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Fig. 3 | Helgoland Marine Research

Fig. 3

From: First record of the non-indigenous jellyfish Blackfordia virginica (Mayer, 1910) in the Baltic Sea

Fig. 3

Seasonal variation of Blackfordia virginica (Mayer, 1910) densities (ind. m−3 ± SD) with average temperature (white dots) and salinity (black dots) conditions in Kiel Canal for the years 2016–2017, when animals were first recorded over a longer time period. First sightings from Oct. 2014 and July 2015 are not shown. Sampling time points (black bars) are shown, with non-quantitative presence indicated by asterisks (*). Note n.a. = no data

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