Fish mortality by impingement on the cooling-water intake screens of Britain's largest direct-cooled power station.
An estimated 5.66 x 10(7) fish (summed quarterly 95% confidence intervals: 3.01 x 10(7)-1.07 x 10(8)) weighing 258.4 t (143.2-467.9 t) were killed on the cooling-water intake screens of the 2400 MW Longannet Power Station (Forth estuary) in January 1999--December 2000. Abundance and number of species (40) collected were close to predictions for a power station of this size and latitude. Potential losses of equivalent adult whiting (Merlangius merlangus), cod (Gadus morhua), and plaice (Pleuronectes platessa) through deaths of juveniles were estimated at 353.1 t (208.0-603.2 t) worth approximately euro 429,266 (euro 246,592-752,765) in 1999--2000. Fish catch-per-trawl in the estuary was generally not noticeably greater during a year of low water withdrawal (coal miners' strike of 1984--1985) when compared to other years from 1982 to 2001, except for gobies (Pomatoschistus spp.). A fish-return system is being tested at Longannet to reduce mortality.
Greenwood
M F D
MF
Department of Biological Sciences, University of Stirling, Stirling, FK9 4LA, UK. Marin.Greenwood@MyFWC.com
D000818:Animals; D018533:Biomass; D005399:Fishes / Q000502:physiology*; D016014:Linear Models; D011156:Population Density; D011210:Power Plants / Q000379:methods / Q000706:statistics & numerical data; D016019:Survival Analysis; D013997:Time Factors