Trees with anisohydric behavior as main drivers of nocturnal evapotranspiration in a tropical mountain rainforest.

ABSTRACT: This study addresses transpiration in a tropical evergreen mountain forest in the Ecuadorian Andes from the leaf to the stand level, with emphasis on nocturnal plant-water relations. The stand level: Evapotranspiration (ET) measured over 12 months with the Eddy-Covariance (ECov) technique proved as the major share (79%) of water received from precipitation. Irrespective of the humid climate, the vegetation transpired day and night. On average, 15.3% of the total daily ET were due to nocturnal transpiration. Short spells of drought increased daily ET, mainly by enhanced nighttime transpiration. Following leaf transpiration rather than air temperature and atmospheric water vapor deficit, ET showed its maximum already in the morning hours. The tree level: Due to the humid climate, the total w

SUBMITTER: Raffelsbauer V 

PROVIDER: S-EPMC10065286 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature