21
Data: SakhNIRO+ECS Е Е lena lena М М . . Latkovskaya Latkovskaya , , Tatyana Tatyana А А . . Belan Belan , Vladimir B. , Vladimir B. Krasavtsev Krasavtsev , , Alexandra V. Alexandra V. Polteva Polteva , , Irina Irina V. V. Motylkova Motylkova , , Tatyana Tatyana G. G. Koreneva Koreneva , , Tatyana Tatyana A. A. Mogilnikova Mogilnikova "Conditions of "Conditions of hydrobiological hydrobiological community formation in the community formation in the lagoons of north lagoons of north - - eastern eastern Sakhalin Island Sakhalin Island " "

Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

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Page 1: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

ЕЕlena lena ММ. . LatkovskayaLatkovskaya, , Tatyana Tatyana АА. . BelanBelan, Vladimir B. , Vladimir B. KrasavtsevKrasavtsev, , Alexandra V. Alexandra V. PoltevaPolteva, , IrinaIrina V. V.

MotylkovaMotylkova, , TatyanaTatyana G. G. KorenevaKoreneva, , TatyanaTatyana A. A. MogilnikovaMogilnikova

"Conditions of"Conditions of hydrobiologicalhydrobiologicalcommunity formation in the community formation in the

lagoons of northlagoons of north--eastern eastern Sakhalin IslandSakhalin Island""

Page 2: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

EEcological cological observationsobservations were conducted in 1995were conducted in 1995--20020011The objective- the study of the abiotic and biotic components of ecosystems and evaluation of influence of main environmental factors on formation of biological communities

The Complex studies in The Complex studies in the the baybayssincludeincludedd::hydrological and hydrological and hydrochemicalhydrochemicalresearchesresearches;;The Study The Study of plankton community of plankton community parameterparameterss;;The StudyThe Study of granulometric of granulometric composition of the composition of the ssedimentediment;;The Study The Study of benthicof benthic communitcommunitiesies;;IIchthyologicalchthyological researchesresearches;;MiMiccrobiologirobiologicalcal researchesresearches;;The Study of the contents The Study of the contents of of pollutpollutants in the water, sediment ants in the water, sediment and and hydrobiont’shydrobiont’s tissuetissue..

Period Sampling areas Expedition1995 (June, September)

Nyyskiy SakhNIRO

1996 (June, August)

Nyyskiy, Nabil, Chayvo, Pilitun

SakhNIRO

1997 (June, September)

Nyyskiy, Chayvo, Nabil

SakhNIRO

1998 (June, September

Nyyskiy SakhNIRO

1999 (June-July)

Pilitun, Chayvo, Nyyskiy, Nabil

SakhNIRO+ECS (Ecological company of Sakhalin)

2000 (July) Lunskiy, Nyyskiy SakhNIRO2001 (September)

CHayvo SakhNIRO

Page 3: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Sampling areasSampling areas

140 145 150 155 160

45

50

55

Sakh

alin

The Okhotsk Sea

1234

5

6

7

8 9

10

11

12

15-13

16 17

18

4748-505152

м. Химимбанчм. Охотников

о. Аркуту

руч. Хоябусибин

о. Баута

р. ВалВал

м. Ледовыйм. Ульвор. Аскасай м. Камбрульбаш

12

3

4

5

6

2p

3p4p1p

1/2345

6

7

891011121314

1516

1718

1920

212223

2425

2627

28

29 30 31

32/33 34 35

36/3738394041/42

4344

45 4647

48/49

р.Пильтун

р.Паромай

р.Мухто

р.Кадыланьи м.Кашкалебагш

м.Чиркпа

м.Бон-Бон

м.Медвежий

о.Заселенныйо.Чайка

м.Тамары

м.Плющев

КАТАНГЛИ

о-ва Чаячьи

12 11

9

8

10

76

54

32

1

о. Керуту

о. Гетабу

р. Дагио. Лярво

о. Каурунани

р. Нельбуга

Ноглики

о. Кротовский

м. Медвежий

о. Такрво

о. Баяндина

р. Баури

р. М. Баури

Руч. М. Венио. М.Куличий

о. Гафовича

2118 19

1716

12

203 4 56

7

15 14

13

12

8

9

10

1

2

3

4

5

6

Piltun

ChayvoNyyskiy

Nabil

Sampling station .

