The input of species from specific sources concerns collecting information on occurance of non-indigenous species based on the information provided by shipowners in the application reffered to in the Article 20d(1) of the Act of 16 March 1995 on the prevention of the pollution of marine waters from ships (O.J. 2017, item 2000 as amended) to grant to a ship on a voyage between specified ports or locations; or to a ship which operates exclusively between specified ports or locations an exempion reffered to in Regulation A-4 of the Annex to the International Convention for the Control and Management of Ships' Ballast Water and Sediments adopted on 13 February 2004 in London.

The programme is conducted since 2018 and aims to determine the impact of non-indigenous species on the functioning of the ecosystem and is based on the collection of information on the abundance and biomass of non-indigenous species detected within the monitoring of mobile species, pelagic and benthic habitats.

The community characteristics is monitored each year in accordance with the HELCOM methodology, including parameters necessary for the assessment of benthic habitats. Monitoring includes sampling of macrozoobenthos at 16 stations and macrophyte and angiosperms at places of occurrence within PMA. For the transitional and coastal waterbodies monitoring will be carried out for 19 monitoring points in 2020-2021 and 11 monitoring points in 2022-2025 in accordance with the WFD monitoring programme, carried out under the surface water monitoring programme for the years 2020-2025 ("Strategic State Environmental Monitoring Programme for the years 2020-2025"), approved by the Competent Minister of Climate in 2020 and the surface water executive programme for a specific year of research approved annually by the Chief Inspector of Environmental Protection

The abundance and/or biomass of species is monitored each year in accordance with the HELCOM methodology, including parameters necessary for the assessment of benthic habitats. Monitoring includes sampling of macrozoobenthos at 16 stations and macrophyte and angiosperms at places of occurrence within PMA. For the transitional and coastal waterbodies monitoring will be carried out for 19 monitoring points in 2020-2021 and 11 monitoring points in 2022-2025 in accordance with the WFD monitoring programme, carried out under the surface water monitoring programme for the years 2020-2025 ("Strategic State Environmental Monitoring Programme for the years 2020-2025"), approved by the Competent Minister of Climate in 2020 and the surface water executive programme for a specific year of research approved annually by the Chief Inspector of Environmental Protection

The ichthyological monitoring of the Polish Exclusive Economic Zone in the deepwater zone of Polish marine area has been carried out as a part of national environmental monitoring since 2011, based on data from BITS (Baltic International Trawl Surveys). BITS consist of cruises of particular Baltic countries being temporally and spatially coordinated by ICES. BITS methodology establishes use of standarized bottom trawl of the same design for scientific catches and use of the same research method for hauling sites sampling, data collection and uploading of collected data to the ICES common database - DATRAS, supplemented with measurement and ichthyological analysis of all fish species (including non-commercial).

Monitoring in transitional waterbodies is carried out once every 3 years, except for Puck Lagoon, Vistula Lagoon and Puck Bay, where monitoring is conducted annually. Fish monitoring in transitional waterbodies includes an analysis of the following elements: • determination of weight and abundance of all fish species present in the catch; • ichthyological analysis of a representative sample of all fish species present in the catch, taking into account their length, individual weight, sex, gonad maturity stage, stomach degree fullness and age of individual fish. The monitoring also includes the analysis of physico-chemical water parameters necessary for assessing the ecological status of transitional waters.

Fish monitoring in coastal waterbodies includes an analysis of the following elements: • determination of weight and abundance of all fish species present in the catch; • ichthyological analysis of a representative sample of all fish species present in the catch, taking into account their length, individual weight, sex, gonad maturity stage, stomach degree fullness and age of individual fish. The monitoring also includes the analysis of physico-chemical water parameters necessary for assessing the ecological status of coastal waters.

Fish monitoring in offshore shallow water areas includes an analysis of the following elements: • determination of weight and abundance of all fish species present in the catch; • ichthyological analysis of a representative sample of all fish species present in the catch, taking into account their length, individual weight, sex, gonad maturity stage, stomach degree fullness and age of individual fish. The monitoring also includes the analysis of physico-chemical water parameters.

Monitoring programme of pelagic habitats – community characteristics includes the determination of the characteristics and variability of phytoplankton and zooplankton communities in PMA. Monitoring is carried out annually in 10 locations in accordance with the HELCOM guidelines. For the transitional and coastal waterbodies monitoring will be carried out for 19 monitoring points in 2020-2021 and 11 monitoring points in 2022-2025 in accordance with the WFD monitoring programme, carried out under the surface water monitoring programme for the years 2020-2025 ("Strategic State Environmental Monitoring Programme for the years 2020-2025"), approved by the Competent Minister of Climate in 2020 and the surface water executive programme for a specific year of research approved annually by the Chief Inspector of Environmental Protection.