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Ecological Studies at the Woodworth Study Area

Impact of Agricultural Land-Use on Prairie Wetland Ecosystems: Experimental Design and Overview

Table 1

Table 1. Physical characteristics of study wetlands on U.S. Fish and Wildlife Service Waterfowl Production Areas (WPA's), Stutsman County, North Dakota, selected for the sedimentation study, 1993-1994.



                                                                    1993^b    1994^c
                                                                    avg      avg
                                    Wetland   Shore-     %^a         water    water                       Historic^e
Land-use        Wetland	             area     length     wetland    level    level   Upland^d             land-use
treatment       number     WPA       (ha)     (m)        class      (cm)     (cm)    soils            TI SF CR BU HA GR   Outlet^f  Inlet^g
Native prairie  0232    Woodworth    0.20     159        100        32.2     112.5   Barnes-Buse               x     x
                0717    Woodworth    0.17     203        100        49.4     107.8   Barnes-Buse               x  x  x
                0718    Woodworth    0.16     203        100        41.2     100.6   Barnes-Buse               x  x  x
                1615    Woodworth    0.24     244         88        37.7      99.0   Barnes-Buse               x     x
                2224    Woodworth    0.14     197         88        54.2      90.4   Barnes-Buse               x           x

CRP             0724    Woodworth    0.11     149         75        41.0      40.4   Barnes-Buse      x     x  x  x  x     x        x
                13E1    Strong       0.20     224         NA        24.5      77.2   Barnes-Buse      x  x  x     x  x     x
                13E2    Strong       0.13     214         NA         9.0      48.2   Barnes-Buse      x  x  x     x  x     x
                14A1    Sunday Lake  0.12      93         NA        12.0      40.0   Barnes-Svea-Buse x	 x  x     x  x	
                2401    Barnes Lake  0.10     150         NA        26.1      23.6   Barnes-Svea-Buse x  x  x     x  x

Bufferstrip     0118    Woodworth    0.25     264         88        42.2      66.7   Barnes-Buse      x  x  x              x
                0228    Woodworth    0.14     187        100        15.9      63.9   Barnes-Buse      x  x  x        x
                0229    Woodworth    0.13     199         86        18.7      47.1   Barnes-Buse      x  x  x        x
                0230    Woodworth    0.21     226        100        27.6      92.0   Barnes-Buse      x  x  x        x
                0732    Woodworth    0.09     180         88        31.2      68.9   Barnes-Buse      x     x  x  x  x     x

Summer fallow   0317    Woodworth    0.16     209        100        54.0      57.7   Barnes-Svea-Buse x  x  x  x  x  x	   x        x 
                0612    Woodworth    0.19     219         88        47.2      90.7   Barnes-Buse      x  x  x  x  x        x
                0615    Woodworth    0.13     194        100        54.1      94.2   Barnes-Buse      x  x  x  x  x                 x
                0623    Woodworth    0.47     365        100        71.0      130.2  Barnes-Buse      x  x  x  x  x
                0706    Woodworth    0.23     274        100        44.5      105.2  Barnes-Buse      x  x  x  x  x

^a% of time wetland was classified as seasonal 1970-1988 (n=8), NA=data not available.
^bAverage water depth May-July 1993 (n=22-35).
^cAverage water depth April-August 1994 (n=38).
^dSoil series (Stutsman County Soil Survey, North Dakota)
^eHistorical land-use practices: tilled (TI), summer fallow (SF), cropland (CR), burning (BU), haying (HA), grazing (GR).
^fPresence of an overland water outlet during high water levels 1993-1994.
^gPresence of an overland water inlet during high water levels 1993-1994.

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