© Margot Wholey December 2015
Drought, forest mortality, and changing climate have intensifed the need to rapidly and thoroughly understand the critical zone. How will warmer air temperatures impact Sierra snowpack? How much of the water in soil can plants actually use? How do bedrock and soil nutrients influence forest growth? We are answering questions important for the resilience of California - and beyond.
Our researchers actively participate in collaborative resource management groups to communicate findings and address complex issues in water and forest management. Some of these groups include the Dinkey Landscape Restoration Project, Tulare Basin Watershed Connections Collaborative, and Southern Sierra Integrated Regional Water Management Group.
The Southern Sierra Critical Zone Observatory has co-hosted tours of our field areas for professionals in forestry, water management, and legislation and policy. Previous field trips have been in partnership with the U.S. Forest Service Pacific Southwest Research Station and the Sierra Nevada Adaptive Management Project. These tours and discussions have focused on forest management actions including mechanical thinning and preparation for prescribed burns, along with cutting-edge instrumentation at our sites which has been adopted in other watersheds in California.
Our researchers send written briefings to elected state and federal officials and meet with local, regional, and federal decision-makers. We share relevant findings to inform the present and future decisions concerning our natural resources and ecosystem services.
On August 24, 2011, Barbara Boxer visited the UC Merced campus and met with students and professors at the Sierra Nevada Research Institute. During her visit, she toured the lab space and learned about research activities at the SSCZO as it relates to California's climate and water resources.
Segment begins at 1:07. Video by UC Merced Office of Communications. Original video link
Carolyn Hunsaker (US Forest Service researcher) runs through the agenda for the day.
Roger Bales (professor and SNRI Director at UC Merced) explains the eddy covariance flux tower setup from his perch on the tower's base scaffolding.
The tower is 50 m (160 ft) tall in order to accurately capture the activity of the mixed conifer forest. Among the items around the base of this tower are a infrared gas analyzer (IRGA) for gas samples, a gas tank with reference CO2, a storage chest, and solar panels. The elevated scaffolding, where Roger Bales is sitting, allows for easier access when snows are high.
Roger Bales (red hat) and Matt Meadows (SSCZO field hydrolgist, green hat in background) explain one of the most heavily instrumented sites - a white fir (Abies concolor) known as "Critical Zone Tree-1".
Carolyn Hunsaker explains instrumentation at one of the Providence streams. Two flumes track stream discharge, and below those flumes, a settling basin captures sediment.
This July 2011 outing allowed stakeholders and the public to see the cutting-edge research being conducted at the site. Five congressional staff and 2 state senate staff members attended, along with representatives of several local organizations.
With SSCZO researchers Roger Bales, Matt Meadows and Carolyn Hunsaker, attendees toured the Providence flux tower, Critical Zone Tree-1, and meadow instrumentation, all located in subcatchment P301.
24 Oct 2018 - Meet forest ecologist Jeff Lauder! Lauder's research focuses on Sierra Nevada Conifers and how they have been responding to stress during drought!
17 Jan 2018 - Recent activities and findings, funding opportunities, upcoming events, and other updates
17 Jan 2018 - Dr. Roger Bales's Nye Lecture, "Making up for lost snow: lessons from a warming Sierra Nevada", is now available to watch online.
06 Nov 2017 - By Michelle Gilmore and Leigh Bernacchi Ever wonder how we know what we know about water? Twenty-five intrepid water and forest managers,...
30 Oct 2017 - Water Resources Research published a new special collection in September 2017 featuring concentration-discharge research from multiple CZOs.