Table S2.

Point estimates (95% CIs) for the multiplicative relationship of the treatment (10–20% prairie) versus the control (0% prairie) for the agronomic, biological, and hydrological data collected between 2008 and 2015 in the STRIPS experiment at Neal Smith National Wildlife Refuge

ResponsePrairie/no prairie20%/10% prairiePrairie strip on footslope
Agronomic
 Corn cropland yield0.89 (0.74,1.06)1.22 (1.04,1.42)1.11 (0.93,1.33)
 Corn catchment yield0.77 (0.64,0.91)1.08 (0.93,1.26)1.11 (0.93,1.33)
 Soybean cropland yield0.94 (0.83,1.07)1.09 (0.98,1.22)1.03 (0.91,1.17)
 Soybean catchment yield0.82 (0.72,0.92)0.97 (0.87,1.08)1.03 (0.91,1.17)
 Weed cover1.97 (0.49,7.89)0.88 (0.26,2.99)1.23 (0.30,4.98)
Biological
 All plant cover6.05 (2.23,16.42)1.59 (0.66,3.86)0.92 (0.34,2.51)
 All plant diversity*2.44 (1.56,3.79)1.07 (0.72,1.58)0.93 (0.59,1.45)
 All plant species richness4.96 (2.45,10.03)1.05 (0.57,1.97)0.94 (0.46,1.90)
 Perennial plant cover12.49 (6.78,23.02)1.60 (0.93,2.75)1.05 (0.57,1.95)
 Perennial plant diversity*2.77 (1.71,4.49)1.10 (0.72,1.69)0.86 (0.53,1.39)
 Perennial plant species richness7.34 (3.13,17.22)1.07 (0.50,2.27)0.90 (0.38,2.12)
 Native plant cover4.50 (1.63,12.44)1.81 (0.74,4.42)0.87 (0.32,2.41)
 Native plant diversity*3.60 (1.89,6.84)0.91 (0.52,1.60)0.92 (0.48,1.75)
 Native plant species richness5.34 (3.41,8.37)1.06 (0.71,1.57)0.94 (0.60,1.47)
 Native perennial plant cover13.07 (5.09,33.54)1.93 (0.86,4.32)0.90 (0.36,2.26)
 Native perennial plant diversity*4.14 (3.01,5.70)0.85 (0.65,1.11)0.84 (0.62,1.14)
 Native perennial plant species richness7.76 (3.80,15.85)1.06 (0.57,1.97)0.86 (0.42,1.75)
 Insect abundance1.55 (0.75,3.18)1.63 (0.89,2.96)1.22 (0.61,2.43)
 Insect diversity*1.14 (0.79,1.65)1.15 (0.85,1.56)0.95 (0.67,1.35)
 Insect species richness2.61 (1.47,4.62)1.08 (0.67,1.74)1.11 (0.64,1.92)
 Natural enemy insect abundance1.46 (0.79,2.72)1.51 (0.90,2.53)1.21 (0.67,2.18)
 Natural enemy insect diversity*1.06 (0.80,1.40)1.11 (0.88,1.40)0.93 (0.71,1.21)
 Natural enemy insect species richness2.20 (1.38,3.50)1.08 (0.73,1.60)1.08 (0.69,1.69)
 Pollinator insect abundance3.47 (1.35,8.96)1.68 (0.76,3.70)1.85 (0.74,4.58)
 Pollinator insect diversity*1.89 (1.34,2.66)1.01 (0.76,1.34)1.07 (0.77,1.48)
 Pollinator insect species richness2.44 (1.55,3.83)1.10 (0.76,1.60)1.23 (0.80,1.90)
 Bird abundance2.63 (1.88,3.67)1.12 (0.83,1.50)1.22 (0.87,1.71)
 Bird diversity*1.94 (1.68,2.25)1.04 (0.91,1.18)1.11 (0.96,1.29)
 Bird species richness2.08 (1.76,2.45)1.06 (0.92,1.23)1.12 (0.95,1.32)
 Bird SGCN abundance2.06 (1.49,2.84)1.14 (0.86,1.51)1.28 (0.93,1.77)
 Bird SGCN diversity*1.71 (1.47,1.98)1.08 (0.95,1.23)1.12 (0.97,1.30)
 Bird SGCN species richness1.75 (1.49,2.06)1.09 (0.94,1.26)1.14 (0.96,1.34)
 Grassland bird abundance1.13 (0.79,1.63)1.49 (1.08,2.06)1.12 (0.77,1.61)
 Grassland bird diversity*1.11 (0.88,1.39)1.30 (1.06,1.58)1.05 (0.83,1.32)
 Grassland bird species richness1.11 (0.88,1.40)1.31 (1.06,1.61)1.05 (0.83,1.33)
Hydrological
 Ground water nitrate-nitrogen0.28 (0.08,1.00)0.37 (0.12,1.14)1.61 (0.45,5.77)
 Ground water orthophosphate0.98 (0.47,2.06)0.55 (0.29,1.06)0.25 (0.12,0.53)
 Surface runoff0.63 (0.43,0.93)1.04 (0.74,1.45)1.01 (0.69,1.48)
 Surface runoff sediment0.05 (0.02,0.18)1.04 (0.35,3.13)0.91 (0.26,3.18)
 Surface runoff nitrogen0.30 (0.08,1.05)0.49 (0.16,1.50)1.05 (0.30,3.72)
 Surface runoff nitrate-nitrogen0.62 (0.10,3.64)0.36 (0.07,1.73)0.94 (0.16,5.56)
 Surface runoff phosphorous0.23 (0.07,0.74)0.40 (0.14,1.16)0.81 (0.25,2.65)
 Surface runoff DOC load0.67 (0.20,2.25)1.04 (0.35,3.04)2.02 (0.61,6.71)
 Surface runoff DOC concentration1.12 (0.89,1.40)0.77 (0.63,0.94)0.95 (0.75,1.19)
  • Contrasts significant at the P ≤ 0.05 are shown in bold. The hydrological category includes components that move with water.

  • * Diversity was calculated as inverse Simpson’s diversity index (76).