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Global warming and plant growth

24 June 2011 10:30

control Suzanne Lubbe assembling an OTC warmed

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.
control warmed  
7
OTC placed
5 Cass 2011
early snowmelt
photo taken
24 June 2011
8
OTC placed
5 June 2011
early snowmelt
photo taken
24 June 2011
9
OTC placed
5 June 2011
early snowmelt
photo taken
24 June 2011
10
OTC placed
5 June 2011
early snowmelt
photo taken
24 June 2011
11
OTC placed
5 June 2011
early snowmelt
photo taken
24 June 2011
12
OTC placed
5 June 2011
early snowmelt
photo taken
24 June 2011
17
OTC placed
5 June 2011
early snowmelt
photo taken
24 June 2011
control warmed number
1
OTC placed
24 June 2011
late snowmelt
photo taken
24 June 2011
2
OTC placed
24 June 2011
late snowmelt
photo taken
24 June 2011
3
OTC placed
24 June 2011
late snowmelt
photo taken
24 June 2011
4
OTC placed
24 June 2011
late snowmelt
photo taken
24 June 2011
5
OTC placed
24 June 2011
late snowmelt
photo taken
24 June 2011
6
OTC placed
24 June 2011
late snowmelt
photo taken
24 June 2011
13
OTC placed
24 June 2011
late snowmelt
photo taken
24 June 2011
14
OTC placed
24 June 2011
late snowmelt
photo taken
24 June 2011
16
OTC placed
24 June 2011
late snowmelt
photo taken
24 June 2011



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