This is intended to be a one-screen per taxon (species or subspecies levels only) overview of the state of the animal population, including key metrics on genetic and demographics, and indicators of the underlying data quality.
There are four quadrants:
The upper left graph plots 6 “basic vital rates” (births, deaths, acquisitions from non-ISIS member sources, dispositions to non-ISIS holders, acquisitions directly from the wild, releases directly to the wild) – each is a count of the events of that kind, by year. For individuals (not necessarily for groups), the net result of these basic rates should explain the observed changes in census at lower left, Note that acquisitions from the wild and releases to the wild may be undercounted, as those transactions may have been entered as to/from wildlife agencies, etc., rather than directly from/to the wild. ISIS current membership is used for the entire time period. Various events in groups may go unrecorded, so group data recorded vital rates may not total to the recorded changes in the census.
The lower left graph plots two variables – the living population size (individuals plus groups) on ISIS by year (census as of today’s date each year), and the number of institutions physically holding the animals on those dates. ISIS’ current membership is used for the entire time period to hold the institutional-scope constant (not all current members may have entered data for 20 years ago, so some positive census trend might be caused by recent years being more comprehensive).
The upper right graph is a smaller version of the Age Distribution (Pyramid) Report. Occasionally a data entry error generates an apparently very long-lived animal, stretching the vertical axis.
The lower right quadrant presents calculated metrics on the data available for the population – some measures provide demographic information, some genetic info, and some are indicators of the data quality on ISIS for this taxon. Due to potential missing institutional information (not in ISIS) and historical data weaknesses, some of these calculated parameters may represent a lower bound. More Contributing Founders, for example, may be identified if more complete histories and pedigrees are filled in for today’s living animal population.