Browsing HELCOM Manuals and Guidelines by Issue Date

Now showing items 21-40 of 42

    • HELCOM Guidelines for monitoring continuous noise. 

      HELCOM (HELCOM, Helsinki, Finland, 2018)
      Continuous anthropogenic noise may exert a significant pressure on the marine environment due to its constancy and extent over vast areas. Distant ships, wind and rain, are examples of continuous sound sources. Sound from ...

    • Guidelines for monitoring Seal abundance and distribution in the HELCOM area. 

      HELCOM (HELCOM, Helsinki, Finland, 2018)
      HELCOM Recommendation 27-28/2 tasks the HELCOM SEAL Expert Group to develop and coordinate monitoring programmes to, among other things, assess the abundance and distribution, and the trends ofthese parameters of the Baltic ...

    • Guidelines for sampling and determination of dissolved oxygen in seawater. 

      HELCOM (HELCOM, Helsinki, Finland, 2018)
      The dissolved oxygen (DO) content in seawater is controlled by several unrelated processes including exchange with air, metabolism of plants and animals, microbial and chemical decomposition of organic matter, hydrodynamic ...

    • Guideline on the determination of Perfluoroalkylated substances (PFAS) in seawater. 

      HELCOM (HELCOM, Helsinki, Finland, 2018)
      Perfluorooctane sulphonic acid (PFOS), perfluorooctanoic acid (PFOA) and other per- and polyfluoroalkyl substances (PFASs) are considered global environmental contaminants. PFOS and PFOA are chemically and biologically ...

    • Guideline for the determination of heavy metals in sediment. 

      HELCOM (HELCOM, Helsinki, Finland, 2018)
      This Technical note provides advice on the analysis of heavy metals in total marine and coastal sediments and sieved fractions, including sampling and sample handling. The analysis of heavy metals in sediments basically ...

    • Guidelines on transboundary MSP output data structure in the Baltic Sea. 

      HELCOM (HELCOM, Helsinki, Finland, 2019)
      The goal of these Guidelines on transboundary maritime spatial planning (MSP) output data structure (Guidelines) is to facilitate data availability and coherence of MSP, as well as transboundary cooperation under ...

    • Guidelines for coastal fish monitoring. 

      HELCOM (HELCOM, Helsinki, Finland, 2019)
      Coastal fish communities are influenced by a plethora of impacting variables, including human-induced pressures related to overexploitation, climate change, eutrophication, contaminants, habitat degradation, effects of ...

    • HELCOM Indicator Manual. Version 2020-1. 

      HELCOM (HELCOM, Helsinki, Finland, 2020)
      The HELCOM indicators are a critical component of the Baltic Sea Action Plan (BSAP) and its approach to the assessment of good ecological/environmental status (referred to as ‘good status’ from here on) in the marine ...

    • Guidelines for monitoring of radioactive substances. 

      HELCOM (HELCOM, Helsinki, Finland, 2020)
      Routine station network for regular monitoring programme is recommended as indicated in the following list and maps. Sampling frequency is once a year. Additional stations and samples are recommended, and reporting of the ...

    • Marine HNS Response Manual: Multi-regional Bonn Agreement, HELCOM, REMPEC. 

      Alcaro, Luigi; Brandt, Julke; Giraud, William; Mannozzi, Michela; Nicolas-Kopec, Annabelle (Project WestMopoco, 2021)
      Maritime transport is often described as “the backbone of globalized trade and the manufacturing supply chain”, since more than 80% of the global merchandise trade by volume is carried by sea. Some of the goods ...

    • Technical annex on the determination of Per- and polyfluoroalkyl substances (PFASs) in biota. 

      HELCOM Expert Network on Hazardous Substances (EN-HZ) (HELCOM, Helsinki, Finland, 2021)
      (PFAAs) are global environmental contaminants. PFOS and PFOA are chemically and biologically inert and very stable (Poulsen et al. 2005). PFOS meets the P (Persistent) and vP (very Persistent) criteria due to slow degradation. ...

    • Guidelines for Sea-Based Measures to Manage Internal Nutrient Reserves in the Baltic Sea Region. 

      HELCOM (HELCOM, Helsinki, Finland, 2021)
      The aim of these guidelines is to provide guidance for researchers planning to undertake research projects and for operators and environmental managers planning to implement activities designed to reduce the negative impacts ...

    • Guidelines for monitoring of phytoplankton species composition, abundance and biomass. 

      HELCOM (HELCOM, Helsinki, Finland, 2021)
      Long-term monitoring has enabled determination of the annual phytoplankton succession and facilitates the recognizing of aberrant phenomena and their progression in the phytoplankton community (e.g. Hajdu et al. 2006, ...

    • Guidelines for the monitoring of target non-indigenous species using molecular methods. 

      HELCOM (HELCOM, Helsinki, Finland, 2021)
      These guidelines describe the use of molecular methods for detection of target non-indigenous invasive species. The “target species” are those that “meet specific criteria indicating that they may impair or damage the ...

    • Guidelines for the monitoring of marinas. 

      HELCOM (HELCOM, Helsinki, Finland, 2021)
      NIS monitoring in major commercial ports has been guided by the Joint Harmonized Procedure of the HELCOM and OSPAR (HELCOM & OSPAR, 2013). However, monitoring of marinas has received less attention until now. PVC fouling ...

    • HELCOM Guidelines for monitoring beach litter. 

      HELCOM (HELCOM, Helsinki, Finland, 2021)
      Litter on the coastline is one of the most obvious signs of marine litter. Surveys of litter on the beach allow for a detailed evaluation of litter in terms of amounts and composition. Its strength lies in the provision ...

    • Guidelines for the monitoring of mobile and sessile epifauna. 

      HELCOM (HELCOM, Helsinki, Finland, 2021)
      The Joint Harmonized Procedure by HELCOM and OSPAR (HELCOM & OSPAR, 2013) has been used to monitor mobile and sessile epifauna among other taxa, but only in port areas, and further observations on the presence of these ...

    • HELCOM Manual on Co-operation in Response to Marine Pollution: within the framework of the Helsinki Convention. 

      HELCOM (HELCOM, Helsinki, Finland, 2021)
      According to the Helsinki Convention the Contracting Parties shall agree bi- or multilaterally on those regions of the Baltic Sea, in which they act together. This is to maintain ability to respond to spillages of oil and ...

    • Guidelines for monitoring of mesozooplankton. 

      HELCOM (HELCOM, Helsinki, Finland, 2021)
      The mesozooplankton is a size fraction of zooplankton community (0.2 to 20 mm) that is addressed in the HELCOM- monitoring guidelines. Mesozooplankton constitute an important part of zooplankton in the pelagic food webs, ...

    • Guidelines for monitoring seabirds at sea. 

      HELCOM (HELCOM, Helsinki, Finland, 2021)
      The efforts of HELCOM to conserve the Baltic Sea environment are aggregated in its Baltic Sea Action Plan. Measures to guarantee the environmental integrity of the Baltic Sea need to be backed by science-based environmental ...