Fir {emdbook}

Data on fir (Abies) life history

Description

Data on various aspects of life history (diameter at breast height, onset of reproduction, crowding, fecundity) from subalpine Abies balsamea, from Dodd and Silvertown

Usage

data(FirDBHFec)
data(FirDBHFec_sum)

Format

DBH

diameter in m at breast height (1.4 m)

fecundity

number of cone rachises [per year?]

pop

which population (wave, nonwave) an individual was sampled from

VAR1

location

WAVE_NON

non-wave (n) or wave (w)

TREE_NO

tree number

C1991

1991 cones

C1992

1992 cones

C1993

1993 cones

C1994

1994 cones

C1995

1995 cones

C1996

1996 cones

C1997

1997 cones

C1998

1998 cones

C1999

1999 cones

NOTES_IN

notes

G1990

1990 growth

G1991

1991 growth

G1992

1992 growth

G1993

1993 growth

G1994

1994 growth

G1995

1995 growth

G1996

1996 growth

G1997

1997 growth

G1998

1998 growth

DBH

diameter at breast height

DBH_MM

dbh in mm

DBH_2

?

DBH_2MM

?

AGE

?

GOOD_OR

?

PC1998

?

AC1998

?

PC1994

?

AC1994

?

R3PC1998

?

RPC1994

?

RAC1994

?

RLOOKOUT

?

RSHREWYS

?

RWILLS

a factor with levels 0 1 Fajita

C8TOT

?

G8TOT

?

RAC1994I

?

RPC1994I

?

R3PC1998.1

?

AC1998I

?

TOTCONES

total cones

Source

J. Silvertown and M. Dodd, Evolution of life history in balsam fir (Abies balsamea) in subalpine forests, Proc. Roy. Soc. Lond. B (1999) 266, 729-733.

References

M. Dodd and J. Silvertown, Size-specific fecundity and the influence of lifetime size variation upon effective population size in Abies balsamea

Examples

data(FirDBHFec_sum)
attach(FirDBHFec_sum)
plot(DBH,fecundity,col=as.numeric(pop),pch=as.numeric(pop))
lms = lapply(split(FirDBHFec_sum,pop),lm,formula=fecundity~DBH)
for (i in 1:2) abline(lms[[i]],col=i)
detach(FirDBHFec_sum)