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Metadata: 1500C West coast lochs - small pelagics acoustic survey - Clupea cruise 1500C
Abstract:
Daily folders (8) of Simrad format (.ek5) acoustic data. Continual AGDS data. Objectives 1. To sample fish using the BT 154 International gadoid trawl with 6 mm cod-end. 2. To use the modified 5 m beam trawl to sample bottom living species. 3. To carry out detailed acoustic surveys in selected sealochs using the Seabat 602 and RoxAnn. 4. To carry out grab sampling for benthic organisms and ground truthing RoxAnn. Sea Lochs Surveyed Loch Gairloch, Outer/Inner Loch Torridon, Loch Kishorn, Loch Duich, Loch Hourn and Loch Nevis.
Data holder:
Scottish Government (Marine Scotland)
Use constraints:
no limitations to public access
Other details | ||
Internal code | Internally assigned metadata identifier | 6210 |
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. | 1500C West coast lochs - small pelagics acoustic survey - Clupea cruise 1500C |
Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Herring, Sprat, small pelagics, acoustic survey, West coast, sea lochs |
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_1734 |
Resource Identifier | This is the code assigned by the data owner. | Marine_Scotland_FishDAC_1734 |
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 | 2000-10-20 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2000-11-06 |
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 (8) of Simrad format (.ek5) acoustic data. Continual AGDS data. Objectives 1. To sample fish using the BT 154 International gadoid trawl with 6 mm cod-end. 2. To use the modified 5 m beam trawl to sample bottom living species. 3. To carry out detailed acoustic surveys in selected sealochs using the Seabat 602 and RoxAnn. 4. To carry out grab sampling for benthic organisms and ground truthing RoxAnn. Sea Lochs Surveyed Loch Gairloch, Outer/Inner Loch Torridon, Loch Kishorn, Loch Duich, Loch Hourn and Loch Nevis. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Clupea sailed from Fraserburgh at 1100 hours on Monday 23 October. P Copland travelled round with the ship to Gairloch, where the remainder of the scientific staff joined C/upea at 1400 hours on Tuesday 24th. Trials of the modified beam trawl were conducted in Loch Gairloch duringthe afternoon of the 24th. Westerly gales on the 25th and 26th prevented further work in Loch Gairloch. Clupea sailed for Inner loch Torridon on the morning of the 26th. Acoustic surveys were carried out in Inner and Outer lochs Torridon and Shieldaig using Seabat and RoxAnn. Grab samples were taken at selected locations. Beam trawling was carried out with limited success due to the large numbers of creels in each of the lochs. C/upea left Torridon on the 28th and headed for Loch Kishorn. Creels were again a problem and prevented the shooting of the Pelagictrawl. However, the beamtrawl was deployedwhere space allowed. Clupea docked at Kyle onthe evening of the 28th. Severe galesfor the nexttwo days prevented any further work. I Young joined C/upea on the evening of the 29th. Clupea sailed for Loch Duich on the 30th. Although creels were present in the loch there was sufficient space to deploy the Pelagic netsuccessfully for the first time. The trawl and acoustic survey in Loch Duich, was completed by the evening of theā¢30th, before proceeding to Lochs Hourn and Nevis where similar surveys were carried out from 31 October - 3 November before Clupea returned to Kylewhere the scientific staff disembarked on the 4th and Clupea returned to Fraserburgh for unloading on the 6th. Results Areas covered by the RoxAnn and Seabat survey are shown on the charts with trawl and grab positions also indicated. Fourteen beam trawls and 10 trawls with the PT154 were completed. Where possible each haulwas of 30 minutes duration. Haul details are shown in Table1. Total numbers of main species captured are shown in Table 2. All hauls were sampled according to standing instructions. The most common species caught when fishing in midwater layers in Lochs Duich, Hourn and Neviswere Sprat and Euphausids. The Seabat also identified similar marks in Lochs Torridon, Shieldaig and Kishorn, but due to the proximity of creels it was not possible to identify species type by trawling. The Ghost shrimp Pasipheasp. was also present , being found predominantly in the bottom 10 metres. When fished close to the bottom the PT 154 captured mainly small Whiting (9-23 cm), Pout (8-17 cm) and Herring (9-15 cm). One haul (PT8) shot at the entrance to Loch Nevis contained significant numbers of small Haddock (9-23 cm). Samples of Herring and Sprat were retained for DNA analysis. Herring were examined for sex (43% females) and maturity ( all stage 1). Samples were also examined for lcthyophonus - none was found. Stomach contents examined showed that Euphausids were the major food source for the Whiting, Haddock and Pout. All the Herring and Sprat samples examined had empty stomachs. |
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 | otherRestrictions | |
20 Limitations on Public Access - Other constraints | This states any limitations on access to the data and uses free text. | no limitations to public access |
21 Conditions for Access and Use - Use limitation | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | 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. | 2016-04-26 |
Harvest date | The date which this record has been (re)harvested from the provider. | 2024-04-14 |
Metadata date | The date when the content of this metadata record was last updated. | 2016-05-03 |
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 |