The distribution and size structure of tussocks of the population of Deschampsia antarctica Desv. was studied in the Coppermine Peninsula, Robert Island. Different study sites showed predominance of smaller turfs. This suggests that D. antarctica is a colonising in the peninsula. The plant was found in small patches in 15 sites, being the total amount of tussocks in the island less than 10.000. Coverage by D. antarctica in these patches ranged from 0.18% to 1.96%.
The population of D. antarctica existing in Robert Island was sensed. This plant usually grows in Robert Island as isolated tussocks. The areas of the sites where this species was found were recorded and all the individual tussocks were counted and measured. The size of each tussock was classified in five centimeter intervals. The size structure distribution at different sites was compared by the non-parametric test for two samples.
Universidad e Chile, Depto de Biologia
Las Palmeras 3425
Casaretto, J.; Corcuera, J.L.; Serey I. and Zuniga G., 1994. Size structure of tussocks of a population of Deschampsia antarctica Desv. in Robert Island, Maritime Antarctica. Ser. Cient. INACH44:61-66.