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Klady, Rebecca A; Henry, Gregory HR; Lemay, Valerie (2011): Flower and seed biomass, and germination rate of arctic tundra plants in response to long term experimental warming [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.812091, 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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Abstract:
We provide new information on changes in tundra plant sexual reproduction in response to long-term (12 years) experimental warming in the High Arctic. Open-top chambers (OTCs) were used to increase growing season temperatures by 1-2 °C across a range of vascular plant communities. The warming enhanced reproductive effort and success in most species; shrubs and graminoids appeared to be more responsive than forbs. We found that the measured effects of warming on sexual reproduction were more consistently positive and to a greater degree in polar oasis compared with polar semidesert vascular plant communities. Our findings support predictions that long-term warming in the High Arctic will likely enhance sexual reproduction in tundra plants, which could lead to an increase in plant cover. Greater abundance of vegetation has implications for primary consumers - via increased forage availability, and the global carbon budget - as a function of changes in permafrost and vegetation acting as a carbon sink. Enhanced sexual reproduction in Arctic vascular plants may lead to increased genetic variability of offspring, and consequently improved chances of survival in a changing environment. Our findings also indicate that with future warming, polar oases may play an important role as a seed source to the surrounding polar desert landscape.
Project(s):
International Polar Year (2007-2008) (IPY)
Coverage:
Latitude: 78.883300 * Longitude: -75.916700
Date/Time Start: 2004-07-30T00:00:00 * Date/Time End: 2004-07-30T00:00:00
Event(s):
Alexandra_Fiord_sites * Latitude: 78.883300 * Longitude: -75.916700 * Location: Ellesmere Island, Canadian Arctic Archipelago * Method/Device: Sampling by hand (HAND)
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets

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Datasets listed in this publication series

  1. Klady, RA; Henry, GHR; Lemay, V (2011): (Table 5) Reproductive success as cumulative percent germination of arctic tundra plants in control and warming plots, Alexandra Fiord. https://doi.org/10.1594/PANGAEA.812088
  2. Klady, RA; Henry, GHR; Lemay, V (2011): (Table 3) Reproductive effort as flower biomass of arctic tundra plants in control and warming plots, Alexandra Fiord. https://doi.org/10.1594/PANGAEA.812086
  3. Klady, RA; Henry, GHR; Lemay, V (2011): (Table 7) Reproductive success as peak germination of arctic tundra plants in control and warming plots, Alexandra Fiord. https://doi.org/10.1594/PANGAEA.812090
  4. Klady, RA; Henry, GHR; Lemay, V (2011): (Table 4) Reproductive success as seed biomass of arctic tundra plants in control and warming plots, Alexandra Fiord. https://doi.org/10.1594/PANGAEA.812087
  5. Klady, RA; Henry, GHR; Lemay, V (2011): (Table 6) Reproductive success as Timson's index germination of arctic tundra plants in control and warming plots, Alexandra Fiord. https://doi.org/10.1594/PANGAEA.812089