19201 



Allen: Plankton of" the San Joaquin River 



131 



Table 1. — Organisms Per Cubic Meter in Plankton of 

 Stockton Channel in 1913 — (Continued) 



1913 



10/18 

 10/22 

 10/26 

 10/29 

 11/ 1 

 11/ 5 

 11/ 8 

 11/12 

 11/15 

 11/19 

 11/22 

 11/26 

 11/30 

 12/ 3 

 12/ 6 

 12/10 

 12/14 

 12/17 

 12/20 

 12/24 

 12/27 

 12/31 



Oscillatoria 

 tenuis 



370,272 



317,376 



52,896 



6,400 



6,400 



52,896 

 3,200 

 1,600 



79,344 

 3,200 



400 



800 



13,224 



105,792 



400 



26,448 



13,224 



Phormidium 

 spp. 



105,792 



423,168 



52,896 



52,896 



52,896 



1,600 



185,136 



400 

 400 

 400 

 400 



Stigonenia 

 sp. 



Total 

 Schizophyceae 



1,110,816 



2,016,448 



370,272 



812,640 



1,699,072 



912,032 



793,440 



4,284,576 



2,063,144 



1,008,224 



1,388,496 



689,248 



347,024 

 641,152 



297,328 



158,052 



1,600 260,668 



364,060 



264,880 



800 89,156 



225,608 



145,464 



Actinastrum 

 hantzschii 



6,400 

 105,792 



1,600 



52,896 



105,792 



79,344 



132,240 



52,896 



3,200 



400 

 400 



Actinastrum 

 hantzschii (large) 



211,584 

 105,792 

 264,480 

 211,584 

 211,584 

 52,896 



52,896 



400 



1913 



1/ 5 

 1/ 8 

 1/12 

 1/15 

 1/19 

 1/22 

 1/26 

 1/29 

 2/J2 

 2/ 5 

 2/ 8 

 2/12 

 2/15 

 2/19 

 2/23 

 2/26 

 3/ 1 

 3/ 5 

 3/ 8 

 3/12 

 3/15 

 3/19 

 3/23 

 3/26 

 3/29 

 4/ 2 

 4/ 5 

 4/ 9 

 4/13 

 4/16 

 4/19 

 4/23 

 4/26 



Coelastrum 

 microporum 



3,200 



3,200 



Pediastruni 

 boryanum 



6,612 

 800 



400 



1,200 

 1,600 



800 



800 

 3,200 

 4,800 

 4,800 



39,672 



26,448 

 6,400 

 6,400 



1,600 

 9,600 

 9,600 



79,344 

 3,200 

 9,600 

 3,200 



12,800 

 3,200 



9,600 



1,600 



Pediastrum 

 duplex 



6,612 



400 



400 



400 



1,200 



4,800 



400 



19,836 



13,224 



2,400 



5,600 



6,400 



11,200 



92,568 



26,448 



79,344 



3,200 



12,800 



12,800 



6,400 



22,400 



132,240 



9,600 



16,000 



9,600 



6,400 



79,344 



6,400 



6,400 



16,000 



1,600 



3,200 



16,000 



Pediastrum Raphidiuin 



simplex polyniorphum 



400 



Richteriella 

 botryoides 



13,224 



1,666 

 1,600 



6,400 



3,200 



52,896 

 79,344 



1,600 

 1,600 

 52,896 

 1,600 

 3,200 



1,600 



6,400 



4,800 



79,344 



79,344 



132,240 



132,240 



800 



3,200 



