Seasonal ecophysiology of two paramo species: the dominance of light over water limitations.

ABSTRACT: Dry and rainy seasons in many ecosystems differ significantly in cloudiness, precipitation, and incident sunlight. These seasonal variations can influence photosynthesis by altering light availability and water stress. This study examines whether light availability or water stress is the primary limiting factor for photosynthesis in páramo plants during the dry and rainy seasons. We measured photosynthetic carbon gain per unit leaf area (A_n ), stomatal conductance (g_s ), chlorophyll fluorescence (ϕPSII), and leaf water potentials, in two dominant páramo species, Espeletia grandiflora and Chusquea tessellata, across both seasons. Photosynthetic light-response curves were generated for each species, and statistical analyses assessed the relat

SUBMITTER: Sanchez A 

PROVIDER: S-EPMC12034633 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature