Harvard Forest Chronic Nitrogen Plots Litter Decomposition Study Litter mass remaining as percent of initial mass Collection Month Year Species Plot/Treatment n-wt AvgMassRemain SDMassRemain 1 8 89 Red Pine Pine Control 4 85.27 0.27 2 11 89 Red Pine Pine Control 4 73.50 2.28 3 8 90 Red Pine Pine Control 4 63.97 5.35 4 11 90 Red Pine Pine Control 4 50.84 8.95 5 8 91 Red Pine Pine Control 4 46.98 5.05 6 11 91 Red Pine Pine Control 4 38.81 7.77 7 8 92 Red Pine Pine Control 4 34.10 3.35 8 11 92 Red Pine Pine Control 4 38.47 7.14 9 8 93 Red Pine Pine Control 4 33.12 6.72 10 11 93 Red Pine Pine Control 4 26.39 2.23 11 8 94 Red Pine Pine Control 8 23.55 3.78 12 11 94 Red Pine Pine Control 8 21.31 2.89 1 8 89 Red Pine Pine High N 4 83.58 1.68 2 11 89 Red Pine Pine High N 4 74.75 1.21 3 8 90 Red Pine Pine High N 4 62.50 1.46 4 11 90 Red Pine Pine High N 4 59.15 5.11 5 8 91 Red Pine Pine High N 4 55.98 4.47 6 11 91 Red Pine Pine High N 4 50.16 8.93 7 8 92 Red Pine Pine High N 4 38.30 2.58 8 11 92 Red Pine Pine High N 4 36.28 5.23 9 8 93 Red Pine Pine High N 4 42.93 8.91 10 11 93 Red Pine Pine High N 4 32.80 2.66 11 8 94 Red Pine Pine High N 8 33.73 4.85 12 11 94 Red Pine Pine High N 8 32.99 6.65 1 8 89 Red Pine Pine Low N 4 85.38 0.64 2 11 89 Red Pine Pine Low N 4 73.68 1.65 3 8 90 Red Pine Pine Low N 4 57.00 5.52 4 11 90 Red Pine Pine Low N 4 50.93 3.76 5 8 91 Red Pine Pine Low N 4 53.62 7.93 6 11 91 Red Pine Pine Low N 4 40.59 8.93 7 8 92 Red Pine Pine Low N 4 31.70 5.51 8 11 92 Red Pine Pine Low N 4 30.34 7.14 9 8 93 Red Pine Pine Low N 4 32.19 3.66 10 11 93 Red Pine Pine Low N 4 27.38 12.60 11 8 94 Red Pine Pine Low N 8 25.90 6.52 12 11 94 Red Pine Pine Low N 8 25.52 2.91 1 8 89 Red Pine HardControl 4 82.24 0.93 2 11 89 Red Pine HardControl 4 76.10 2.65 3 8 90 Red Pine HardControl 4 69.49 2.31 4 11 90 Red Pine HardControl 4 60.69 11.02 5 8 91 Red Pine HardControl 4 51.18 1.99 6 11 91 Red Pine HardControl 4 40.41 3.71 7 8 92 Red Pine HardControl 3 44.32 11.66 8 11 92 Red Pine HardControl 4 33.24 7.33 9 8 93 Red Pine HardControl 4 36.21 8.27 10 11 93 Red Pine HardControl 4 37.44 5.04 11 8 94 Red Pine HardControl 8 31.69 7.68 12 11 94 Red Pine HardControl 8 22.41 6.59 1 8 89 Red Pine Hard High N 4 86.78 0.71 2 11 89 Red Pine Hard High N 4 78.07 2.57 3 8 90 Red Pine Hard High N 4 68.99 0.85 4 11 90 Red Pine Hard High N 4 64.56 1.07 5 8 91 Red Pine Hard High N 4 62.45 3.94 6 11 91 Red Pine Hard High N 4 63.16 3.03 7 8 92 Red Pine Hard High N 4 50.56 9.75 8 11 92 Red Pine Hard High N 4 59.99 3.94 9 8 93 Red Pine Hard High N 4 53.27 12.48 10 11 93 Red Pine Hard High N 4 55.67 5.74 11 8 94 Red Pine Hard High N 8 44.49 11.30 12 11 94 Red Pine Hard High N 8 49.73 4.64 1 8 89 Red Pine Hard Low N 4 85.90 1.21 2 11 89 Red Pine Hard Low N 4 74.70 2.51 3 8 90 Red Pine Hard Low N 4 71.77 2.07 4 11 90 Red Pine Hard Low N 4 62.84 2.81 5 8 91 Red Pine Hard Low N 4 55.95 2.77 6 11 91 Red Pine Hard Low N 4 54.61 3.06 7 8 92 Red Pine Hard Low N 4 53.10 5.48 8 11 92 Red Pine Hard Low N 4 47.14 11.43 9 8 93 Red Pine Hard Low N 4 37.74 9.49 10 11 93 Red Pine Hard Low N 3 38.33 8.17 11 8 94 Red Pine Hard Low N 8 43.65 5.07 12 11 94 Red Pine Hard Low N 8 40.03 10.59 1 8 89 Red Maple Pine Control 4 67.70 1.55 2 11 89 Red Maple Pine Control 4 57.98 4.90 3 8 90 Red Maple Pine Control 4 53.12 0.94 4 11 90 Red Maple Pine Control 4 43.40 2.15 5 8 91 Red Maple Pine Control 4 48.06 4.85 6 11 91 Red Maple Pine Control 4 41.62 2.48 7 8 92 Red Maple Pine Control 4 33.04 5.49 8 11 92 Red Maple Pine Control 4 36.89 7.95 9 8 93 Red Maple Pine Control 4 34.11 5.94 10 11 93 Red Maple Pine Control 4 41.30 5.89 11 8 94 Red Maple Pine Control 8 34.93 4.38 12 11 94 Red Maple Pine Control 8 24.35 6.21 1 8 89 Red Maple Pine High N 3 68.33 1.10 2 11 89 Red Maple Pine High N 4 61.27 2.69 3 8 90 Red Maple Pine High N 4 55.13 1.68 4 11 90 Red Maple Pine High N 4 52.68 2.21 5 8 91 Red Maple Pine High N 4 51.32 3.23 6 11 91 Red Maple Pine High N 4 44.23 5.12 7 8 92 Red Maple Pine High N 4 44.79 3.57 8 11 92 Red Maple Pine High N 4 41.75 6.66 9 8 93 Red Maple Pine High N 3 42.93 5.42 10 11 93 Red Maple Pine High N 4 39.99 1.27 11 8 94 Red Maple Pine High N 7 40.35 2.23 12 11 94 Red Maple Pine High N 8 32.75 4.71 1 8 89 Red Maple Pine Low N 4 67.74 1.80 2 11 89 Red Maple Pine Low N 4 57.14 1.50 3 8 90 Red Maple Pine Low N 4 49.11 2.41 4 11 90 Red Maple Pine Low N 4 43.58 2.64 5 8 91 Red Maple Pine Low N 4 39.57 8.94 6 11 91 Red Maple Pine Low N 4 47.10 8.08 7 8 92 Red Maple Pine Low N 4 42.56 5.62 8 11 92 Red Maple Pine Low N 3 31.22 1.68 9 8 93 Red Maple Pine Low N 4 27.47 8.71 10 11 93 Red Maple Pine Low N 4 33.07 11.06 11 8 94 Red Maple Pine Low N 8 30.45 7.91 12 11 94 Red Maple Pine Low N 8 25.90 7.92 1 8 89 Red Maple HardControl 4 66.23 1.08 2 11 89 Red Maple HardControl 4 58.11 1.42 3 8 90 Red Maple HardControl 4 48.39 1.42 4 11 90 Red Maple HardControl 4 44.98 3.23 5 8 91 Red Maple HardControl 4 34.01 8.72 6 11 91 Red Maple HardControl 4 30.01 8.24 7 8 92 Red Maple HardControl 4 30.89 4.08 8 11 92 Red Maple HardControl 4 31.64 6.78 9 8 93 Red Maple HardControl 4 28.08 10.93 10 11 93 Red Maple HardControl 4 23.06 8.37 11 8 94 Red Maple HardControl 8 28.93 8.56 12 11 94 Red Maple HardControl 8 28.54 8.98 1 8 89 Red Maple Hard High N 4 67.62 2.41 2 11 89 Red Maple Hard High N 4 59.27 2.62 3 8 90 Red Maple Hard High N 4 53.68 5.10 4 11 90 Red Maple Hard High N 4 54.08 6.36 5 8 91 Red Maple Hard High N 4 50.14 3.42 6 11 91 Red Maple Hard High N 4 55.09 1.75 7 8 92 Red Maple Hard High N 4 53.58 7.30 8 11 92 Red Maple Hard High N 4 54.86 4.03 9 8 93 Red Maple Hard High N 4 53.56 5.00 10 11 93 Red Maple Hard High N 4 56.30 5.65 11 8 94 Red Maple Hard High N 8 56.50 16.14 12 11 94 Red Maple Hard High N 8 49.36 7.39 1 8 89 Red Maple Hard Low N 4 65.05 2.13 2 11 89 Red Maple Hard Low N 4 51.75 4.79 3 8 90 Red Maple Hard Low N 4 45.93 5.92 4 11 90 Red Maple Hard Low N 4 45.69 2.76 5 8 91 Red Maple Hard Low N 4 45.83 3.51 6 11 91 Red Maple Hard Low N 4 52.57 5.58 7 8 92 Red Maple Hard Low N 4 44.75 4.19 8 11 92 Red Maple Hard Low N 4 43.28 5.31 9 8 93 Red Maple Hard Low N 4 41.23 7.95 10 11 93 Red Maple Hard Low N 4 41.97 4.90 11 8 94 Red Maple Hard Low N 8 52.56 6.94 12 11 94 Red Maple Hard Low N 8 40.05 5.73 1 8 89 Black Oak HardControl 4 