Figure 1.
The ‘hot plate’ system was deployed in field (A) and seawater temperature 3 mm over the experimental settling surfaces on both a hot plate and a control plate was recorded for the duration of the deployment (B).
Panel C shows mean (± S.E.) percent cover of Didemnum perlucidum and total biomass of the sessile assemblage on hot plates and controls (n = 8). Note change of scale on biomass plot, for clarity. A representative sessile assemblage covering a control (left) and hot (right) plate after 36 days is shown in panel D.
Figure 2.
The relationship between distance from the hot plate surface and magnitude of warming under different flow conditions (A).
Mean temperature differentials (±SEM) between a control and a hot plate were calculated from 15 readings taken during one minute, following sufficient time for thermal gradients to stabilise. See methods for details of flow conditions. Mean (±SEM) temperature difference between control and hot plate at different positions across the plate surface, under different flow conditions, is shown in panel B.