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Metadata: 1903C -West coast lochs, small pelagics acoustic survey- Clupea cruise 1903
Abstract:
Daily folders (8) of Simrad format (.raw) acoustic data. Excel biological data for 16 pelagic hauls. CTD data for 21 vertical dips. Minilogger data for 16 deployments. surface light level data from 8 files. Objectives 1. To carry out detailed acoustic surveys in selected lochs, the Sound of Sleat and North Minch (if time allows) 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. Herring samples will be analysed for sex, maturity and lchthyophonus infection. Stomach, gonad and DNA samples will also be taken. 2. A line of CTDs will be done through each loch. Survey Areas Main survey areas - Loch Kishorn, Loch Alsh, Loch Duich, Loch Hourn, Loch Nevis. Secondary survey areas - Sound of Sleat, North Minch.
Data holder:
Scottish Government (Marine Scotland)
Use constraints:
no limitations to public access
Other details | ||
Internal code | Internally assigned metadata identifier | 6233 |
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. | 1903C -West coast lochs, small pelagics acoustic survey- Clupea cruise 1903 |
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 1903 |
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_1750 |
Resource Identifier | This is the code assigned by the data owner. | Marine_Scotland_FishDAC_1750 |
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 | 2003-11-17 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2003-12-01 |
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 (.raw) acoustic data. Excel biological data for 16 pelagic hauls. CTD data for 21 vertical dips. Minilogger data for 16 deployments. surface light level data from 8 files. Objectives 1. To carry out detailed acoustic surveys in selected lochs, the Sound of Sleat and North Minch (if time allows) 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. Herring samples will be analysed for sex, maturity and lchthyophonus infection. Stomach, gonad and DNA samples will also be taken. 2. A line of CTDs will be done through each loch. Survey Areas Main survey areas - Loch Kishorn, Loch Alsh, Loch Duich, Loch Hourn, Loch Nevis. Secondary survey areas - Sound of Sleat, North Minch. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Clupea sailed from Fraserburgh on 17 November 2003, and was delayed en route due to weather for some 36 hours. After 24 hours in Loch Eriboll she sailed to Kyle and arrived on 19 November where staff joined the ship at 1700. Clupea steamed to anchor in Loch na Beiste where the acoustic system was calibrated prior to the start of the survey. Acoustic transecting and pelagic trawling began the next day in Loch Hourn and continued there for two days. Transecting was carried out on the flood tide on both days in Loch Hourn. It became apparent that the CTD Seabird 911 plus was not communicating with the software so Clupea returned to Kyle on the evening of '21 November to pick up the Seabird 19 CTD that had been• brought over to Kyle by a lab driver. Loch Kishorn was surveyed on 22 November and Loch Duich on 23 and 24 November. In each of these lochs it was possible to transect on both ebb and flood tides. In Loch Kishorn only one of each tides were covered whereas in Loch Duich transecting was able to be performed during two ebb and two flood tides. Clupea returned to Loch Hourn and worked there during 25 November, transecting and fishing this time during an ebb tide. Loch Nevis was surveyed during 26 and 27 November during the ebb tide. Loch Hourn' was surveyed again on 28 November, again during the ebb tide, giving surveys across two ebb tides and two flood tides for both Loch Duich and Loch Hourn. The work that had been planned in the North Minch, comprising a couple of acoustic transects, from Skye across to Lewis and then to Cape Wrath, and some target fishing was unable to be carried out at the end of the survey due to bad weather. Staff therefore disembarked at Kyle at 0900 on 29 November and returned to Aberdeen by minibus. During each survey period in each loch the tide gauge was deployed prior to the start of transecting and retrieved when work was finished in that loch, prior to moving to the next site. The light gauge recorded data throughout the cruise to determine ambient light levels and worked for more than half of the trip. The mini-logger was deployed on the headline during each trawl, along with the Scanmar sensors. In each loch a CTD was carried out at the centre point of each tow (unless several tows covered the same area in which case one CTD was used to provide data for the different tows). A number of CTD dips were then carried out through the rest of each loch to determine vertical structure throughout. In Loch Duich five pelagic tows and six CTD deployments were carried out; in Loch Hourn six pelagic tows and four CTD deployments were carried out; in Loch Kishorn one pelagic tow and four CTD deployments were carried out; in Loch Nevis three pelagic tows and five CTD deployments were carried out. The time and position data for these tows and CTDs are in Tables 1 and 2 respectively. Samples for the herring genetics component of the ROAME (in conjunction with the University of Hull) were taken in Lochs Duich and Nevis. Samples for the WESTHER project were taken in Loch Hourn. |
Related keywords | ||
Keyword | 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 | |
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 | |
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. | 2016-05-06 |
Harvest date | The date which this record has been (re)harvested from the provider. | 2024-04-21 |
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 |