ECOSYSTEM APPROACH TO MARINE SPATIAL PLANNING – POLISH MARINE AREAS AND THE NATURA 2000 NETWORK...

ECOSYSTEM APPROACH TO MARINE SPATIAL PLANNING – POLISH MARINE AREAS AND THE NATURA 2000 NETWORK

GEOLOGICAL RESULTS

dr Joanna Zachowiczdr Regina Kramarskadr hab. Szymon Uścinowiczmgr Wojciech Jeglińskidr Piotr PrzezdzieckiAda 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 SEDIMENTSMap 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

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2

3

4

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 PMATHAT 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 PMATHAT 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 PMATHAT 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 km2

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

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3

STUDIES OF THE SLUPSK BANK BOULDER FIELD HABITATS

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