11 7

1234

5

6

7

8 9

10

11

1215-13

16 17

18

4748-505152

123456

789 11 10

121314

15 16

17

1821

22

23

27

28

2526

24

1920

r. T

engi

r. Kiri

r. Kyrlni

r. Kavle

oz. Yuzhnoye

Lunskiy

Page 4: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Bathymetric map (A) and Bottom Bathymetric map (A) and Bottom and surface salinity (B) and surface salinity (B) on tide in Piltun and Nabilon tide in Piltun and Nabil

КАТАНГЛИ

о.Чайка

о-ва Чаячьи

м.Плюшев

м.Медвежий

Nabil А Б

р.Пильтун

р.Паромай

р.Мухто

р.Кадыланьи

м.Кашкалебагш

м.Чиркпа

м.Бон-Бон

ПАРОМАЙ

ПИЛЬТУН

м.Матны

Piltun

р.Пильтун

р.Паромай

р.Мухто

р.Кадыланьи

м.Кашкалебагш

м.Чиркпа

м.Бон-Бон

ПАРОМАЙ

ПИЛЬТУН

м.Матны

А Б

-2

1

4

7

10

13

16

19

22

25

28

0

bottombottomsurfacesurface

The Piltun and Nabil are wide with long narrow entrances. The depth varies from 0.6 to 2 m, 1.2 m in averageThe marine water doesn’t cover all area of this Bay on high tide.

Page 5: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Bathymetric map (A) and Bottom and surface salinity (B) on tide Bathymetric map (A) and Bottom and surface salinity (B) on tide in Chayvo and Nyyskiy Baysin Chayvo and Nyyskiy Bays

м. Химимбанч

о. Аркуту

руч. Хоябусибин

о. Баута

р. Вал

Вал

р. Аскасай

м. Химимбанч

о. Аркуту

руч. Хоябусибин

о. Баута

р. Вал

Вал

р. Аскасай

Залив Чайво

о. Иркимибу

А Б

о. Иркимибу

р. Даги

р. Нельбуга

Ноглики

р. Баури

р. М. Баури

Руч. М. Вени

р. Даги

р. Нельбуга

Ноглики

р. Баури

р. М. Баури

Руч. М. Вени

NyyskiyА Б

surfacesurfacebottombottom

Chayvo

The Chayvo and Nyyskiy are narrow with short wide entrances. The depth varies from 0.6 to 2 m, 1. 5 m in averageThe marine water covers practically all area of these Bays on high tide.

Page 6: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Bathymetric scheme (A) and Bottom and surface salinity (B) Bathymetric scheme (A) and Bottom and surface salinity (B) in Lunskiy Bayin Lunskiy Bay

3.38 3.43 3.48

1.2

11.2

61.3

11.3

65

55

5

14 14 14

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

h

m

A

3.38 3.43 3.48

1.2

11

.26

1. 3

11

.36

55

55

14 14 14

0

3

5

8

13

17

21

25

27

s_d

S

Bottom salinityBottom salinity3.38 3.43 3.48

1.2

11.2

61

.31

1.3

65

55

5

14 14 14

0369121518212427

S_0

S

Surface salinitySurface salinityDepth, mDepth, m

The Lunskiy is the smallest, deepest and the most salinity at any phase of tide.

Page 7: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

The main parameters of different types of water The main parameters of different types of water in northin north--eastern Sakhalin lagoonseastern Sakhalin lagoons

05

101520253035404550

d,m t0C

S, ‰

BOD,

mgO

/l

РО43

-, m

kg/l

Si-S

iO3,

mg/

l

Ch a

, mkg

/l

DО, m

g/l

TSS,

mg/

l

conc

entra

tions

123

11-- in the rivers and in the its mouths (The highest in the rivers and in the its mouths (The highest concentrations of BOD, Silicates, Phosphates, TSS)concentrations of BOD, Silicates, Phosphates, TSS)22-- in lagoons in lagoons 33-- near near entranceentrances and tidal s and tidal channelchannelss

