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Paper records of: EK500 echogram print outs. Haul summary sheets with biological data for each of 9 pelagic, 17 demersal and 8 beam trawls. Excel biological data for 9 pelagic hauls. Sampling Gear and Equipment Modified PT154 with 6 mm codend BT158 demersal trawl with 1O mm codend 2.8 m beam trawl with spare beam Scanmar (Height and spread units) 2 Day grabs Simrad EK500 /RoxAnn CTD Objectives Part 1 1. To carry out detailed acoustic surveys in selected lochs, and the Sound of Sleat, using the EK 500 and RoxAnn 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 weighed and otolithed to establish length-weight relationships and age structure. Herring samples will be analysed for sex, maturity and lchthyophonus infection. Stomachs, DNA samples and photographs will also be taken from selected samples for the EU projects AQCESS, HERGEN and WESTHER. ,. Part 2 2. To carry out demersal trawls in each of the sea lochs 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 otolithed. Stomach contents will be removed from selected species for trophic studies. 3. Five grab samples will be taken before trawling, at each of the demersal trawl stations. A CTD will also be done at both pelagic and demersal trawl positions.
Scottish Government (Marine Scotland)
no limitations to public access
Other details | ||
Internal code | Internally assigned metadata identifier | 6195 |
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. | 0103C-West coast lochs, small pelagics acoustic survey-Clupea cruise 0103 |
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, Clupea, 0103C |
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_1745 |
Resource Identifier | This is the code assigned by the data owner. | Marine_Scotland_FishDAC_1745 |
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 | 2003-01-06 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2003-01-25 |
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. | Paper records of: EK500 echogram print outs. Haul summary sheets with biological data for each of 9 pelagic, 17 demersal and 8 beam trawls. Excel biological data for 9 pelagic hauls. Sampling Gear and Equipment Modified PT154 with 6 mm codend BT158 demersal trawl with 1O mm codend 2.8 m beam trawl with spare beam Scanmar (Height and spread units) 2 Day grabs Simrad EK500 /RoxAnn CTD Objectives Part 1 1. To carry out detailed acoustic surveys in selected lochs, and the Sound of Sleat, using the EK 500 and RoxAnn 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 weighed and otolithed to establish length-weight relationships and age structure. Herring samples will be analysed for sex, maturity and lchthyophonus infection. Stomachs, DNA samples and photographs will also be taken from selected samples for the EU projects AQCESS, HERGEN and WESTHER. ,. Part 2 2. To carry out demersal trawls in each of the sea lochs 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 otolithed. Stomach contents will be removed from selected species for trophic studies. 3. Five grab samples will be taken before trawling, at each of the demersal trawl stations. A CTD will also be done at both pelagic and demersal trawl positions. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Clupea sailed from Fraserburgh on 6 January 2003, arriving in Kyle the following day where the scientific staff joined the ship. Clupea steamed to anchor in Balmacara 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. A problem with the 38 kHz transducer required re-calibration for that transducer. This was carried out on the evening of 8 January 2003. Acoustic transecting and pelagic trawling was resumed the next day and carried out in Lochs Hourn; Duich and Kishorn. CTDs were carried out for each pelagic trawl haul. Work was limited to acoustic transecting in Lochs Alsh and Duich on 14 January 2003 due to increasingly inclement weather. 15 January 2003 was lost to work due to severe weather conditions and C/upea remained alongside at Kyle. Scientific staff changed over on 16 January 2003. • Part 2 The change over of scientific staff and fishing gear took place at Kyle on 16 January. Due to severe weather conditions Clupea did not start work until the following day when she steamed to Loch Kishorn to begin the survey. Weather conditions continued to hamper work and trawling was only possible in the outer loch. Clupea then proceeded to Loch Duich where the designated grabs and one trawl were completed before poor light conditions prevented further work due to the difficulty in seeing creel floats. Clupea returned to Kyle for the night. The following morning C/upea returned to Loch Duich to complete the trawling and to lift a mooring for the sonar team, before steaming to Loch Hourn where grabbing continued until dusk. Demersal trawling, beam trawling and CTDs were completed the next day in Loch Hourn. Clupea then steamed to Loch Nevis where the sequence of mud grabs, trawling and CTDs were repeated. Exploratory trawling was also carried out on suitable ground of Armadale cin the south-east side of Skye, before returning to Loch Nevis and Loch Hourn on 21 January where a series of repeat trawls were carried out in each loch to reinforce the data already collected. An exploratory haul was also carried out on hard ground in Loch Alsh. The next day trawling and grabbing were completed in Loch Kishorn and additional repeat trawls were carried out in Loch Duich. On 23 January exploratory beam trawling was carried out in Loch Alsh, poor weather preventing fishing elsewhere. With all the work completed Clupea finished at Kyle on the afternoon of 23 January where scientific staff disembarked and the ship proceeded to Fraserburgh. Results Part 1 Nine pelagic tows were completed during the trip and sampling undertaken according to protocol. A problem with one of the signal processing boards meant that two acoustic frequencies (38 and 120 kHz) were used during this trip, as opposed to the usual three (38, 120 and 200). However, 38 and 120 kHz are the more commonly examined in analysis and post-processing. CTDs were taken at the centre point of each pelagic tow. Extra sampling was completed in three lochs for the EU projects HERGEN and WESTHER. Part 2 Seventeen demersal and eight beam trawls were completed during the trip and sampling undertaken according to the protocol. Forty grab samples were taken and sieved through 2 mm and 1 mm mesh, the samples being retained for later identification. Mud samples were also taken at each grab station for particle analysis. CTD and water samples were taken routinely at each trawl station. Positions for the pelagic tows (part 1) and demersal tows (part 2) are detailed in the attached table. A detailed species list has also been drawn up for each loch. Analysis of the samples is underway and will be reported at a later date as part of the AQCESS project. |
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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