sentences:  High altitude Andean lakes such as Lejía Lake are studied as potential analogues to waterbodies on Mars, given similarities between their present-day environment and the environments of early Mars.Shoreline vegetation consists of "Calandrinia", "Deyeuxia", "Puccinellia" and "Stipa" species, which occur close to waterbodies and springs.Grass and shrub vegetation of the Puna occurs in the lake basin at elevations of less than ; at higher elevation bunch grass, cushion plants and rosette plants form a distinct and sparse vegetation.