Page 8: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Water parameters during 24 hours in Chayvo Bay 8-9 September, 2001

10.5

15.5

20.5

25.5

9.49.910.410.911.411.912.412.913.4

Salinity ppt

t C

354045505560657075

12.00 15.00 18.00 21.00 0.00 3.00 6.00 9.00 12.007911131517192123

РО43-NO3-,

mkg/lmkg/l

8.09 9.09

Temperature and salinityPhosphates and nitrates

6

6.5

7

7.5

8

8.5

9

9.5

10

12.00 15.00 18.00 21.00 0.00 3.00 6.00 9.00 12.002

2.5

3

3.5

4

4.5

OSi

mg/lmg/l

Silicates and DO

0

5

10

15

20

25

30

35

40

45

50

chlorophyll a

59mkg/l

Chlorophyll a

Low tide Low tide Low tide Low tideThe water on low tide brings from the bays more amount of phosphates, silicates, and chlorophyll. The seawater is enrichment by dissolved oxygen (DO) and nitrates

Page 9: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

The grain size distribution of upper sediment layer The grain size distribution of upper sediment layer in northin north--eastern Sakhalin lagoonseastern Sakhalin lagoons

0102030405060708090

100

>1 1-0.5 0.5-25 0.25-0.1 0.1-0.05 0.05-0.01 < 0.01

sediment fractions, mm

% 123coas ta l zone

11-- in the rivers and in the mouths (gravel and middle sand are prein the rivers and in the mouths (gravel and middle sand are predominant here)dominant here)22-- in lagoons (in lagoons (siltysilty sand and silt)sand and silt)33-- near near entranceentrances and s and channelchannels (gravel)s (gravel)The fine and middle grain sand are dominant on the nearest shelfThe fine and middle grain sand are dominant on the nearest shelf (not far from (not far from entrances) and their entrances) and their percentagepercentage are higher, than inside the bays are higher, than inside the bays

Page 10: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Bottom sediments of the Bays Bottom sediments of the Bays

12

3

4

5

6

7

8

р. Даги

р. Имчин

р. Тымь

р. Баури

р. Томи

р. Тапауна

1 - clay with detritus2 - pelit silt3 - alevrit silt4 - alevrit5 - fine sand6 - middle sand7 - coarse sand

143.10 143.20 143.30

143.10 143.20 143.30

52.3

052

. 40

5 2.5

052

.60

52.3

052

. 40

5 2.5

052

.60

1

2

3

4

5

4 - alevrit5 - fine sand6 - middle sand7 - coarse sand8 - gravel

1-3 - absent

6

5

4

7

8

5

456784 - pelit and alevrit

5 - fine sand6 - middle sand7 - coarse sand8 - gravel

There are 8 main type of sediments, butThere are 8 main type of sediments, butNot all of them are presented in each lagoon Not all of them are presented in each lagoon

р. Эрри

р. Сабо

р. Кадыланьи

р. Паромай

р. Пильтун

0.50

1.50

2.50

3.50

4.50

5.50

6.50

7.00

1

2

3

4

5

6

7

1 - clay with detritus2 - pelit silt3 - alevrit silt4 - alevrit5 - fine sand6 - middle sand7 - coarse sand

Page 11: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Distribution of Al in upper layer of bottom Distribution of Al in upper layer of bottom sediment of the Bays, sediment of the Bays, ppmppm dry weightdry weight

53°

20'

53°

00'

143° 05' 143° 15'

р. Эрри

р. Сабо

р. Кадыланьи

р. Паромай

р. Пильтун

0

2000

3000

5000

8000

12000

Al, mkg/g dry weight

р. Тапауна

р. Даги

р. Томи

р. Баури

р. Тымь

р. Имчин

0

1000

3000

5000

8000

10000

13000

15000

Al, mkg/g dry weight

143.10 143.20 143.30

143.10 143.20 143.30

52

.30

52

.40

52

.50

52

.60

0

2000

4000

6000

8000

10000

Al, mkg/g dry weight

3.38 3.43 3.48

1.2

11.2

61.3

11

.36

55

55

14 14 14

Al_k

0

3000

6000

9000

12000

Al, mkg/g dry weight

0

3000

6000

9000

12000

Al, mkg/g dry weight

The zone of this metal accumulations is very close to distribution of fine sediment

Page 12: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS; Lab analisys: TINRO-center, Kovekovdova L. T.

