Results of Monitoring at Olkiluoto in 2006 - Environment (pdf) - Posiva

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4665Substance matter, mg/l432SEA03SEA05SEA06SEA07SEA08SEA09SEA10102004 2005 2006Figure 34. The concentrations of substance matter (mg/l) at the sampling locationsduring the open water season. Water columns 0-10 m in locations SEA03, 06 and 10,and 0-5.5, 7, 9, and 8 m for the rest, respectively (Turkki 2007).VegetationA number of survey sites have been established as part of the nuclear power plant'smonitoring programme for the monitoring of marine vegetation. Phytoplankton is sampledannually on the water quality monitoring sites. Macrophytes growing at sea bottomare observed by divers using line transects. Also point survey methods will be used tomonitor any changes in the annual cycle of the vegetation. The survey interval forPosiva's needs is 5-10 years, and is defined by Posiva's activities and TVO's ongoingmonitoring programme.The primary production of phytoplankton was measured eight times by radiocarbonmethod (C-14) in April-September in the production layers of SEA06 and SEA08. Thewater column samples were analysed for total P, phosphate P, N compounds, chlorophyll-a,amount and composition of phytoplankton and the production capacity ofplankton. In order to establish the annual variation in phytoplankton, the samples takenat various sampling instances at SEA08 were microscopied separately. On other samplingsites, the summer season phytoplankton samples were combined.At the beginning of May it was sunny and warm, and the conditions for primary productionof phytoplankton were good. The P concentrations were on average level. Theseasonal variation of phytoplankton biomasses by species on SEA08 is presented inTable J-6 and Fig. 35.
47908070605040302010010/04/200724/04/200708/05/200722/05/200705/06/200719/06/200703/07/200717/07/200731/07/200714/08/200728/08/2007% of biomass11/09/200725/09/2007CyanophyceaeCryptoph.Chrysoph.Prymnesioph.Bacillarioph.Prasinoph.MonadsDinoph.Figure 35. Variation of dominating phytoplankton species by sampling date at SEA08in 2006. Species with minor shares have been removed for clarity. Figure after Turkki(2007).Due to the fact that the cooling water discharge area with its surroundings stays openalso during the winter, considerable amounts of cool season planktons (Bacillariophyceaeand Dinophyceae) grow in the waters even in mid-winter. The abundant springtimeproduction of Bacillariophyceae therefore usually starts at least a month earlierthan in other coastal water areas and the growing season is longer. The springtimesampling caught the maximum springtime bloom in 2006, and the total biomass inApril-May was considerably greater than in previous years. The average biomass onSEA08 during the whole growing season (1787 mg/m 3 ) was over 2 times that of 2005(Fig. 36), and also larger than the 5-year averages from 1985 to 2004. Annual differenceshave been great since 1985 (370-1830 mg/m 3 ). The increase of growing seasonbiomasses have mostly been due to mild winters (extending the growing season) andgeneral eutrophication of the Baltic Sea.
Page 1 and 2: Working Report 2007-52Results of Mo
Page 3 and 4: ABSTRACTThis Working Report present
Page 5: 1TABLE OF CONTENTSABSTRACTTIIVISTEL
Page 9 and 10: 52 MONITORING SYSTEM AND SCHEDULETh
Page 11 and 12: 73 RESULTS AND DISCUSSION3.1 Landsc
Page 13 and 14: 9Table 4. Distribution of Olkiluoto
Page 15 and 16: 113.2 Input to Biosphere Modelling3
Page 17 and 18: 13The soils were acid. The organic
Page 19: 15Table 8. Total concentrations (%)
Page 22 and 23: 18Soil MicrobesCarbon (C) and nitro
Page 24 and 25: 201.2Norway spruceScots pine10.8mg/
Page 26 and 27: 22Figure 13. The biomass distributi
Page 28 and 29: 24Table 13. Mean carbon content (g/
Page 30 and 31: 26700600500400300200Open areaForest
Page 32 and 33: 28fall (Table E-4) was lower than t
Page 34 and 35: 30160140120Percolation waterStand t
Page 36 and 37: 3265pH432200420052006Ref. 1998-2000
Page 38 and 39: 34Total nitrogen (Tables F-5 and F-
Page 40 and 41: 36DefoliationThe degree of defoliat
Page 42 and 43: 38302520Temperature at 9 mPAR at 24
Page 44 and 45: 40Exceptionally, only two raccoon d
Page 46 and 47: 42The discharge and the nutrients o
Page 48 and 49: 44In general, the open water season
Page 52 and 53: 48Biomass, mg/m32000180016001400120
Page 54 and 55: 50450040003500Individuals/m23000250
Page 56 and 57: 5212000kg100008000600040002000Balti
Page 58 and 59: 54Figure 41. Noise levels (L AT , d
Page 60 and 61: 56phenomenon, especially in dry sum
Page 62 and 63: 58On the southern part of the islan
Page 64 and 65: 60The water quality of the monitore
Page 66 and 67: 62Kaunisto, S. & Moilanen, M. 1998.
Page 68 and 69: 64Starr, M. 1991. Soil formation an
Page 70 and 71: 66Table A-1 cont'd. Monitoring site
Page 72 and 73: 68Table A-1 cont'd. Monitoring site
Page 75 and 76: 71APPENDIX B: FOREST AND MIRE MONIT
Page 77 and 78: 73comprehensive measurement of fore
Page 79 and 80: 75Figure B-4. Top: FIP10, middle: F
Page 81 and 82: 77Table B-3. Coverage (%) and numbe
Page 83: 79Figure B-5. Litterfall samplers (
Page 86 and 87: Table C-2. Radionuclides in air in
Page 88 and 89: 84Table C-3. Radionuclides in milk
Page 90 and 91: 86Table C-7. Radionuclides in fish
Page 93: APPENDIX D. RESULTS FROM SOIL MICRO
Page 96 and 97: Table E-3. Annual amount of precipi
Page 98 and 99: 94Table E-5. Annual bulk deposition
Page 100 and 101:
96Table F-3. Mean pH and dissolved
Page 102 and 103:
98Table F-11. Mean calcium (Ca, mg/
Page 104 and 105:
100Table F-19. Mean silicon (Si, mg
Page 106 and 107:
102
Page 108 and 109:
104
Page 110 and 111:
106
Page 112 and 113:
108Table J-3. The concentrations of
Page 114 and 115:
110Table J-9. Primary production (m
Page 116:
112Table K-2. Chemical analyses of
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Results of Monitoring at Olkiluoto in 2006 - Environment (pdf) - Posiva

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