Member State report / Art8 / 2012 / D7 / Lithuania / Baltic Sea
| Report type | Member State report to Commission |
| MSFD Article | Art. 8 Initial assessment (and Art. 17 updates) |
| Report due | 2012-10-15 |
| GES Descriptor | D7 Hydrographical changes |
| Member State | Lithuania |
| Region/subregion | Baltic Sea |
| Reported by | Environmental Protection Agency |
| Report date | 2013-04-15 |
| Report access | BALLT_MSFD8bPressures_20130423.xml |
Coastal waters (including transitional waters regarding descriptors and associated indicators that is not covered by WFD)
Transitional waters
LT marine waters (all marine waters)
GES component |
D7C1 Permanent alteration of hydrographical conditions (7.1, 7.1.1) |
D7C2 Adverse effects from permanent alteration of hydrographical conditions (7.2, 7.2.1, 7.2.2) |
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Feature |
LevelPressure |
ImpactPressureWaterColumn |
ImpactPressureSeabedHabitats |
ImpactPressureFunctionalGroup |
Assessment Topic |
Hydrological7_1
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HydrologicalWaterColumnHabitats7_2
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HydrologicalSeabedHabitats7_2
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HydrologicalFunctionalGroups7_2
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Element |
Transparency |
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Element 2 |
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ThresholdValue |
-9999
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Threshold value/Value unit |
Not assigned
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Unknown_NotAssessed
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Proportion threshold value |
100 |
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Status of criteria/indicator |
NotAssessed |
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Status trend |
Unknown_NotAssessed |
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Status confidence |
NotRelevant |
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Description (status of criteria/indicator) |
insufficient data
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Limitations |
Hydrographic changes are difficult to assess due to the high dependence of hydrographic conditions on meteorological and other natural phenomena, the significance of which is in many cases decisive.
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Insufficient data
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Assessment period |
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Description |
Spatial change of hydrographic conditions is observed only in local parts of the Lithuanian sea coast close to port hydrotechnical facilities. Existing hydrographic changes do not have a significant impact on the entire condition of the sea coast, it is not appropriate to set GES parameters with threshold values at the current stage.
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Changes in water salinity and temperature affect plankton productivity and fish abundance. Seasonal changes in phytoplankton abundance and communities are influenced by seasonal changes in temperature and light intensity and its penetration into deeper water layers. The inflow of lagoon water int...
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Intense hydrodynamics are limited by habitat distribution: Open wave moraine bottom with Furcellaria lumbricalis, Open wave sandy bottom with Macoma balthica. The abundance / density of mussels may depend on the hydrodynamics and the lithodynamics it affects.
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Temperature affects migrations of birds and fish. Decreasing water temperature and increasing salinity have a positive effect on typical marine fish species, which would reduce the abundance of freshwater species in the sea and vice versa.
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Input load |
75-100%
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25-50%
|
Unknown_NotAssessed
|
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Load unit |
Unknown_NotAssessed
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Confidence |
Low
|
Moderate
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Non related GES component
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Trends (recent) |
Increasing
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Trends (future) |
Increase
|
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Description (activities) |
The main activity of the port, recreation
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Activity type |
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Information gaps |
Insufficient data, it will be assessed in the near future |
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