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Global warming and plant growth | 24 June 2011 10:30 |
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control | Suzanne Lubbe assembling an OTC | warmed |
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Today we placed 9 OTC's for Jelte Rozema. In the beginning of June, he was in the station but could not finish his work due to late snowmelt. Cassiope tetragona (Arctic bell-heather) has more flowers in the warmed treatment. Compare the pictures from control plots (left column) and warmed plots (right column). The warmed plots have an OTC, a open top chamber, which raises the temperature on average 2 degrees Celsius. The first 8 rows are plots where the OTC was placed on 5 June. The last 9 rows are plots which were still snow covered in the beginning of June. These OTC's were placed on the day of the pictures. There should not be any difference between the two colums for these plots. In general the last 9 rows were appearing under the snow later, so flowering is not as much as in the first 7 control rows. The green disk in some pictures is covering a temperature logger to monitor the experimental warming. |
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7 OTC placed 5 Cass 2011 early snowmelt photo taken 24 June 2011 |
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8 OTC placed 5 June 2011 early snowmelt photo taken 24 June 2011 |
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9 OTC placed 5 June 2011 early snowmelt photo taken 24 June 2011 |
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10 OTC placed 5 June 2011 early snowmelt photo taken 24 June 2011 |
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11 OTC placed 5 June 2011 early snowmelt photo taken 24 June 2011 |
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12 OTC placed 5 June 2011 early snowmelt photo taken 24 June 2011 |
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17 OTC placed 5 June 2011 early snowmelt photo taken 24 June 2011 |
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1 OTC placed 24 June 2011 late snowmelt photo taken 24 June 2011 |
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2 OTC placed 24 June 2011 late snowmelt photo taken 24 June 2011 |
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3 OTC placed 24 June 2011 late snowmelt photo taken 24 June 2011 |
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4 OTC placed 24 June 2011 late snowmelt photo taken 24 June 2011 |
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5 OTC placed 24 June 2011 late snowmelt photo taken 24 June 2011 |
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6 OTC placed 24 June 2011 late snowmelt photo taken 24 June 2011 |
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13 OTC placed 24 June 2011 late snowmelt photo taken 24 June 2011 |
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14 OTC placed 24 June 2011 late snowmelt photo taken 24 June 2011 |
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16 OTC placed 24 June 2011 late snowmelt photo taken 24 June 2011 |
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