Dataset Details - Irish Wire Weed (Sargassum muticum) Database
Distributional record information for Sargassum muticum
04/07/2011
12/09/2016
The database was compiled to identify and publicly display the distribution of Sargassum muticum in Ireland
Field observations
The island of Ireland
2001 - 2008.
Records validated by the Irish Seaweed Centre or accepted as valid if in a peer reviewed publication. Many of the latitude and longitude seconds were calculated from 0 to 100. As seconds are to be recorded up to 60 a calculation was made by the Data Centre to correct for this. The Ordnance Survey Ireland grid converter was then used to convert the adjusted latitude/longitude to Irish National Grid. These were plotted on ArcMap and checked against the place names as shown on the OSI Discovery series digitized maps. Due to the adjusting of the Lat/long provided the records are displayed at a 100 meter square resolution. The lat/long provided and the adjusted lat/long are displayed as attributes in the record information where applicable. Grid references were assigned by the Data Centre to Michael Guiry's records based on place name provided, these are entered at the 1km square resolution.
On-going
http://invasivespecies.biodiversityireland.ie/
Restricted (Data can be viewed on the mapping system but is not available for download)
Collated by the National Biodiversity Data Centre from different sources, Irish Wire Weed (Sargassum muticum) Database, National Biodiversity Data Centre, Ireland, accessed 19 July 2018, <https://maps.biodiversityireland.ie/Dataset/78>
Dataset species distribution

Terrestrial Map - 10km

Distribution of the number of species recorded within each 10km grid square (ITM).
Live Map

Marine Map - 50Km

Distribution of the number of species recorded within each 50km grid square (WGS84).
Live Map
Dataset record distribution

Terrestrial Map - 10km

Distribution of the number of records within each 10km grid square (ITM).
Live Map

Marine Map - 50Km

Distribution of the number of records within each 50km grid square (WGS84).
Live Map
Dataset Contacts
Dr. Stefan Kraan
Irish Seaweed Centre, Martin Ryan Institute, National University of Ireland, Galway, Ireland
+353 (0)91 493920 or 492377
Kraanska@hotmail.com
Records per year
Species per year
Date Statistics
Resolution No. records
Day 70
Month Range 24
Year 8
Month 4
1995
2009
Record Statistics

106

72

1

0

Resolution No. records
100m 94
1km 12
2km 0
10km 0
50km 0
Dataset Attributes
Attribute Description
Determiner name The name of the person(s) who verified the identification - used for verify records of difficult taxa
Grid reference comment An explantory note on the grid reference associated with each record
Lat (N) adjusted Lat (N) adjusted
Lat (N) provided Lat (N) provided
Literature source Citation of the literature used as source of data
Long (W) adjusted Long (W) adjusted
Long (W) provided Long (W) provided
Record comment A comment associated with any individual record
Source Original source of data
Recorded Species
TaxonId PrefnameTaxonId Name Authority Group Rank Records
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