1 -
10 0.105 0.05I j
0
o-'
4::
0050 . d
Nov , Dec I Jan I Feb
1
1
1
1
1
1
1
1
1
1
1
A
0A
4::
0I 4 4
+
A
7 Oct 142
scale
I
196
Nov I Dec I Jan I Feb
8W, Phosphorus P
I
-
-
- N$ Nitrogen N
Nov I Dec I Jan I Feb I Mar I Apr I May ,Jun P
I
I
I
I
I
1 ' 1
I I
I
I
I
I
I
I I
I
I
I
I
6 I
[3
C
-------I Lo
5 0
I $0
* . .
.*.. ..........
,
& .
:
:
.
-
..... ....... .... ... .. :
.....
......
...
............
i
B
1 :
r ;
.-_
..0
.%.
.......... .......
=
)2 :,..*"
B
C
I\
1962-63
L
,
,
m
,
,
L
,
l
-
Nov
Dec
Jan I Feb I .Mar I Apr I May 'Jun
2
1
0
25
20
15
10
5
0
FIG. 15. The winter-spring variation in nutrients and plankton at a station (41'26.5"
71'25'W) a t the mouth of Narragansett Bay. I n each case, the data in A represents
a vertical expansion of the values for the first four months shown in C. (After Pratt,
1965.)