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Pelagic broadcast spawning cyprinids are common to Great Plains rivers and streams. This reproductive guild produces non-adhesive semi-buoyant eggs that require sufficient current velocity to remain in suspension during development. Although studies have shown that there may be a minimum velocity needed to keep the eggs in suspension, this velocity has not been estimated directly nor has the influence of physicochemical factors on egg buoyancy been determined. We developed a simple, inexpensive flow chamber that allowed for evaluation of minimum current velocity needed to keep semi-buoyant eggs in suspension at any time frame during egg development. The device described here has the capability of testing the minimum...
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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Natural history writings from explorers such as M. Lewis, W. Clark, J. J. Audubon, S. F. Baird, and E. Coues failed to mention the pileated woodpecker (Dryocopus pileatus ) in North Dakota throughout the 1800's. The first published reference to the species was in the early 1900's in the valley of the Red River of the North, part of the Agassiz Lake Plain of eastern North Dakota. Sightings increased in the Agassiz Lake Plain in the mid-1900's but remained rare west of the Agassiz Lake Plain until the late 1900's. Ornithologists suggest that the species has recently established small, permanent populations in the Turtle Mountains, Devils Lake area, and along the Sheyenne River, especially in the Sheyenne National...
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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Abstract has not been submitted
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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Abstract has not been submitted
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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Abstract has not been submitted
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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During 1982-1985, the effects of single spring and fall burn treatments on ground nesting birds and residual cover were studied on five paired areas of native mixed-grass prairie in northwestern Stutsman County, ND. Annually, visual obstruction readings to index the height-density of residual cover were taken once and nest searches were made four times on each area. Residual nesting cover on fall burn plots averaged taller and denser than on spring burn plots during post-fire growing years 2-4. A total of 259 duck nests and 63 nests of non-passerine birds were found during the four years. Duck nesting success was significantly greater (P < 0.05) in fall burn plots than in spring burn plots for all species and years...
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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Abstract has not been submitted
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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We examined fish populations and environmental characteristics of pool and riffle habitats of Little Beaver Creek, Montana, a small northern Great Plains stream. We collected 4,980 fishes representing 20 species in eight families. The most abundant and species-rich family was Cyprinidae. Nearly 88% (4,369) of all fishes were collected in pools. Pools also supported greater numbers ofspecies (x = 6.3, SO = 2.6, n = 58) than did riffles ( x = 2.2, SO = 1.9, n = 47). Most species showed distinct patterns of relative abundance along the stream gradient. Community changes were primarily reflected by the downstream addition of species; species replacement was of less importance. A multivariate analysis of fish relative...
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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Review of: Stokes field guide to birds. Donald Stokes and Lillian Stokes.
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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Review of: Range plant identification. United States Forest Service, Pacific Northwest Region. 1979. Washington, D.C.
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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Review of: Golden eagle country. Richard R. Olendorff. Knopf; 1st edition (1975). 202 p. ISBN: 0394482921.
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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We used aerial thermography to determine the location of sandhill crane (Grus canadensis) roosting sites during a single night over a 142-km reach of the Platte River, Nebraska. We assessed the influences of human disturbance features, screening of disturbance features by woody vegetation, distance to surrounding cropland of various types and channel width on distribution patterns of sandhill crane roosting sites with the aid of a geographic information system (GIS). We found that roosting sites were farther from bridges and paved roads than random points along the river channel; a visual woody screen mitigated the effect of bridges on locations of roosting sites; and roosting sites were in wider river channels...
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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This attractive, slim volume provides a wonderful introduction to a neglected aspect of prairie plant identification: seeds and seedlings. Williams, and the illustrator Brent Butler, take the mystery out of dichotomous keys with clear descriptions, vivid illustrations, and abundant photographs of characteristics that distinguish common, tallgrass prairie, seedlings. A botanical novice should have no problem using this book to identify seedlings in their prairie garden – presuming that they planted only those species included in the book (more on that later). Review info: The Tallgrass Prairie Center guide to seed and seedling identification in the Upper Midwest. By Dave Williams, 2010. ISBN: 978-1587299025, 132...
Categories: Publication; Types: Citation; Tags: Prairie Naturalist
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Abstract has not been submitted
Categories: Publication; Types: Citation; Tags: Prairie Naturalist