Dataset: Images, porewater pressure, O2 data from lab experiments of Thalassinids in different sediment types; conducted at the Pacific Coastal Ecology Branch in Newport, OR in 2009 (Infaunal Hydraulics project)

This dataset includes results from experiments investigating the hydraulic activities of the thalassinidean ghost shrimp, Neotrypaea californiensis. Porewater pressure sensing, time-lapse photography, and planar optode imaging methods were used. Data are from three sediment types (mud, muddy sand, sand), with two shrimp per sediment type. MP4 movies and NetCDF files are avialable for download.

Quick-look files are MP4 movies with H264 codec incorporating simulateneous optode, visible light imagery and pressure records. The movie files provide a "quick look" of what exactly can be found in the NetCDF files. They contain time-lapse photography (side view or sometimes top-down view), oxygen images (in case of side view photography the oxygen images were flipped horizontally, because they were taken from the opposite side of the tanks) and porewater pressure data. The vertical red line marks the time point in the 20 min pressure record that corresponds to the images.

NetCDF optode files include optode imagery as time-resolved matrices, and a time series of pressure records. Oxygen images are matrices of percent air saturation values. 10 hour time series were split in four 2.5 hour blocks. All times are in unix format (seconds since 1970-01-01).

NetCDF Nikon files include visible light imagery as time-resolved matrices and a time series of pressure records. Nikon images are matrices of 24 bit RGB values. 10 hour time series were split in four 2.5 h blocks. Nikon images are matrices of 24 bit RGB values. All times are in unix format (seconds since 1970-01-01).

For details see:
Volkenborn N., Polerecky L., Wethey D.S., DeWitt T.H., Woodin S.A (2012) Hydraulic activities by ghost shrimp Neotrypaea californiensis induce oxic-anoxic oscillations in sediments. Marine Ecology Progress Series 455: 141-156. DOI: 10.3354/meps09645