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[Pectenogammarus planicrurus] in mid shore well-sorted gravel or coarse sand

Description of [Pectenogammarus planicrurus] in mid shore well-sorted gravel or coarse sand

Identity:

flag A2.112
creatorIdentity remo
creationTime 2017-08-16T16:38:13.030
lastMaintainerIdentity remo
modificationTime 2016-03-16T18:42:49
id 2764
imageSize 0 Bytes

Shores of well-sorted gravel with a predominant particle size of 4.0 mm but ranging between 3 and 6 mm support dense populations of the amphipod Pectenogammarus planicrurus. Material finer than 2 mm reduces the ability of the amphipod to survive. The amphipod is tolerant of variable salinity, although a preference for a specific salinity regime has not been determined. As this habitat is regularly under-surveyed, its distribution is unclear. Situation: The biotope is often associated with the lee side (wind or tide) of obstacles such as rock outcrops and groynes; this may be due to the deposition of algal debris, shelter from wave action or degree of sorting due to localised tidal flow around the obstacle (most likely a combination of the first and last influence).