Table 3 Average abundances of species contributing with high percentages to the dissimilarity between the disposal and reference areas (total dissimilarity in %, SIMPER analysis, fourth-root transformed grab-sample data, n=4)
From: The impact of harbour sludge disposal on benthic macrofauna communities in the Weser estuary
Survey | Taxon | Average abundance (Individuals/m2) | Contribution (%) | |
|---|---|---|---|---|
Disposal area | Reference area | |||
August 1996 | Total dissimilarity 63.4% | |||
Heteromastus filiformis | 126.7 | 34.5 | 12.8 | |
Polydora caeca | 0.0 | 422.5 | 12.2 | |
Marenzelleria viridis | 54.3 | 124.5 | 12.1 | |
October 1996 | Total dissimilarity 83.5% | |||
Heteromastus filiformis | 41.5 | 8.3 | 11.6 | |
Petricola pholadiformis | 0.0 | 53.3 | 6.9 | |
Bathyporeia pilosa | 0.0 | 100.0 | 6.7 | |
April 1997 | Total dissimilarity 74.9% | |||
Nepthys caeca | 0.8 | 23.3 | 10.7 | |
Heteromastus filiformis | 25.8 | 13.25 | 9.9 | |
Nereis virens | 4.0 | 0.0 | 8.6 | |