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Norway - Environmental services - Re-mapping of eel grass locations in Ytre Oslofjord.

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Marine underwater beds dominated by ordinary ålegrasZosteramarina was mapped in the Oslo Fjord under the National Programme for Mapping Biological Diversity & ndash; coast, in the period 2007-2010.In recent times several of these have been re-mapped, but there are still a number of locations where no status and development have been known since then. The aim of this notice is to increase the knowledge basis for the development and condition of habitual weeds and contribute to the quality variation of the localiteteri Ytre Oslofjord (the Swedish border to Agder and outside the Dream Threshold). There shall also be a basis for future assessments of the development based on the use of new methodology. The starting point is the premises thatallers are registered in the Nature Base and have not been examined since 2012.Within the nature type of breeding communities there are different designs, in this work it is the formulation "Ordinary breeds" that shall be examined. Locations within the value categories are very important and important shall be included in the surveys. In Naturbase approx. 270 locations are registered with normal breeding in these two value categories. Some meadows may be too small to be able to condition classification, or may have disappeared. Some locations can be excluded because the area is dismodeled. Previously mapped eel grass scaling survey fields and mapping and condition classification sets methodology monitoring and calculation of the breed index described in Guidelines 02:2018 (The Directorate's Water Directive 2018). In addition the locality ́s distribution shall be registered and any changes in the size of the school grass locations shall be assessed. A selection of 20% of the examined locations shall, in addition, be mapped in accordance with the Environment Agency ́s instructions for mapping types of marine nature in accordance with nature in Norway (NiN). Changes/development shall be documented and described and the locality condition classification is given in accordance with the Water Regulations. The estimated budget for the surveys in 2026 is NOK 100,000,000. 2 300 000,-

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