Table 2.
Overview of derived quantitative conduit characters with reference to their acronym, definition, formula, and units.
| Acronyms | Definition | Formula | Units |
|---|---|---|---|
| AP | Total intervessel pit membrane surface area per vessel area | AV × FP | mm2 |
| AV | Vessel surface area | Π × DRL × LV | mm2 |
| F | Vessel lumen fraction (NF = non-vessel lumen fraction) | F = VD × VA | – |
| NF = 1 – F | |||
| FLC | Vessel contact length fraction | LC/LV = 1 – VS | – |
| FP | Pit fraction = mean fraction of the vessel area occupied by intervessel pits | FC × FPF | – |
| LC | Total inter vessel contact length = average contact length between adjacent vessels = average length of vessel end walls | LV × (1 – VS) | cm |
| MI | Mesomorphy index following Carlquist (1977) | VI × LVE | μm2 mm−2 |
| VI | Vulnerability index following Carlquist (1977) | D/VD | μm mm−2 |
| (TVW/DMAX)2 | Theoretical vessel implosion resistance | (TVW/DMAX)2 | – |