Table 2 Summary of mean biomass and regional intraspecific temporal biomass-occupancy relationships (for the entire Dutch Wadden Sea). Mean values for occupancy can be found in Table 1. Yearly variance in biomass (log10 g m−2) was modelled as a linear function of occupancy (logit of the fraction of occupied sampling sites). The estimated intercepts, slopes, coefficients of determination (R2, %), and the back-transformed Root Mean Squared Error (RMSEbt, %) are provided. Values in brackets are standard errors.
From: Presence-absence of marine macrozoobenthos does not generally predict abundance and biomass
Species | Biomass (g m−2) | intercept | slope | R2 (%) | RMSEbt (%) | |
|---|---|---|---|---|---|---|
Bivalves | Abra tenuis | 0.03 (0) | 0.07 (0.92) | 0.05 (0.26) | 1 | 69 |
Cerastoderma edule | 8.51 (0.99) | 1.28 (0.16) | −0.2 (0.16) | 21 | 42 | |
Ensis leei | 2.78 (0.3) | 0.18 (0.33) | −0.58 (0.16) | 69 | 34 | |
Limecola balthica | 1.4 (0.2) | 0.49 (0.01) | 0.15 (0.03) | 84 | 8 | |
Macomangulus tenuis | 0.02 (0.01) | 0.1 (0.42) | −0.02 (0.09) | 1 | 47 | |
Mya arenaria | 2.28 (1.25) | 0.93 (0.74) | −0.07 (0.32) | 1 | 226 | |
Mytilus edulis | 1.24 (0.09) | 0.37 (0.3) | −0.36 (0.09) | 74 | 21 | |
Scrobicularia plana | 0.28 (0.05) | 0.68 (0.37) | −0.07 (0.11) | 6 | 39 | |
Polychaetes | Arenicola marina | 2.5 (0.2) | 0.91 (0.06) | −0.02 (0.06) | 1 | 12 |
Hediste diversicolor | 1.01 (0.1) | 0.44 (0.12) | −0.02 (0.18) | 0 | 27 | |
Heteromastus filiformis | 0.1 (0.02) | 0.09 (0.16) | 0.42 (0.13) | 65 | 25 | |
Lanice conchilega | 0.97 (0.33) | 1.37 (0.42) | 0.58 (0.27) | 44 | 114 | |
Marenzelleria viridis | 0.31 (0.05) | −0.09 (0.1) | −0.1 (0.1) | 15 | 43 | |
Nephtys hombergii | 0.18 (0.02) | 0.09 (0.09) | −0.03 (0.04) | 9 | 11 | |
Scoloplos armiger | 0.96 (0.16) | −0.11 (0.07) | 0.52 (0.12) | 75 | 25 | |
Gastropod | Peringia ulvae | 0.16 (0.03) | 0.04 (0.08) | 0.08 (0.05) | 29 | 19 |
