Environmental change network - Data summary 1994 to 2006

Observation 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
Total butterfly numbers 1527 1995 1510 1266 463 523 918 545 851 1142 1388 854 882
Number of butterfly species 22 25 26 23 18 23 20 17 19 19 22 18 24
Number bird species 29 26 22 35 29 23 19 23 26 29 23
Average number of bats 39 30 10 33 49 64 51 45 79 79 115
Average number Carabidae per trap 7 5 3 10 5 5 5 3.6 8.7 13.4 6.9 15.5 14.5
Number Carabidae species observed 10 8 8 9 10 11 12 10 13 18 12 10 11
Average number vegetation species recorded 21.3 15 16
Annual rainfall (mm) 675 514 653 916 860 1144 956 1018 724 797 549 905
Annual mean temp (^oC) 11 10 10.6 10.5 10.9 10.6 10.5 11.3 10.9 10.7 10.6 10.9
Soil Water potential (%v/v) 41.8 49.5 46.4 46.0 44.2 47.5 40 44.2 42.5 41.8
NO₂annual mean (ppb) 5.6 6.9 5.3 4.1 3.7 3.1 3.9 3.6 4.8 4.1 4.4 4.2
Annual mean NH₄ (denuder: μg/m³) 0.99 1.37 1.24 0.92 0.87 0.99 1.53 0.87 1.68
Annual mean NH₄ (alpha sampler: μg/m³) 0.56 0.63 0.67 0.63 0.61 0.58
O₃ 7 hour mean (Growing season: ppb) 30.1 29.8 29.9 32.7 30.8 31.1 30.2 34.3 32.1 42.0 * * *
AOT40 (ppb h) 3422 3243 2337 3318 2345 4695 3560 5207 2773 13420 * * *

* Data not yet available

Soil solution shallow

Observation 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
pH 4.2 4.5 4.2 4.1 4.2 4.2 4.3 4.6 4.5 4.6 4.3 4.2 4.3
Conductivity (μS/l) 92 86 87 120 146 78 92 81 88 102 112 151 109
Na (mg/l) 5.2 4.7 6 9.1 7.9 5.4 5.7 4.7 5.4 5.9 6.8 9.8 7.1
K (mg/l) 4.4 2.9 3.1 3.5 4.7 2.6 4.7 3.7 3.5 4.4 7.3 8.7 7.1
Ca (mg/l) 3.6 3.7 4.4 13.3 10.2 3.5 3.5 4.1 3.6 4.4 3.8 11 4.7
Mg (mg/l) 1.5 1.4 1.6 3.3 3.7 1.4 1.2 1.1 1.3 1.6 1.3 4 2
Fe (mg/l) 0.96 0.99 1.2 0.74 0.93 1.26 1.52 1.01 1.33 0.97 1.52 0.92 1.32
Al (mg/l) 0.66 0.70 0.88 0.79 1.03 1.01 1.17 0.77 0.92 0.75 1.25 1.25 1.44
PO₄-P (mg/l) 0 0 0 0.09 0.01 0.02 0 0 0 0 0 0 0
NO₃-N (mg/l) 1.4 0.6 0 1.6 8.9 0.1 0.4 1.8 0.4 2.7 0.8 8.2 0.8
NH₄-N (mg/l) 0.18 0.04 0.20 0.02 0.13 0 0.13 0.02 0.02 0.09 0.03 0.07 0.04
Cl (mg/l) 6.7 9.4 8.7 19.4 12.2 9.9 11.0 6.3 10.2 9.5 11.3 17.7 15
SO₄-S (mg/l) 3.7 3.1 5.5 7.2 4.2 3.4 2.9 2.2 2.6 2.9 3.8 5.5 3.9

Soil solution deep

Observation 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
pH 4.7 5.1 5 4.8 4.9 5.1 5.1 5.5 5.4 5.2 5.5 5.1 4.9
Conductivity (μS/l) 124 108 121 161 151 104 126 109 141 103 104 174 151
Na (mg/l) 14.2 11.5 12.2 14 13.5 10.2 10.7 9.6 11.7 10.5 10.5 15.8 14.2
K (mg/l) 0.45 0.5 0.53 0.57 0.47 1.03 0.35 0.24 0.3 0.56 0.27 0.6 0.67
Ca (mg/l) 8.9 7.3 8.4 10.6 10.5 6.8 7.1 5.3 7.1 6.3 6 11.4 9.2
Mg (mg/l) 4 3.1 3.6 4.5 4.4 3.1 2.9 2.2 3 2.6 2.5 4.9 4.1
Fe (mg/l) 0.09 0.09 0.13 0.06 0.08 0.26 0.16 0.14 0.47 0.13 0.11 0.18 0.13
Al (mg/l) 0.13 0.11 0.17 0.17 0.19 0.15 0.26 0.23 0.76 0.2 0.17 0.35 0.3
PO₄-P (mg/l) 0.02 0.02 0 0 0.03 0.06 0.01 0 0.1 0.01 0 0 0
NO₃-N (mg/l) 0 0.1 0.1 0 0.2 0 0.1 0 0 0.4 0.1 0.2 0.1
NH₄-N (mg/l) 0 0.1 0.05 0.1 0.03 0 0.02 0 0.01 0.3 0.01 0.03 0.01
Cl (mg/l) 22.7 18.5 30 35.2 35 24 24.3 19.8 29 23.4 23.9 45.9 4.01
SO₄-S(mg/l) 5.8 4.9 7.5 8 7.5 6.7 5.5 3.5 4.2 4.1 4.2 5.2 4.8

Precipitation

Observation 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
Volume (mm) 270 701 668 592 833 635 1090 938 985 661 712 545 783
pH 4.4 4.6 4.8 4.8 4.8 4.9 4.9 4.8 5 5 5.2 5 5
Conductivity (μS/l) 22.1 21.6 21.9 22.1 20.9 22.2 19.5 19.6 23.8 36.3 23.6 23.4 22.5
Na (mg/l) 1.5 1.8 1.7 1.6 1.8 1.4 1.3 1.4 2 1.3 1.6 1.5 1.7
K (mg/l) 0.16 0.15 0.42 0.14 0.15 0.12 0.12 0.11 0.13 0.18 0.16 0.15 0.16
Ca (mg/l) 0.7 0.4 0.5 0.5 0.4 0.3 0.4 0.3 0.4 0.5 0.5 0.4 0.3
Mg (mg/l) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.1 0.2 0.2 0.2
Fe (mg/l) 0.01 0.01 0.01 0 0 0.01 0 0.05 0 0 0 0 0
Al (mg/l) 0.01 0.01 0.01 0 0 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0
PO₄-P (mg/l) 0 0 0.02 0.01 0.01 0.03 0 0 0 0.01 0 0 0
NO₃-N (mg/l) 0.3 0.3 0.4 0.4 0.4 0.3 0.3 0.4 0.3 0.3 0.4 0.4 0.3
NH₄-N (mg/l) 0.2 0.4 0.5 0.3 0.3 0.5 0.3 0.3 0.2 0.5 0.3 0.4 0.3
Cl (mg/l) 2.2 2.9 3 3.1 3.4 2.5 2.4 2.3 3.2 2 2.7 2.7 3
SO₄-S (mg/l) 0.6 0.6 0.7 0.7 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.6 0.5
Dissolved organic carbon 3.1 2.9 2.1 2

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