Domain Inventory Project

23 March 2005

Domain Compartments

Points sampled, 1996-2001

Data collection A total of 1786 points (“plots”) were sampled Data collected on 1/20 acre included

Tree species Diameter at breast height (dbh) Canopy class (dominating, <50%, not present, etc.) Height at which dbh = 8” and dbh = 4” Number of vines and/or cavities Snag class Basal area

Excel example

What to do with the data? Explore plateau vs. cove differences Quantify amount of timber that could be

harvested by compartment Look at species richness

Differences between Plateau and Cove Plateau

Soils primarily derived from sandstone

Relatively water-restricted

pH relatively acidic Few nutrients High light

Cove Soils derived from

shale and limestone Damper than Plateau pH buffered by shale

& limestone, so less acidic

More nutrients Low light

Red Maple Acer rubrum

Sugar Maple Acer saccharum

Mean basal area

Tree richness

ProcessesForestry

Computer Science Biology

Attribute table matching

Completed Queries Density by species by Cclass

For each species, count the number of records for each Cclass 1 through 4 per Plot

Density by species Count number of records by species per plot

Density by Cclass Count number of records by Cclass per plot

Species richness Count number of unique species per plot

Basal area per plot Sum basal area per plot

Queries to be Completed Species richness by compartment Cclass by species by compartment Diversity by compartment Mean snag density by compartment Mean # of cavities per compartment

Shannon-Weiner Diversity Index -Σpi ln pi

-Σpi ln pi = 1.269

Species # of individuals p ln p p ln pA 50 0.5 -0.693147181 -0.34657359B 25 0.25 -1.386294361 -0.34657359C 15 0.15 -1.897119985 -0.284567998D 7 0.07 -2.659260037 -0.186148203E 3 0.03 -3.506557897 -0.105196737

-1.269060118