Species point records from 1978 UCNW Glaslyn/Dwyryd estuary littoral sediment survey
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.
dataset
name: 1978-UCNW-Glaslyn-Dwyryd-estuary-littoral-sediment-survey.csv
5e41bf62-f51e-4e5e-b2af-e3816f172ea2
eng
Cook, Rees (1978) Survey of macroinvertebrate populations in the Glaslyn/Dwyryd estuary.
oceans
Marine
Marine Recorder
JNCCMNCR10000633
MNCR
Species
-4.174349091
-3.993369947
52.94650926
52.89568172
1978-07-01
1978-07-01
publication
2001-08-29
This survey was extracted from a Marine Recorder snapshot.
Comma Separated Values
Unknown
Open Government Licence v3.0
no limitations
Digital and Data Solutions, JNCC
custodian
Digital and Data Solutions, JNCC
pointOfContact
2018-05-17