Methods
Information was assembled from peer-reviewed manuscripts,
unpublished reports, student theses, the Aquatic Data Management
System (ADAMAS) database (CDOW 2000), field data sheets, correspondence,
and other paper records in agency offices. Where data were in
conflict, original sources (typically field data sheets or hatchery
logs) were considered the most accurate, though these were not
always obtainable. Otherwise, conflicts were resolved by using
the most frequently reported data. All entries were checked against
the source data at least twice.
For each greenback cutthroat trout population, we noted (1)
the characteristics of recovery waters and dates of population
discovery or introduction; (2) fish abundance estimates; (3)
analyses of genetic purity; (4) salmonid fauna, removal efforts,
and reinvasions; and (5) dates, sources, and numbers of fish
used to establish populations. For each hatchery, we noted (1)
sources and numbers of fish delivered to them; (2) sources, sex
ratios, and production of fish used to create particular year
classes; and (3) dates, numbers, and sizes of hatchery fish shipped
to establish wild populations or supplement other hatchery stocks.
Results were presented separately for the Arkansas and South
Platte river basins because these stocks may be considered separately
for delisting.