Waterfowl Pair Use of Natural and Man-Made Wetlands in South Dakota

Ruwaldt, James J.; Flake, Lester D.; Gates, John M.

doi:10.2307/3800346

Cited by 19 publications

(14 citation statements)

References 6 publications

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“…Svingen (1991) found similar results on stock ponds in north-central Wyoming. Density of breeding ducks (pairs/hectare) on beaver ponds on the Laramie Range was low compared to other wetlands in the north-central United States where densities ranged from 1.3 to 7,7 pairs per surface hectare (Smith 1953, Stoudt 1969, Lokemoen 1973, Ruwaldt et al 1979, Svingen 1991.…”

Section: Discussionmentioning

confidence: 99%

Beaver ponds create wetland habitat for birds in mountains of southeastern Wyoming

1996

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We studied the use of beaver ponds and associated wetlands by ducks and waterbirds on the Laramie Range, Albany County, Wyoming, during 1994. Our goal was to identify physical habitat features of beaver ponds associated with use by migrating, breeding, and postbreeding ducks and other birds associated with aquatic habitats. Species richness of birds observed at beaver ponds was positively correlated with water surface area, area of shallow water, length of woody shoreline, and shoreline development (the ratio of shoreline length to the circumference of a circle of the same area as the water surface of the pond). Duck use (green-winged teal, mallard, and ring-necked duck) was positively correlated with water surface area, area of shallow water, and length of woody shoreline, but negatively correlated with the ratio of the area of submergent vegetation to water surface area. Use by riparian birds (red-winged blackbird and Brewer's blackbird) was positively correlated with water surface area, area of shallow water, area of emergent cover, and length of woody shoreline.

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Section: Discussionmentioning

confidence: 99%

Beaver ponds create wetland habitat for birds in mountains of southeastern Wyoming

1996

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“…While the reasons for this apparent range expansion are unclear, we hypothesize that the creation of numerous wetland habitats suitable for colonization by salamanders across what were historically unfragmented grasslands inhospitable to salamanders may have allowed these two subspecies to intermix. In addition to the numerous wetlands altered and created in North Dakota, over 70,000 retention and pit-retention reservoirs have been created in western South Dakota (Ruwaldt et al, 1979) that may have provided a suitable habitat corridor from Nebraska. In addition, transportation of barred tiger salamanders as bait for sport fishermen may have greatly increased the dispersal rate of this subspecies.…”

Section: Discussionmentioning

confidence: 99%

Impacts of water development on aquatic macroinvertebrates, amphibians, and plants in wetlands of a semi-arid landscape

Euliss

Mushet

2004

Aquatic Ecosystem Health &Amp; Management

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We compared the macroinvertebrate and amphibian communities of 12 excavated and 12 natural wetlands in western North Dakota, USA, to assess the effects of artificially lengthened hydroperiods on the biotic communities of wetlands in this semi-arid region. Excavated wetlands were much deeper and captured greater volumes of water than natural wetlands. Most excavated wetlands maintained water throughout the study period (May to October 1999), whereas most of the natural wetlands were dry by June. Excavated wetlands were largely unvegetated or contained submergent and deep-marsh plant species. The natural wetlands had two well-defined vegetative zones populated by plant species typical of wet meadows and shallow marshes. Excavated wetlands had a richer aquatic macroinvertebrate community that included several predatory taxa not found in natural wetlands. Taxa adapted to the short hydroperiods of seasonal wetlands were largely absent from excavated wetlands. The amphibian community of natural and excavated wetlands included the boreal chorus frog (Pseudacris maculata), northern leopard frog (Rana pipiens), plains spadefoot (Scaphiopus bombifrons), Woodhouse's toad (Bufo woodhousii woodhousii), and tiger salamander (Ambystoma tigrinum). The plains spadefoot occurred only in natural wetlands while tiger salamanders occurred in all 12 excavated wetlands and only one natural wetland. Boreal chorus frogs and northern leopard frogs were present in both wetland types; however, they successfully reproduced only in wetlands lacking tiger salamanders. Artificially extending the hydroperiod of wetlands by excavation has greatly influenced the composition of native biotic communities adapted to the naturally short hydroperiods of wetlands in this semi-arid region. The compositional change of the biotic communities can be related to hydrological changes and biotic interactions, especially predation related to excavation.

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“…A number of square quadrat sampling techniques have been employed to estimate the abundance of ponded wetlands. Ruwaldt et al (1979) kota from clusters of 0.64 km 2 quadrats. Wetland drainage rates have been assessed by the U.S.…”

Section: Introductionmentioning

confidence: 99%

“…Waterfowl and wetlands are commonly enumerated in the same surveys (Brewster et al 1976, Ruwaldt et al 1979, Sugden and Butler 1980, Cowardin et al 1985, 1995, USFWS and CWS 1987. These data may be used to estimate waterfowl density Grier 1988, Cowardin et al 1995) or to predict recruitment and population trends (Hammack and Brown 1974, Martin et al 1979, Cowardin et al 1983, 1995.…”

Section: Introductionmentioning

confidence: 99%

Bias in quadrat-derived estimates of number of prairie wetlands

Johnson

Higgins

1998

Wetlands

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Estimates of number of wetlands derived from quadrat sampling are inherently biased when wetlands on quadrat boundaries are counted. Bias complicates comparisons of wetland density or abundance between years or studies, or between regions with different wetland sizes. Simulated quadrat sampling was conducted to evaluate the magnitude of bias in estimates of the number of temporary, seasonal, semipermanent, and total wetlands from samples of square quadrats of different sizes. All estimates were biased except for number of temporary wetlands derived from samples of the largest quadrats. Bias ranged from +101% (SE = 0.39%) for estimates of the number of semipermanent wetlands sampled with 0.64 km 2 quadrats to +0.19% (SE = 0.19%) for the number of temporary wetlands sampled with 25.60 km 2 quadrats. Bias was greatest when large wetlands were sampled using small quadrats and was related to quadrat perimeter : area ratio (kin/kin 2) and to quach-at size. Managers and researchers should correct for bias in estimates of number of wetlands by deriving correction factors with the equations presented or by deriving correction factors using aerial photographs to determine the geometric centers of wetlands in and around a subset of sample quadrats.

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Waterfowl Pair Use of Natural and Man-Made Wetlands in South Dakota

Cited by 19 publications

References 6 publications

Beaver ponds create wetland habitat for birds in mountains of southeastern Wyoming

Beaver ponds create wetland habitat for birds in mountains of southeastern Wyoming

Impacts of water development on aquatic macroinvertebrates, amphibians, and plants in wetlands of a semi-arid landscape

Bias in quadrat-derived estimates of number of prairie wetlands

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