Table 7. Comparison between slopes among fecundity of A. lobifera collected from different reef sites across all temperature*nitrate treatments.

Comparison between slopes	df	SSD	t-test	P-value
Inner-shelf x Mid-shelf	41	0.24	3.51	0.001
Inner-shelf x Outer-shelf	31	0.22	6.13	<0.001
Mid-shelf x Outer-shelf	22	0.21	2.73	0.02
Inner-shelf (Control) x Inner-shelf (Low)	30	0.56	3.31	0.002

SDD stands for the standard error of the difference between slopes of the linearised function defining the relationship between shell size (mm²) and number of individuals produced.