UNDER EMBARGO - This dataset contains marine organic matter source samples, artificial mixtures of known composition, and compound-specific nitrogen stable isotope data of amino acids (δ¹⁵N-AA). Source materials include phytoplankton, zooplankton, and faecal pellets from the marine fouling species Mytilus edulis and Metridium senile.Samples were collected and processed in the laboratory under controlled conditions. Artificial mixtures were prepared by combining source materials in defined proportions to generate experimental samples representing multiple marine organic matter source combinations. Metadata describing sample collection, preparation, and mixture composition are included.Compound-specific nitrogen isotope ratios of individual amino acids were measured using stable isotope analysis. The dataset includes isotopic measurements for all source samples and artificial mixtures, along with associated metadata required to document sampling, laboratory preparation, and analytical procedures.

The law of 13 June 1969 defines “Belgian Continental Shelf” as follows: the seabed and the subsoil of the marine areas adjacent to the Belgian coast but beyond the Belgian territorial sea.

The Royal Decree of 20 March 2026 establishing a marine spatial plan defines Potential Expansion Port of Ostend Art. 16. § 2, Potential Expansion Port of Zeebrugge Art. 16. § 3 Please refer to the Belgian official gazette ("Moniteur belge/Belgisch Staatsblad") for official reference information.

The Royal Decree of 20 March 2026 establishing a marine spatial plan defines Eastern Zone Art. 12. § 1, Princess Elisabeth Zone - Noordhinder North Art. 12. § 2.2a°, Princess Elisabeth Zone - Noordhinder South Art. 12. § 2.2b°, Princess Elisabeth Zone - Fairybank Art. 12. § 2.3°, Electricity Transmission Zone Art. 12. § 4, Safeguard Area Eastern Zone Art. 12. § 5, Cable Corridors Art. 13. § 1 Please refer to the Belgian official gazette ("Moniteur belge/Belgisch Staatsblad") for official reference information.

The Royal Decree of 20 March 2026 establishing a marine spatial plan defines Sand and Gravel Extraction_Sector 1a Art. 19. § 1.1°, Sand and Gravel Extraction_Sector 4d Art. 19. § 1.10°, Sand and Gravel Extraction_Sector 5 Art. 19. § 1.11°, Sand Extraction_Sector 2kb Art. 19. § 1.2°, Sand Extraction_Sector 2br Art. 19. § 1.3°, Sand Extraction_Sector 2od Art. 19. § 1.4°, Sand and Gravel Extraction_Sector 3a Art. 19. § 1.5°, Sand and Gravel Extraction_Sector 3b Art. 19. § 1.6°, Sand and Gravel Extraction_Sector 4a Art. 19. § 1.7°, Sand and Gravel Extraction_Sector 4b Art. 19. § 1.8°, Sand and Gravel Extraction_Sector 4c Art. 19. § 1.9°, Extraction Search Zone Art. 19. § 4 Please refer to the Belgian official gazette ("Moniteur belge/Belgisch Staatsblad") for official reference information.

The Royal Decree of 20 March 2026 establishing a marine spatial plan defines Measurement Poles Art. 25. § 2 Please refer to the Belgian official gazette ("Moniteur belge/Belgisch Staatsblad") for official reference information.

This dataset represents the exact location of disused telecommunication cables installed in the Belgian Part of the North Sea.

This dataset represents the location of the Princess Elizabeth zone in the Belgian Part of the North Sea as described in the Royal Decree of May 22th, 2019, establishing a marine spatial plan for the period 2020-2026. Art. 8. § 3.

This dataset represents the exact location of electrical cables installed in the Belgian Part of the North Sea, including these for for the wind farms.

The Royal Decree of 20 March 2026 establishing a marine spatial plan defines Monitoring Area Thorntonbank Art. 23. § 10.1°, Monitoring Area Gootebank Art. 23. § 10.2°, Scientific Research Zone Art. 23. § 3, Search Zone for Scientific Research Reserve Art. 23. § 6, Zone Accessible for Scientific Research 1 Art. 23. § 8.1°, Zone Accessible for Scientific Research 2 Art. 23. § 8.1°, Calibration Area for Acoustic Instruments Art. 23. § 9 Please refer to the Belgian official gazette ("Moniteur belge/Belgisch Staatsblad") for official reference information.