Catch Per Unit of Effort (CPUE) Data
Much data are collected during the course of managing salmon fisheries or operating
stock assessment and research in AYK. We have attempted to categorize related data
into “types” allowing them to reside in separate databases which can accommodate
their different data structure. Not all data “types” have been added to our DBMS.
Currently we include ASL, CPUE, Escapement Counts, Harvest, and Survey Counts data.
This is in contrast to data relating to radio telemetry locations of salmon, environmental
measurements (temperature, water depth, velocity, etc.) or juvenile salmon data
which could be added at a later time.
The Catch per Unit of Effort (CPUE) data type consists of catches
of salmon (Oncorhynchus sp.) collected with standardized gear and fishing procedures by ADF&G employees or other cooperating groups. Explicit location, time of day (if less than continuous) and gear dimensions used to capture salmon are also collected.
CPUE are calculated from these data. Test fisheries generally collect CPUE data
to monitor salmon migrations and relative abundance. CPUE data are also collected
as a secondary objective by other project types. For example CPUE data are collected
as the result of fishing to collect salmon to tag (Capture/Recapture projects).
Fish wheels, set gillnets and drift gillnets have been used in AYK. CPUE has been expressed for drift gillnets as number of salmon per 100 fathom hours fished. CPUE
for set gillnets has been expressed as catch per day.
Only CPUE data from Norton Sound and Kotzebue test fisheries currently reside in the AYK salmon DBMS. These data represent test fish projects operated in the mouth of the Unalakleet River since 1981 and the lower Kobuk River since 1993. Other AYK CPUE data will be included, as time allows.
Search CPUE data
