Table 1.
Observed abundances and significant results of Dutilleul periodogram analysis of the hydrothermal vent fauna at the Grotto edifice (2196 m depth). The data were obtained by visual analysis of the video images recorded by TEMPO-mini during a whole year (once a day) and during three selected months (six times a day).
| annual analysis | monthly analyses |
|||||||
|---|---|---|---|---|---|---|---|---|
| 20 June 2013 to 20 June 2014 |
June 2014 |
November 2014 |
December 2014 |
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| taxa | min–max (mean ± s.d.) | main periods | min–max (mean ± s.d.) | main periods | min–max (mean ± s.d.) | main periods | min–max (mean ± s.d.) | main periods |
| Sericosura sp. | 2–31 (14.7 ± 5.85) | 14.89-d | 14–46 (24.32 ± 5.62) | 12.39 h | 15–48 (26.75 ± 5.57) | 4.07-d 12.43 h |
9–37 (23.65 ± 5.36) | 4.24-d 12.42 h |
| Polynoidae | 1–34 (8.57 ± 3.53) | — | 4–20 (10.81 ± 3.47) | — | 7–24 (14.68 ± 3.6) | 16.03-h | 7–25 (14.36 ± 3.86) | 12.39 h |