ARCHIVED CONTENT: In December 2020, the CZO program was succeeded by the Critical Zone Collaborative Network (CZ Net) ×



CZ colleagues: Please contact us about proposals for NSF’s CZ Collaborative Network, due 02 Dec 2019

08 Jul 2019 - CZO will end Nov 2020, succeeded by the “CZ Collaborative Network”. Let’s explore how the CZ community can build upon the CZOs via new NSF proposals.


Teachers Data Jam Workshop

22 Jan 2018 - On Saturday, January 13, we successfully held our third Teacher Data Jam Workshop of the Luquillo LTER Schoolyard Program. On this occasion,...


Water Resources Research Special Collection: Concentration-discharge relations in the critical zone

30 Oct 2017 - Water Resources Research published a new special collection in September 2017 featuring concentration-discharge research from multiple CZOs.


Data Jam Teacher Workshop held November 18th

30 Nov 2016 - On November 18, 2016, twenty science teachers from the Puerto Rico private and public school sectors participated in a six-hour Data Jam Workshop.

Global warming experiment turns up the heat in Puerto Rican forest

27 Oct 2016 - A pioneering research project is aiming to determine how forests in the Amazon, the Congo and elsewhere in the tropics will reacting to rising tempera


EOS: Taking the Pulse of the Earth’s Surface Systems

04 Dec 2015 - Taking the Pulse of the Earth's Surface Systems In September of 2014, Laurel Larsen (UC Berkley), Elizabeth Hajek (Penn State), and others...

Pebbles on Mars Likely Traveled Tens of Miles Down a Riverbed, Penn Study Finds

14 Oct 2015 - Reconstructing the transport history of pebbles on Mars.

Deep but not dead: how tropical subsoil microbes could affect the carbon cycle

29 Jan 2015 - Deep but not dead: how tropical subsoil microbes could affect the carbon cycle By Madeleine Stone, University of Pennsylvania It’s no exaggeration...


Luquillo CZO at AGU

11 Dec 2014 - A number of posters and presentations related to work at the Luquillo-CZO will be at AGU From December 15th to December 19th.

Using a CZO network to explore the architecture, dynamics and evolution of the Critical Zone

03 Nov 2014 - The US CZO National Office has organized a webinar on December 8, 2014 at 11AM - 12:30 PM ET.

Luquillo CZO posters from 2014 all hands meeting available on figshare

09 Oct 2014 - Three Luquillo CZO posters presented at the Southern Seirra CZO all hands meeting are now available on figshare.   Gadgets and Experimental...

Stream Monitoring During 2014 Hurricane Season in Puerto Rico

11 Sep 2014 - Below are presented some graphs and links to data of stream water monitoring during fthe 2014 hurricane season in Puerto Rico.

Report On: Stable Isotope (δ18O and δ2H) Data for Precipitation, Stream Water, and Groundwater in PR

25 Aug 2014 - Stable Isotope (δ18O and δ2H) Data for Precipitation, Stream Water, and Groundwater in Puerto Rico Stable isotope data can be used to...

2014 All Hands Meeting

24 Apr 2014 - Information for the 2014 All Hands Meeting for the CZO Network on 21-14 September, including registration information and abstract submission.

Powell Center working group to meet on Tropical Forest Responses to Global Warming

03 Apr 2014 - A Powell Center working group has been formed and will meet the week of April 26th at the John Wesley Powell Center for Analysis and...

2014 CZOData Cyber-Seminar Spring Series

06 Mar 2014 - Presentations describing the Integrated CZO Data system and how to use it; for interested CZO investigators, students & staff.


Geochemist’s workbench conference to be hosted at UPenn

27 Nov 2013 - For more information and to register please visit the workshops webpage The workshops will be presented by...

Sorting out the effects of storms on landscapes in Luquillo

24 May 2013 - {embed1} The slow erosion of mountains is driven by the cumulative effects of innumerable storms. There are few places more stormy than the Luquillo...

New data set on stream channel response to urbanization

17 Jan 2013 - A new data set on stream channel response to urbanization in the humid tropical region of NE Puerto Rico has been published on the LCZO data...


Flickr hosted historical photos from around Puerto Rico are available!

10 Oct 2012 - The below links contain numerous historical photos of Puerto Rico, these provide some great historical context about the evolution of the landscape...


The new LCZO Data Repository is now live.

17 Feb 2010 - You can view and download data files, post comments, post data documentation forms, post papers and add site detail. Some of the above requires...

NSF Biocomplexity Project resources for Northestern Puerto Rico are available online

01 Jan 2010 - Web page at Colorado State University is a good source for information regarding the interaction of River and Road networks. ...

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