HB 2018- Going with the flow

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M

Arianna Libenson

Going with the flow: is
tree water use affected
by nutrient availability?
Arianna Libenson
Mentors:Alex Rice, Mariann Johnston
and RuthYanai

1.Determine if the addition of N, P, or Ca has any
impact on sap flux in hardwood trees.
2.Compare sap flux amongst species of red
maple, sugar maple, and white birch.
Objectives
Experimental Design
• HB mid, 9 trees per plot, 3 per species
• Granier method

Previous Results
• Are we unable to detect a treatment effect due to
extreme tree-to-tree variability???
Con N P NP Ca
Daily Sum of Sap Flux
SapFlux(gH2O/m2sapwood/day)
Treatment
• C8
• 2017
• 1 observation point
per tree
Graph byAlex Rice

This year…
• Covariates: diameter at crown base (DCB) and DBH
• HB Ca plot, last wollastonite addition in 2015
• Better drilling!!!
• Does anyone want to help move batteries into our HB plots?!

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HB 2018- Going with the flow

1. Going with the flow: is tree water use affected by nutrient availability? Arianna Libenson Mentors:Alex Rice, Mariann Johnston and RuthYanai

2. 1.Determine if the addition of N, P, or Ca has any impact on sap flux in hardwood trees. 2.Compare sap flux amongst species of red maple, sugar maple, and white birch. Objectives Experimental Design • HB mid, 9 trees per plot, 3 per species • Granier method

3. Previous Results • Are we unable to detect a treatment effect due to extreme tree-to-tree variability??? Con N P NP Ca Daily Sum of Sap Flux SapFlux(gH2O/m2sapwood/day) Treatment • C8 • 2017 • 1 observation point per tree Graph byAlex Rice

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