Seasonal monitoring of deep-sea megabenthos in Barkley Canyon cold seep by internet operated vehicle (IOV)
Fig 2
Visual counts time series (i.e. from 14th February 2013 to 14th April 2014) for the 7 most abundant megafaunal species and the particular case of the grooved tanner crab, as reported by crawler video-imaging.
Average values (the grey dots) have been reported in order to better highlight the occurrence of seasonal trends. From left to right and from top to bottom taxonomic units are: Rockfish (i.e. Sebastidae); Sablefish (Anoplopoma fimbria); Hagfish (Eptatretus stoutii); Buccinid (Neptunidae); Small crab; Grooved tanner crab (Chionnecetes tanneri); Ctenophore (Bolinopsis infundibulum); and finally, Scyphomedusa (Poralia rufescens). Horizontal blue dashed lines correspond to the Midline Estimated Statistic of Rhythm (MESOR) and horizontal blue lines identify significant seasonal increases visual counts increases. Blue asterisks correspond to a month with no data due technical problems.