In 2006, to obtain a measure of pinon and juniper biomass in the Cerro Montosa area, belt transects were superimposed on transects along which understory net primary producitivy (NPP) is sampled. All trees rooted within 5 m to the north of each belt were tagged, although some shorter belts exist on which all trees within 5 m to either the north or south were tagged. The height of each tagged tree was measured, as was the diameter-at root-crown (DRC). Crown diameters both parallel and perpendicular to the belt transect were also measured. Trees were re-measured in 2007, 2008, and 2009.
Each 100m transect on webs 1 and 2, positioned along the existing understory net primary production (NPP) transects, is delineated with a tape measure. All trees rooted within 5 m to the north of each transect have been tagged with a numbered aluminum identification tag. The diameter-at-root-crown (DRC) of all boles greater than 2.5 cm on these trees is measured and recorded. The height of each tree is measured using a range pole extended near the highest point of the tree. Finally, the diameter of the crown both parallel and perpendicular to the belt transect is measured.
Transects at web 3 are shorter (50m) and thus 5 m to both the north and south of each transect is included within the belt.
3/8/10-Data and metadata compiled and updated through 2009. (JMM) Metadata created and compiled from 2006 to 2008 based on metadata and data supplied by Doug Moore. (YX)