Table 3 Number of Kalyptorhynchia species in 15 sites of the northern Wadden Sea tidal inlets studied 1982-84 and 2018 classified with habitat types, and similarity of species composition between habitat types
From: Analysing long-term change in small benthos: geomorphological dynamics affects method selection
Sediment type | Depth range | No of sites | Number of Kalyptorhynchia species | Similarity | |||||
|---|---|---|---|---|---|---|---|---|---|
1982–1984 | 2018 | 1982–1984 total | 2018 total | Combined total | present in both periods | Sørensen’s similarity | Jaccard’s index | ||
Fine sand | > 10 m | 3 | 3 | 22 | 8 | 24 | 6 | 40 | 25 |
> 10 m | 2 | 1 | 6 | 12 | 17 | 1 | 11 | 6 | |
Total | 5 | 4 | 26 | 17 | 33 | 10 | 47 | 30 | |
Medium sand | > 10 m | 5 | 4 | 30 | 17 | 41 | 6 | 26 | 15 |
> 10 m | 3 | 4 | 13 | 10 | 19 | 4 | 35 | 21 | |
Total | 8 | 8 | 35 | 25 | 49 | 11 | 37 | 22 | |
Coarse sand | > 10 m | 1 | 0 | 2 | 0 | 2 | 0 | 0 | 0 |
> 10 m | 1 | 3 | 4 | 0 | 4 | 0 | 0 | 0 | |
Total | 2 | 3 | 6 | 0 | 6 | 0 | 0 | 0 | |
All types | Total | 15 | 15 | 53 | 34 | 68 | 21 | 47 | 31 |