Identification

Title

2015 SeagrassWatch Porthdinllean intertidal seagrass meadow survey

Abstract

The aim of this survey was to monitor the status of the seagrass meadow to determine the ecological value of seagrass (Zostera marina) meadows at Porth Dinllaen for stakeholder management and tourism development. A seed count was also made. Project code: D30_seine

Resource type

dataset

Resource locator

Unique resource identifier

code

DASSHDT00000113

codeSpace

http://www.dassh.ac.uk

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

urn:ogc:def:crs:EPSG::4326

Additional information source

http://www.seagrasswatch.org/manuals.html

Classification of spatial data and services

Topic category

biota

Keywords

Keyword set

keyword value

Keyword set

keyword value

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2008-01-06

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2009-11-16

Geographic location

West bounding longitude

-4.5677

East bounding longitude

-4.5628

North bounding latitude

52.9446

South bounding latitude

52.9415

Extent

Extent group

authority code

title

reference date

date type

creation

effective date

2009-06-18

code identifying the extent

Irish Sea

Extent group

authority code

title

reference date

date type

creation

effective date

1954-01-01

code identifying the extent

Irish Sea and St. George's Channel

Extent group

authority code

title

reference date

date type

revision

effective date

2010-01-01

code identifying the extent

infralittoral

Extent group

authority code

title

reference date

date type

creation

effective date

2014-05-16

code identifying the extent

VIIa

Temporal reference

Temporal extent

Begin position

2015-04-01

End position

2015-04-30

Dataset reference date

date type

publication

effective date

2015-05-07

Frequency of update

continual

Quality and validity

Lineage

3 transects 50 m permanently marked in the water by plastic tags in the sand with 25 m distance between them. Quadrats laid every 5 m always on the right-hand-side of the transect line and photograph taken. Seagrass and algal percentage cover estimated from photographs as was epiphyte percentage. Canopy height measured with a ruler in the field. Start and end co-ordinates of each transect were determined with a non-differential GPS, however the co-ordinates for individual quadrats (excluding those at the start and end) were determined with ArcGIS.

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

DASSH terms and conditions apply

Constraint set

Limitations on public access

DASSH terms and conditions apply

Responsible organisations

Responsible party

contact position

Research Fellow

organisation name

Cardiff University School of Biosciences

email address

Cullen-UnsworthLC@cardiff.ac.uk

responsible party role

originator

Responsible party

contact position

Data Manager

organisation name

Data Archive for Seabed Species and Habitats (DASSH)

full postal address

Marine Biological Association of the UK, The Laboratory, Citadel Hill

Plymouth

PL1 2PB

telephone number

01752 633102

facsimile number

01752 633291

email address

dassh.enquiries@mba.ac.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

organisation name

DASSH, The Archive for Marine Species and Habitat Data

email address

matarn@mba.ac.uk

responsible party role

pointOfContact

Metadata date

2016-11-15

Metadata language