83.83 2.42 2 11 89 Black Oak HardControl 4 71.73 1.08 3 8 90 Black Oak HardControl 4 51.19 3.11 4 11 90 Black Oak HardControl 4 46.39 5.61 5 8 91 Black Oak HardControl 4 36.70 4.34 6 11 91 Black Oak HardControl 4 32.16 2.95 7 8 92 Black Oak HardControl 4 30.13 0.52 8 11 92 Black Oak HardControl 4 22.53 3.78 9 8 93 Black Oak HardControl 4 27.31 2.36 10 11 93 Black Oak HardControl 4 12.24 7.35 11 8 94 Black Oak HardControl 8 21.68 8.55 12 11 94 Black Oak HardControl 8 19.25 7.94 1 8 89 Black Oak Hard High N 4 79.74 1.27 2 11 89 Black Oak Hard High N 4 64.46 6.34 3 8 90 Black Oak Hard High N 4 54.13 2.30 4 11 90 Black Oak Hard High N 4 53.48 4.12 5 8 91 Black Oak Hard High N 4 45.67 6.48 6 11 91 Black Oak Hard High N 4 46.09 2.66 7 8 92 Black Oak Hard High N 4 50.34 4.56 8 11 92 Black Oak Hard High N 4 44.86 5.08 9 8 93 Black Oak Hard High N 4 44.91 0.38 10 11 93 Black Oak Hard High N 4 42.99 5.64 11 8 94 Black Oak Hard High N 8 39.62 7.04 12 11 94 Black Oak Hard High N 8 37.89 7.54 1 8 89 Black Oak Hard Low N 4 81.17 2.45 2 11 89 Black Oak Hard Low N 4 60.88 3.24 3 8 90 Black Oak Hard Low N 4 54.31 3.34 4 11 90 Black Oak Hard Low N 4 43.13 4.15 5 8 91 Black Oak Hard Low N 4 39.02 4.31 6 11 91 Black Oak Hard Low N 4 42.62 11.22 7 8 92 Black Oak Hard Low N 4 34.93 4.38 8 11 92 Black Oak Hard Low N 4 38.18 2.20 9 8 93 Black Oak Hard Low N 4 39.98 10.36 10 11 93 Black Oak Hard Low N 4 39.48 8.96 11 8 94 Black Oak Hard Low N 8 31.44 13.22 12 11 94 Black Oak Hard Low N 8 29.40 8.56 1 8 89 Yellow Birch Pine Control 4 75.20 2.44 2 11 89 Yellow Birch Pine Control 4 63.87 2.29 3 8 90 Yellow Birch Pine Control 4 64.48 5.05 4 11 90 Yellow Birch Pine Control 4 40.95 6.31 5 8 91 Yellow Birch Pine Control 4 41.19 3.75 6 11 91 Yellow Birch Pine Control 4 40.90 0.91 7 8 92 Yellow Birch Pine Control 4 34.05 6.67 8 11 92 Yellow Birch Pine Control 4 35.35 9.53 9 8 93 Yellow Birch Pine Control 4 30.14 9.98 10 11 93 Yellow Birch Pine Control 4 31.60 3.93 11 8 94 Yellow Birch Pine Control 8 22.75 3.36 12 11 94 Yellow Birch Pine Control 8 15.96 3.33 1 8 89 Yellow Birch Pine High N 4 75.48 4.81 2 11 89 Yellow Birch Pine High N 4 64.80 0.84 3 8 90 Yellow Birch Pine High N 4 58.82 2.75 4 11 90 Yellow Birch Pine High N 4 53.45 4.16 5 8 91 Yellow Birch Pine High N 4 48.02 3.17 6 11 91 Yellow Birch Pine High N 4 47.56 2.76 7 8 92 Yellow Birch Pine High N 4 49.38 2.97 8 11 92 Yellow Birch Pine High N 4 34.21 5.12 9 8 93 Yellow Birch Pine High N 4 46.82 7.09 10 11 93 Yellow Birch Pine High N 4 33.58 4.26 11 8 94 Yellow Birch Pine High N 8 36.66 7.32 12 11 94 Yellow Birch Pine High N 8 34.63 7.08 1 8 89 Yellow Birch Pine Low N 4 76.16 2.50 2 11 89 Yellow Birch Pine Low N 4 56.16 2.24 3 8 90 Yellow Birch Pine Low N 4 53.29 2.87 4 11 90 Yellow Birch Pine Low N 4 46.98 2.16 5 8 91 Yellow Birch Pine Low N 4 39.09 3.40 6 11 91 Yellow Birch Pine Low N 4 39.38 5.47 7 8 92 Yellow Birch Pine Low N 4 30.60 6.69 8 11 92 Yellow Birch Pine Low N 4 31.91 7.30 9 8 93 Yellow Birch Pine Low N 4 27.29 11.36 10 11 93 Yellow Birch Pine Low N 4 21.72 7.02 11 8 94 Yellow Birch Pine Low N 8 28.30 5.15 12 11 94 Yellow Birch Pine Low N 8 19.08 3.85