Identification

Title

Habitat point records from 1978 UCNW Glaslyn/Dwyryd estuary littoral sediment survey

Abstract

Benthic survey of Glaswyn/Dwyryd Estuary sandflats, adjacent to Morfa Harlech NNR. The estuary is extensive at 8.2 km. Sediments are of marine sand collected by Langshore drift in Coreligan Bay, and accretion in the estuarine area. Two obvious faunal trends ar apparent when the main part of the estuary. A salinity trend restricting Anguilla tenuis and Bathyporeia pelagica to low ground near the mouth and a sand/mobility/shelter/height based trend from the sparse fauna of the sandy low water channels to the organically richer muddy salt marsh fringe. The basin just above Portmadoc town bridge is an especially muddy artificial habitat sheltered by embankments and adjacent to the town sewage works. This mud seems to hold Nereis diversicolor, Prionospio cirifera and oligochaetes.

Resource type

dataset

Resource locator

http://data.jncc.gov.uk/data/1097f599-f782-4696-9060-aa5cd1569932-1978-UCNW-Glaslyn-Dwyryd-estuary-littoral-sediment-survey.csv

name: 1978-UCNW-Glaslyn-Dwyryd-estuary-littoral-sediment-survey.csv

Unique resource identifier

code

1097f599-f782-4696-9060-aa5cd1569932

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Additional information source

Cook, Rees (1978) Survey of macroinvertebrate populations in the Glaslyn/Dwyryd estuary.

Classification of spatial data and services

Topic category

oceans

Keywords

Keyword set

keyword value

Marine

Marine Recorder

JNCCMNCR10000633

Habitat

MNCR

Geographic location

West bounding longitude

-4.174349091

East bounding longitude

-3.993369947

North bounding latitude

52.94650926

South bounding latitude

52.89568172

Temporal reference

Temporal extent

Begin position

1978-07-01

End position

1978-07-01

Dataset reference date

date type

publication

effective date

2001-08-29

Frequency of update

Quality and validity

Lineage

This survey was extracted from a Marine Recorder snapshot.

Conformity

Data format

name of format

Comma Separated Values

version of format

Unknown

Constraints related to access and use

Constraint set

Use constraints

Open Government Licence v3.0

Limitations on public access

no limitations

Responsible organisations

Responsible party

organisation name

Digital and Data Solutions, JNCC

email address

data@jncc.gov.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

organisation name

Digital and Data Solutions, JNCC

email address

data@jncc.gov.uk

responsible party role

pointOfContact

Metadata date

2018-05-17

Metadata language