The concentration of metals and total petroleum Hydrocarbons (HYThe concentration of metals and total petroleum Hydrocarbons (HY) in ) in upper sediment layer in the northupper sediment layer in the north--eastern Sakhalin lagoons eastern Sakhalin lagoons

11-- in the rivers and in in the rivers and in the mouthsthe mouths22-- in lagoons in lagoons 33-- near near entranceentrances and s and channelchannelss

0

1

2

3

4

5

6

7

8

h, m Al, % Fe, % Hgx10 Cu Pb Cdx10 Co As

metalls

conc

entra

tion,

mkg

/g d

ry w

eight

123coastal zone

0

10

20

30

40

50

60

s ,%o Zn Cr Ba Ni НУmeta lls

conc

entra

tion,

mkg

/g d

ry w

eigh

t 123coastal zoneThe concentration of most elements The concentration of most elements

(except As and Hg) and NY were below (except As and Hg) and NY were below in marine areas and nearest shelfin marine areas and nearest shelf

Page 13: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Metal concentrations in the upper layer of Metal concentrations in the upper layer of bottom sediment of Bays, bottom sediment of Bays, ppmppm dry weightdry weight

Bays Al Fe Zn V Ni Cr Cu P b Co Cd HgChayvo Mean 6414 8643 24.2 28.7 16.6 20.5 6.87 3.13 3.29 0.050 0.011

S D 5799 4994 20.4 15.1 12.1 15.0 3.95 3.34 2.24 0.000 0.010Nabil Mean 4996 6520 21.8 21.7 16.3 17.7 5.89 1.46 2.65 0.081 0.013

S D 3583 3451 15.5 8.2 17.2 18.4 3.53 1.65 2.43 0.082 0.007Nyys kiy Mean 8300 8131 28.2 21.1 11.1 12.6 5.83 2.88 2.92 0.089 0.010

S D 4395 5892 20.2 6.6 9.2 10.2 3.64 2.68 2.29 0.066 0.004P iltun Mean 2718 4429 13.6 20.0 11.4 11.7 4.38 1.15 1.46 0.053 0.010

S D 1950 3456 11.3 0.0 12.5 9.7 1.95 1.27 1.25 0.012 0.005Luns kiy Mean 3839 15490 36.6 29.5 12.7 16.1 10.52 9.85 4.64 0.208 0.042

S D 4507 12470 25.3 20.7 9.2 10.8 8.00 7.18 2.44 0.171 0.034

Page 14: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Ratio of ecological groups of Ratio of ecological groups of phytoplankton in surface water of phytoplankton in surface water of

different sampling areasdifferent sampling areasLunskiy

0102030405060

8 9 10 18 12 6 23 13 17 11 20 22 27 2 2505101520253035

marine freshwaterfreshwater-brackish freshwater, perhaps, brackish-marinebrackish brackish-marineS, surface S, bottom

% %o

Station0

10

20

30

40

50

60

70

9 11 40 49 15 16 18 20 21 24 26 29 35 37 58 (0)low tide

58 (0)hightide

станции

%

fre s hwate r fre s hwate r-brackis hmarine brackis h-marinebrackis h fre s hwate r, pe rhaps , brackis h-marine

ChayvoNear entranceNear rivers

Central parts of bay Near rivers Central parts of bayNear

entrance

0

100

200

300

400

500

12:00 15:00 18:00 21:00 0:00 3:00 6:00 9:00 12:00

time

density,thousandcell/lbiomass, mg/m3

The dynamic of phytoplankton density and biomass during 24 hours in Chayvo

-the quantity is increasing on low tide

Page 15: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Distribution of Total biomass of phytoplankton in the northDistribution of Total biomass of phytoplankton in the north--eastern Sakhalin lagoons, mg/meastern Sakhalin lagoons, mg/m33

143.10 143.20 143.30

143.10 143.20 143.30

52

.30

52

.40

52

.50

52

.60

52

.30

52

.40

52

.50

52

.60

0

10

25

50

100

200

300

500

1000

1500

mg/ cub. m

Distribution of total phytoplankton biomass

3.38 3.43 3.48

1.2

11

.26

1.3

11

.36

123456

789 11 10

121314

15 16

17

18

21

22

23

27

28

2526

24

1920

55

55

14 14 14

100

200

300

400

500

600

700

800

900

950

2000

?

