Abramova: Composition Abundance and Population Structure of Spring-Time Zooplankton
167
St. 3
Sl4
15
t 200
12 -
- 250
150
10 +
200
10
8
150
100
6
5
~ t
T
100
50
50
0
0
0
18.05
03.06
10.06
18.05
03.06
10.06
10
Sl6
300
2,5
Sl8
250
8 •
250
2
200
6
+ 200
1,5 ~
f :::
4
- 150
o . :!
100
2 ~
50
50
o 4
0
0
18.05
03.06
10.06
18.05
03.06
10.06
Sl11
' :j
Sl9
200
6
250
5
200
150
4
150
3
100
2
1"0
4 ~
50
2
+ 50
0
0
0
0
18.05
03.06
10.06
18.05
03.06
10.06
6
Sl10
250
5
+ 200
4
3
150
2
100
1 '
50
o ,
0
18.05
03.06
10.06
Figure 3: Change in surface salinity and zooplancton abundance at selected stations. Light gray: surface salinity
(left scale), dark grey: abundance (ind.lm 3 , right scale).
negative impact of freshwater runoff, primarily on marine community prevailing in this area. In
a sample taken on 11.06 from st.21 no presence of plankton was reported.
Conclusion
Species diversity of zooplankton in May-June in the shelf area of Laptev Sea may be
characterized as comparatively moderate with estuarine-arctic complex dominating in number of