Professional Societies

American Society of Limnology and Oceanography (ASLO)
Soil Science Society of America   (SSSA)
American Society of Agronomy (ASA)
American Geophysical Union (AGU)

Government Agencies

National Science Foundation (NSF)
U.S. Environmental Protection Agency(EPA)
National Oceanic and Atmospheric Administration (NOAA)
U.S. Department of Energy (DOE)
U.S. Geological Survey (USGS)
National Aeronautics and Space Administration (NASA)
International Atomic Energy Agency Isotope Hydrology (IAEA)

International Geosphere-biosphere Programme (IGBP)
Global Energy and Water Cycle Experiment (GEWEX)
Boreal Ecosystems Atmosphere Study (BOREAS)

American Mathematical Society
Mathematical Association of America
Mathscinet

Journals

Nature
Science