Observaciones fito-ecológicas en las Islas Diego Ramírez
Cargando...
Fecha
1972
Autores
Título de la revista
ISSN de la revista
Título del volumen
Editor
Resumen
Se da cuenta de observaciones fito-ecológicas realizadas en una visita a la isla Gonzalo, en el archipiélago Diego Ramírez (56º 31' S—68º 44' W), efectuada el 13-1-72. Se describen las islas en base a las observaciones realizadas y a la revisión de la escasa literatura existente, indicándose una precipitación de 1.690 mm. anuales. Se destacan las características de su vegetación en comparación a las de Tierra del Fuego y se propone su inclusión en una nueva Provincia Biótica que podría denominarse Gramíneo-Turbosa Sub-A titánica. Se reconocen y describen las asociaciones vegetales: Poa flabellata y Colobanthus quitensis-Plantago barbata. Las especies colectadas son las siguientes: Colobanthus quitensis (Kunth) Bartl., Crassula moschata Forst. f., Plantago barbata Forst. f., y Poa flabellata (Lam.) Hook. f., de las que se describe su estado vegetativo en la época de colecta y se expone su distribución geográfica. Se adjuntan además algunos datos sobre su fauna y basándose en la nidificación de dos especies de albatros se sugiere su separación del Distrito faunístico Islas Australes de Tierra del Fuego.
Phyto-ecological observations made at isla Gonzalo in Diego Ramírez Islands (56º 31' lat. S— 68º 44' long. W) during a voyage in 13 January, 1972 are reported. The islands are described in base at the observations made and a revisión of the scanty literature available on them. An annual precipitación of. 1,690 mm. is reported. The characteristics of its vegetation are enhanced in comparison with those of southern Tierra del Fuego and the inclusion of the area in a differente Biotic Province, which might be denominated as Sub-A niarlie Gramineous Peat is propossed. Two plant associations: Poa flabellata and Colobanthus quitensis-Planiago barbata are recognized and described. The following collected species: Colobanthus quitensis (Kunth) Bartl., Crassula moschata Forst, f., Plantago barbata Forst. f., and Poa flabellata (Lam.) Hook. f., are mentioned with description of their vegetative stage at collection time and their geographical areas are exposed. Some notes on fauna are added, and the separation of the archipielago form Markham's Austral Islands Faunistic District is propossed on the basis of nidyfication of two albatrosses species.
Phyto-ecological observations made at isla Gonzalo in Diego Ramírez Islands (56º 31' lat. S— 68º 44' long. W) during a voyage in 13 January, 1972 are reported. The islands are described in base at the observations made and a revisión of the scanty literature available on them. An annual precipitación of. 1,690 mm. is reported. The characteristics of its vegetation are enhanced in comparison with those of southern Tierra del Fuego and the inclusion of the area in a differente Biotic Province, which might be denominated as Sub-A niarlie Gramineous Peat is propossed. Two plant associations: Poa flabellata and Colobanthus quitensis-Planiago barbata are recognized and described. The following collected species: Colobanthus quitensis (Kunth) Bartl., Crassula moschata Forst, f., Plantago barbata Forst. f., and Poa flabellata (Lam.) Hook. f., are mentioned with description of their vegetative stage at collection time and their geographical areas are exposed. Some notes on fauna are added, and the separation of the archipielago form Markham's Austral Islands Faunistic District is propossed on the basis of nidyfication of two albatrosses species.
Descripción
Palabras clave
Ecología vegetal
Citación
Anales del Instituto de la Patagonia. Vol. 3, nº 1-2, 1972. pp. 161-169.