Figure 1.
Collection sites for two-weekly zoospore counts and growth experiment.
Main map - Perth region, Western Australia; Upper Inset – Australia map showing oceans and distribution of Ecklonia radiata in grey; Lower Inset - Point Peron, displaying Barrel Site and Haliotis Bay collection sites.
Figure 2.
Mean survival (±SE) over 18 days from samples collected on the 24 January 2011.
Gametophytes were grown in four different temperatures; 16°C (white triangle, long dash line), 18°C (grey square, small dash line), 20°C (white circle, dotted line), 22°C (black circle, solid line). Lines shown are quadratic regressions.
Figure 3.
Mean (±SE) number of zoospores in Ecklonia radiata plants measured at two-weekly intervals for five months.
Number of zoospores measured per mm of lamina tissue, five month sampling period from November 2010 to May 2011. Two sites were Barrel Site (Plot A; black, solid circles) and Haliotis Bay North (Plot B; white, hollow circles).
Figure 4.
Plots of mean (±SE) measurements taken 18 hours after release.
Plot A) –settlement density, B) gamete size, and C) percentage of initial density which had germinated. Within each plot, bars were allocated the same letters if they were not statistically significantly different (P>0.05).
Figure 5.
The mean (±SE) relative density and size of gametophytes.
Plots represent relative density measured after 3 (A) and 6 (B) days of culture, and the mean (± SE) size of gametophytes measured after 3 (C) and 6 (D) days of culture. Gametophytes were grown in four different temperatures; 16°C (white triangle, long dash line), 18°C (grey square, small dash line), 20°C (white circle, dotted line), 22°C (black circle, solid line).
Table 1.
Analysis of Variance of gametophyte density and size.
Table 2.
Summary of pairwise SNK comparisons of temperature treatments (°C) within each sample period.
Figure 6.
Environmental conditions across the sampling period.
A) Full moon cycles (Source: Sutherland Shire Weather Station) B) Day-length (Photoperiod) (Source: Geoscience Australia); C) Global solar radiation (Source: Australian Bureau of Meteorology); D) Wave height (Source: Western Australian Department of Transport); E) Sea temperature (Source: Western Australian Department of Fisheries).
Table 3.
Summary of linear regressions of biological variables against environmental variables.