Table 4 Number of Kalyptorhynchia species in habitat types of the northern Wadden Sea tidal inlets studied 1982–1984 and 2018–2019, and similarity of species composition between sites
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 | 2015–2019 | 1982–1984 total | 2015–2019 total | Combined total | Present in both periods | Sørensen’s similarity (%) | Jaccard’s index (%) | ||
Fine sand | > 10 m | 6 | 56 | 40 | 29 | 52 | 17 | 46 | 33 |
> 10 m | 4 | 12 | 9 | 19 | 25 | 3 | 40 | 12 | |
Total | 10 | 68 | 45 | 35 | 61 | 19 | 46 | 31 | |
Medium sand | > 10 m | 18 | 29 | 53 | 51 | 73 | 31 | 54 | 42 |
> 10 m | 8 | 4 | 26 | 10 | 32 | 4 | 24 | 13 | |
Total | 26 | 33 | 58 | 54 | 74 | 38 | 57 | 51 | |
Coarse sand | > 10 m | 1 | 12 | 2 | 4 | 6 | 0 | 0 | 0 |
> 10 m | 3 | 6 | 6 | 1 | 7 | 0 | 0 | 0 | |
Total | 4 | 18 | 8 | 5 | 12 | 1 | 20 | 8 | |
All types | Total | 40 | 119 | 73 | 63 | 88 | 48 | 57 | 55 |