Institute of Soil Ecology
   Overall research goal is the protection of soils in terms of their function as a site for plants and as a formative element of the landscape (National Research Center for Environment and Health, Germany).
   http://www.gsf.de/Forschung/Institute/englisch/iboe_en.phtml

KSU Soil Microbial Ecology Laboratory
   Research group at Kansas State University, USA.
   http://www.oznet.ksu.edu/pr_sme/

Laboratory of Soil Ecology and Microbiology
   Research projects and publications (University of Rhode Island, USA).
   http://www.uri.edu/cels/nrs/seml/

Salinity and Plant Tolerance
   A publication from the Utah State University describing soil salinity, its causes, ways of measuring and salt tolerances for many common plants. July 1997.
   http://extension.usu.edu/publica/agpubs/salini.htm

Soil Biodiversity and Ecosystem Functioning
   Research projects, data and links from The Natural Resource Ecology Laboratory (NREL,) Colorado State University (CSU).
   http://www.nrel.colostate.edu/soil/

Soil Ecology and Restoration Group
   Primary focus is on soils and below-ground processes in arid and semiarid ecosystems with emphasis on microbial ecology and plant-microorganism relationships (San Diego State University, University of California Riverside, USA).
   http://www.serg.sdsu.edu/SERG/

Soil Organisms and The Nitrogen Cycle
   Educational site explaining the role of soil organisms and the nitrogen cycle.
   http://www.soils.agri.umn.edu/academics/classes/soil2125/doc/slab9org.htm

Soil and Ecosystem Ecology
   Research projects and publications (Lancaster University, UK).
   http://bssv01.lancs.ac.uk/bs/research/soilecol/

Soils Zoo
   Descriptions of soil microfauna and mesofauna.
   http://www.waite.adelaide.edu.au/school/Soil/zoo.html

The Soil Ecology Society
   An international organization of researchers, students, environmental professionals and others interested in the advancement and promotion of soil biology and ecology.
   http://www.wcsu.ctstateu.edu/ses/ses.html