Overview

Brief Summary

Fossil species

recent & fossil

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Comprehensive Description

Description

 Electra crustulenta forms encrusting mats, large erect clumps or foliage-like cylinders around the stems of plants. Individuals (zooids) of the colony can be elongate, rectangular or oval, separated by narrow grooves and are approximately 0.5 mm long and 0.3 mm wide. The upper surface (frontal surface) of zooids is covered by about three quarters membrane and one quarter calcified shield (gymnocyst). The zooids are white and the operculum (door to the zooid orifice) is opaque white. Electra crustulenta zooids has crenulate margins with a single short spine.
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©  The Marine Biological Association of the United Kingdom

Source: Marine Life Information Network

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Ecology

Habitat

Depth range based on 106 specimens in 1 taxon.
Water temperature and chemistry ranges based on 7 samples.

Environmental ranges
  Depth range (m): 0 - 79
  Temperature range (°C): 6.832 - 6.832
  Nitrate (umol/L): 2.178 - 2.178
  Salinity (PPS): 10.036 - 10.036
  Oxygen (ml/l): 7.360 - 7.360
  Phosphate (umol/l): 0.469 - 0.469
  Silicate (umol/l): 11.042 - 11.042

Graphical representation

Depth range (m): 0 - 79
 
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Depth range based on 2 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 11 - 11.3
  Temperature range (°C): 11.849 - 11.849
  Nitrate (umol/L): 3.346 - 3.346
  Salinity (PPS): 31.677 - 31.677
  Oxygen (ml/l): 6.227 - 6.227
  Phosphate (umol/l): 0.737 - 0.737
  Silicate (umol/l): 12.005 - 12.005

Graphical representation

Depth range (m): 11 - 11.3
 
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 Limited to estuarine habitats. Found on various substrata from low shore to shallow water, including fronds of fucoids
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Source: Marine Life Information Network

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