Forests and Woodlands is a field guide to macromoth species belonging to 12 families of the order Lepidoptera commonly found in the forests and woodlands of the Pacific Northwest. This guide includes species descriptions, life cycle and morphology information, and tips on photographing, rearing, collecting, and preserving specimens.
Update -- Dragonflies and Damselflies (Odonata) of the United States, Mayflies of the United States, and Stoneflies of the United States have been moved to a new location on our server. Please note the new locations if you have these sites bookmarked.
Biological Resource -- The New Mexico Breeding Bird Atlas Project documents the current status and distribution of breeding bird species within the State of New Mexico in an effort to publish the data as a permanent record. This resource includes an atlas handbook, forms for atlasers, distribution maps of preliminary results, and volunteer information for those who wish to participate.
Update -- New entries have been added to the Bibliography for Swift Foxes (Vulpes velox). This searchable resource now contains 387 citations.
Update -- The North American Reporting Center for Amphibian Malformations (NARCAM) web site has recently updated its searchable bibliography which now includes 562 titles of publications pertaining to amphibian malformations and related subjects.
Biological Resource -- Plant Community Patterns on Upland Prairie in the Eastern Nebraska Sandhills studies the effect of topographic position on plant species composition of upland sites grazed by cattle in the eastern Sandhills of Nebraska.
Biological Resource -- Effects of Temperature Anomalies on the Palmer Drought Severity Index in the Central United States applies both theoretical and observational analyses to separate and compare temperature and precipitation effects on the Palmer Drought Severity Index.
Biological Resource -- Waterfowl Responses to the Conservation Reserve Program in the Northern Great Plains summarizes published and unpublished information on CRP contributions to waterfowl conservation in the northern Great Plains and discusses effects of emergency haying on nesting waterfowl and interrelationship of CRP to other conservation programs.
Biological Resource -- Wolf Restoration to the Adirondacks: The Advantages and Disadvantages of Public Participation in the Decision discusses contributing factors that may impact the decision to reintroduce the wolf back into New York State's Adirondack Mountains.
Update -- Butterflies of North America has been revised to reflect a major update to the Skipper Family (Hesperiidae), additional miscellaneous records for many states, and a few new photos.
Web Site Recognition:
Northern Prairie Wildlife Research Center's web resource, Butterflies of North America, has been selected as a "Best of Bugs" WWW site by the University of Florida's Entomology and Nematology Department. It has been judged to be in the top 5% of insect- or nematode-related WWW sites by a committee of professional entomologists and nematologists.
Biological Resource -- Prolonged Winter Undernutrition and the Interpretation of Urinary Allantoin:Creatinine Ratios in White-tailed Deer examines the effect of moderate and severe winter nutritional restriction on urinary allantoin:creatinine ratios of captive white-tailed deer that lost up to 32% body mass and relates these ratios to metabolizable energy intake, body-mass loss, and other reported nutritional indicators.
Biological Resource -- Grassland Bird Use of Conservation Reserve Program Fields in the Great Plains reviews the response of grassland bird populations to changes in grassland habitats that have resulted from the Conservation Reserve Program.
Biological Resource -- Prevalence of Giant Kidney Worm (Dioctophyma renale) in Wild Mink (Mustela vison) in Minnesota reports the first prevalence of giant kidney worm infection in wild Minnesota mink and the first analysis of the ages of infected mink.
Biological Resource -- Effects of Grazing on Nesting by Upland Sandpipers in Southcentral North Dakota studies the effect of grazing on nest density and nest success of upland sandpipers (Bartramia longicauda) in southcentral North Dakota from 1981 to 1987.
Update -- Insects and Related Arthropods of North America has been updated to include new butterfly checklists for various national parks in California, Maine, Nevada, and Wyoming, as well as an update of the checklist for Yosemite National Park, California.
Update -- Northern Prairie's Publications Database has been updated to include new and previously unlisted publications. This searchable database now contains 1,324 entries.
Biological Resource -- Predictable Interregional Movements by Female Northern Pintails During Winter identifies factors associated with initiation of movements by pintails in southwestern Louisiana to the Gulf Coast Region of Louisiana and Texas, the Rice Prairie Region of Texas, and the Mississippi Alluvial Valley.
Biological Resource -- Effects of Roadside Transect Width on Waterfowl and Wetland Estimates discusses the biases and benefits of using 800-m versus 400-m wide transects for surveys of waterfowl and their associated wetland habitat.
Biological Resource -- The Fishes of the Upper Moreau River Basin provides the first available survey of fish community data for the upper Moreau River, as well as physical habitat data that may allow future surveyors to discern trends in the health of the watershed and fish community.