Distribution of total phytoplankton biomass

mg/ cub. m

-50

0

10

25

50

100

200

300

400

500

mg/ cub. m

Distribution of total phytoplankton biomass

51 5

4'52

03'

52 0

3 '5 1

54 '

оо о

о

о. Гафовича

0

25

50

100

200

300

400

500

1000

Distribution of total phytoplankton biomass

mg/ cub. m

Page 16: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Ratio of phytoplankton taxonomic groups biomass in Ratio of phytoplankton taxonomic groups biomass in the norththe north--eastern Sakhalin lagoons, %eastern Sakhalin lagoons, %

Ratio of phytoplankton taxa in Chayvo Bay, %

BacillariophytaCryptophytaChlorophytaDinophytaEuglenophytaCyanophytaCrysophyta

BacillariophytaChlorophytaCrysophytaCryptophytaDinophytaEuglenophytaCyanophyta

Ratio of phytoplankton taxa in Luns kiy Bay, %

BACILLARIOP HYTA

CHLOROP HYTA

CHRYZOP HYTA

CRYP TOP HYTA

CYANOP HYTA

DYNOP HYTA

Ratio of phytoplankton taxa in Piltun Bay, %

-Diatoms dominated over the whole Bays- In Piltun the part of fresh water green and green-blue algae was increased- In Lunskiy – golden and dinoflagellates were more abundant- In Chayvo – Euglenophyta share was higher

Page 17: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Distribution of the Total biomass of macrozoobenthos in the Distribution of the Total biomass of macrozoobenthos in the northnorth--eastern Sakhalin lagoons, wet weight, g/meastern Sakhalin lagoons, wet weight, g/m2 2

-20

1

5

10

50

100

g/sq.m

Total biomass of macrozoobenthos

51 5

4'52

03

'

52

03'

51 5

4'

оо о

о

о. Гафови

ча

0

5

10

25

50

100

g/sq.m

Total biomass of macrozoobenthos

143.10 143.20 143.30

143.10 143.20 143.30

52

.30

52

.40

52

.50

52.6

0

52

.30

52

.40

52

.50

52.6

0

1104090140190240290340390>500

Total biomass of macrozoobenthos

g/sq.m 1

5

10

25

50

100

500

1000g/sq.m

Total biomass of macrozoobenthos

3.38 3.43 3.48

1.2

11.2

61

.31

1.3

6

123456

789 11 10

121314

15 16

17

18

21

22

23

27

28

2526

24

1920

55

55

14 14 14

-40

5

20

55

105

155

205

0

б

g/sq.m

Total biomass of macrozoobenthos

In most cases very similar with distribution of fine sediments

Page 18: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Ratio of Ratio of macrozoobenthicmacrozoobenthic taxonomic groups in the northtaxonomic groups in the north--eastern Sakhalin lagoons eastern Sakhalin lagoons

Ratio of biomas s macrozoobenthic groups in Chayvo, %

Amphipoda BivalviaPolychaetaDipteraGas tropodaIs opoda others

Ratio of biomas s macrozaoobe nthic groups in Nyys kiy Bay, %

BivalviaPolychae taOligochae taAmphipodaDipteraothers

-Bivalve (Macoma balthica, Liocyma fluctuosa) were more abundant in all bays- In Lunskiy – Cumacea, Polychaeta, Cirripedia and Echiurida were significant- In Nyyskiy and Piltun – oligochaets had visible biomass.

