from Wiktionary, Creative Commons Attribution/Share-Alike License.
- proper noun A taxonomic
genuswithin the subfamily Rosoideae— many Alpineplants.
- noun geology Either of two
climatic stagesof the late glacialperiod in Northern Europe in which plants of the genus Dryas were abundant
Sorry, no etymologies found.
Prostrate and dwarf shrubs such as Dryas spp., arctic willow, and polar willow are likely to decline in abundance with warming in the low Arctic, due to competition with taller plants, but are likely to increase in abundance in the current polar deserts.
 - and some, such as Dryas drummondii, are pioneer species that tend to occur prior to tree-dominated stages of succession
PLoS ONE Alerts: New Articles Duncan N. L. Menge et al. 2010
The processes involved in the TP are resembling those accompanying falling P/Shoemaker-Levy 9 onto Jupiter and, possibly, the impact-caused Younger Dryas cooling ~13 ka ago.
It will probably be on the scale of the Younger Dryas event.
… The main cooling event that marks the beginning of the Younger Dryas seems have occurred within less than 100 years, according to Greenland ice core data Alley et al.
That triggered changes in Atlantic Ocean currents, which ushered in a 1,300-year ice age known as the Younger Dryas.
Boing Boing 2008
Allozyme and morphological variation in two subspecies of Dryas octopetala
Molecular phylogeography of Dryas integrifolia: glacial refugia and postglacial recolonization.
Allozyme and morphological variation in two subspecies of Dryas octopetala (Rosaceae) in Alaska.
They found that the major source of increased methane during the Younger Dryas-Preboreal transition was from wetlands.