ad9d6383a1092a8b27f1a9b3e1468343
English
dataset
Department of Agriculture, Environment and Rural Affairs
Data contact
Marine.InfoRequests@daera-ni.gov.uk
pointOfContact
2022-07-22
MEDIN Discovery metadata standard
2.3.8
urn:ogc:def:crs:EPSG::4326
DAERA Annual Rocky Shore Macroalgae Survey
2008-06-27
publication
DAERA-RSM
http://www.daera-ni.gov.uk
The rocky shore macroalgae survey is annual assessment of the proportions of rhodophyta (red algae), chlorophyta (green algae), and opportunistic macroalgae communities at fixed sites around the Northern Irish coast. Algal populations can alter in numbers and species composition due to external environmental influence, hence they are a useful indicator of anthropogenic disturbances and pollution. Shores are surveyed for presence of specimens against a prescribed list of species (Reduced Species List).Certain sites are also surveyed for a complete list of species present (Full Species List). Data is recorded as presence (1), or absence (""). Data collected contributes to the classification of Northern Irish water bodies under the Rocky Shore Macroalgae quality element of the EU Water Framework Directive. Within DAERA, this work forms part of the Intertidal Rocky Shore work programme (MM(YY)-12).
Department of Agriculture, Environment and Rural Affairs
Data contact
Marine.InfoRequests@daera-ni.gov.uk
originator
Department of Agriculture, Environment and Rural Affairs
Data contact
Marine.InfoRequests@daera-ni.gov.uk
custodian
annually
Delimited
Marine Environmental Data and Information Network
NDGO0005
Species distribution
GEMET - INSPIRE themes, version 1.0
2008-01-06
revision
Macroalgae generic abundance in water bodies
SeaDataNet P021 parameter discovery vocabulary
2009-11-16
revision
Biodiversity
GEMET
2011-07-06
creation
Marine Environment Monitoring
Global Change Master Directory Science Keywords V5
2006-08-31
creation
Although the Department (of Agriculture, Environment and Rural Affairs - DAERA) has made every effort to prepare the data and believes the information it contains is reliable within the context in which the data was originally generated/collected, errors within the data remain a possibility. Therefore the Department gives no warranty regarding the accuracy or suitability of the data for the data requestors intended use, and accepts no responsibility for any errors or omissions, or for the use of, or results obtained from the use of this data, whether in part or in whole.
otherRestrictions
no restrictions on use.
1000
English
biota
Charting Progress 2 Sea Areas
2009-06-18
creation
Irish Sea
Charting Progress 2 Sea Areas
2009-06-18
creation
Minches & Western Scotland
ICES Rectangles
2009-05-01
creation
39E2
ICES Rectangles
2009-05-01
creation
37E3
ICES Rectangles
2009-05-01
creation
39E3
ICES Rectangles
2009-05-01
creation
37E4
ICES Rectangles
2009-05-01
creation
38E4
ICES Rectangles
2009-05-01
creation
39E4
SeaDataNet vertical extent keywords
2010-01-01
revision
littoral
-7.3833
-5.2739
53.9639
55.3492
2006-01-11
2022-07-22
Department of Agriculture, Environment and Rural Affairs
Data contact
Marine.InfoRequests@daera-ni.gov.uk
distributor
http://www.opendatani.gov.uk/dataset/daera-macroalgae-rocky-shore-surveys
NI Open Data Portal - Macroalgae Rocky Shore Survey Page
A link to the dataset
https://www.opendatani.gov.uk/
NI Open Data Portal
A link to the general host site
dataset
Data is collected by competent staff carrying out field shore surveys of macroalgal communities. Data in this dataset is used to calculate the Rocky Shore Macroalgal Index.
The rocky shore macroalgal index is composed of five metrics:
(i) Species richness (normalised using a shore factor)
(ii) Proportion of Chlorophyta (green) species
(iii) Proportion of Rhodophyta (red) species
(iv) Proportion of opportunists (fast-growing nuisance algae)
(v) Ratio of ecological status groups (ESG).
Individual metrics are weighted equally and combined within a multi-metric index to assess the structure and composition of intertidal rocky shore macroalgae communities. The species richness component is normalised against a shore factor to enable different shore types to be directly comparable regardless of localised natural environmental factors such as diversity of sub-habitats.
Data quality is ensured by particpation in annual NMBAQC ring tests. All staff involved in taxonomic identification of specimens must achieve the required standard of the scheme.