Klady, Rebecca A; Henry, Gregory HR; Lemay, Valerie (2011): (Table 6) Reproductive success as Timson's index germination of arctic tundra plants in control and warming plots, Alexandra Fiord [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.812089, In supplement to: Klady, RA et al. (2011): Changes in high arctic tundra plant reproduction in response to long-term experimental warming. Global Change Biology, 17(4), 1611-1624, https://doi.org/10.1111/j.1365-2486.2010.02319.x
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Coverage:
Latitude: 78.883300 * Longitude: -75.916700
Event(s):
Alexandra_Fiord_sites * Latitude: 78.883300 * Longitude: -75.916700 * Location: Ellesmere Island, Canadian Arctic Archipelago * Method/Device: Sampling by hand (HAND)
Comment:
Germination rate was calculated using a modified Timson's Index (TIm):SumG/t. This value was calculated by first obtaining average percent germination per 3-day interval, which was the maximum frequency that germinants were counted and removed from Petri plates. These averages were then summed as a progressive total of daily cumulative germination (SG) over the number of measurement increments in the trial period, which in this study was 12 (i.e. eleven 3-day increments and one 2-day increment). The resultant value was then divided by the total number of days in the germination trial period (t). n = 37 plots per treatment/site.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Vegetation type | Vegetation type | Klady, Rebecca A | PSD = polar semidesert | ||
| 2 | Experimental treatment | Exp treat | Klady, Rebecca A | Open-top chamber (OTC) warming experiment, in situ | ||
| 3 | Index | Index | Klady, Rebecca A | Open-top chamber (OTC) warming experiment, in situ | Salix arctica | |
| 4 | Salix arctica, standard deviation | S. arctica std dev | ± | Klady, Rebecca A | Open-top chamber (OTC) warming experiment, in situ | |
| 5 | Index | Index | Klady, Rebecca A | Open-top chamber (OTC) warming experiment, in situ | Festuca brachyphylla | |
| 6 | Festuca brachyphylla, standard deviation | F. brachyphylla std dev | ± | Klady, Rebecca A | Open-top chamber (OTC) warming experiment, in situ | |
| 7 | Index | Index | Klady, Rebecca A | Open-top chamber (OTC) warming experiment, in situ | Eriophorum angustifolium | |
| 8 | Eriophorum angustifolium, standard deviation | E. angustifolium std dev | ± | Klady, Rebecca A | Open-top chamber (OTC) warming experiment, in situ |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
57 data points
Data
| 1 Vegetation type (PSD = polar semidesert) | 2 Exp treat | 3 Index (Salix arctica) | 4 S. arctica std dev [±] | 5 Index (Festuca brachyphylla) | 6 F. brachyphylla std dev [±] | 7 Index (Eriophorum angustifolium) | 8 E. angustifolium std dev [±] |
|---|---|---|---|---|---|---|---|
| Sedge Meadow | control (C) | 5.5 | 3.1 | 0.1 | 0.3 | ||
| Sedge Meadow | warming (W) | 8.1 | 1.7 | 1.4 | 1.1 | ||
| Cassiope Heath | control (C) | 4.0 | 1.7 | ||||
| Cassiope Heath | warming (W) | 9.4 | 0.4 | ||||
| Dryas Heath | control (C) | 4.3 | 2.2 | 0.8 | 0.5 | ||
| Dryas Heath | warming (W) | 8.2 | 2.4 | 1.3 | 0.7 | ||
| Dry Willow | control (C) | 4.8 | 2.8 | 0 | |||
| Dry Willow | warming (W) | 6.1 | 3.9 | 1 | 0.8 | ||
| PSD- Granite | control (C) | 0.3 | 0.5 | ||||
| PSD- Granite | warming (W) | 0.5 | 0.9 | ||||
| PSD- Dolomite | control (C) | 0.0 | |||||
| PSD- Dolomite | warming (W) | 0.0 |