State of knowledge of the Corallinales (Rhodophyta) of Tierra del Fuego and the Antarctic Peninsula

Corallinales (Rhodophyta) in Tierra del Fuego are abundant, with 9 genera, 17 species and 1 subspecies. Pseudolithophyllum with 1 species (P. fueguianum), which represents 35.8% of the coralline algae, is dominant. The genera Parahydrolithon with 4 species (P. consociatum, P. discoideum, P. falkland...

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Bibliographic Details
Published in:Scientia Marina
Main Author: Mendoza, María Laura
Format: Article in Journal/Newspaper
Language:English
Published: Consejo Superior de Investigaciones Científicas 1999
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Online Access:https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/897
https://doi.org/10.3989/scimar.1999.63s1139
Description
Summary:Corallinales (Rhodophyta) in Tierra del Fuego are abundant, with 9 genera, 17 species and 1 subspecies. Pseudolithophyllum with 1 species (P. fueguianum), which represents 35.8% of the coralline algae, is dominant. The genera Parahydrolithon with 4 species (P. consociatum, P. discoideum, P. falklandicum, P. subantarcticum) and 20%, Lithothamnion with 3 species (Lt. heterocladum, Lt. rugosum, Lt. granuliferum) and 17.5%, and Synarthrophyton with 3 species (S. neglectum, S. patena, S. schmitzii) and 12% share are abundant. Clathromorphum with 4 species (Cl. annulatum, Cl. lemoineanum, Cl. obtectulum, Cl. Variabile) and a share of 5.8%, and Mesophyllum with 1 species (M. fueguianum) and a share of 4.9% are frequent. The remaining three genera, Bossiella with 1 subspecies (B. orbigniana ssp. orbigniana), Corallina with 2 species (C. elongata, C. officinalis) (1.1%), and Titanoderna with 1 species (T. conspectum) (1%) are scarce. C. officinalis is a cosmopolitan, and the other geniculate corallines are found in both hemispheres, whereas the crustose coralline occur only in the southern hemisphere. The characteristic vertical distribution of the species in the intertidal and subtidal zone of Tierra del Fuego is given. The Corallinales in the Antarctic Region are poorly known and need further investigation. En Tierra del Fuego las Corallinales (Rhodophyta) son abundantes y están representadas por 9 géneros con 17 especies y 1 subespecie. Pseudolithophyllum con 1 única especie (P. fueguianum) es dominante y representa el 35,8% de las algas calcáreas. Parahydrolithon con 4 especies (P. consociatum, P. discoideum, P. falklandicum, P. subantarcticum) (20%), Lithothamnion con 3 especies (Lt. heterocladum, Lt. rugosum, Lt. Granuliferum) (17,5%) y Synarthrophyton con 3 especies (S. neglectum, S. patena, S. schmitzii) (12%) son abundantes. Clathromorphum con 4 especies (Cl. annulatum, Cl. lemoineanum, Cl. obtectulum, Cl. variabile) (5,8%) y Mesophyllum con 1 especie (M. fueguianum) (4,9%) son frecuentes. Bossiella con 1 subespecie (B. orbigniana ssp. Orbigniana), Corallina con 2 especies (C. elongata, C. officinalis) (1%) y Titanoderna con 1 especie (T. conspectum) (1%) son escasas. C. officinalis es cosmopolita, las otras especies geniculadas crecen en ambos hemisferios, y las incrustantes son exclusivas del hemisferio austral. Se señala la distribución vertical de las especies en las zonas intermareal y submareal. Los trabajos de las Corallinales de la región Antártica son escasos, no pudiéndose precisar la biodiversidad de este grupo algal.