- Bioindicators of Aquatic Ecosystem Stress - Biological indicators have been developed and applied at field sites in the eastern U.S. to assess the effects that environmental stressors such as contaminants have on the health of aquatic organisms. (Environmental Sciences Division at Oak Ridge National Laboratory.)
- Biological Markers of Water Pollution - A review of the literature on the use of enzyme induction in aquatic organisms to measure environmental pollution.
- Potholes and Vernal Pools as Potential Indicator Systems - A technical article by Tim B. Graham about climate change and ephemeral pool ecosystems, with photographs.
- Research Group of Experimental Zooplankton Ecology - A research group in Finland; studies on zooplankton, cyanobacteria, fish and blue mussels in the Baltic Sea -- staff, projects, publications.
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