1 / 6

Carbon and water cycling along the western Sierra gradient

Carbon and water cycling along the western Sierra gradient. Anne Kelly SSCZO annual meeting August 21, 2012. Overview. How does climate control carbon and water cycling? How do drought and cold limit growth and water use?

kumiko
Download Presentation

Carbon and water cycling along the western Sierra gradient

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Carbon and water cycling along the western Sierra gradient Anne Kelly SSCZO annual meeting August 21, 2012

  2. Overview • How does climate control carbon and water cycling? • How do drought and cold limit growth and water use? • Are there thresholds and resiliencies in ecosystem response along a gradient of drought and temperature? • Four towers: 400, 1200, 2000, 2800 m • Weather, CO2 exchange, ET • Hourly to interannual • Severely drought limited to severely cold limited with a happy zone in between • Dendrometers, sap flux to for individual tree carbon and water cycling • Litter collection, soil moisture, soil respiration, etc.

  3. P301 – not limited by cold or drought GEE (tC/ha) temp PAR NEE VPD ET (mm) tree biomass soil VWC

  4. Seasonality of water and carbon exchange

  5. Elevation patterns

  6. Future work • How does cold and drought control ecosystem type, function, productivity, ET, and phenology along the gradient • Step changes/vulnerability • No changes/resilience • How does species’ growth and water use vary along the gradient within species and among species? • How do these forests compare to similar forests in Southern California (latitudinal gradient)?

More Related