Van Bogaert, Rik; Jonasson, Christer; De Dapper, Morgan; Callaghan, Terry V (2010): (Table 4a) Assumed asexual regeneration events in aspen (Populus tremula) related to climatic and biotic factors for the period 1916–2009 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.841217, In supplement to: Van Bogaert, R et al. (2010): Range expansion of thermophilic aspen (Populus tremula L.) in the swedish Subarctic. Arctic, Antarctic, and Alpine Research, 42(3), 362-375, https://doi.org/10.1657/1938-4246-42.3.362
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Coverage:
Latitude: 68.400000 * Longitude: 18.900000
Date/Time Start: 1916-01-01T00:00:00 * Date/Time End: 1997-01-01T00:00:00
Minimum Elevation: 341.0 m * Maximum Elevation: 700.0 m
Event(s):
Comment:
The annual number of trees (total n = 160) assumed to have arisen by asexual regeneration was related to: (1) summer temperature (mean = 10.0 °C, SE = 0.14); (2) summer precipitation (mean = 84 mm, SE = 3.46); (3) moth damage to birch, possibly affecting aspen asexual reproduction and survival; high positive values point to increased damage (mean = -0.03 negative birch-minus-pine indices, SE = 0.03).
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Zone | Zone | Van Bogaert, Rik | |||
| 2 | Elevation, minimum | Elev min | m a.s.l. | Van Bogaert, Rik | ||
| 3 | Elevation, maximum | Elev max | m a.s.l. | Van Bogaert, Rik | ||
| 4 | DATE/TIME | Date/Time | Geocode | |||
| 5 | Number | No | Van Bogaert, Rik | of aspen stands established | ||
| 6 | Temperature, difference | delta T | °C | Van Bogaert, Rik | June-July temperature anomaly of previous year | |
| 7 | Precipitation, difference | Precip diff | mm | Van Bogaert, Rik | annual precipitation anomaly of current year | |
| 8 | Index | Index | Van Bogaert, Rik | moth damage anomaly to birch of current year (negative birch-minus-pine indices) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
140 data points
Data
| 1 Zone | 2 Elev min [m a.s.l.] | 3 Elev max [m a.s.l.] | 4 Date/Time | 5 No | 6 delta T [°C] | 7 Precip diff [mm] | 8 Index |
|---|---|---|---|---|---|---|---|
| subalpine | 340 | 500 | 1916 | 6 | 1.1 | -30 | 0.63 |
| subalpine | 340 | 500 | 1918 | 5 | 0.8 | -4 | 0.58 |
| subalpine | 340 | 500 | 1945 | 4 | 0.5 | -25 | 0.37 |
| subalpine | 340 | 500 | 1950 | 2 | 1.6 | -27 | -0.46 |
| subalpine | 340 | 500 | 1955 | 6 | -2.0 | -62 | 0.77 |
| subalpine | 340 | 500 | 1957 | 6 | 0.4 | -37 | 0.48 |
| subalpine | 340 | 500 | 1959 | 4 | -0.5 | -23 | 0.31 |
| subalpine | 340 | 500 | 1960 | 5 | 1.6 | -3 | 0.25 |
| subalpine | 340 | 500 | 1985 | 2 | 0.6 | -9 | 0.11 |
| subalpine | 340 | 500 | 1988 | 3 | 1.4 | -48 | -0.16 |
| treeline | 600 | 700 | 1950 | 3 | 1.6 | -27 | -0.46 |
| treeline | 600 | 700 | 1953 | 4 | 2.8 | -24 | -0.34 |
| treeline | 600 | 700 | 1960 | 4 | 1.6 | -3 | 0.25 |
| treeline | 600 | 700 | 1972 | 4 | 2.3 | -18 | 0.05 |
| treeline | 600 | 700 | 1980 | 4 | 2.2 | 3 | -0.08 |
| treeline | 600 | 700 | 1985 | 4 | 0.6 | -9 | 0.11 |
| treeline | 600 | 700 | 1986 | 5 | 0.8 | -39 | 0.22 |
| treeline | 600 | 700 | 1988 | 6 | 1.4 | -25 | -0.16 |
| treeline | 600 | 700 | 1996 | 3 | -0.6 | -15 | -0.22 |
| treeline | 600 | 700 | 1997 | 5 | 1.4 | -32 | -0.27 |