Table 2

Table 2. Pre- and postburn cover and frequency (percentage of plots) of common species in 13 plots established under dense Arctostaphylos morroensis prior to fire. Invasive exotic species are denoted by the superscript i.

Preburn

Three years after fire

Species

Mean
cover (%)

Frequency
(%)

Mean
density/m²

Mean
cover (%)

Frequency
(%)

Mean
density/m²

Shrubs

  Arctostaphylos morroensis

99.5

100

0.9

<1

30

0.4

  Artemisia californica

0.4

8

7

61

  Baccharis pilularis

0

0

4

38

  Ceanothus cuneatus

0

0

<1

2

Subshrubs

  Ericameria ericoides

0

0

<1

1

  Eriophyllum confertiflorum

<1

8

1

1

  Lotus scoparius

0

0

5

23

  Mimulus aurantiacus

<1

8

2

2

  Solanum umbelliferum

0

0

3

46

Herbs and grasses

  Amsinkia spectabilis

0

0

2

38

  Chorizanthe angustifolia

0

0

1

2

  Claytonia perfoliata

0

0

1

46

  Conocosia pugioniformisⁱ

0

0

<1

15

  Conyza canadensis

0

0

1

1

  Cryptantha spp.

0

0

1

2

  Ehrharta calycinaⁱ

0

0

2

23

  Gnaphalium bicolor

0

0

2

23

  Gnaphalium ramosissimum

0

0

3

23


	Preburn			Three years after fire

Species	Mean cover (%)	Frequency (%)	Mean density/m²	Mean cover (%)	Frequency (%)	Mean density/m²

Shrubs
Arctostaphylos morroensis	99.5	100	0.9	<1	30	0.4
Artemisia californica	0.4	8		7	61
Baccharis pilularis	0	0		4	38
Ceanothus cuneatus	0	0		<1	2

Subshrubs
Ericameria ericoides	0	0		<1	1
Eriophyllum confertiflorum	<1	8		1	1
Lotus scoparius	0	0		5	23
Mimulus aurantiacus	<1	8		2	2
Solanum umbelliferum	0	0		3	46

Herbs and grasses
Amsinkia spectabilis	0	0		2	38
Chorizanthe angustifolia	0	0		1	2
Claytonia perfoliata	0	0		1	46
Conocosia pugioniformisⁱ	0	0		<1	15
Conyza canadensis	0	0		1	1
Cryptantha spp.	0	0		1	2
Ehrharta calycinaⁱ	0	0		2	23
Gnaphalium bicolor	0	0		2	23
Gnaphalium ramosissimum	0	0		3	23