Table 1.
Yearly counts of completed questionnaires.
Table 2.
SS Thistlegorm dive parameters with significant (P < 0.05) sequential DistLM test to community structure by year for abundance and presence/absence data.
PY as date (expressed as the percentage of year), MD as maximum depth, AD as depth at most time spent, T as temperature, RTD as dive duration, and FD as hour (expressed as percentage of day).
Fig 1.
a) MDS plot of the SS Thistlegorm taxa abundance community structure over 8 years. Each point represents an individual questionnaire while the different shapes/colors indicate the different years. b) Centroidal MDS of SS Thistlegorm taxa abundance community structure variation over 8 years with overlayed vectors of aggregated best taxa and the indicated trajectories from 2007–2014. Each point represents the central location of the groups “Year”. The green circles surround the groups resulting from the hierarchical cluster analysis.
Fig 2.
a) MDS plot of the SS Thistlegorm taxa presence/absence community structure over 8 years. Each point represents an individual questionnaire while the different shapes/colors indicate the different years. b) Centroidal MDS of SS Thistlegorm taxa presence/absence community structure variation over 8 years with overlayed vectors of aggregated best taxa and the indicated trajectories from 2007–2014. Each point represents the central location of the groups “Year”. The green circles surround the groups resulting from the hierarchical cluster analysis.
Table 3.
Yearly relative abundance values of BVSTEP best species subset from centroid aggregated taxa abundance data.
Table 4.
Yearly sighting frequencies of BVSTEP best species subset from centroid aggregated taxa p/a data.