Member State report / Art8 / 2012 / D11 / Denmark / 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 | D11 Energy, incl. underwater noise |
Member State | Denmark |
Region/subregion | Baltic Sea |
Reported by | Nature Agency |
Report date | 2013-04-29 |
Report access | BALDK_MSFD8bPressures_20130430.xml |
Baltic Sea
GES component |
D11C1 Anthropogenic impulsive sound (11.1, 11.1.1) |
D11C2 Anthropogenic continuous low-frequency sound (11.2, 11.2.1) |
|
---|---|---|---|
Feature |
LevelPressureImpulsive |
LevelPressureContinuous |
ImpactPressureFunctionalGroups |
Assessment Topic |
NoiseImpulsive11_1
|
NoiseContinuous11_2
|
|
Element |
MammalsAll |
||
Element 2 |
|||
ThresholdValue |
To beestablished
|
To be established
|
|
Threshold value/Value unit |
To be established
|
To be established
|
|
Proportion threshold value |
-8888 |
-8888 |
|
Status of criteria/indicator |
NotAssessed |
NotAssessed |
|
Status trend |
Unknown_NotAssessed |
Unknown_NotAssessed |
|
Status confidence |
NotRelevant |
NotRelevant |
|
Description (status of criteria/indicator) |
Level of knowledge is insufficient at present to carry out assessments. |
Level of knowledge is insufficient at present to carry out assessments. |
|
Limitations |
|||
Assessment period |
|||
Description |
Main impulsive sound sources in Danish marine waters are: Pile driving for offshore wind farms, seismic investigations, detonation of dumped munition, offshore construction work other than pile driving, pingers on fishing nets, subbottom profiling and other seabed and depth measurements, military sonar. Knowledge on trends not documentet. Activity levels are possibly increasing |
Main continuous sound sources in Danish marine waters are: Shipping including large commercial vessels, ferries and fishing vessels. These activities are a dominating source to noice relevant for marine mammals. Small motorboats and jet skies may locally be a dominating source in coastal areas. Especially in the area above 10 kHz where the marine mammals have their best hearing. Activity levels are possibly increasing for all mentioned activities. |
Very little specific knowledge on noise impact has been accumulated at present. Studies show a decreased presence of harbour porpoise in some wind farm in the assessment area after construction. If causes are directly or partly related to construction noice or operational noice or other factors have not been documented. |
Input load |
Unknown_NotAssessed
|
Unknown_NotAssessed
|
|
Load unit |
|||
Confidence |
Non related GES component
|
Moderate
|
|
Trends (recent) |
Unknown_NotAssessed |
Unknown_NotAssessed |
|
Trends (future) |
Unknown_NotAssessed |
Unknown_NotAssessed |
|
Description (activities) |
Impulsive sounds are generated form a number of activities. The activities currently in focus in Denmark are construction of offshore windfarms (mono pile driving), various types of seismic surveys and detonation of dumped munition at sea. |
Impulsive sounds are generated form a number of activities. The activities currently in focus in Denmark are construction of offshore windfarms (mono pile driving), various types of seismic surveys and detonation of dumped munition at sea. |
Impulsive sounds are generated form a number of activities. The activities currently in focus in Denmark are construction of offshore windfarms (mono pile driving), various types of seismic surveys and detonation of dumped munition at sea. |
Activity type |
|
|
|
Information gaps |
Specific knowledge in Danish waters on cause and effect of both continuous and impulsive sound is limited. Denmark participates in the BIAS project that aims at measurements and modelling of a Baltic soundscape including Danish Waters. The criterium 11.2.1 is not relevant for the shallow Danish waters. A better criterium therefore needs to be developed. Knowledge on impact of sound on marine mammals and fish need to be accumulated. |
Specific knowledge in Danish waters on cause and effect of both continuous and impulsive sound is limited. Denmark participates in the BIAS project that aims at measurements and modelling of a Baltic soundscape including Danish Waters. The criterium 11.2.1 is not relevant for the shallow Danish waters. A better criterium therefore needs to be developed. Knowledge on impact of sound on marine mammals and fish need to be accumulated. |
Specific knowledge in Danish waters on cause and effect of both continuous and impulsive sound is limited. Denmark participates in the BIAS project that aims at measurements and modelling of a Baltic soundscape including Danish Waters. The criterium 11.2.1 is not relevant for the shallow Danish waters. A better criterium therefore needs to be developed. Knowledge on impact of sound on marine mammals and fish need to be accumulated. |