Data from: Bayesian Network Analysis reveals resilience of Aurelia aurita to Irish Sea zooplankton regime shifts

The data for the contemporary jellyfish-zooplankton network were collected over a 2 week cruise in the Irish Sea on the RV Prince Madog in 2008. Zooplankton were collected using horizontally-towed midwater MIK net and vertically hauled ringnets at 144 different stations (Fig. 3). At each station, physical variables were recorded as follows: location, depth, pressure, flow rate (used to calculate volume filtered), estimated sample depth and water depth using a CTD/sonde system. Stations without depth estimates were excluded from analyses because zooplankton counts could not be standardised. Zooplankton were identified and counts per sample were then standardised using the estimated volume of water sampled. The volume of water sampled was calculated as the mean number of revolutions (NR) per minute of the flow meter, multiplied by the volume of the net. If the mean NR was more than one standard deviation outside the stated flowmeter revolutions per minute, these samples were discarded. For analyses, the zooplankton were grouped by biogeographic group following Beaugrand et al. 2001.