EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/25/2021 | 2:00 PM - 3:30 PM | SEASONAL AND SPATIAL VARIATION IN TEMPERATURE AND DISSOLVED OXYGEN REGIMES IN HIGH ELEVATION PONDS IN THE SIERRA NEVADA, CALIFORNIA | Virtual Platform
SEASONAL AND SPATIAL VARIATION IN TEMPERATURE AND DISSOLVED OXYGEN REGIMES IN HIGH ELEVATION PONDS IN THE SIERRA NEVADA, CALIFORNIA
Ponds are globally abundant and often regionally outnumber lakes, yet we lack an understanding of their relative importance in a landscape context despite emerging evidence that they are hotspots of carbon cycling and subsidize terrestrial food webs. The Sierra Nevada mountains of California contain thousands of ponds, yet their physical and chemical dynamics remain undocumented, despite their potential sensitivity to observed climatic changes at high elevations.
We characterized stratification dynamics, thermal regimes, and ecosystem metabolism in ponds at the within-basin and among-basin scale, and investigated seasonal variation in a subset of these ponds. We measured 24-hour high frequency temperature and dissolved oxygen and collected water chemistry, pCO2, and oxygen isotope samples in 10 sub-alpine and alpine ponds along an elevational gradient throughout the Sierra Nevada in 2019. We compared these measurements with nearby lakes and found that ponds generally have higher diel temperature variation and CO2 saturation. In 2020, we measured high frequency temperature and dissolved oxygen in 10 ponds in a single basin continuously throughout the summer. Ponds stratified daily and mixed nightly throughout the season, with deeper ponds showing stronger thermal stratification than shallower ponds.
- Ecosystem Dynamics
- Ecosystem functioning
- Nutrients
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Mary Farruggia
(), University of California Davis, mjfarruggia@ucdavis.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Steve Sadro
(), University of California, Davis, ssadro@ucdavis.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Adrianne Smits
(), University of California, Davis, asmits@ucdavis.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -