© OpenStreetMap contributors
Marine Scotland, Marine Laboratory in Aberdeen have previously participated in the International Heering larvae survey and still holds paper records, and related sample results. However, the main data collection is now maitaining by the Leibniz Insititue of Marine Science. The survey is now maintains and conducted by Germany and Netherlands. This record relates specifically to the remaining records held by Marine Scotland Science. The international Herring Larvae Surveys (IHLS) are carried out between September and end of January in the north-western, central, and southern North Sea and Eastern English Channel, following the spawning areas of North Sea herring (cf. Figure 1 at Survey Design). The surveys aim to provide quantitative estimates of North Sea herring larval abundance, thus targeting the very young stages of freshly hatched herring in the vicinity of the spawning areas.
Marine Scotland
Other details | ||
Internal code | Internally assigned metadata identifier | 6300 |
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. | International Herring Larvae Survey |
Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | ICES herring larvae Survey, IHLS |
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_946 |
Resource Identifier | This is the code assigned by the data owner. | Marine_Scotland_FishDAC_946 |
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 | 1967-01-01 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2016-11-07 |
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'. | unknown |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | Marine Scotland, Marine Laboratory in Aberdeen have previously participated in the International Heering larvae survey and still holds paper records, and related sample results. However, the main data collection is now maitaining by the Leibniz Insititue of Marine Science. The survey is now maintains and conducted by Germany and Netherlands. This record relates specifically to the remaining records held by Marine Scotland Science. The international Herring Larvae Surveys (IHLS) are carried out between September and end of January in the north-western, central, and southern North Sea and Eastern English Channel, following the spawning areas of North Sea herring (cf. Figure 1 at Survey Design). The surveys aim to provide quantitative estimates of North Sea herring larval abundance, thus targeting the very young stages of freshly hatched herring in the vicinity of the spawning areas. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | In 1972 the IHLS was newly defined and further standardised. At the beginning of the survey series a great number of countries participated regularly, namely Denmark, Germany, England, Ireland, The Netherlands, Norway, Scotland, and Sweden. In the 1980s, the international participation declined, and since the early 1990s only The Netherlands and Germany have carried out the survey. For this reason the survey effort has been reduced by 4/5th of its original size, now concentrating on the Shetland/Orkeny, Buchan/Central North Sea and Southern North Sea/Eastern English Channel areas only. The survey is coordinated by the ICES Planning Group on Herring Surveys (PGHERS). Catch data together with specific information like haul position, survey area etc. are reported to the ICES International Herring Larvae Database annually. This database is held at the Leibniz Institute of Marine Sciences in Kiel, Germany. The herring larval data has been updated annually since 1972. The database contains the following information: General heading information listing the area surveyed, the survey vessel, the flow meter calibration in revolutions per meter, the type of gear and the survey dates. Location and sampling details, e.g. the date and position of the haul, the time (UTC) of the haul, the sampler and bottom depths, the hauls duration and the total number of larvae taken in the haul. The length distributions (from 5 to =24 mm) of the measured larvae. Larvae abundance estimates for the relevant length classes at each station (n/m²). Abundance of herring larvae is surveyed in specific time periods and in four different areas, following the autumn and winter spawning activity of North Sea herring from North to South (cf. Figure 1). Spawning in the Southern North Sea occurs later than in the Northern spawning grounds: The autumn spawners spawn in the North and the winter spawners in the South. The survey area is subdivided into four areas: Orkney/Shetland, Buchan, Central North Sea, Southern North Sea/Eastern English Channel. The Netherlands carries out herring larvae surveys in three areas (Figure 1).Table 1 presents the survey location, its regional code, the spawning period of the targeted sub stock, the survey period, and the nation that carries out the survey. |
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 | Fish taxonomy-related counts | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 61 |
East | The eastern-most limit of the data resource in decimal degrees | 6 |
South | The southern-most limit of the data resource in decimal degrees | 50 |
West | The western-most limit of the data resource in decimal degrees | -5 |
Regional sea | 46E5 | |
47E5 | ||
48E5 | ||
49E5 | ||
41E6 | ||
44E6 | ||
45E6 | ||
46E6 | ||
47E6 | ||
48E6 | ||
49E6 | ||
40E7 | ||
41E7 | ||
42E7 | ||
43E7 | ||
44E7 | ||
45E7 | ||
46E7 | ||
47E7 | ||
48E7 | ||
49E7 | ||
50E7 | ||
38E8 | ||
39E8 | ||
40E8 | ||
41E8 | ||
42E8 | ||
43E8 | ||
44E8 | ||
45E8 | ||
46E8 | ||
47E8 | ||
48E8 | ||
49E8 | ||
50E8 | ||
29E9 | ||
37E9 | ||
38E9 | ||
39E9 | ||
40E9 | ||
41E9 | ||
42E9 | ||
43E9 | ||
44E9 | ||
29F0 | ||
30F0 | ||
35F0 | ||
36F0 | ||
37F0 | ||
38F0 | ||
39F0 | ||
40F0 | ||
41F0 | ||
42F0 | ||
43F0 | ||
44F0 | ||
29F1 | ||
30F1 | ||
31F1 | ||
32F1 | ||
35F1 | ||
36F1 | ||
37F1 | ||
38F1 | ||
39F1 | ||
40F1 | ||
31F2 | ||
32F2 | ||
33F2 | ||
35F2 | ||
36F2 | ||
37F2 | ||
31F3 | ||
32F3 | ||
33F3 | ||
31F4 | ||
32F4 | ||
33F4 | ||
33F5 | ||
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 | Marine Scotland | |
Phone | +44 (0)1224 876 544 | |
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 | Marine Scotland | |
Phone | +44 (0)1224 876 544 | |
Delivery point | Marine Scotland Science, Marine Laboratory, 375 Vcitoria Road | |
Postal code | AB11 9DB | |
City | Aberdeen | |
Country | United Kingdom | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Marine Scotland | |
Phone | +44 (0)1224 876 544 | |
Delivery point | Marine Scotland Science, Marine Laboratory, 375 Vcitoria Road | |
Postal code | AB11 9DB | |
City | Aberdeen | |
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 | Marine Scotland | |
Individual name | Rasmussen, Jens | |
Phone | +44 (0)1224 876 544 | |
Delivery point | Marine Scotland Science, Marine Laboratory, 375 Vcitoria Road | |
Postal code | AB11 9DB | |
City | Aberdeen | |
Country | United Kingdom | |
Resource locators | ||
Locator URL | Web address (URL) that links to the resource | http://www.surveyswageningenimares.wur.nl/UK/Survey+list/International+Herring+Larvae+Surveys+%28IHLS%29/ |
Locator name | Name of the web resource | Reference info #0 |
Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | download |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | ISO restriction code chosen from ISO 19115-1 Codelist | license |
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. | 1900-01-01 |
Metadata date | The date when the content of this metadata record was last updated. | 2014-08-21 |
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 |
© OpenStreetMap contributors