Name of the station

Rivière de Morlaix

Department

29 - Finistère

Laboratory

Station Biologique Roscoff

Contact

Céline HOUBIN (houbin@sb-roscoff.fr)

WFD water mass

FRGT06 - Rivière de Morlaix

Latitude

Longitude

48.6545 (WGS84)

-3.8678 (WGS84)

Start of the survey

1977-08-01

Periodicity of the survey

Two times per year

Surveyed parameters

Benthic invertebrate macrofauna abundances (> 1 mm)

δ¹³C and δ¹⁵N of macrofauna
Temperature
Salinity
Granulometry
Organic matter

Neighbourhood of other NOS

Somlit, Phytobs, Coast-HF, Sonel

Direct access to data

https://data.benthobs.fr/files/latest/5373/

Comments

This long-term survey was initiated following the pollution of the bay by oil from the Amoco Cadiz in March 1978.

The point is located at the entrance of the Morlaix River near the locality of Kerarmel by 8 meters of depth compared to the zero of the maps on muddy fine sand Abra alba–Melinna palmata community.

Sampling is done using the Smith McIntyre grab (10 unit samples of 0.1 m² at each survey for a total area of 1 m²). Sieving is carried out on a 1 mm circular mesh. Samples are fixed to 10 % neutral formalin.

Sampling frequencies have changed over time: 12/year from 1977 to 1985, 5/year from 1986 to 2007, 2/year since 2008.

Related bibliography

Dauvin J.-C. (1984) Dynamique d'écosystèmes macrobenthiques des fonds sédimentaires de la baie de Morlaix et leur perturbation par les hydrocarbures de l'Amoco Cadiz. Thèse de doctorat d’État, Université de Paris VI, 456 p. + annexes 192 p.

Dauvin, J.-C. (2000). The muddy fine sand Abra alba–Melinna palmata community of the Bay of Morlaix twenty years after the Amoco Cadiz oil spill. Marine Pollution Bulletin, 40 (6), 528-536.