-23-
Pigure 15 and Table ll give decays for 9
localities.
In addition, five later samples
(plates 6969-73 from Belle on July 22, 1954)
counted 34 and 1106 days post-Nectar gave
slopes ranging from -1.31 to -1.36.
Thus, at each locality, declines vere
appreciably steeper than decays.
Halimeda
decay curves resemble those of sea water
and plankton in being nearly straight for a
long period.
Table 11.
Desay rates of semplee of 4elimeds et
rine Leselitios.
curve
nvaber
Plete
maber
ULste for Pigure 1s.
Loeelity
Bete of
colleetion
~>
Begetive
slope te
@00 days
1
2
3
6322
a3e6
4348
Selle
°
°
6/ls/ae
.
°
at
1.3
1.38
6
6
’
6
®
1a
ones
ovee
even
17
els)
00m)
:
Alice
Janet
Olive
tere
Y-2ame
°
7/20/ee
.
°
°
°
1.4
1.8
1.8
1.4
1.8
1.8
ll
12
e008
oese)
Hruse
+ Lmer
ve
es0—Cs
Lewes?
‘
is
esee
Ot
.
ed
0/7be
1.8
°
1.4
1.6
°
2.8
°
1?
The last three curves, representing the southern islands,
Elmer, Henry, and Leroy, become less steep at about 600 days,
while at islands farther north the rate does not change,
suggesting a difference in isotopic constitution in the two
regions.