Effects of three commercial harvesting Effects of three commercial harvesting methods on mussel beds effectsofthreeco00spar Year: 1983 o CD Ai CO CD CO ct: CO LU > 100 80 60 ^0 20-] * Commercial Diver does not use this target criterion CJ > LjJ CD CD (=3 CD CD h- CO o Ai CO Qi t\ Ai Od 1001 80 60 ^0 20 BAR DREDGE DIVER Figure 4. Sampling or harvest efficiency of gear. In the top graph, the target is all live mussels. In the middle graph, the target is all mussels >6 cm in height (legal criterion), and the target in the bottom graph is washboards >9 cm and three

---

Effects of three commercial harvesting Effects of three commercial harvesting methods on mussel beds effectsofthreeco00spar Year: 1983 o CD Ai CO CD CO ct: CO LU > 100 80 60 ^0 20-] * Commercial Diver does not use this target criterion CJ > LjJ CD CD (=3 CD CD h- CO o Ai CO Qi t\ Ai Od 1001 80 60 ^0 20 BAR DREDGE DIVER Figure 4. Sampling or harvest efficiency of gear. In the top graph, the target is all live mussels. In the middle graph, the target is all mussels >6 cm in height (legal criterion), and the target in the bottom graph is washboards >9 cm and three ridge and a few other species >7 cm (shell buyers' criteria).

---

Size: 1069px × 1871px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage