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Habitats and biotopes

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    The research work had the aim to obtain a first quantitative information for the characterization of the macrobenthic communities of submarine archaeological park, including those living in the seagrass, and to perform a bionomic map by GIS methods.

  • Mapping of the Vatika Bay seafloor has been conducted in two different periods: in June 2010 and May 2015. The shallow, northern part of the Bay has been mapped in 2010 during the research project "PAVLOPETRI" by means of swath bathymetry (RESON SeaBat 7125 200/400 kHz), side scan sonar (Geoacoustics 100/400 kHz) and pinger (3.5 kHz) subbottom profiler. The deeper seafloor of the Bay has been surveyed in 2015 by means of side scan sonar and chirp subbottom profiling for the purposes of the research project "Environmental Study of Vatika Bay", funded by the Prefecture of Peloponnese. The research vessel "ALKYON" has been used in both cruises. The description of the nature of the seafloor and the habitat mapping has been based mostly on the interpretation of the acoustic-geophysical data and Sentinel-2 satellite imagery, as well as secondarily on the limited sampling performed in the area.

  • The objective of this project was to generate seabed habitat maps for locations with full coverage acoustic datasets to as detailed a hierarchical level as possible within the Marine Habitat Classification for Britain and Ireland (version 04.05), also known as MNCR classification, (Connor et al. 2004). The acoustic data were at various stages of processing and interpretation, therefore the mapping of habitats and biotopes in some areas have required a greater amount of work to reach the same level compared to other areas. The constituent polygons within the habitat/biotope maps are labelled to an appropriate level of the Habitat Classification and translated to the corresponding EUNIS code. In order to generate seabed habitat maps for the areas the data associated with each area were required to undergo some preliminary preparation and processing in order to ensure suitability and compatibly with the mapping methodologies employed. The data were then processed using several techniques: a top-down approach was adopted based on the methods developed by MESH and UKSeaMap and used by EUSeaMap, which utilised the updated seabed substrate information provided by BGS. In addition a bottom up approach was taken to utilise the recently acquired point sample data and bathymetry and backscatter data sets, and this process took an object based approach supplemented by supervised classification and categorisation. Three maps for each MPA proposal have been produced (the level of habitat detail which could be mapped was restricted to level 3 or 4 of the EUNIS classification and level 2 or 3 of the MNCR classification) with associated metadata and peripheral supplementary data to aid in future analysis and interpretation. A confidence assessment using the MESH confidence assessment method has been undertaken for each habitat map produced and certainty of classification maps accompany each habitat map also.

  • The objective of this project was to generate seabed habitat maps for locations with full coverage acoustic datasets to as detailed a hierarchical level as possible within the Marine Habitat Classification for Britain and Ireland (version 04.05), also known as MNCR classification, (Connor et al. 2004). The acoustic data were at various stages of processing and interpretation, therefore the mapping of habitats and biotopes in some areas have required a greater amount of work to reach the same level compared to other areas. The constituent polygons within the habitat/biotope maps are labelled to an appropriate level of the Habitat Classification and translated to the corresponding EUNIS code. In order to generate seabed habitat maps for the areas the data associated with each area were required to undergo some preliminary preparation and processing in order to ensure suitability and compatibly with the mapping methodologies employed. The data were then processed using several techniques: a top-down approach was adopted based on the methods developed by MESH and UKSeaMap and used by EUSeaMap, which utilised the updated seabed substrate information provided by BGS. In addition a bottom up approach was taken to utilise the recently acquired point sample data and bathymetry and backscatter data sets, and this process took an object based approach supplemented by supervised classification and categorisation. Three maps for each MPA proposal have been produced (the level of habitat detail which could be mapped was restricted to level 3 or 4 of the EUNIS classification and level 2 or 3 of the MNCR classification) with associated metadata and peripheral supplementary data to aid in future analysis and interpretation. A confidence assessment using the MESH confidence assessment method has been undertaken for each habitat map produced and certainty of classification maps accompany each habitat map also.

  • The objective of this project was to generate seabed habitat maps for locations with full coverage acoustic datasets to as detailed a hierarchical level as possible within the Marine Habitat Classification for Britain and Ireland (version 04.05), also known as MNCR classification, (Connor et al. 2004). The acoustic data were at various stages of processing and interpretation, therefore the mapping of habitats and biotopes in some areas have required a greater amount of work to reach the same level compared to other areas. The constituent polygons within the habitat/biotope maps are labelled to an appropriate level of the Habitat Classification and translated to the corresponding EUNIS code. In order to generate seabed habitat maps for the areas the data associated with each area were required to undergo some preliminary preparation and processing in order to ensure suitability and compatibly with the mapping methodologies employed. A top-down approach was adopted based on the methods developed by MESH and UKSeaMap and used by EUSeaMap, which utilised the updated seabed substrate information provided by BGS. Three maps for each MPA proposal have been produced (the level of habitat detail which could be mapped was restricted to level 3 or 4 of the EUNIS classification and level 2 or 3 of the MNCR classification) with associated metadata and peripheral supplementary data to aid in future analysis and interpretation. A confidence assessment using the MESH confidence assessment method has been undertaken for each habitat map produced and certainty of classification maps accompany each habitat map also.

  • Acoustic mapping of the seabed of the Menai Strait. Local classification, seperated into acoustic ground characteristics: hard/soft and smooth/rough. Swellies.

  • The purpose of this study was to re-survey six locations on the rocky shore within the Teesmouth and Cleveland Coast European Marine Site which had originally been surveyed in November 2003 in order to make an assessment of these habitats as a food resource for shorebirds. The original survey also provided data on the biotope composition and biodiversity of the site in order to inform Natural England on the status of the large shallow inlets and bays feature of the site.

  • Mapping the distribution of maerl in South Uist, Western Isles was a collaborative study between Scottish Natural Heritage and the BioMar Programme. The survey used acoustic techniques, video drops, ROV, grab samples and diver surveys. The result was a map of predicted biotope distribution.

  • SeaMap were contracted by SNH to review and analyse acoustic data collected from the sea around St Kilda and to interpret these data using ground truth records.

  • The survey of the marine environment around the Isle of Wight has been undertaken as part of the BioMar Project which is funded by the EC through the LIFE Programme. The survey from Bembridge to the Needles took place in June/July 1994. The baseline resource survey was to determine the major habitats present with their distribution.