Dumontia contorta (Marine Algae of Cape Cod, Massachusetts and Adjacent Islands)

Dumontia contorta

Taxon biology ⁷

You don't expect seaweeds to flourish in the winter, but Dumontia contorta does. That is, it germinates in the autumn on stones and develops long thin fronds in late winter and early spring. It slowly perishes by the end of May. The only evidence you find of this seaweed in the summer is its base (the holdfast), attached to rocks. It is relatively common in tidal pools in the Wadden Sea and delta region. Its name contorta is related to the fact that the fronds are often twisted (contorted).

Habitat ⁸

Depth range based on 40 specimens in 1 taxon.
Water temperature and chemistry ranges based on 8 samples.

Environmental ranges
  Depth range (m): 0 - 2.25
  Temperature range (°C): 11.471 - 12.348
  Nitrate (umol/L): 4.729 - 6.151
  Salinity (PPS): 35.184 - 35.363
  Oxygen (ml/l): 6.128 - 6.200
  Phosphate (umol/l): 0.336 - 0.421
  Silicate (umol/l): 2.315 - 3.285

Graphical representation

Depth range (m): 0 - 2.25

Temperature range (°C): 11.471 - 12.348

Nitrate (umol/L): 4.729 - 6.151

Salinity (PPS): 35.184 - 35.363

Oxygen (ml/l): 6.128 - 6.200

Phosphate (umol/l): 0.336 - 0.421

Silicate (umol/l): 2.315 - 3.285

Note: this information has not been validated. Check this note. Your feedback is most welcome.