| BigLink | Biosphere-Geosphere interactions: Linking climate change, weathering, soil formation and ecosystem evolution |  | Request membership |
| Bonanza Creek LTER | Carbon in the Critical Zone: Biogeochemical Fluxes and Microbial Communities in a Moisture Gradient and Moisture Manipulation at Bonanza Creek LTER |  | Request membership |
| Boulder Creek Critical Zone Observatory | Weathered profile development in a rocky |  | Request membership |
| Calhoun Soil-Ecosystem Research and Education Experiment | Long-term soil-ecosystem experiments (LTSEs) demonstrate how & why humanity is changing Earth's Critical Zone on decade's time scales. |  | Join |
| ChemXSeer | ChemXSeer is for environmental chemists to integrate the scientific literature with experimental, analytical and simulation result datasets. |  | Request membership |
| Clear Creek Observatory | Clear Creek River Basin |  | Request membership |
| CZEN - NSF | A private group | | Invite only |
| CZEN field trip/meeting at Goldschmidt 08 | A social meeting and field trip for CZEN members at Goldschmidt 08 | | Request membership |
| CZEN organizational activity | CZEN organizational activity | | Request membership |
| CZO Weathering Group | CZO Weathering Group- | | Invite only |
| CZO-steering committee | CZO-steering committee | | Request membership |
| Data and information systems workshop - Fall 2007 - Planning group | This group is planning A Fall 2007 workshop to discuss the ongoing collection and compilation of data for CZEN. |  | Request membership |
| EarthChem | EarthChem is a community-driven effort to facilitate the preservation, discovery, access and visualization of the widest and richest geochemical data. |  | Request membership |
| Elements | Element Manuscript Review |  | Invite only |
| Funding | Funding for CZEN.org |  | Request membership |
| Guadeloupe | Monitoring of soil solution, stream water chemistry and physical denudation |  | Request membership |
| Hawaii | Linking Hydrology and Deep Weathering |  | Join |
| Heather Buss | Individual group |  | Request membership |
| Help | Help for the average/new user |  | Request membership |
| Illinois River Basin | Illinois River Basin |  | Request membership |
| Integrated Monitoring in Sweden | Monitoring of Coniferous forest sites on till soils in protected areas | | Request membership |
| International Partners | International Partners working in a watershed or drainage basin who demonstrate willingness to post and share data |  | Request membership |
| International student fellows | CZEN - International student fellows | | Join |
| IPY soil incubations and radiocarbon | data and methods pertaining to the incubation of boreal and arctic soils |  | Request membership |
| Kruger National Park | Conservation area within the savanna biome | | Request membership |
| Listserve - CZEN | Open subscription and Open discussions |  | Join |
| LTSE | GLOBAL INVENTORY OF Long-Term Soil-Ecosystem Studies |  | Request membership |
| Luquillo | The Luquillo Critical Zone Observatory (LCZO) will be located in Northeastern Puerto Rico in the USFS Luquillo Experimental Forest and at the USGS WEB |  | Request membership |
| Marcellus shale | Marcellus shale |  | Request membership |
| Merced River Chronosequence | A Staircase Through Time and a Window into Human Disturbance of Biogeochemistry |  | Request membership |
| Methodologies to be implemented across sites | This group contains the protocols to be implented across all CZEN sites. | | Join |
| Micro Macro Ecology | Microscale approaches to macroscale issues in ecology. |  | Request membership |
| Muskingum Watershed | Muskingum Watershed |  | Request membership |
| Nevada's Eco-Hydro-Climatic Observatories (NEHCO) | Valley-to-peak transects for the analysis of environmental responses to climate change in the Great Basin | | Request membership |
| NorthEastern Soil Monitoring Cooperative | NorthEastern Soil Monitoring Cooperative |  | Request membership |
| Panola Mountain | Panola Mountain |  | Request membership |
| SDEG - Sonoran Desert Environmental Gradient | Saguaro National Park |  | Request membership |
| Soil Moisture Sensor Calibration | The purpose of this group is to share calibration methods and data in order to improve the quality of soil moisture data. |  | Join |
| Southern Sierra Critical Zone Observatory | Kings River Experimental Watersheds - P300 series nested catchments |  | Request membership |
| Steering Committee | Steering Committee of CZEN.org |  | Closed |
| Strengbach catchment - OHGE | Granitic forested catchment in North East of France, monitored since 1986 | | Request membership |
| Susan Brantley Spring Seminar | Susan Brantley Spring Seminar |  | Request membership |
| Susquehanna Shale Hills Critical Zone Observatory | Susquehanna Shale Hills |  | Request membership |
| Susquehanna Shale Hills Transect | A transect of sites on Shale along the east coast of the US | | Request membership |
