Coral Recruit-Algae Interactions in Coral Reef Lagoons Are Mediated by Riverine Influences

Table 6

Principal component analysis (PCA): summary of environmental measurements and statistics and PCA results. Percent variance and eigenvalues explained for the first three components and environmental axis representing each.

Multivariate analysis
Principal components			PC1	PC2	PC3
Eigenvalue			6.85	3.22	0.92
% variance explained			61.3	29.2	8.0
Cumulative variance explained			61.3	90.5	98.5
Variable			Component loadings
Sedimentation rate			0.369	−0.146	−0.034
Temperature			0.135	−0.375	0.679
Current speed			0.302	0.280	0.360
Bottom sediment organics			−0.356	0.087	0.339
Ammonium			0.345	−0.187	−0.279
Nitrates			−0.097	−0.523	−0.244
Distance based linear model; resemblance: S17 Bray-Curtis similarity
Sequential tests
Variable	AICc	df	SS (trace)	Pseudo-		Prop.
Sedimentation	267.02	44	1566.4	4.9552	0.01	0.10122