The main result provided by the project PRIME, is the individuation of an Integrated Management System that combine the necessity of environmental protection with the stranded posidonia residues management and their reuse as compost. The project has demonstrated the possibility to reduce the environmental impact of the stranded biomass collected and has enabled to identify sustainable methods of recovery and treatment of stranded posidonia residues. In particular, the project has developed system of reducing the biomass’ high presence of salt and sand, in order to improve the possibility to re-use it as a soil amendment or/and as cultivation substrate in vegetable nursery crops.

The main outputs Report of the project are summarized below:

  • – Report on methodologies for monitoring and mapping of Posidonia meadows and Map of synthesis of Posidonia meadows (In download area you can consult the interactive map);
  • – Report on the analysis conducted on the composting process;
  • – Report on test plots for the horticulture and for the management of urban green;
  • – LCA report for the integrated management system of stranded residues of Posidonia (Download the Scientific article on LCA PRIME -Ecomondo 2013);
  • – Software PRIME;
  • – MANUAL and Operative Guidelines PRIME for the sustainable management and the recovery of stranded Posidonia residues (Read and download the Manual and Guidelines PRIME).

piante ornamentali e piantine orticole da destinare al trapianto, prodotte con ammendante compostato a base di posidonia spiaggiata

Thanks to the increase in chemical and physical properties of Posidonia residues, this biomass can be reused as compost, after a good selection of organic materials to put in the initial mixture. Different types of compost have been tested in different applications:

  • – nursery productions of horticultural plants grown on cultivation substrates made from green compost used as amendment;
  • – production of horticultural species in greenhouses (tomato, lettuce, green bean, rocket and cucumber) grown on substrates made from green compost used as amendment containing residues of Posidonia;
  • – production of ornamental plants in greenhouses;
  • – use of compost from both stranded Posidonia residues and non-compost residues for soil amendment and as organic fertilizer;
  • – Use of Posidonia compost as soil amendment for urban green.

In view of the importance of results achieved in this project and the solution proposed, the beneficiaries of the project have activated contact with many policy makers of national and European level (Puglia Region, Ministry of the Environment Directorate-General for the protection of nature and the sea , VIII Commission (Environment, Land and Public Works) – House of Representatives, 13th Standing Committee (Land, environment , environmental goods) – the Senate, the European Commission DG environment , etc.) in order to divulgate the results obtained from the trials and promote the implementation of Guideline PRIME for a proper management of stranded Posidonia residues. The steps should be:

  • – recognize the validation of green compost made from posidona residues;
  • – National implementation of operative guideline PRIME, and creation of a network of technicians and experts in the matter, as supporters for local and coastal authorities in order to guide and manage the recovery and reuse of stranded posidonia residues;
  • – European implementation of Operative Guidelines and their conversation into technical standard.

Comune di Mola di Bari ECO-logica s.r.l. CNR ISPA ASECO TECOMA