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There was a general increase in R:Pg from growing season to winter–spring (Table 5), and 55–100% of Pg recharged during the latter. Growing season R and R:Pg at OPEN and MH sites generally exceeded RP values. MH R:Pg ratios were greater relative to OPEN sites, reflecting coarser soil textures at the former (Figure 5). There were no clear distinctions between fall or winter–spring R and R:Pg at OPEN-MH relative to RP sites. Sites with marked increases in St in fall (OPEN1, OPEN2, MH3, YP2 and YP3, Figure 6) converted less Pg to R relative to sites with little storage change. Conversely, sites with the smallest fall R:Pg values had larger winter–spring R;Pg values, consistent with rapid declines in St following snowmelt (Figure 6).

Table 5

Seasonal recharge (R) below 1 m depth and R relative to above-canopy precipitation (Pg) (± estimated error)

SiteGrowing season R (mm)Growing season R:PgFall R (mm)Fall R:PgWinter–spring R (mm)Winter–spring R:Pg
OPEN1a 221 ± 62 0.30 ± 0.08 124 ± 26 0.60 ± 0.13 289 ± 29 1.01 ± 0.10 
OPEN2a 180 ± 62 0.26 ± 0.09 120 ± 31 0.56 ± 0.14 295 ± 35 1.04 ± 0.12 
MH1 249 ± 83 0.35 ± 0.12 160 ± 35 0.74 ± 0.16 217 ± 38 0.76 ± 0.13 
MH2 227 ± 71 0.32 ± 0.10 196 ± 28 0.91 ± 0.13 207 ± 32 0.73 ± 0.11 
MH3a 376 ± 78 0.47 ± 0.10 125 ± 35 0.52 ± 0.15 292 ± 38 0.98 ± 0.13 
YP1 89 ± 89 0.12 ± 0.12 173 ± 40 0.84 ± 0.19 224 ± 44 0.78 ± 0.15 
YP2a 145 ± 84 0.19 ± 0.11 94 ± 38 0.45 ± 0.19 241 ± 42 0.84 ± 0.15 
YP3a 178 ± 81 0.24 ± 0.11 62 ± 41 0.30 ± 0.20 285 ± 27 0.99 ± 0.10 
OP1 143 ± 72 0.21 ± 0.11 178 ± 29 0.76 ± 0.13 159 ± 33 0.55 ± 0.12 
OP3 186 ± 79 0.23 ± 0.10 138 ± 33 0.57 ± 0.14 241 ± 37 0.81 ± 0.12 
SiteGrowing season R (mm)Growing season R:PgFall R (mm)Fall R:PgWinter–spring R (mm)Winter–spring R:Pg
OPEN1a 221 ± 62 0.30 ± 0.08 124 ± 26 0.60 ± 0.13 289 ± 29 1.01 ± 0.10 
OPEN2a 180 ± 62 0.26 ± 0.09 120 ± 31 0.56 ± 0.14 295 ± 35 1.04 ± 0.12 
MH1 249 ± 83 0.35 ± 0.12 160 ± 35 0.74 ± 0.16 217 ± 38 0.76 ± 0.13 
MH2 227 ± 71 0.32 ± 0.10 196 ± 28 0.91 ± 0.13 207 ± 32 0.73 ± 0.11 
MH3a 376 ± 78 0.47 ± 0.10 125 ± 35 0.52 ± 0.15 292 ± 38 0.98 ± 0.13 
YP1 89 ± 89 0.12 ± 0.12 173 ± 40 0.84 ± 0.19 224 ± 44 0.78 ± 0.15 
YP2a 145 ± 84 0.19 ± 0.11 94 ± 38 0.45 ± 0.19 241 ± 42 0.84 ± 0.15 
YP3a 178 ± 81 0.24 ± 0.11 62 ± 41 0.30 ± 0.20 285 ± 27 0.99 ± 0.10 
OP1 143 ± 72 0.21 ± 0.11 178 ± 29 0.76 ± 0.13 159 ± 33 0.55 ± 0.12 
OP3 186 ± 79 0.23 ± 0.10 138 ± 33 0.57 ± 0.14 241 ± 37 0.81 ± 0.12 

Growing season R is for June 23–October 1, 2009 and May 5–July 12, 2010, fall R is for October 2–December 4, 2009, winter–spring R is for December 5, 2009–May 4, 2010.

aSites exhibiting relatively large variability in soil water storage (Figure 6).

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