Table 2 Mytilus edulis. Published estimates of mean annual somatic soft-parts production (P, in kg AFDM m−2 a−1) with estimates of annual mean biomass (B, in kg AFDM m−2) and P/B (a−1). (a) Within natural intertidal mussel beds of stated size (in 104 m2), and (b) for more extensive coastal areas including mussel beds and/or scattered mussels. Length of observation period indicated (years). To facilitate comparisons, some conversion factors were applied (1 g DM = 0.9 g AFDM, 1 g C = 2 g AFDM)
Country and area | Period length (years) | Area size (104 m2) | Estimates of | Reference | ||
|---|---|---|---|---|---|---|
P | B | P/B | ||||
(a) Mussel beds | ||||||
Scotland | ||||||
Ythan estuary | 1 | ∼15 | 0.3 | 0.2 | 1.3 | Milne and Dunnet (1972) |
England | ||||||
Morecambe Bay-E | 3 | 0.12 | 2.2 | 0.9 | 2.4 | Dare (1976) |
Morecambe Bay-W | 2 | 0.25 | 0.7 | 0.3 | 2.3 | Dare (1976) |
The Netherlands | ||||||
Eastern Scheldt | 1 | 0.50 | 0.16 | 0.31 | 0.5 | Craeymeersch et al. (1986) |
Germany | ||||||
Königshafen, Sylt | 1 | 48 | 0.44 | 1.21 | 0.4 | Asmus (1987) |
Denmark | ||||||
Hobo Dyb, Langli | 1 | 0.28 | 0.68 | 0.95 | 0.7 | Faldborg et al. (1994) |
The Netherlands | ||||||
Balgzand | 6 | 0.11 | 0.57 | 0.46 | 1.3 | Present paper |
(b) Extensive areas with local mussel beds | ||||||
Canada | ||||||
Petpeswick Inlet | 1 | 180 | 0.018 | 0.014 | 1.3 | Burke and Mann (1974) |
1 | 80 | 0.003 | 0.002 | 1.3 | Burke and Mann (1974) | |
England | ||||||
Southampton Water | 2 | 60 | 0.004 | 0.004 | 1.0 | Hibbert (1976) |
Scotland | ||||||
Ythan estuary | 185 | 0.022 | 0.022 | 1.0 | Baird and Milne (1981) | |
USA | ||||||
Delaware Bay | 2 | >105 | 0.003 | 0.0005 | 6.2 | Howe et al. (1988) |
Denmark | ||||||
Ho Bight | 1 | 103 | 0.042 | 0.101 | 0.4 | Munch-Petersen and Kristensen (2001) |
The Netherlands | ||||||
Balgzand | 26 | 5.103 | 0.006 | 0.003 | 1.7 | Present paper |