Distribution of Horse Mackerel larvae from CPR samples for period 7 (years 1999 to 2005) - Point data

Fish larvae were collected by the continuous plankton recorder (CPR, operated by SAHFOS) all year long between 1951 and 2005 along transects in the Celtic Sea and English Channel. The CPR is towed by ships of opportunity at speeds of 15 to 20 knots, at an approximate depth of 10 m. Water enters the recorder through an aperture of 1.27 cm2, and is filtered through a continuously moving band of silk with an average mesh size of 270 μm.
 
Citation proposal
(2012) . Distribution of Horse Mackerel larvae from CPR samples for period 7 (years 1999 to 2005) - Point data. https://services.mspdata.eu:/geonetwork/srv/api/records/61447ada-2a89-41a4-982e-d1302928331b

Simple

Date ( Publication )
2012-07-24T00:00:00
Identifier
Distribution of Horse Mackerel larvae from CPR samples for period 7 (years 1999 to 2005) - Point data
Credit
CEFAS
Credit
CHARM consortium
Status
Completed

  Resource provider

Maintenance and update frequency
Unknown
Keywords ( Discipline )
  • Species data set , CHARM , Ichthyoplankton , Trachurus trachurus
Use limitation
research-only
Access constraints
License
Other constraints
Has to be cited this way in maps : "Source CHARM Consortium"
Other constraints
Has to be cited this way in bibliography : "Carpentier A, Martin CS, Vaz S (Eds.), 2009. Channel Habitat Atlas for marine Resource Management, final report / Atlas des habitats des ressources marines de la Manche orientale, rapport final (CHARM phase II). INTERREG 3a Programme, IFREMER, Boulogne-sur-mer, France. 626 pp. & CD-rom"
Spatial representation type
Vector
Denominator
2500
Metadata language
French
Metadata language
English
Character set
UTF8
Topic category
  • Oceans
  • Biota
  • Environment
Environment description
Microsoft Windows XP ; ESRI ArcGIS 9.x
Geographic identifier
Eastern English Channel
N
S
E
W


Reference system identifier
EPSG / WGS 84 (EPSG:4326) / 7.9

Distributor

  Distributor

Name
Version
Protocol
FILE
Name
t1
Description
trimestre 1
Protocol
FILE
Name
t2
Description
trimestre 2
Protocol
FILE
Name
t3
Description
trimestre 3
Protocol
FILE
Name
t4
Description
trimestre 4
OnLine resource
CHARMIII_CEFAS_Icthyoplankton_y7t1HOM  

trimestre 1

OnLine resource
CHARMIII_CEFAS_Icthyoplankton_y7t2HOM  

trimestre 2

OnLine resource
CHARMIII_CEFAS_Icthyoplankton_y7t3HOM  

trimestre 3

OnLine resource
CHARMIII_CEFAS_Icthyoplankton_y7t4HOM  

trimestre 4

Hierarchy level
Dataset
Statement

In all, over 50 taxonomic groups of ichthyoplankton were identified, but we focused on the 6 most abundant groups of fish larvae, clupeids (Clupeidae), Atlantic mackerel (Scomber scombrus), rocklings, horse mackerel (Trachurus trachurus), whiting (Merlangius merlangus), and gadoids (Gadidae). These were the only taxonomic groups for which we had enough positive samplings points in order to produces maps of distribution.

The data are aggregated by 7 years periods (1: 1957 to 1963, 2: 1964 to 1970, 3: 1971 to 1977, 4: 1978 to 1984, 5: 1985 to 1991, 6: 1992 to 1998 and 7: 1999 to 2005) and by trimesters. The number of points by year/trimester periods is calculated. For each year/trimester period, the number of non-zero observation for each species/species group is also calculated. If this number is less than 10, the species/group species and period is plotted as a bubble plot. If it is more than 10, the sampling will be interpolated by kriging to have a presence map in the whole area

Description

Metadata

File identifier
61447ada-2a89-41a4-982e-d1302928331b   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2020-06-04T00:26:40
Metadata standard name
ISO 19115:2003/19139 - SEXTANT
Metadata standard version
1.0

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