Where does catch collide?

In fisheries science the catch is the quantity of fish or other organisms removed from a population, usually by weight or number over a defined time and area, and it is the central observable of stock assessment. Divided by the fishing effort that produced it, it becomes catch per unit effort (CPUE), a proxy for abundance that managers track to judge whether a stock is being fished sustainably. Hilborn and Walters' Quantitative fisheries stock assessment treats how catch and CPUE are modelled and where the abundance proxy misleads, and Maunder and colleagues set out how CPUE series must be standardised before they can be read as a status signal. The referent is a harvested quantity and its effort-normalised index, and it has nothing to do with the start of a rowing stroke or a sung round beyond the shared bare word.[1][2]

Unit

Mass or number of organisms removed, and catch per unit of fishing effort

Recovery means

Not applicable

Measured by

Recorded from landings and logbooks as total catch, then standardised into catch-per-unit-effort series as an abundance index

In music a catch is a type of round, an unaccompanied part-song for several male voices that enter one after another on the same melody, flourishing in seventeenth- and eighteenth-century England. Its name reflects both the way each singer must "catch" the tune at the right entry and the way the interleaved words were often arranged so that, once overlapped, they produced a pun or bawdy joke audible only in performance. Robins' Catch and glee culture in eighteenth-century England documents the catch clubs and the repertoire as a social and musical form. The referent is a vocal genre and its performance practice, unrelated to a rowing stroke or a fisheries harvest.[3]

Unit

Not applicable

Recovery means

Not applicable

Measured by

Not applicable