The seasonal biological surveys of 1971 / John C. Ayers, Samuel C. Mozley, John A. Stewart.

TOTAL ANIMALS

0o
1
2
3
0
1
2
3
0
2
3^

JULY 1970
NOVEMBER 1970

Hk APRIL 1971
Ah

0
I
2

JULY 1971

0
I]
2'
3

H- - _NOVEM
< -t 5I

BER 1971

ZONE MEANS
TADARD ERROR
5000/M2
2
FIG. 7. Mean numbers per m of total animals (benthic macroinvertebrates excluding Mysis relicta) by benthic depth zones and seasons.
Width of kite diagrams at midpoint of each vertical interval is proportional to mean numbers. Scale is given in inset. See Table 1
for zone depth intervals and numbers of observations for each mean.
Dotted lines on November 1970 diagram indicate mean and standard
error for benthic zone 2 excluding anomalous sample from station
SDC-7-3.

53