Rhodophyta - Corallinales

Question 1

taxonomy of corallinales

Answer 1

class: Florideophyceae
order: Corallinales

Question 2

Answer 2

Florideophyceae
Corallines that form coralligenous biocenosis

Question 3

most common Rhydophyta of coralligenous biocenosis

Answer 3

species belonging to the genera
- Lithophyllum
- Pseudolithophyllum
- Mesophyllum
- Lithothamnion
able to form calcareous encrustations and build thick deposits.

Question 4

Answer 4

• trottoirs
• structures of mediterranean
  consisting of
• Lithophyllum tortuosum, accompanied and reinforced at the base by other calcareous algae
• Rhodophycean: Peyssonnelia species
• sciaphilous chlorophytes: Halimeda, Udotea species
• & associated with many other algae

Question 5

Answer 5

Rhodophyta
- Peyssonnelia sp.
- trottoir
- amount of CaCarbonate not that high: soft thalli

Question 6

Answer 6

Rhodophyta
- Lithophyllum sp.
- trottoir
- amount of CaCarbonate high: similar to rocks

Question 7

Answer 7

NOT corallinales
but:
- Florideophyceae
- filamentous
- branched
- uniaxial

Question 8

Answer 8

Question 9

Answer 9

Question 10

Answer 10

from introduced in area of north Atlantic sea
first record was in area of po delta
discovery for first time in po delta was first time discovered in mediterr. sea

Question 11

Answer 11

able to change aspect of thalli depending on diff. envir. cond.

important to carry out integrative approach! Very important to use molecular approach, not only morphology,

because here: diff. color and diff. morphologie  linked to different sampling stations (diff. environment)