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Effects of stem and pith eccentricity on the accuracy of basal area increment estimations

Effects of stem and pith eccentricity on the accuracy of basal area increment estimations

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Authors

Julie Messier, Christina AM Rossi

Abstract

Accurate tree growth quantification is crucial in ecology to assess tree growth. Basal area increment (BAI) is typically calculated from tree rings on increment cores, assuming trees are perfect circles with centered piths. However, trees often have pith offset and stem out-of-roundness, leading to estimation errors. Yet, we do not know how much estimation error results from these eccentricities. Using geometric principles that hold across all tree sizes, we quantified the effects of these eccentricities on BAI accuracy by comparing estimates from four calculation methods and varying core numbers (one to four) against true BAIs taken from cro...  more

DOI

https://doi.org/10.32942/X28639

Subjects

Terrestrial and Aquatic Ecology

Keywords

Basal area increment, tree growth, stem eccentricity, pith offset, out-of-roundness, coring, estimation error, growth rings, tree growth, stem eccentricity, pith offset, out-of-roundness, coring, estimation error, growth rings

Dates

Published: 2024-12-23 09:37

License

CC-By Attribution-NonCommercial-NoDerivatives 4.0 International

Additional Metadata

Conflict of interest statement:
None

Data and Code Availability Statement:
Open data/code are not available yet

Language:
English