[Limnodrilus hoffmeisteri], [Tubifex tubifex] and [Gammarus] spp. in low salinity infralittoral muddy sediment
Upper estuary muddy sediments with very low fluctuating salinity, characterised by the oligochaetes [Limnodrilus hoffmeisteri] and [Tubifex tubifex]. Other taxa may include [Marenzelleria wireni], [Gammarus zaddachi], [Paranais litoralis] and [Heterochaeta costata]. The biotope contains elements of both freshwater and brackish communities.
Situation: This biotope is found in the transitional zone between the freshwater and brackish environments where tidal currents are sufficiently reduced to allow the deposition of fine silt and the establishment of an infaunal community. It may be found adjacent to NeoGam away from the stronger tidal streams.
Temporal variation: The position of this biotope in the estuary may vary seasonally depending on freshwater input (Gameson, 1982).
Important species scientific name | Corresponding species comments |
---|---|
Limnodrilus hoffmeisteri Claparède, 1862 | Species mentioned in habitat definition as characterising |
Tubifex tubifex (Müller, 1774) | Species mentioned in habitat definition as characterising |