بهره وری کل عامل در شیلات گروندفیش انگلستان : 1964-1993

We develop estimates of total factor productivity (TFP) change in the New England groundfish fishery from 1964 to 1993, using a procedure similar to Squires' (1992, Rand J. Econom.23(2), 221–236) method, which extends standard TFP measurement by including the effect of fluctuations in stock abundance. The results indicate that TFP increased on average by 4.4% per year from 1964 to 1993. A higher average rate of increase occurred between 1964 and 1982, possibly due to new technologies (e.g., fishfinders). TFP declined at 0.33% annually from 1983 to 1993 due to stringent output and effort control measures.

Productivity change is an important indicator of an industry’s performance. Understanding productivity change is very important to fisheries management 31 since productivity allows fisheries to become more competitive but also places additional harvest pressure on fish stocks. Because it is not a measurable input or output and is virtually impossible to control, productivity growth adds considerable complication to fisheries management. Productivity measurement can provide useful information about effective fishing effort, as opposed to nominal measures of effort such as catch per day at sea

New England groundfish fisheries have experienced significant changes in management institutions and instruments during the past 30 years. Declines in several important commercial fish stocks have heightened public debate over fisheries management. We have developed estimates for total factor productivity ŽTFP. change in the New England groundfish fishery from 1964 to 1993, using a procedure similar to Squires’ 30 method, which extends standard TFP measurement by including the effect of changes in stock abundance.