<N 



PCI 



(N 



PCI 



Figure 9: Principal component (PC) analysis for all species data. A) Plot of PC scores for dates: A = 

 23 April 1997, B = 07 May 1997. C = 22 May 1997, D = 04 June 1997, E = 20 June 1997, F = 02 July 1997, 

 G = 17 July 1997, and H = 01 August 1997. B) Plot of standardized PC loadings for species: CL = 

 chironomid larvae, LC = Laeoneris culveri , ML = Mulinia lateralis . PC = Polydora cornuta , and SB = 

 Streblospio benedicti . 



F-22 ♦♦♦ Effects of Temporality, Disturbance Frequency and Water Flow 

 on an Upper Estuarine Macroinjauna Community 



