Presentation on theme: "ECOSYSTEM APPROACH TO MARINE SPATIAL PLANNING – POLISH MARINE AREAS AND THE NATURA 2000 NETWORK GEOLOGICAL RESULTS dr Joanna Zachowicz dr Regina Kramarska."— Presentation transcript:
ECOSYSTEM APPROACH TO MARINE SPATIAL PLANNING – POLISH MARINE AREAS AND THE NATURA 2000 NETWORK GEOLOGICAL RESULTS dr Joanna Zachowicz dr Regina Kramarska dr hab. Szymon Uścinowicz mgr Wojciech Jegliński dr Piotr Przezdziecki Ada Rudeńska
PUCK BAY – OKSYWIE TEST SITE SURFACE SEDIMENTS Medium sands, locally with small admixtures of gravel dominate in the depths up to 8–10 m. At a zone of a depth 6–7 m narrow belt of lag deposits (sandy-gravelly) occur. Fine-grained sand dominate at a depths10–20 m. Muddy sands occur in a narrow zone 20–23 m water depth, deeper muddy sediments dominate.
ORGANIC MATTER PUCK BAY – OKSYWIE TEST SITE Content of organic matter in lag deposits and medium- grained sands is extremely low, no higher then 0.1–0.2 %. Fine-grained sands contains organic matter in amount of c. 0.3–0.7%, muddy sands 4–5%, muds 8–11%.
Within the Jastarnia test site medium-grained sand dominate. Fine sand with admixture of silt as well as mud occur at the depths more then 20–25 m. SURFACE SEDIMENTS PUCK BAY – JASTARNIA TEST SITE
Content of organic matter in medium- and fine-grained sands is very low (below 0,5 %) and in fine sand could 1–1,5 %. Only in muds is up to 4,25 %. ORGANIC MATTER PUCK BAY – JASTARNIA TEST SITE
SURFACE SEDIMENTS Map of surface sediments of the Puck Lagoon (Inner Puck Bay) was elaborated on the basis of archival data and data from samples transferred to PGI by the University of Gdańsk and Sea Fisheries Institute. Within the Puck Lagoon fine sand dominate. Medium and coarse sands occur only on the edges of the lagoon. Sandy silt and silty sand occur in deeper areas: Jama Kuźnicka (1), Jama Chałupska (2) and Jama Rzucewska (3). Silty sands occur in the region of the Płutnica outlet (4). INVESTIGATING THE HABITAT OF THE INNER PUCK BAY
ORGANIC MATTER Content of organic matter in fine- medium and coarse- grained sands is very low (below 1,0 %). Sandy silt sediments from Jama Kuźnicka contains organic matter in amount c.12%. INVESTIGATING THE HABITAT OF THE INNER PUCK BAY
INVENTORY OF ARCHIVAL ENVIRONMENTAL DATA PERTAINING TO PMA THAT ARE INDISPESABLE FOR CREATING EUNIS CLASSIFICATION LEVEL 3 HABITAT MAPS BATHYMETRY BASINS: Bornholm Basin (max. depth 95 m), Słupsk Furrow (max. depth 93m), Gotland Basin (max. depth 120 m), Gdansk Basin (max. depth 107). BANKS within shoals: Odra Bank (min. depth 4.5 m), Słupsk Bank (min. depth 8 m), Stilo Bank (min. depth 18 m) Southern Middle Bank (min. depth 14 m) The Polish EEZ covers an area of 30,533 km2 and consists of a number of important bathymetric features.
INVENTORY OF ARCHIVAL ENVIRONMENTAL DATA PERTAINING TO PMA THAT ARE INDISPESABLE FOR CREATING EUNIS CLASSIFICATION LEVEL 3 HABITAT MAPS SURFACE SEDIMENTS Sediments types were distinguished according to Shepard (1963) classification. The sands were additionally divided into 4 sub-types. Boulders and cobbles Gravel, sandy gravel and gravelly sand Coarse and medium sand Fine sands Sand–gravel–mud (mixtite) Sand–silt–clay, silty sand and sandy silt Muds (clayey silt, silty clay, clay) Outcrops of Miocene Antrophogenic deposits On the map 17 granulometric types and sub-types is distinguished:
ORGANIC MATTER INVENTORY OF ARCHIVAL ENVIRONMENTAL DATA PERTAINING TO PMA THAT ARE INDISPESABLE FOR CREATING EUNIS CLASSIFICATION LEVEL 3 HABITAT MAPS Content of organic matter vary from 0.1 to 13.2 % and is strongly related to content of silty and clayey fractions (0.063 mm) and water depth Sandy sediments from 0.1 to 1 % (locally in Gulf of Gdansk reach c. 2-3%). Silty sands and sandy silts 2-5% Muddy sediments (clayey silt, silty clay and clay) higher then 5%, max. up to 10 and 13 %.
SEABED RELIEF depth from 8 to 28 m the area – ca. 110 km 2 ca. 200 sampling sites, only 120 samples were taken: 20 vibrocores 76 grab samples 22 samples by scuba divers STUDIES OF THE SLUPSK BANK BOULDER FIELD HABITATS
1 2 3 SONAR MOSAIC
1 – SEABED WITH GRAVEL, PEBBLES AND BOULDERS BOULDERS
2 – megaripples – coarse sand well sorted megaripples
3 – sandy fields with sandy waves on the gravelly– pebbly cover sandy field gravelly–pebbly cover