| Metric name |
Description of metric |
| Trophic structure of catch |
| Food chain length |
Number of trophic steps from primary production to top piscivore |
| Loss of functional groups |
List of functional groups lost over time |
| Within functional group diversity (at present) |
For each historical functional group, list species with nominally redundant functions OR number of redundant species in each functional group |
| Non-indigenous species invasion |
Rate of establishment of exotic species or new species over time (per decade for last century) |
| Exploited species |
| Fisheries Intrinsic stability / variability |
Interannual variability in catches of exploited species (by species) |
| Size range |
Size range and mean size for exploited or surveyed species |
| Mean age at harvest |
Mean age of catch (exploited species only) |
| Age at maturity |
Age at maturity (exploited species only) |
| Trophic structure of catch |
Catch by trophic level and change over time |
| Stocking |
List of species stocked, numbers of each stocked, and trophic level |
| Habitat alterations |
| Nutrient trends/P |
Annual mean concentrations of TP |
| Nutrient trends/N |
Annual mean concentrations of TN |
| Nutrient trends/Si |
Annual mean concentrations of dissolved silica |
| Chlorophyll range (phytoplankton) |
Range (max to min) of phytoplankton abundance in growing season |
| Chlorophyll mean (phytoplankton) |
Mean concentration for phytoplankton growing season for TN, TP and Si |
| Cyanobacterial blooms |
Present/absent and when change occurred; list annual trend data if available |
| Harmful algal species |
Present/absent and when change occurred; list annual trend data if available |
| Transparency |
Measures of visibility including secchi depth, light extinction, turbidity |
| Oxygen demand |
Hypolimnetic oxygen demand (or sediment oxygend demand) |
| Contaminants of concern |
List of contaminants in species of concern for human and ecosystem health |
| Fish diseases of concern |
List of fish diseases of concern by species |
| Habitat Loss |
Change in habitat availability (for exploited species or species of interest) |
| Catchment (watershed) Change |
| Population pressure |
Human population in watershed as density in land catchment and as density per lake area |
| Urbanization |
Population trend in cities within watershed |
| Economic Activity |
Gross domestic product of catchment populations |
