486 



Fishery Bulletin 91(3). 1993 



Notot henia gibberifrons Length Clustering 



+ 

 + 

 + 

 + 



+ 



^^ 



H/R 



I 1 1 1 1 1 1 I 1 1 1 1 1 1 



1.1 10 20 30 40 50 60 50 150 250 350 



LENGTH (cm) DEPTH (m) 



Champsocephalus gunnari Length Clustering 

 B 



20 1.7 1.4 10 20 30 40 50 60 50 150 250 350 



LENGTH (cm) 



DEPTH (m) 



Muraenolepis microps Length Clustering 



CLUSTER 



■■>■ K]^H 



I— »• h^TJ 



KLZ^ 



^nih 



^H 



{±}H 



30 

 H/R 



I — I — I — I — I — (— 



10 20 30 40 50 

 LENGTH (cm) 



I 1 1 1 1 



50 1 50 250 



DEPTH (m) 



Figure 8 



Results of cluster analysis of the size structure of three fish 

 populations around South Georgia Island. Each dendrogram 

 depicts the classification of samples according to the size com- 

 position of the associated fish population. Box plots describe 

 the location and spread of the total length of fish in each 

 cluster and the depth or sequential order of the stations that 

 comprise each cluster. The broken verticle lines within each 

 box represent the upper and lower notches and provide a 

 rough measure of the significance of differences between me- 

 dians (Hoaglin et al, 1983). A = N. gibberifrons during 1987- 

 88 survey compared with depth; B = C. gunnari during 

 1987-88 survey compared with depth; C = M. microps during 

 1988-89 survey compared with sample order. 



Notot heniops larseni Length Clustering 

 (1987/88) 



CLUSTER 



-3- 



•-* > — CSH 



I — io-hQh. • 



' 8 4Q-I* 



-EEB—  



- n+n — 1 



H 1 1 1- 



r-EH 



+ 



+ 

 I 1 1 1 1 1 



1.5 1.3 1.1 10 20 30 40 50 100 200 300 400 

 H/R Length (cm) Depth (m) 



Notothen iops larseni Length Clustering 

 (1988/89) 



-6- 



■^h 



.r-TjH. 



^+IH 



K^D^ 



K±^ 



i — EH 



I 1 h I 1 1 1 1 1 I 1 1 1 1 1 



1.6 13 10 20 30 40 50 50 100 150 200 



H/R Length (cm) Depth (m) 



Nototheniops larseni Length Clustering 

 (1988/89) 



CLUSTER 



<^}H 



"-GD-" 



-6- h^+ih 



^HUSH 



•i — © 



0}-h 



H/R 



10 20 30 40 

 Length (cm) 



H h 



10 20 30 40 

 Event Number 



Figure 9 



Results of cluster analysis of the size structure of the N. 

 larseni fish population around South Georgia Island. Each 

 dendrogram depicts the classification of samples according to 

 the size composition of the associated fish population. Box 

 plots describe the location and spread of the total length of 

 fish in each cluster and the depth or sequential order of the 

 stations that comprise each cluster. The broken verticle lines 

 within each box represent the upper and lower notches and 

 provide a rough measure of the significance of differences 

 between medians (Hoaglin et al., 19831. A = Comparison of 

 1987-88 population with depth; B = comparison of 1988-89 

 population with depth; C = comparison of 1988-89 popula- 

 tion with sample order. 



