A 15,000 year record of vegetation and climate change from a treeline lake in the Rocky Mountains, Wyoming, USAAuthor(s): Scott A. Mensing; John L. Korfmacher; Thomas Minckley; Robert C. Musselman
Source: The Holocene. 22(7): 739-748.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
Download Publication (1.0 MB)
DescriptionFuture climate projections predict warming at high elevations that will impact treeline species, but complex topographic relief in mountains complicates ecologic response, and we have a limited number of long-term studies examining vegetation change related to climate. In this study, pollen and conifer stomata were analyzed from a 2.3 m sediment core extending to 15,330 cal. yr BP recovered from a treeline lake in the Rocky Mountains of Wyoming. Both pollen and stomata record a sequence of vegetation and climate change similar in most respects to other regional studies, with sagebrush steppe and lowered treeline during the Late Pleistocene, rapid upward movement of treeline beginning about 11,500 cal. yr BP, treeline above modern between ~9000 and 6000 cal. yr BP, and then moving downslope ~5000 cal. yr BP, reaching modern limits by ~3000 cal. yr BP. Between 6000 and 5000 cal. yr BP sediments become increasingly organic and sedimentation rates increase. We interpret this as evidence for lower lake levels during an extended dry period with warmer summer temperatures and treeline advance. The complex topography of the Rocky Mountains makes it challenging to identify regional patterns associated with short term climatic variability, but our results contribute to gaining a better understanding of past ecologic responses at high elevation sites.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
Mensing, Scott A.; Korfmacher, John L.; Minckley, Thomas; Musselman, Robert C. 2012. A 15,000 year record of vegetation and climate change from a treeline lake in the Rocky Mountains, Wyoming, USA. The Holocene. 22(7): 739-748.
Keywordsclimate change, conifer stomata, Holocene, pollen, Rocky Mountains, treeline, United States Wyoming
- A multiproxy environmental investigation of Holocene wood from a submerged conifer forest in Lake Huron, USA
- Spring temperature responses of oaks are synchronous with North Atlantic conditions during the last deglaciation
- Holocene vegetation and fire history of the Coast Range, western Oregon, USA
XML: View XML