Ratio o f bio mas s mac ro zo o be nthic g ro ups in Luns kiy, %

EchiuridaAmphipodaBivalviaCirripe diaCumace aDe capodaGas tropodaP olychae taOthe rs

AmphipodaDipteraBivalviaGas tropodaOlygochaetaIs opodaPolychaetaothers

Ratio of biomas s macrozoobe nthic groups in Piltun, %

Page 19: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Distribution of the biomass ofDistribution of the biomass of Macoma Macoma balthicabalthica, wet weight, g/m, wet weight, g/m22

143.10 143.20 143.30

143.10 143.20 143.30

52. 3

052

.40

5 2.5

05 2

.60

52. 3

052

.40

5 2.5

05 2

.60

-50

0

50

100

150

200

500

0

g/sq.m

Distribution of biomass Macoma balthica

-50

0

50

100

500

1000

1500

g/ sq. m

Distribution of Macoma balthica biomass

5 1 5

4'52

03

'

52 0

3'51

54'

оо о

о

о. Гафови

ча

0

2.5

5

10

25

50

100

200

500

Distribution of Macoma balthica biomass

g/ sq. m

3.38 3.43 3.48

1.2

11.2

61.3

11.3

65

55

5

14 14 14

0

5

10

20

30

40

50

100

б

g/ sq. m

Distribution of Macoma balthica biomass

0102030405060708090100

g/ sq. m

Distribution of Macoma balthica biomass

Piltun Chayvo Nyyskiy

Lunskiy

Nabil

Page 20: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

Bottom Community structure of Chayvo and Bottom Community structure of Chayvo and Piltun BaysPiltun Bays

Communities Station Dominant species Biomass, Density, НI 10, 15, 16, 22, 26,

27, 35, 41, 42, 47Kamaka kutchae+Eogammarus kygi

8.2 ± 11.8 7524.6 ± 6076.5

0.92 ± 0.75

III 11, 13, 17, 18, 19, 23, 24, 25, 44, 45, 46

Corbicula sirotski+Macoma balthica+ (Potamocarbula amurensis)

123.2 ±86.7 4234.8 ± 4467.4

1.41 ± 0.68

IV 1P, 2P, 36, 37,38, 39, 40

M. baltica+Liocyma fluctuosa

174.7 ± 289.8 2817.4 ± 1442.5

1.98 ± 0.51

4652.7 ± 3489.8

1.74 ± 0.70

II 1, 2, 5, 6, 7, 8, 12, 14, 21, 28, 29, 30, 31, 32, 43

K. kutchae 4.4 ± 4.4

Piltun Chayvo

Density, Нind/m2

2.28±0.63

2.12±0.6

1.48±1.09

IV 64, 63, 61, 60, 58, 55

Nephtys caeca + Spio filicornis 4.62

9800±19423 1.42±0.80

0.62±0.5

VI 42, 3, 31 N. awatchensis +Amphiporidae gen. sp.

1.82

723±1058 0.76±0.66

III 6, 20, 32 Macoma baltica+Hediste diversicolor

980±96833.8

27.5

II 2, 10, 17, 30, 33

Macoma baltica798±605

I 9, 12, 15, 16, 19, 26, 22, 29,

54, 56, 57

Macoma baltica+Liocyma

fluctuosa

2982±2921

Biomas s , g/m2

89

Community Station Dominant species

мар.41V 41, 4, 5, 13, 27,

7K. kuthae

1138±200

Page 21: Conditions of hydrobiological community formation …...Data: SakhNIRO+ECS Sampling areas 140 145 150 155 160 45 50 55 S a k h a l i n T h e O k h o t s k S e a 1 2 3 4 5 6 7 8 9 10

Data: SakhNIRO+ECS

ConclusionConclusion1. The environmental conditions allow to divide the Bays on three groups. The

Lunskiy affected on the biggest influence of marine water, the Piltun and Nabil – the lowest. Chayvo and Nyyskiy have intermediate position.

2. Three types of water were detected in the bays.3. The bays are geochemical barrier for suspend solids and metals. 4. The hydrodynamic conditions are more important factor, which forms different

types of pelagic and benthic communities. Peculiar phytoplankton communities are formed near the river mouths under an influence of river run-off.

5. Benthic communities in brackish water have higher biomass and species diversity than both fresh and marine communities.

6. Fresh water benthic communities have the widest spreading in Piltun. The brackish water benthic communities covered the most area of Nyyskiy, Chayvo andLunskiy bays.

7. Relatively high content of some trace metals in lagoons are the result of naturalgeochemical conditions with terrestial concentrations of metals.