Transpiration shallow avalanche deep avalanche dry

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: nt of elastic stems. Transpiration Shallow avalanche Deep avalanche Dry sand W et sand Dry sand 0.2 0.1 0.05 Pressure of dry sand avalanches (0.00187 N mm-2) 0.02 0.01 0.005 __________ Sand Stem tip movement acting on: __________ 1/10th of leaf area S.plumieri I.pes-caprae A.populifolia S.plumieri I.pes-caprae A.populifolia I.pes-caprae 0.0002 0.0001 0.00005 S.plumieri 0.002 0.001 0.0005 A.populifolia Pressure needed to bend o -2 a stem by 30 (N mm ) Compact, wet sand layer ___ Entire leaf Transpiration SPAC A cell pressure probe in action: http://www.plantsciences.ucdavis.edu/plant sciences_faculty/zwieniecki/methods/Press ureProbe/pressureprobe.html Transpiration Air-Plant-Soil Continuum (the end) • Stoma - Air – – – – Boundary layer Transpiration tradeoff Stomatal conductance Leaf anatomy/morphology – Stomatal function two ep Stoma = 1 complex of 2 guard cells with 2 epidermal cells (stomate=stoma) Stomata = many Air – Plant – Soil Continuum Images of stomata (closed) from each of the four sp...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online