Progress Report: Chiricahua fire-history gradient analysis and spruce-fir age structure; Cooperative Agreement #28-C4-858, Regional Dendroecology sub- project IV, parts 1 and 2.

Project Status

To meet the objectives of this project field trips were conducted during the summer of 1996. A total of 72 firehistory samples were collected in 12 sub-sites. Samples were collected along an elevation gradient and a range of aspects (Table 1).

Site ID	Site Name	# Smp	# fhx	Comments
BWF	Bear Wallow Flat	3
BGS	Booger Spring	10
WCP	W. of Cima Park	6
SCP	S. of Cima Park	8
UWC	Upper Ward Cyn.	4
ORO	Op. Rocky Outcrop	5
UMC	Upper Mormon Cyn.	10
SDC	Sandy Corner	5
MMC	Mid Mormon Cyn.	6
SAB	Steep and Burnt	3
MCS	Mormon Cyn. Spring	7
LMC	Lower Mormon Cyn.	5
total	total
12	72

Spruce-fir age structure and fire history

A 400m age-structure transect was sampled on the north face of Flys Peak. 450 trees were cored for age determination and over 1200 seedlings were tallied. Fire-effects from the 1994 Rattlesnake Fire were also noted as they impacted the sampled area. Five fire-scarred trees were sampled in the vicinity of the transect to determine precise fire dates for fires affecting the transect area. Additionally, four aspen stands were cored to determine their establishment dates.

To date all samples have been prepared for analysis and fire-scarred specimens have been crossdated.

Site ID	Species	Site name	Number of samples	Comments
Mos	mixed	Mosca	460/1200
FP2	pine	Fly peak 2	5
FP2	aspen	Fly Peak 2	25
WCU	aspen	Ward Cyn Upper	15
LBS	mixed	Lower Booger Sp.	149
UBS	mixed	Upper Booger Sp.	157
UCR	mixed	Upper Cima Ridge	127
MCR	mixed	Middle Cima	103
LCR	mixed	Lower Cima	122
BSA	aspen	Booger Sp.	17
CPA	aspen	Junction Saddle	15
CPB	aspen	Junction Saddle	20
CPC	aspen	Junction Saddle	17
ASA	aspen	Anita Springs	16