Biological Resource -- Wolf-Bison Interactions in Yellowstone National Park provides an indication of how adaptable wolves are at killing prey species new to them.
Update -- Several new and updated checklists for Alaska, Arizona, Idaho, Maine, Massachusetts, Montana, Nevada, New Jersey, North Dakota, Oregon, and Washington have been added to Bird Checklists of the United States.
Update -- New entries, many with annotations, have been added to the Conservation Reserve Program Bibliography. This searchable, annotated resource now contains 359 citations.
Information -- Fact sheets for the Grasslands Ecosystem Initiative, Mammalian Studies, Studies for Migratory Birds, and Wetland and Aquatic Ecosystems have been updated and a new fact sheet for the Central Platte and Rainwater River Basin Area has been added to the Northern Prairie Studies and Activities section on the Information page.
Biological Resource -- Dispersal Patterns of Red Foxes Relative to Population Density examines dispersal patterns of red foxes in North Dakota based on recoveries of 363 of 854 foxes tagged as pups and relative to fox density.
Biological Resource -- A Model of the Productivity of the Northern Pintail presents results of adapting the Northern Prairie Wildlife Research Center's Mallard Model to synthesize existing knowledge of northern pintail breeding biology.
Biological Resource -- An Assessment of Predator Barriers and Predator Control to Enhance Duck Nest Success on Peninsulas examines whether the addition of predator barriers and predator removal from peninsulas in wetlands increases duck nest success over that on peninsulas without predator barriers and predator control.
Biological Resource -- A Record Large Wolf, Canis lupus, Pack in Minnesota documents a pack of 22-23 Wolves in central Minnesota, which is larger than the largest pack previously observed on the mainland in the midwestern U.S. during 650 wolf pack-years.
Update -- Butterflies of North America has been revised to reflect a major update to Florida records, additional miscellaneous records for many states, many new photos, and some changes in taxonomic treatment.
Update -- New entries have been added to the Bibliography for Northern Pintails (Anas acuta). This searchable resource now contains 1,975 citations.
Biological Resource -- Effects of Fire Retardant Chemical and Fire Suppressant Foam on Shrub Steppe Vegetation in Northern Nevada examines the effects of fire retardant chemical and fire suppressant foam application, alone and in combination with fire, on Great Basin shrub steppe vegetation.
Biological Resource -- Feeding Ecology of Northern Pintails and Green-winged Teal Wintering in California assesses the feeding ecology of pintails and green-winged teal in the southern Central Valley of California and relates this to habitat management patterns and habitat use by waterfowl.
Biological Resource -- Proximity of White-tailed Deer, Odocoileus virginianus, Ranges to Wolf, Canis lupus, Pack Homesites reports observations of white-tailed deer living within 1.8 km of wolf pack homesites without vacating their home ranges.
Update -- New entries have been added to the Bibliography for Lesser Scaup (Aythya affinis). This searchable resource now contains 1,320 citations.
Update -- New entries have been added to the Bibliography for Swift Foxes (Vulpes velox). This searchable resource now contains 376 citations.
Update -- Dragonflies and Damselflies (Odonata) of the United States have been updated to reflect the addition of new county records.
Update -- Moths of North America has been updated to reflect additional county records.
Update -- Northern Prairie's Publications Database has been updated to include new and previously unlisted publications from the past year.
Biological Resource -- Fall and Winter Foods of Northern Pintails in the Sacramento Valley, California provides information on food habits of northern pintails (Anas acuta) on 3 national wildlife refuges in the western portion of the Sacramento Valley, California, from August to March 1979-1982.
Biological Resource -- A Sampler for Quantifying the Vertical Distribution of Macroinvertebrates in Shallow Wetlands discusses a device developed to describe vertical distribution patterns of invertebrates in wetlands for research on avian botulism epizootiology and microhabitat selection by wetland macroinvertebrates in relation to vertical abiotic gradients.
Biological Resource -- Accuracy and Precision of Estimating Age of Gray Wolves by Tooth Wear evaluates the accuracy and precision of tooth wear for aging gray wolves (Canis lupus) from Alaska, Minnesota, and Ontario based on 47 known-age or known-minimum-age skulls.
Biological Resource -- Wildlife Habitat Management on the Northern Prairie Landscape describes briefly the Prairie Pothole Region ecosystem and indicates how it has been altered, especially as a habitat for migratory birds, and includes a discussion of objective setting for management.
Biological Resource -- Estimating Big Game Weights A Crash Course for the Curious presents equations for estimating live-weight from dressed weight and comparative averages of fall live-weights for six North Dakota big game species.
