Mike Goulden UC Irvine ([email protected]) - SAWPA · 2019. 4. 26. · Mike Goulden UC Irvine...

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Mike Goulden UC Irvine ([email protected]) I’ll talk about two projects in the Sierra National Forest (above Fresno, near Shaver Lake) Sierra Nevada Critical Zone Observatory (Sierra CZO) •Funded by NSF •Roger Bales PI (UC Merced) •Basic science (hydrology, ecology, biogeochemistry, climate change) •Lots of high tech measurements – methods development Kings River Experimental Watershed (KREW) •Funded by USFS •Carolyn Hunsaker PI (USFS PSW Fresno lab) •Effects of montane forest thinning and prescribed fire on water quality and quantity •Less high tech – an excellent experimental design and approach that seems very relevant to what you are discussing •I’m not really involved in KREW but familiar with what they are doing

Transcript of Mike Goulden UC Irvine ([email protected]) - SAWPA · 2019. 4. 26. · Mike Goulden UC Irvine...

  • Mike Goulden UC Irvine ([email protected])

    I’ll talk about two projects in the Sierra National Forest (above Fresno, near Shaver Lake)

    Sierra Nevada Critical Zone Observatory (Sierra CZO) •Funded by NSF •Roger Bales PI (UC Merced) •Basic science (hydrology, ecology, biogeochemistry, climate change) •Lots of high tech measurements – methods development

    Kings River Experimental Watershed (KREW) •Funded by USFS •Carolyn Hunsaker PI (USFS PSW Fresno lab) •Effects of montane forest thinning and prescribed fire on water quality and quantity •Less high tech – an excellent experimental design and approach that seems very relevant to what you are discussing •I’m not really involved in KREW but familiar with what they are doing

  • Relationships between elevation, climate, and ecosystem properties in the Sierra CZO

    Mike Goulden and the Sierra CZO Science Team

    Sierra CZO Research focus:

    water balance, nutrient cycling & weathering across the rain-snow transition

  • Science Questions

    • What are spatial and temporal patterns of water balance, biogeochemistry, plant production, etc?

    • What physical, chemical, and biological mechanisms control these patterns?

    • How might climate change affect water balance, biogeochemistry, plant production, etc?

    Methodological Needs

    • Approaches to sample spatial and temporal heterogeneity

    • Methods that hold up to harsh conditions

    • Measure the same thing several ways – close budgets

    • Experimental design that addresses climate

    Sierra CZO

  • infiltration

    evapotranspiration

    snowmelt

    streamflow

    sublimation

    ground & surface water exchange

    precipitation

    Unifying theme - Water balance

    Sierra CZO Core PIs Roger Bales et al - Mountain

    hydrology and biogeochemistry – snow depth, meteorology, etc

    Martha Conklin - Groundwater-surface water interactions - meadow hydrology – wells, etc

    Steven Glaser - wireless sensor networks for environmental monitoring - 60-node network

    Michael Goulden – Terrestrial Ecosystem Ecology- flux tower, etc

    Jan Hopmans - Vadose Zone Hydrology- soil moisture, sap flow,

    Carolyn Hunsaker - landscape ecology - stream gauges, water-quality, etc

    Dale Johnson - Biogeochemical cycling – spatial and temporal N dynamics, etc

    Clifford Riebe - geomorphology – rates or erosion, soil formation, et

    Christina Tague – coupled hydrology and ecosystem modeling

    Sierra CZO

    //smb.bren.ucsb.edu/nmolotch/snow/temp_backup/melt_flux_movie.ppt

  • 600

    1200

    1800

    2400

    3000 Elev., m

    Experimental design

    elevation/climate gradient

    Sierra CZO

  • 2020 m •Midmontane forest •Annual mean T 8.9oC •Winter mean T 3.7oC •Annual P1015mm •130 days w/ snow •Max tree ht 30.1 m •53% Tree cover

  • Sierra CZO

  • KREW

  • KREW

  • KREW

  • Two thoughts • Effects of treatment of water balance often surprisingly

    small and recovery surprisingly fast • High tech instruments are helpful, but a good

    experimental design and control are essential More info: Sierra Critical Zone Observatory http://criticalzone.org/sierra/ Second link if you Google: SSCZO

    KREW http://www.fs.fed.us/psw/topics/water/kingsriver/ First link if you Google: KREW Hunsaker Several nice pages on right panel “About this Research”


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