Jellyfish patch formation investigated by aerial photography and drifter experiment

Effect of nearshore surface slicks on meroplankton distribution: role of larval behaviour

“…At each slick and concurrently with our sampling survey, we deployed a set of 15 GPS-tracked surface drifters inspired by the design of Magome et al (2007). They consisted of a square styrofoam float with a wooden board (0.025 m 2 ), which was hung at 0.45 m depth from a rope and was kept taut by a weight to an underwater sail.…”

Controlled activation of species typical behaviour to low salinity, seawater movement and seawater depth in Aurelia labiata (Scyphozoa) Jellyfish in Roscoe Bay, Canada

“…Whilst tide and wind generated currents have historically been invoked to explain the distribution of pelagic cnidarians (Wooldridge & Erasmus, 1980;Graham et al, 2001;Uye et al, 2003;Magome et al, 2007), a complementary role of behaviour for some scyphozoans is becoming apparent (Hamner et al, 1994;Hamner, 1995;Sparks et al, 2001;Doyle et al, 2007; for a discussion, see Albert, 2011). The present observation that low salinity, seawater currents and shallow water activate species typical behaviour provides direct evidence that the behaviour of Aurelia spp.…”

A new technique for detecting colored macro plastic debris on beaches using webcam images and CIELUV

“…In order to compute the covered area, a projective transformation was applied because the covered areas are distorted in the original photographs. The projective transformation is based on the method developed by Magome et al (2007). First, using Real-Time Kinematic (RTK) GPS (Trimble 5800 II, Trimble), we measured the geographic coordinate of the center of ten panels (1 Â 1 m) placed randomly in the coverage area of the image.…”