Ecological Archives A021-139-A1

C. M. Riseng, M. J. Wiley, R. W. Black, and M. D. Munn. 2011. Impacts of agricultural land use on biological integrity: a causal analysis. Ecological Applications 21:3128–3146.

Appendix A (TABLE A1). Study unit features: summary of dominant study unit features. Mean values an ranges are shown for annual precipitation, air temperatures, and study site basin area. Total agriculture includes croplands and pasture/rangeland.

Study
Area
Features
CCYK UNSK CNBR OZRK UMIS WHMI GCP DLMV
Major
River
Basins
Central
Columbia and
Yakima Rivers,
Washington
Upper
Snake
River,
Idaho
Platte, Loup,
and Elkhorn
Rivers,
Nebraska
Neosho-
Illinois and
White Rivers,
Missouri
Minnesota
River,
Minnesota /
Iowa
White and
Miami Rivers,
Indiana/Ohio
Flint and
Chattahoochee
Rivers,
Georgia
Chester, Choptank,
Nanticoke, and
Pocomoke Rivers,
Maryland/Delaware
Region Western
Arid
Western
Arid
Midwest Midwest Midwest Midwest Coastal
Plain
Coastal
Plain
Climate Arid plains /
plateaus
Arid plains /
plateaus
Semi-humid
plains
Semi-humid
plains
Semi-humid
plains
Semi-humid
plains
Humid
plains
Humid
plains
*Annual
Precip.
(cm)
40
(22–91)
45
(22–75)
68
(59–78)
122
(116–130)
78
(69–88)
108
(98–116)
123
(118–132)
114
(114–116)
*Annual
Air Temp.
(°C)
8.4
(2–18)
6.7
(0–14)
9.5
(3–16)
13.7
(8–26)
5.9
(4–13)
10.6
(5–18)
18.4
(13–26)
13.4
(7–18)
Agricultural
Practices
Wheat, corn,
orchard,
alfalfa, dairy,
vegetables
Wheat,
alfalfa,
pasture,
potatoes
Corn,
soybeans,
alfalfa,
pasture
Poultry,
corn,
soybeans,
sorghum
Corn,
soybeans,
wheat, hog,
cattle
Corn,
soybeans
Corn, soybeans,
peanuts, poultry
vegetables,
pasture, cotton
Corn, alfalfa,
soybeans,
poultry,
pasture
Total
Agriculture
(%)
82.6 76.6 91.8 40.8 56.5 69.9 23.4 34.5
Urban /
Suburb
(%)
2.7 1.3 0.8 1.9 3.1 7.9 7.4 6.7
Forest
(%)
13.1 20 2.6 53.9 21.6 20.7 55 49.9
Wetland
(%)
1.8 2.1 4.8 3.5 18.9 1.5 14.3 9
Year
Sampled
2003 2007 2003 2006 2007 2004 2004 2004
No. Sites 29 29 26 30 29 29 29 25
*Study
Site Basin
Area (km²)
652
(3–6,379)
815
(1–5,225)
444
(50–1,759)
171
(50–484)
231
(31–634)
97
(37–340)
146
(55–300)
14
(4–41)

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