166
5 Spatial and TeIllporal Distribution Patterns
5000
4000
(/)
::::l
"0
">
-g 2000
1000
Subtidal
.1993
01994
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Fig. 5.6.1 Abundances and seasonal development of shore crabs in the subtidal of the backbarrier system of Spiekeroog in 1993 and 1994, caught with a beam trawl. (Data froIll Wolf 1997)
2000
S b'd 11994
U tl a
Dmales
Dfemales
1500
• ovigerous females
(/)
ro
:::J
"0
1000
:~
"0
C
500
0 ~ r11
.. I I I i\. "L n n
0
I,{')
0
I,{')
0
I,{')
0
I,{')
0
I,{')
0
I,{')
C\J
~
(")
"? "<:t "i
I,{')
LJ?
<9
<9
t-~
J,
,.w ,.- w
w ,.- <.0 ..- W
C\J
C\J
(")
(")
vI,{')
I,{')
<.0
<.0
f'..
size [mm]
l'-ig. 5.6.2 Size frequency distributions of all shore crabs caught with a beam trawl in the subtidal in 1994. (Data from Wolf 1997)