Note to CZ colleagues

The CZO program will end November 2020, succeeded by a new NSF-supported "Critical Zone Collaborative Network”. Learn more via NSF's call for proposals (December 02, 2019 deadline).

CZO works closely with CZEN

CZEN, the Critical Zone Exploration Network is an international community of people and field sites investigating processes in the Critical Zone: CZEN Info | Jobs & Opportunities | Community Groups | Field Sites (Site Seeker)



AGU 2020: Sessions related to CZ Science

30 Jun 2020 (National, Boulder, Calhoun, Catalina-Jemez, Eel, IML, Luquillo, Reynolds, Shale Hills, Sierra) - Submit your abstract for the 2020 AGU Fall Meeting by 29 July 2020 at 11:59 p.m., ET.


2020 CZO Webinar Series on Sustainability

17 Jun 2020 (National, Boulder, Calhoun, Catalina-Jemez, Eel, IML, Luquillo, Reynolds, Shale Hills, Sierra) - The U.S. CZO Program presents the 2020 CZO Webinar Series to highlight research findings of CZOs and discuss the impact and relevancy of their...


Belmont Forum Announces Collaborative Research Call on Soils

20 Apr 2020 (National, Boulder, Calhoun, Catalina-Jemez, Eel, IML, Luquillo, Reynolds, Shale Hills, Sierra) - The Belmont Forum is pleased to announce the launch of a collaborative research call on the theme: Towards Sustainability of Soils and Groundwater...


Carbonate Critical Zone Research Coordination Network to hold field workshop to Shale Hills CZO

04 Mar 2020 (National, Shale Hills) - Applications are being accepted for the workshop to be held August 2-5, 2020 at Temple University in Philadelphia.


CZOs at AGU 2019

19 Nov 2019 (National, Boulder, Calhoun, Catalina-Jemez, Eel, IML, Luquillo, Reynolds, Shale Hills, Sierra) - A list of CZ-related sessions, abstracts and events at the 2019 AGU Fall Meeting.

Paul Schroeder featured on NPR’s Pulse of the Planet

05 Jun 2020 (Calhoun) - Four 2 minute pieces featuring Paul Schroeder talking about clay were aired on NPR's Pulse of the Planet in February 2020. Please see the links...

Geology of the Calhoun CZO

05 Jun 2020 (Calhoun) - Barrett "Bear" Jordan's MS thesis on the geology of the Calhoun is now posted!  Bear's advisor Paul Schroeder says this is "a bit more...

K-12 Activity: Humans and Soil Change

11 Jan 2020 (National, Calhoun) - The activity familiarizes students with some of the environmental and human factors that contribute to accelerated rates of soil erosion.


Job Opening: Professor & Department Head of Ecosystem Science and Management at Penn State

20 Nov 2019 (National, Shale Hills) - The Department of Ecosystem Science and Management at The Pennsylvania State University invites nominations and applications for the position of...

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Where is the bottom of a watershed?. Condon L.E., Markovich K.H., Kelleher C.A., McDonnell J.J., Ferguson G., and McIntosh J.C. (2020): Water Resources Research 56(3): e2019WR026010 (Catalina-Jemez)


Quantification of Mixed-Layer Clays in Multiple Saturation States Using NEWMOD2: Implications for the Potassium Uplift Hypothesis in the SE United States. Austin, J.C., Richter, D.D. & Schroeder, P.A. (2020): Clays and Clay Minerals (Calhoun)


Digging deeper: what the critical zone perspective adds to the study of plant ecophysiology. Dawson, T.E., Hahm, W.J., & Crutchfield-Peters, K. (2020): New Phytologist 226 (3): 666-671 (Eel)


Temporal dynamics of migration‐linked genetic variation are driven by streamflows and riverscape permeability. Kelson, S.J., Miller, M.R., Thompson, T.Q., O'Rourke, S.M. & Carlson, S.M. (2020): Molecular Ecology 29 (5): 870-885 (Eel)


Resolving Deep Critical Zone Architecture in Complex Volcanic Terrain. Moravec B.G., White A.M., Root R.A, Sanchez A., Olshansky Y., Paras B.K., Carr B., McIntosh J., Pelletier J.D., Rasmussen C., Holbrook W.S., Chorover J. (2020): Journal of Geophysical Research: Earth Surface 125(1): e2019JF005189 (Boulder, Catalina-Jemez, Eel, Reynolds, Sierra) Cross-CZO

Orographic controls on sub-daily rainfall statistics and flood frequency in the Colorado Front Range, USA . Rossi, MW, Anderson, RS, Anderson, SP (202o): Geophysical Research Letters 47, e2019GL085086, (Boulder)

Clades of huge phages from across Earth’s ecosystems. Al-Shayeb, B., Sachdeva, R., Chen, L., et al. (2020): Nature 578, 425–431 (Eel)

Combined use of radiocarbon and stable carbon isotopes for the source mixing model in a stream food web. Ishikawa, N.F., Finlay, J.C., Uno, H., Ogawa, N.O., Ohkouchi, N., Tayasu, T., Power, and Power, M.E. (2020): Limnology and Oceanography 1-14 (Eel)


Lifetime eurythermy by seasonally matched thermal performance of developmental stages in an annual aquatic insect. Uno, H. and Stillman, J.H. (2020): Oecologia 192: 647–656 (Eel)


Effect of source habitat spatial heterogeneity and species diversity on the temporal stability of aquatic‐to‐terrestrial subsidy by emerging aquatic insects. Uno, H., and Pneh, S. (2020): Ecological Research 35 (3): 474–481 (Eel)

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