https://ckan.publishing.service.gov.uk/feeds/custom.atom?UKLP=Truedata.gov.uk - Custom query2024-03-28T09:15:04.733550+00:00dgupython-feedgenRecently created or updated datasets on data.gov.uk. Custom query: 'sound bar reviews'https://ckan.publishing.service.gov.uk/dataset/c5f96b51-38ec-42a0-af58-e43bfe12734bSpecies point records from 1996 MNCR Deer Sound and Wide Firth (Orkney) littoral survey2018-05-17T12:12:37.592368+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596.2015-12-15T20:12:43.501015+00:00https://ckan.publishing.service.gov.uk/dataset/9b5155e2-931b-4a63-95f8-427b93bc3750Habitat point records from 1974 ITE Shetland sublittoral survey2018-05-17T12:14:21.014580+00:00Sublittoral Biota - Part 6.4: Part 6 is a descriptive report of the work undertaken using diving transects at OS grid intercepts of the coast. The work is more clearly described in Earll, 1982. These reports present a summary and bibliography of the marine biological information on Shetland presently available, commencing with work which began in the 19th century. Survey methods are then described and full site descriptions provided. The selection of sublittoral survey sites and methods of data analysis are explained. (Indicator Species Analysis was used to provide a classification and ordination of sites). The sublittoral habitats are divided into 4 main types, these being further subdivided in relation to various environmental factors. Infralittoral rock includes exposed, moderately exposed and sheltered sites, shaded cliffs, crevice and under-boulder faunas and kelp forest. Circalittoral rock communities are covered and a number of sediment habitats with characteristic infralittoral and circalittoral communities and the communities of coarse sands and gravels and of muddy shell gravels are also described. Finally the Modiolus communities are noted. The 3 sea urchin populations associated with rocky substrata in Shetland are examined, and a study on the marine fauna of Laminaria holdfasts described. There is a species list based on part of the information available; the part covering Porifera and Cnidaria is given. In the discussion, an evaluation of the methods adopted by the survey is put forward to explore their potential. The advantages of the random stratified sampling approach to site selection and the Indicator Species Analysis of data are presented and the drawbacks of the approach taken examined. The conclusion is that the basic science behind both the sampling strategy and the computor based methods was sound and the job specification of the ITE survey was fulfilled. It is recommended that the data collected should be catalogued and stored safely for future survey use and that more use should be made of large scale coastal analysis for site selection in sampling programmes and for facilitating comparisons between coastal regions. The drawbacks of the use of subjective judgements in field site selection and estimation of site conservation values is noted and the need to document such information. Sites of marine conservation interest in Shetland are reviewed for the sublittoral environment. The geographical position of Shetland, where northern and southern species both reach their limits of distribution, is considered to be of importance. The effects of glaciation, presence of deep water close inshore and extreme range of coastal environments (and wave exposure) also contribute to the interest of the area. The report concludes that few coastal regions in the British Isles combine such a high density of potentially conservable natural environment which is, as yet, reasonably unspoilt by human activities and blessed with such a wide range of interesting features. Coastal Habitats - Physical Characteristics - Part 6.1: A set of non-selective regular sampling points on the coast of Shetland were investigated and this report gives a method to generalise from these to other points of interest using clearly repeatable criteria. The aim of this exercise was to `provide a classification of the Shetland coast using these criteria to provide a sampling and intellectual framework for describing the coastal biology of Shetland and as a basis for monitoring the effects of oil development`. Every intercept of the 1 km OS grid was used as a sample point. One hundred and six attributes in 17 different categories were used to determine the coastal type at 1723 sample points. Analysis of results was undertaken by Recipricol Averaging and Indicator Species Analysis. Eight coastal types were determined, described and mapped. There is a key to the 8 coastal types. Reaches were chosen to obtain a representative sample of the various conditions on mainland and tended towards areas where a diverse fauna might be expected. Work was undertaken by staff from the Marine Biological Association of the United Kingdom. Records currently considered sensitive have been removed from this dataset.2015-12-15T20:13:24.848328+00:00https://ckan.publishing.service.gov.uk/dataset/c822eca9-5991-40c3-ac1c-523767ad9795Habitat point records from 1996 MNCR Wyre, Eynhallow and Rousay Sounds (Orkney) sublittoral survey2018-05-17T12:32:56.406572+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596. Records currently considered sensitive have been removed from this dataset.2015-12-15T20:20:20.794441+00:00https://ckan.publishing.service.gov.uk/dataset/00edceda-7fcc-4c99-b3c7-9c08a30d92c8Habitat point records from 1995 MNCR Shapinsay Sound and Wide Firth (Orkney) survey2018-05-17T12:33:16.959321+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596. Records currently considered sensitive have been removed from this dataset.2015-12-15T20:20:28.140771+00:00https://ckan.publishing.service.gov.uk/dataset/4be22c63-c0f9-4838-bc22-87b20dd7be2aHabitat point records from 1996 MNCR Deer Sound (Orkney) sublittoral survey2018-05-17T12:33:21.471947+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596. Records currently considered sensitive have been removed from this dataset.2015-12-15T20:20:30.103681+00:00https://ckan.publishing.service.gov.uk/dataset/b0bd7959-7f9e-4e63-96ef-59a5f95b2e12Habitat point records from 1995 MNCR Wyre, Eynhallow and Rousay Sounds littoral survey2018-05-17T12:33:26.199332+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596.2015-12-15T20:20:31.917930+00:00https://ckan.publishing.service.gov.uk/dataset/94e99a88-a346-44b2-b18a-19f340b9dcdaHabitat point records from 1996 MNCR Deer Sound and Wide Firth (Orkney) littoral survey2018-05-17T12:33:30.722527+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596.2015-12-15T20:20:33.723728+00:00https://ckan.publishing.service.gov.uk/dataset/78d46c6e-de73-4dc6-bc55-153c643dec17Species point records from 1974 ITE Shetland sublittoral survey2018-05-17T12:35:15.877207+00:00Sublittoral Biota - Part 6.4: Part 6 is a descriptive report of the work undertaken using diving transects at OS grid intercepts of the coast. The work is more clearly described in Earll, 1982. These reports present a summary and bibliography of the marine biological information on Shetland presently available, commencing with work which began in the 19th century. Survey methods are then described and full site descriptions provided. The selection of sublittoral survey sites and methods of data analysis are explained. (Indicator Species Analysis was used to provide a classification and ordination of sites). The sublittoral habitats are divided into 4 main types, these being further subdivided in relation to various environmental factors. Infralittoral rock includes exposed, moderately exposed and sheltered sites, shaded cliffs, crevice and under-boulder faunas and kelp forest. Circalittoral rock communities are covered and a number of sediment habitats with characteristic infralittoral and circalittoral communities and the communities of coarse sands and gravels and of muddy shell gravels are also described. Finally the Modiolus communities are noted. The 3 sea urchin populations associated with rocky substrata in Shetland are examined, and a study on the marine fauna of Laminaria holdfasts described. There is a species list based on part of the information available; the part covering Porifera and Cnidaria is given. In the discussion, an evaluation of the methods adopted by the survey is put forward to explore their potential. The advantages of the random stratified sampling approach to site selection and the Indicator Species Analysis of data are presented and the drawbacks of the approach taken examined. The conclusion is that the basic science behind both the sampling strategy and the computor based methods was sound and the job specification of the ITE survey was fulfilled. It is recommended that the data collected should be catalogued and stored safely for future survey use and that more use should be made of large scale coastal analysis for site selection in sampling programmes and for facilitating comparisons between coastal regions. The drawbacks of the use of subjective judgements in field site selection and estimation of site conservation values is noted and the need to document such information. Sites of marine conservation interest in Shetland are reviewed for the sublittoral environment. The geographical position of Shetland, where northern and southern species both reach their limits of distribution, is considered to be of importance. The effects of glaciation, presence of deep water close inshore and extreme range of coastal environments (and wave exposure) also contribute to the interest of the area. The report concludes that few coastal regions in the British Isles combine such a high density of potentially conservable natural environment which is, as yet, reasonably unspoilt by human activities and blessed with such a wide range of interesting features. Coastal Habitats - Physical Characteristics - Part 6.1: A set of non-selective regular sampling points on the coast of Shetland were investigated and this report gives a method to generalise from these to other points of interest using clearly repeatable criteria. The aim of this exercise was to `provide a classification of the Shetland coast using these criteria to provide a sampling and intellectual framework for describing the coastal biology of Shetland and as a basis for monitoring the effects of oil development`. Every intercept of the 1 km OS grid was used as a sample point. One hundred and six attributes in 17 different categories were used to determine the coastal type at 1723 sample points. Analysis of results was undertaken by Recipricol Averaging and Indicator Species Analysis. Eight coastal types were determined, described and mapped. There is a key to the 8 coastal types. Reaches were chosen to obtain a representative sample of the various conditions on mainland and tended towards areas where a diverse fauna might be expected. Work was undertaken by staff from the Marine Biological Association of the United Kingdom. Records currently considered sensitive have been removed from this dataset.2015-12-15T20:21:14.315733+00:00https://ckan.publishing.service.gov.uk/dataset/f6415e14-f429-4c9a-bdd5-576cb78e2453Habitat point records from 1997 Unicomarine Hoy Sound and Shapinsay Sound sublittoral sediment survey2018-05-17T13:02:03.984689+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596.2016-02-04T13:22:44.412439+00:00https://ckan.publishing.service.gov.uk/dataset/d4daba8e-3973-4b00-bd1d-e3d28d0a7904Habitat point records from 1984-85 McGuigan Plymouth Sound sublittoral nudibranch survey2018-05-17T13:02:53.264389+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596.2016-02-04T13:23:00.069913+00:00https://ckan.publishing.service.gov.uk/dataset/7c57c63b-eaf4-47bb-896a-3ae1aebcdabeSpecies point records from 1997 Unicomarine Hoy Sound and Shapinsay Sound sublittoral sediment survey2018-05-17T13:20:36.691653+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596. Records currently considered sensitive have been removed from this dataset.2016-02-04T13:28:28.492674+00:00https://ckan.publishing.service.gov.uk/dataset/783c8fa0-d3dc-444d-8383-f883e7d92f85Species point records from 1984-85 McGuigan Plymouth Sound sublittoral nudibranch survey2018-05-17T13:21:28.618373+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596.2016-02-04T13:28:44.723339+00:00https://ckan.publishing.service.gov.uk/dataset/9e3a1422-b814-44e1-bb65-f78e589dd144Species point records from 1996 MNCR Wyre, Eynhallow and Rousay Sounds (Orkney) sublittoral survey2018-05-17T13:26:34.420121+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596. Records currently considered sensitive have been removed from this dataset.2015-12-15T20:12:29.130931+00:00https://ckan.publishing.service.gov.uk/dataset/ccdfe5a3-396f-493b-935b-8ff71584ae69Species point records from 1995 MNCR Shapinsay Sound and Wide Firth (Orkney) survey2018-05-17T13:26:58.859922+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596. Records currently considered sensitive have been removed from this dataset.2015-12-15T20:12:37.314421+00:00https://ckan.publishing.service.gov.uk/dataset/e9d28c1e-5281-43c2-9638-29315ef509c5Species point records from 1996 MNCR Deer Sound (Orkney) sublittoral survey2019-02-21T11:59:20.422256+00:00This survey was carried out as part of the Marine Nature Conservation Review (MNCR). The MNCR was started in 1987 by the Nature Conservancy Council and subsequent to the Environment Protection Act 1990, was undertaken by JNCC on behalf of the conservation agencies up to its completion in 1998. The MNCR was initiated to provide a comprehensive baseline of information on marine habitats and species, to aid coastal zone and sea-use management and to contribute to the identification of areas of marine natural heritage importance throughout Great Britain. Data collected through the MNCR was stored in the Marine Recorder database, and has been extracted from Marine Recorder to produce this dataset. For more details, see http://jncc.defra.gov.uk/page-1596. Records currently considered sensitive have been removed from this dataset.2015-12-15T20:12:39.370465+00:00https://ckan.publishing.service.gov.uk/dataset/682f4434-ca3b-4668-a6cd-16d5a2b042c7JNCC's Marine Monitoring Method Finder2020-06-11T16:15:49.796980+00:00The Marine Monitoring Method Finder brings together a wide range of monitoring guidelines and procedures, and makes them readily available for use via a spreadsheet tool and search bar on our website.
These guidelines and procedures represent standards and advice recognised by the JNCC. All guidelines and procedures are published by government agencies, expert panels, collaborative working groups, international standards groups and universities. The vast majority have been reviewed by multiple government agencies and industry experts. Where gaps exist in this knowledge, JNCC is developing revisions to fill the gaps.
Please note that the Marine Monitoring Method Finder was last updated in 2017, prior to the launch of JNCC's new website. Whilst every effort has been made to redirect material to the relevant content on the new website, some of the links may no longer work. It will be updated in due course to reflect the new content.2016-06-20T13:32:54.281294+00:00https://ckan.publishing.service.gov.uk/dataset/13391e28-f2c1-494c-a294-d2cb2596e727A decision framework to attribute atmospheric nitrogen deposition as a threat to or cause of unfavourable habitat condition on protected sites2020-06-11T16:30:12.917683+00:00This report describes the development of a decision framework to provide a means of attributing nitrogen deposition as a threat to, or cause of, unfavourable habitat condition on protected sites.
The UKâs semi-natural habitats exceed their atmospheric nitrogen (N) deposition critical load ranges across much of their area, and survey data suggests there are adverse impacts of this excess N deposition. However, information from Common Standards Monitoring (CSM) of protected sites does not appear to identify N deposition as a potential cause of unfavourable condition at many sites. A decision framework was developed to provide a means of attributing N deposition as a threat to, or cause of, unfavourable habitat condition on protected sites. The framework provides a practical methodology for assessing the impacts of N deposition on protected sites in an objective way, which was previously lacking. It is based on a sound conceptual approach, and is both robust and flexible enough to cope with additional information.
The framework is described in the main report, whilst the detailed methodology is included in the supporting annexes.
* Annex 1: Strength of âtheoretical/nationalâ evidence (Work Package 1 report) â this describes in detail the scoring of national/theoretical evidence to derive an Exceedance Score.
* Annex 2: Strength of site-based evidence (Work Package 2 report) â this describes in detail the site-based evidence used to derive a score for strength of site-based evidence (Factor 2)
* Annex 3: Matrix design, testing and recommendations (Work Package 3 report) â this describes the version of the matrix as recommended by the contractors, provides recommendations for future work (the key recommendations from this are summarised in this main report), and briefly describes the testing undertaken as part of Work Package 3.
The accompanying zipped folder includes:
* Factor 1 spreadsheet (Exceedance Score) â this spreadsheet incorporates the elements of WP1 which generate the exceedance score for each CSM habitat (and sub-habitat) based on a user-defined deposition; guidance for utilising the spreadsheet is given in Annex 1.
* Factor 2 spreadsheets (N indicators) â these spreadsheets display the results of a review of all targets for each CSM habitat and the identification of strong and weak N indicators; guidance for the spreadsheets is given in Annex 2.
* Final assessment matrix â this Word Document provides a copy of the final assessment matrix.2018-06-06T04:46:40.091159+00:00https://ckan.publishing.service.gov.uk/dataset/63b0d8e7-1ad0-49a5-8c50-7f96aebf9f60Bird Vocalisation Activity (BiVA) database: annotated soundscapes from the Chernobyl Exclusion Zone2023-02-16T12:43:21.584288+00:00Data comprise audio files captured using a Wildlife Acoustics SM3 Songmeter located on an overgrown unpaved road close to several abandoned houses with deciduous trees (including fruit trees in former gardens) in the abandoned village of Buryakovka in the Chernobyl Exclusion Zone, Ukraine. A single continuous recording of twelve hours of audio from midday until midnight on the 25th June 2015 was manually annotated by an expert (using Raven Pro interactive sound analysis software). The dataset comprises the resultant five wave files (stereo .wav sampled at 48 kHz) and five annotation files (text files with the same name as the associated wave file). Full details about this dataset can be found at https://doi.org/10.5285/be5639e9-75e9-4aa3-afdd-65ba803525912018-09-26T12:16:50.077203+00:00https://ckan.publishing.service.gov.uk/dataset/6cab5c85-89bc-457c-a4bd-a68bf4d70fa22005 Strategic Environmental Assessment SEA6 Technical Report - Sea Mammal Research - Background Information on Marine Mammals (Irish Sea)2024-03-15T14:35:19.176219+00:00This report is a contribution to the Strategic Environmental Assessment (SEA6) conducted by the Department of Trade and Industry (now Department of Energy and Climate Change). Seven marine mammal species are known to occur regularly in the SEA6 area. A relatively small but fairly discrete population of grey seals utilises all but the northwest Irish Sea. Harbour seals are found primarily in the far north of the area. Harbour porpoises are seen year round throughout the area and bottlenose dolphins are present year round off Wales. Minke whales, Risso's dolphins and short-beaked common dolphins are regularly seen in summer mainly in the far south. The report discusses the distribution and abundance of these mammals and their ecological importance.
Marine mammals make use of sound for a variety of purposes: finding prey, detecting predators, communication and probably navigation. The offshore oil and gas industry generates underwater noise at every stage of the process: during exploration seismic surveys, drilling, production and decommissioning. The effects of these different sources of underwater noise on marine mammals are discussed. The use of explosives for underwater cutting and demolition during the decommissioning of platforms and installations may pose a serious threat to some marine mammals.
The effects of pollution on seals and cetaceans are discussed, including the effects of oil spills. The prevalence of disease among the marine mammal populations is reviewed.2024-03-15T14:35:19.176215+00:00https://ckan.publishing.service.gov.uk/dataset/6e204d98-f29e-46dd-8405-d93e16c245f12005 Strategic Environmental Assessment SEA6 Technical Report - Underwater Ambient Noise (Irish Sea)2024-03-15T14:35:22.397605+00:00This report is a contribution to the Strategic Environmental Assessment (SEA6) conducted by the Department of Trade and Industry (now Department of Energy and Climate Change). This report reviews the many different sources of underwater noise, both natural and anthropogenic, that combine to provide the background noise levels in which marine organisms need to survive throughout the SEA6 region. The sources of sound combine together in a complex manner resulting in significant spatial and temporal variations in the noise field. A map of the dominant noise sources in the Irish Sea is shown, indicating that man-made noise is the dominant source of noise over about 70% of the area. Shipping noise is likely to be dominant across large parts of the SEA6 area.
To fully characterise the ambient noise field in the SEA6 area would require multiple measurements at a large number of locations over a period of a year. However, a considerably lower cost approach would be to characterise each sound source and to use this with occurrence statistics for each source to model the ambient noise field across the region. The advantages and disadvantages of the acoustic modelling approach are discussed.2024-03-15T14:35:22.397600+00:00