NDLI: Differences in distribution of modified basins and ducks relative to roadside transects

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Wetlands : Volume 37

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Wetlands : Volume 23, Issue 4, December 2003

Wetlands : Volume 23, Issue 3, September 2003

Wetlands : Volume 23, Issue 2, June 2003

Wetlands : Volume 23, Issue 1, March 2003

Plant diversity, composition, and invasion of restored and natural prairie pothole wetlands: Implications for restoration

Temporal connectivity in a prairie pothole complex

Effects of sediment load on emergence of aquatic invertebrates and plants from wetland soil egg and seed banks

Community metabolism during early development of a restored wetland

Historical wetlands in Oregon’s Willamette valley: Implications for restoration of winter waterbird habitat

Characterization of wetland mitigation projects in Tennessee, USA

Evaluating vernal pools as a basis for conservation strategies: A maine case study

Inventory and characterization of wetland habitat on the Winnebago upper pool lakes, Wisconsin, USA: An integrated multimedia-gis approach

Response of sediment chemistry and accumulation rates to recent environmental changes in the Clear Lake watershed, California, USA

Weak correspondence between macroinvertebrate assemblages and land use in Prairie Pothole Region wetlands, USA

Seed germination and propagation of Xyris tennesseensis, a federal endangered wetland species

Effects of flow pattern on riparian seedling recruitment on sandbars in the Wisconsin River, Wisconsin, USA

Differences in distribution of modified basins and ducks relative to roadside transects

Association between aquatic vegetation and landscape indicators of human pressure

Status of a seagrass ecosystem: An ecologically sensitive wetland habitat from India

The hydrologic catchment area of a chain of karst wetlands in central Pennsylvania, USA

Flood flows, leaf breakdown, and plant-available nitrogen on a dryland river floodplain

The role of a floodplain in regulating aquifer recharge during a flood event of the River Adour in southwest France

Sediment and water phosphorus characteristics in a pond of spring origin, Sakaryabaşi springs basin, Turkey

Differences in distribution of modified basins and ducks relative to roadside transects

Content Provider	Springer Nature Link
Author	Austin, Jane E. Guntenspergen, Glenn R. Sklebar, H. Thomas Buhl, T. K.
Copyright Year	2003
Abstract	Wetland basins in the Prairie Pothole Region of the U.S. are commonly modified by excavation (e.g., roadside ditches, stock dugouts), partial drainage (ditching), and diking. Differences in the distribution of modified wetlands may affect the predictive accuracy of waterfowl survey data if such wetlands are not distributed randomly in the landscape and if waterfowl are not distributed equally among them. We used data collected on thirty-eight 40-km$^{2}$ plots in North Dakota to examine the distribution of modified basins relative to roadside transects and their use by five species of dabbling ducks in 1995. The 800-m-wide transects were subdivided into an inner 400-m transect, centered on the road, and the remaining outer transect area. We compared the distribution of modified and natural wetland basins among three sample areas: 1) the inner 400-m-wide roadside transect area, 2) the outer transect area, and 3) the remaining area within the 40-km$^{2}$ plot that was outside of the transects (outer plot). Duck use was compared between the two transect areas. The plots contained 20,582 basins, of which 88.5% were unmodified, 7.5% were excavated, 3.7% were partially drained, and 0.2% were diked. Nearly all excavated temporary (89%) and seasonal (90%) basins occurred in the inner transect area, reflecting the high proportion of basins that would be defined as roadside ditches. Excavated semipermanent basins were more evenly distributed among the outer plot and two transect widths; these basins often were dugouts but also included roadside ditches. Partially drained and diked basins also were fairly evenly distributed among the three sample areas. Semipermanent basins had greater use by mallards (Anas platyrhynchos) and northern pintails (A. acuta) when they were partially drained than when they were excavated or unmodified; pintails also had greater use of partially drained seasonal basins. Use of wetland basins by gadwall (A. strepera), blue-winged teal (A. discors), and northern shovelers (A. clypeata) did not differ among water regimes or modification. We found no evidence to indicate that duck numbers determined from standard 400-m-wide roadside transects were biased relative to the larger landscape. However, pond counts derived from such transects were biased. Correlations of duck numbers to pond counts that exclude ditches or temporary basins would poorly reflect the response of ducks to available water.
Starting Page	140
Ending Page	148
Page Count	9
File Format	PDF
ISSN	02775212
Journal	Wetlands
Volume Number	23
Issue Number	1
e-ISSN	19436246
Language	English
Publisher	Springer Netherlands
Publisher Date	2003-01-01
Publisher Institution	Society of Wetland Scientists
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Anas acuta Anas clypeata Anas discors Anas platyrhynchos Anas strepera blue-winged teal gadwall mallard modified wetlands North Dakota northern shoveler pintail Prairie Pothole region survey methodology Freshwater & Marine Ecology Environmental Management Ecology Hydrogeology Coastal Sciences Landscape Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Environmental Chemistry

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Differences in distribution of modified basins and ducks relative to roadside transects

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