Figure
4. Environmental
profiles of temperature and salinity for the case study sites largely
differ in their halocline characteristics: Skrubbholmen (top panels)
is unstratified, whereas Kobbavika (middle panels) has a shallow
halocline and Vindsvik (bottom panels) has a deeper halocline. The
halocline limit of 28 ppt represent the black contour line. White
blocks indicate periods where environment data is not available.
Overlaid onto the environment profiles is the median daily swimming
depth of experimental fish at Kobbavik and Vindsvik, calculated from
the shallowest-swimming school. Treatments represented are standard
commercial-fed cages (Surface), deep lights and feed (Deep lights +
feed), and deep lights and feed, and a lice skirt (Deep lights + feed
+ skirt, at Vindsvik only). Periods differ in year between sites:
Kobbavika: 2015-2016; Vindsvik: 2016-2017; Skrubbholmen: within 2018.