Biological Resource -- Incidental Catch of Marine Birds in the North Pacific High Seas Driftnet Fisheries in 1990 examines the incidental take of marine birds for Japanese, Korean, and Taiwanese driftnet fisheries.
Biological Resource -- Effects of Water Conditions on Clutch Size, Egg Volume, and Hatchling Mass of Mallards and Gadwalls in the Prairie Pothole Region examines the relationship between local water conditions and clutch size, egg volume, and hatchling mass of Mallards and Gadwalls on four study sites in North Dakota and Minnesota from 1988 to 1994.
Update -- New county records from the 2000 season and several new photos have been added to Atlas of North Dakota Butterflies.
Update -- Caterpillars of Eastern Forests has been updated to include species thumbnail photos for each family.
Update -- New entries have been added to the publications listing for Cottonwood Lake Study Area.
Update -- Effects of Management Practices on Grassland Birds has been updated to reflect the inclusion of recently published literature into the species accounts, several hundred new references in the bibliography, and the addition of many annotations to the bibliography.
Information -- Highlights of Fiscal Year 2000 for USGS Northern Prairie Wildlife Research Center is now available on the Information page.
Biological Resource -- Daily nest predation rates are related to indices of activity of eight egg-eating predators, precipitation during the nesting season, and measures of wetland conditions in Importance of Individual Species of Predators on Nesting Success of Ducks in the Canadian Prairie Pothole Region.
Biological Resource -- The North American Reporting Center for Amphibian Malformations, an article, describes the Reporting Center and the variety of features available on its Web site, presents an example of a summary analysis that can be conducted with its data, discusses caveats about the data, and makes recommendations about systematic surveys to better understand patterns and trends in the incidence of malformed amphibians.
Biological Resource -- Assessing Factors That May Predispose Minnesota Farms To Wolf Depredation on Cattle discusses factors that may predispose farms in Minnesota to wolf predations.
Biological Resource -- Evaluation of a Mallard Productivity Model reviews the mallard productivity model and describes some uses and improvements that increase its realism and applicability, including naturally occurring changes in wetland habitat, catastrophic weather events, and the migrational homing of mallards.
Biological Resource -- Duck Nest Success on Conservation Reserve Program Land in the Prairie Pothole Region examines nest success of dabbling ducks on CRP land and compares it with success in planted nesting cover on U.S. Fish and Wildlife Service waterfowl production areas.
Biological Resource -- White-tailed Deer (Odocoileus virginianus) Predation on Grassland Songbird Nestlings reports videotaped observations of white-tailed deer depredating four songbird nests in grassland habitats in southeastern and northcentral North Dakota, 1996-1999.
Biological Resource -- Leadership in Wolf, Canis lupus, Packs examines leadership in Wolf packs based on published observations and data gathered studying a free-ranging pack of Wolves on Ellesmere Island during summers from 1986 to 1998.
Biological Resource -- Waterfowl Research Priorities in the Northern Great Plains summarizes results of an effort to identify research priorities so that future research will be directed toward the most pertinent issues in waterfowl ecology and management.
Biological Resource -- Details of Extensive Movements by Minnesota Wolves (Canis lupus) discusses the use of VHF, GPS, and satellite-monitored radiocollars to study details of long distance movements by four Minnesota wolves.
Biological Resource -- Variability in Nest Survival Rates and Implications to Nesting Studies examines four samples of Mallard (Anas platyrhynchos) and Blue-winged Teal (A. discors) nests found along an interstate highway right-of-way in southcentral North Dakota to evaluate potential biases in hatch-rate estimates.
Biological Resource -- Sparrows of North Dakota is a guide to the 19 species of native sparrows that utilize grasslands and other important habitats in North Dakota.
Update -- Numerous changes have been made to Butterflies of North America. Among these are a major update to county distribution records for Kentucky, the inclusion of numerous species distribution records for western states and northern Mexico, and the addition of many species photographs and a state butterfly checklist for Alaska.
Update -- Moths of North America also has undergone a major update. Species distribution records for two additional families, the Arctiidae and Doidae, are now included. In addition, numerous species distribution records have been added to other families, especially the Notodontidae and Noctuidae. Numerous species photographs also have been added.
Update -- Several new and updated checklists for Alaska, Arizona, California, Colorado, Maryland, Montana, Oregon, South Dakota, Texas, Utah, Washington, and Wyoming have been added to Bird Checklists of the United States.
Update -- Insects and Related Arthropods of North America has been updated to include new butterfly checklists for National Parks in Arizona, California, and Florida, as well as a species list for the Great Smoky Mt. Moth and Butterfly "Bioblitz".
