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Environment of a Costa Rican Forest
Author(s) -
Allen L. H.,
Lemon Edgar,
Müller Ludwig
Publication year - 1972
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1935714
Subject(s) - canopy , environmental science , tree canopy , anemometer , stratification (seeds) , atmospheric sciences , daytime , sink (geography) , wind speed , nocturnal , microclimate , hydrology (agriculture) , ecology , geography , meteorology , geology , biology , seed dormancy , botany , germination , cartography , geotechnical engineering , dormancy
Wind speed and turbulence were measured at five heights simultaneously in a Costa Rican forest with non—stalling, heated—thermocouple anemometers. A persistent daytime stable thermal stratification of the air beneath the top canopy decreased small—scale turbulence, which may increase boundary—layer resistance of leaf—to—air transport of water vapor and CO 2 . Three CO 2 source layers (ground level, trunk space, and above the top canopy) and two CO 2 sink layers (top canopy and bottom canopy) were found in this forest. Low nocturnal wind speed allowed CO 2 from respiration to accumulate at night.