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Daily folders (4) of Simrad (.ek5 format) acoustic data. Excel biological data for herring and sprat in 5 pelagic and 1 demersal haul. Continual AGDS data. Sampling gear: Modified PT154 with 6 mm cod-end BT158 demersal trawl with 10 mm cod-end Two 2.8 m beam trawls Scanmar (Height and spread units) • 2 Day grabs Simrad EK500/RoxAnn Seabird CTD Objectives 1. To carry out detailed acoustic surveys in selected lochs, and the Sound of Sleat using the Simrad EK500 and Seabat 602 to determine the distribution of herring and sprat. Concentrations of pelagic fish will be sampled using the PT154. Species composition and length frequency distributions of the fish caught will be determined. Sub-samples will be measured and weighed to establish length-weight relationships; otoliths will be taken to determine age structure of the fish catch. Herring samples will be taken for DNA analysis. 1 2. To carry out demersal trawls in each of the sealochs to determine the abundance, distribution and variation of fish species and any epibenthic mega-fauna using the BT158 trawls and the 2.8 m beam trawl where appropriate. At each trawl station the length-frequency of all species will be taken and sub-samples of the major commercial species will be weighed and otoliths taken. Stomach contents will be removed from selected species for trophic studies, the carcasses will be bagged and frozen for parasitic analysis. In addition samples will be taken for DNA analysis from selected species at each location. 3. If time permits conduct a RoxAnn survey of the Sound of Sleat. Ground-truthing RoxAnn will be carried out using the day grab. 4. The CTD will be used at selected stations to monitor variations in temperature and salinity within and between the sealochs. Main survey areas - Loch Alsh, Loch Duich, Loch Hourn, Loch Kishorn, Loch Nevis. Secondary survey areas - Sound of Sleat and around the Small Isles.
Scottish Government (Marine Scotland)
no limitations to public access
Other details | ||
Internal code | Internally assigned metadata identifier | 6190 |
Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | 0202C-West coast lochs-small pelagics acoustic survey- Clupea cruise 0202 |
Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | herring, sprat, west coast lochs, acoustic survey, small pelagics, Clupea 0202C |
File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | Marine_Scotland_FishDAC_1740 |
Resource Identifier | This is the code assigned by the data owner. | Marine_Scotland_FishDAC_1740 |
Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2002-01-25 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2002-02-07 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 55000.00 |
Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/uom/gmxUom.xml#m |
Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | Not Planned |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | Daily folders (4) of Simrad (.ek5 format) acoustic data. Excel biological data for herring and sprat in 5 pelagic and 1 demersal haul. Continual AGDS data. Sampling gear: Modified PT154 with 6 mm cod-end BT158 demersal trawl with 10 mm cod-end Two 2.8 m beam trawls Scanmar (Height and spread units) • 2 Day grabs Simrad EK500/RoxAnn Seabird CTD Objectives 1. To carry out detailed acoustic surveys in selected lochs, and the Sound of Sleat using the Simrad EK500 and Seabat 602 to determine the distribution of herring and sprat. Concentrations of pelagic fish will be sampled using the PT154. Species composition and length frequency distributions of the fish caught will be determined. Sub-samples will be measured and weighed to establish length-weight relationships; otoliths will be taken to determine age structure of the fish catch. Herring samples will be taken for DNA analysis. 1 2. To carry out demersal trawls in each of the sealochs to determine the abundance, distribution and variation of fish species and any epibenthic mega-fauna using the BT158 trawls and the 2.8 m beam trawl where appropriate. At each trawl station the length-frequency of all species will be taken and sub-samples of the major commercial species will be weighed and otoliths taken. Stomach contents will be removed from selected species for trophic studies, the carcasses will be bagged and frozen for parasitic analysis. In addition samples will be taken for DNA analysis from selected species at each location. 3. If time permits conduct a RoxAnn survey of the Sound of Sleat. Ground-truthing RoxAnn will be carried out using the day grab. 4. The CTD will be used at selected stations to monitor variations in temperature and salinity within and between the sealochs. Main survey areas - Loch Alsh, Loch Duich, Loch Hourn, Loch Kishorn, Loch Nevis. Secondary survey areas - Sound of Sleat and around the Small Isles. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Clupea sailed from Fraserburgh on 25 January, arriving in Kyle on 26 January where the scientific staff joined the ship. Clupea sailed to Loch Nevis and moored overnight in lnverie Bay where the acoustics system was calibrated prior to the start of the survey. Acoustic transecting and pelagic trawling began the next day in Loch Nevis; one tow was carried out. A bad weather forecast meant that the ship moved round to Mallaig harbour to berth there. Severe weather on 28 January precluded leaving the harbour to work. On 29 January Clupea steamed to Loch Hourn for first light and carried out acoustic transecting and pelagic trawling there; two tows were carried out. On the morning of 30 January Clupea steamed round to Loch Duich for first light. The loch was surveyed acoustically and two tows were performed, one unsuccessfully. C/upea moved into Loch Alsh and began acoustic transecting until dusk. This transecting continued on the morning of 31 January until 1130 hours whereupon the acoustic and pelagic trawl gear was dismantled and the ship returned to Kyle of Loch Alsh for the gear and staff changeover. Part 2 On completion of the gear and staff changeover Clupea then sailed to Mallaig to commence part 2 of the cruise. However a severe and prolonged low-pressure system prevented any scientific work from being accomplished until the poor weather abated. On 3 February C/upea sailed at 0730 hours to Loch Nevis and surveyed two locations en route carrying out objectives 2 and 4. On completion of the objectives Clupea proceeded into Loch Nevis where a series of grab samples were taken as part of the survey work in that area for the next day. En route back to Mallaig a demersal trawl was carried out in the Sound of Sleat to give an indication of occurrence of species outside the sea lochs being surveyed. Clupea berthed in Mallaig at 2000 hours where the day's catches were worked up in accordance with AQCESS protocol and standing instructions. On 4 February Clupea worked in Loch Hourn completing the tasks to be done in the loch by 1300 hours. Clupea then proceeded to Loch Duich and commenced an appraisal of the location of creel fleets in relation to the potential demersal trawl tracks. In conclusion it was agreed that it would be unsafe to attempt to use the demersal trawl given the constraints of space available for working. The beam trawl was deployed and resulting catch worked up. Two sets of five grabs were taken and two CTDs recorded in Loch Duich. C/upea departed from Loch Duich and berthed at Kyle of Loch Alsh in order to start work in Loch Kishorn at the earliest opportunity. On the morning of 5 February Clupea commenced work at 0715 hours near to the outer end of Loch Kishorn and continued to work throughout the loch in accordance with objectives 2 and 4. On completion of the objectives for Loch Kishorn C/upea steamed to Kyle of Loch Alsh and docked at 1415 hours in order to disembark scientific staff and allow sufficient time for Clupea to return to Fraserburgh. Results Part 1 One pelagic tow was carried out in Loch Nevis, two in Loch Hourn and two in Loch Duich. The second tow in Loch Duich was a short tow due to lack of space resulting from fixed creels in the loch. The netsonde unit did not work properly and there were problems in hauling the net. One day was Jost due to bad weather and this had a knock-on effect for the amount of work that could be carried out on what was a very short survey time anyway. CTDs were performed, one per tow, in each loch. Part 2 Two and a half days were Jost to bad weather at the start of Part 2, leaving only three full days for work to be performed. It should be noted that all personnel involved in the cruise worked extremely hard in order to try and catch up with the down-time attributed to bad weather. Two demersal tows were carried out in Lochs Hourn, Kishorn and Nevis; one was performed in the Sound of Sleat. None could be undertaken in Loch Duich due to fixed-gear restrictions. Two beam trawls were carried out in Lochs Hourn, Kishorn and Nevis; one was carried out in Loch Duich. Ten grabs were collected in each of the four lochs surveyed. Eight CTDs were performed. in each of Lochs Nevis. Hourn and Kishorn, and in the Sound of Sleat. |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Acoustics | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Biota composition | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Water column temperature and salinity | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Acoustic backscatter in the water column | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish abundance in water bodies | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish biomass in water bodies | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish morphology, age and physiology | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 57.5 |
East | The eastern-most limit of the data resource in decimal degrees | -5 |
South | The southern-most limit of the data resource in decimal degrees | 57 |
West | The western-most limit of the data resource in decimal degrees | -6 |
Regional sea | 43E4 | |
Responsible organisations | ||
Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Resource locators | ||
Locator URL | Web address (URL) that links to the resource | https://www.bodc.ac.uk/data/information_and_inventories/cruise_inventory/search/ |
Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | Reference info #0 |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | ISO restriction code chosen from ISO 19115-1 Codelist | otherRestrictions |
20 Limitations on Public Access – Other constraints | Any restriction on the use of the resource such as the need to agree to certain licence conditions. | no limitations to public access |
21 Conditions for Access and Use - Use limitation | Any restrictions imposed on accessing the resource such as the need to agree to certain licence conditions. | Open Government License (http://www.nationalarchives.gov.uk/doc/open-government-licence/) |
Version info | ||
Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2016-05-05 |
Metadata date | The date when the content of this metadata record was last updated. | 2016-05-19 |
Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Metadata |
Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | Version 2.3.7 |
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