Announcements -- A link to information on the "11th Annual National Gap Analysis Program Meeting Call for Papers and Posters" to be held in Brookings, SD, June 17-20 has been added to the Announcements page.
Web Site Recognition:
|The building plan for a Purple Martin House, found in the biological resource Building Nest Structures, Feeders, and Photo Blinds for North Dakota Wildlife, has been selected as a featured site in Lightspan's StudyWeb® as one of the best educational resources on the Web.|
Biological Resource -- Evaluation of the Bird Conservation Area Concept in the Northern Tallgrass Prairie Region: Annual Report 2000 contains findings from the third year of a study to test the concept that Bird Conservation Areas can maintain populations of breeding grassland birds.
Biological Resource -- Floristic Quality Assessment for Plant Communities of North Dakota, South Dakota (excluding the Black Hills), and Adjacent Grasslands provides coefficients of conservatism for use in assessing floristic quality in the Dakotas and adjacent grasslands.
Biological Resource -- Using Known Populations of Pronghorn to Evaluate Sampling Plans and Estimators evaluates widely used sampling plans and estimators of population size on 3 known clustered distributions of pronghorn (Antilocarpa americana).
Update -- Insects and Related Arthropods of North America has been updated to include links to checklists for National Parks in Ohio, Pennsylvania, South Carolina, and Washington, D.C.
Web Site Recognitions:
The biological resource Fishes of North Dakota has been selected as a featured site in Lightspan's StudyWeb® as one of the best educational resources on the Web.
Bird Checklists of the United States has been listed No. 6. in the Top 25 Birding Web Sites receiving the coveted "Siskin and Egret's '4 Wings Up' Award" by Birding.com
Biological Resource -- The question of whether brood parasitism by Brown-headed Cowbirds, which are abundant in the Great Plains, has contributed to significant population declines of grassland passerines in recent decades is considered in Cowbird Parasitism in Grassland and Cropland in the Northern Great Plains.
Biological Resource -- Nesting intervals in five species of temperate-nesting dabbling ducks (Mallard, Northern Pintail, Northern Shoveler, Blue-winged Teal, Gadwall) are compared, and differences in timing of refractoriness are assessed in Temporal Flexibility of Reproduction in Temperate-breeding Dabbling Ducks.
Biological Resource -- Statistical Considerations in Monitoring Birds over Large Areas is a personal view on the topic of monitoring birds over a large area, such as a national park, forest, or wildlife refuge.
Announcements -- A summary of the 2000 Jamestown Christmas Bird Count, has been added to the Announcements page.
Biological Resource -- Avifauna of an Early Successional Habitat Along the Middle Missouri River examines the abundance and species composition of the bird community of an early successional habitat along the Missouri River in southeastern South Dakota during the breeding season.
Biological Resource -- Evidence for Edge Effects on the Multiple Levels in Tallgrass Prairie examines how edges affect nest survival and predator distribution in a native tallgrass prairie system in southwest Missouri using artificial nests, natural nests, and mammal track stations.
Biological Resource -- A Provisional Model for Smooth Brome Management in Degraded Tallgrass Prairie presents a provisional model for managers who choose to control smooth brome through the use of prescribed burns.
Update -- Many entries have been added to the Wetland Restoration Bibliography. This searchable resource now contains 2,173 citations.
Update -- Insects and Related Arthropods of North America has been updated to include checklists for Coleoptera in North Carolina, Moths in New Jersey, Butterflies in Colorado and New Jersey, and Dragonflies in California.
Update -- Dragonflies and Damselflies (Odonata) of the United States, Mayflies of the United States, and Stoneflies of the United States have been updated to reflect the addition of new county records.
Biological Resource -- Relationships of Habitat Patch Size to Predator Community and Survival of Duck Nests examines duck nest success and predator community composition in relation to size of discrete patches of nesting cover in the Prairie Pothole Region of the United States in 1993-95.
Biological Resource -- Management of Northern Prairies and Wetlands for the Conservation of Neotropical Migratory Birds discusses the status of bird populations in the northern prairies, key upland and wetland habitats, effects of common management practices, and issues that specifically result from a landscape perspective.
Biological Resource -- Key to the Skulls of North Dakota Mammalsintended for students, amateur naturalists, and professionalsprovides an easy-to-use key for identifying the skulls of North Dakota mammals.
