The P301 subcatchment is one of the most heavily instrumented and monitored Southern Sierra CZO sites in the Providence Creek Headwater Catchments. It includes the P301 eddy covariance flux tower, critical zone tree, and water balance transect.
0.992 km2 Area
1790 - 2117 m Elev
Parent Field Area:
Providence Creek Headwater Catchments (1660 - 2117 m elevation) ▲
This site is part of an elevational transect that increases in altitude from west to east: SJER (400 m), Soaproot Saddle (1100 m), Providence Creek Headwater Catchments (P301, 2000 m), and Short Hair Creek (2700 m).
Along this transect, bedrock lithology is generally constant (intrusive felsic plutons) while air temperature, precipitation phase, vegetation species diversity and abundance, and subsurface properties vary. A series of eddy-covariance gas flux towers are installed at these sites. Transect-length work has included soil depth, chemistry, and moisture characterizations; vegetation surveys; forest water balance and usage research; and wind-blown dust geochemistry and microbiology studies.
Inside the P301 subcatchment, the SSCZO's established the first Critical Zone Tree. This CZO tree is a White Fir (Abies concolor) that has been intensely instrumented with soil moisture, temperature, and matric potential sensors, snow depth, solar radiation, and sap flow sensors, resin nutrient collectors, tension lysimeters and time lapse photography. Snowmelt patterns around the tree can be viewed in this 2008-2009 time lapse video.
Also located within the headwaters of the P301 subcatchment is a series of montane meadows. A water balance transect has been established which is comprised of monitoring wells, piezometers, soil sensors, and meteorological sensors.
Instrumentation as of the beginning of 2013.
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Map showing some instrumentation, including sensor network, flux tower, gauging stations, and CZT-1
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Flux Tower Transect, P301 - Flux Tower, Meteorology (2007-2015)
8 components • P301 Flux Tower (2015 m elevation), Providence Creek Subcatchment P301 • Climatology / Meteorology, Biology / Ecology • Mike Goulden, Anne Kelly
National - Stream Water Chemistry (1982-2015)
1 components • Bisley, Betasso, East Peak, Marshall Gulch (High-Elevation), Providence Creek Subcatchment P301, Providence Creek Subcatchment P303, Providence Creek Subcatchment P304, Eel River Watershed, Puente Roto, Rio Blanco, Rio Icacos, Susquehanna Shale Hills Critical Zone Observatory • Biogeochemistry, Biology / Ecology, Hydrology, Water Chemistry • Kim Hyojin, Jim Bishop, William Dietrich, Inez Fung, William H. McDowell, Susan L. Brantley, Beth Hoagland, Pamela L. Sullivan, Molly Cain, Andrew Neal, Jessica Fisher, Tess Russo,Niwot Ridge LTER, Fengjing Liu, Jon Chorover, Peter Troch, Jennifer McIntosh, Paul Brooks, Nate Abramson, Ingo Heidbüchel, Mary Key Amistadi, Shawn Alexander Pedron Jon Chorover, Peter Troch, Paul Brooks, Mary Key Amistadi, Timothy Corley, Xavier Zapata-Rios, Mark Losleben, Katherine Condon, Shawn Alexander Pedron
P301 Water Balance Transect - Soil Moisture, Soil Temperature, Snow Depth (2011-2015)
13 components • Providence Creek Subcatchment P301 • Hydrology • Roger Bales, Steven Glaser
The primary Critical Zone Tree in the Southern Sierra CZO is a White Fir (Abies concolor) that has been intensely instrumented with soil moisture, temperature, and matric potential sensors, snow depth, solar radiation, and sap flow sensors, resin nutrient collectors, tension lysimeters and time lapse photography. The Southern Sierra CZO currently has three instrumented trees.
A photo gallery of the Critical Zone Trees can be found here.
Within the headwaters of the P301 catchment is a series of montane meadows. The P301 water balance transect is comprised of monitoring wells, piezometers, soil sensors, and meteorological sensors.
A photo gallery of the P301 water balance transect can be found here.
Hundreds of instruments and sensors have been deployed in the primary SSCZO research site of the Providence Creek watershed as well as in Wolverton basin. Additional SSCZO flux towers and instruments have also been installed at the San Joaquin Experimental Range, Soaproot Saddle, and Short Hair Creek.
Explore more photos of the intstuments and sensors used by SSCZO.