Monitoring of marine species and habitat
Reefs (1170) are defined as „underwater rocky substrate that arise from the sea floor, situated in sublittoral zone” (Warzocha 2004). Habitat is characterized by high taxonomic diversity of flora and fauna that is distributed in zones depending on depth. In the Polish marine areas, reefs are not rocky but stony, meaning they are formed by pebbles and boulders located in the littoral zone (Interpre…
Habitat 1160 is defined as „an indentations of the coast, sheltered from wave action and being under minor influence of freshwaters, characterized by high diversity of flora and fauna communities” (Warzocha 2004). In the Polish marine areas, only the Puck Lagoon together with part of the Outer Puck Bay with a total area of 21990.1 ha can be considered as habitat 1160 (site central point 18°35,442’…
Habitat 1150 includes „shallow, coastal brackish water basins, of varying salinity, closed or partially separated from the sea” (Zalewska-Gałosz 2010, Interpretation manual… 2013). The criterion distinguishing them from the habitat 1160 (large shallow inlets and bays) is the amount of the river flow and the exchange of marine waters (op.cit.). Also difference between habitat 1150 and habitat 1130…
Habitat 1130 is generally defined as “a lower part of the river limited by brackish water and subjected to tides influence” (Warzocha 2004). In the Polish environmental conditions it refers to “river mouth”. It is an estuary section of lower part of the river flowing into the sea, limited from the landside by backwater caused by flood storm (Bajkiewicz-Grabowska and Mikulski 1993). From the seasid…
According to Warzocha (2004), the underwater sandbanks (1110) are defined as “sandy shoals situated in the sublittoral zone, permanently submerged in water”. They are elongated, curved or irregularly shaped, shallows, permanently submerged and usually surrounded by deeper water. Sublittoral sandbanks are mainly composed of sandy sediments but also of sediments with bigger (boulders, pebbles) or sm…
Bitterling is a small fish belonging to the carp family, reaching up to 9 cm of total length. Its body is flattened laterally and covered with cycloid scales (Photo. 1). Along the axis of the body, there are up to 40 scales. The lateral line passes through only 5-6 scales. During breeding season, bitterlings exhibit sexual dimorphism –…
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