Biological Resource -- The Grays Lake Ecosystem, a large (22,000 ac) shallow montane marsh located in southeast Idaho, provides important habitat for breeding sandhill cranes, trumpeter swans, Franklin's gulls, white-faced ibis, dabbling and diving ducks, and a variety of shore- and grassland birds. A large portion of the wetland habitat is protected with Grays Lake National Wildlife Refuge. Grays Lake has been the focus of numerous research studies, past and present. This web site presents information on current and previous research and information on various aspects of the area so researchers, birders, and others interested in the region can better understand the area's values and functions.
Biological Resource -- Differential Effects of Coyotes and Red Foxes on Duck Nest Success examines the hypothesis that nest success of upland-nesting ducks is higher in areas with coyotes than in areas with red foxes.
Biological Resource -- Description and Identification of American Black Duck, Mallard, and Hybrid Wing Plumage provides a key to identify wings of hybrids between American Black Ducks (Anas rubripes) and Mallards (A. platychynchos).
Biological Resource -- Statistical Comparison of Nest Success Rates describes a method for comparing nest success rates among two or more categories of nests.
Update -- Many entries have been added to Evaluation of Restored Wetlands in the Prairie Pothole Region. This searchable resource now contains 2,215 citations.
Biological Resource -- Statistical Sirens: The Allure of Nonparametrics points out some often-ignored features of nonparametric tests comparing two means, and advocates parameter estimation as a preferred alternative to hypothesis testing in many situations.
Biological Resource -- Point Counts of Birds: What Are We Estimating? provides a simple mathematical conceptualization of point counts and illustrates graphically some of the influences on them.
Biological Resource -- Spring-staging Ecology of Midcontient Greater White-fronted Geese provides information on habitat use, food habitats, and nutrient dynamics of greater white-fronted geese staging in Nebraska's Rainwater Basin Area, and considers the effect of changes in agriculture on food availability and habitat needs in spring 1979-1980.
Biological Resource -- Wolf Pack Size and Food Acquisition provides a synthesis and analysis of information on the relation between amount of food acquired per wolf and wolf pack size for wolves preying on various sized prey.
Biological Resource -- 'Cross the Wide Missouri: Significant Missouri River System Biological Sites features nine sites of special biological significance within North Dakota that possess unique and regionally/nationally important species and associated habitat.
Biological Resource -- A Ten-year History of the Demography and Productivity of an Arctic Wolf Pack describes observations of a pack of two to eight adult wolves and their pups during ten summers (1986-1995) on Ellesmere Island, Northwest Territories.
Biological Resource -- Duck Nest Success in the Prairie Pothole Region provides nest success estimates for 5 species of ducks for 5 regions and 8 habitat classes in North Dakota, South Dakota, and Minnesota between 1966 and 1984.
Biological Resource -- Declining Scaup Populations: Issues, Hypotheses, and Research Needs summarizes issues of concern, hypotheses for factors contributing to the population decline, and research and management needs recommended by participants in the Scaup Workshop, held in September 1999 at Northern Prairie Wildlife Research Center.
Update -- Updates have been made to several checklists for California, Colorado, Florida, Hawaii, Indiana, Iowa, Kansas, Kentucky, Maine, Maryland, Massachusetts, Mississippi, Nebraska, New Jersey, Oklahoma, Tennessee, Texas, Virginia, Washington, and Wyoming in Bird Checklists of the United States.
Update -- New entries have been added to the Bibliography for Swift Foxes (Vulpes velox). This searchable resource now contains 359 citations pertinent to Swift Foxes.
Biological Resource -- Bufflehead Brood In Northeastern South Dakota reports an observation of a bufflehead (Bucephala albeola) brood, representing the third South Dakota confirmed breeding record.
Biological Resource -- Mallard Brood Survival in Prairie Pothole Landscapes considers key factors influencing mallard brood survival and provides a model for predicting brood survival rates.
Biological Resource -- Summer Movements and Behavior of an Arctic Wolf, Canis Lupus, Pack without Pups describes observations of the nomadic summer movements and pack behavior of pupless wolves studied on Ellesmere Island during July 1993.
Biological Resource -- Waterfowl and Habitat Changes After 40 Years on the Waubay Study Area assesses changes in waterfowl populations, wetland characteristics, land use, and landowner demographics 40 years after the first comprehensive Waubay study was conducted from 1950 to 1953 in Day County, South Dakota.
Biological Resource -- Avian Inventory of Tallgrass Prairie National Preserve, Kansas, 1998-1999 includes the results of an initial baseline inventory of grassland and other species of birds at Tallgrass Prairie National Preserve (TAPR) located in the Flint Hills of Chase County, Kansas.
Update -- Butterflies of North America has been updated to reflect many new county records for the state of Iowa.