Overview

Distribution

Escharella ventricosa is distributed from the western Mediterranean to Shetland, Faroe and western Norway. In the British Isles, the species is widespread and abundant.

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© Sally Rouse

Source: Bryozoa of the British Isles

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Physical Description

Morphology

Escharella ventricosa is an encrusting bryozoan. Colonies form greyish-white, often silvery and glistening broad sheets which are composed of a single layer of autozooids. Autozooids are oval to hexagonal and strongly convex. They range in size from 0.55-0.7 mm by 0.45-0.55 mm, with four stout spines present.

Creative Commons Attribution 3.0 (CC BY 3.0)

© Sally Rouse

Source: Bryozoa of the British Isles

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Ecology

Habitat

The species is able to colonise stones, shells, calcified bryozoans and occasionally kelp holdfasts in subtidal offshore waters down to 450 m.

Creative Commons Attribution 3.0 (CC BY 3.0)

© Sally Rouse

Source: Bryozoa of the British Isles

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Depth range based on 1 specimen in 1 taxon.

Environmental ranges
  Depth range (m): 91 - 91
 
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Depth range based on 29 specimens in 1 taxon.
Water temperature and chemistry ranges based on 11 samples.

Environmental ranges
  Depth range (m): 0 - 201
  Temperature range (°C): 4.685 - 10.558
  Nitrate (umol/L): 2.872 - 17.420
  Salinity (PPS): 32.125 - 34.868
  Oxygen (ml/l): 4.493 - 6.775
  Phosphate (umol/l): 0.382 - 1.283
  Silicate (umol/l): 2.052 - 13.543

Graphical representation

Depth range (m): 0 - 201

Temperature range (°C): 4.685 - 10.558

Nitrate (umol/L): 2.872 - 17.420

Salinity (PPS): 32.125 - 34.868

Oxygen (ml/l): 4.493 - 6.775

Phosphate (umol/l): 0.382 - 1.283

Silicate (umol/l): 2.052 - 13.543
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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