Table 2 Plant cover and species richness of native and non-native plants and of natives by life form (annual or perennial) before and after spring and fall burns in southwestern Oregon, USA. Percent cover (median) and species counts (mean) were based on thirty 1 m2 plots at two replicate sites.
Cover | Species richness | |||||||
|---|---|---|---|---|---|---|---|---|
Native | Non-native | Native | Non-native | |||||
Treatment | Δ cover | % change | Δ cover | % change | Δ species | % change | Δ species | % change |
Control | −6.2 | 10.9 | 28.8 | 101.9 | 2 | 14.3 | 3.5 | 24.0 |
Spring burn | −20.9 | −29.3 | 36.8 | 151.7 | 7 | 36.8 | 5 | 26.5 |
Fall burn | −2.1 | 1.5 | −0.1 | −0.4 | 5 | 26.9 | 3 | 7.1 |
Native annual | Native perennial | Native annual | Native perennial | |||||
Treatment | Δ cover | % change | Δ cover | % change | Δ species | % change | Δ species | % change |
Control | −8.2 | 17.2 | 2.2 | 2.1 | 3 | 36.1 | −1 | −7.1 |
Spring burn | −2.1 | −3.9 | 0.4 | 43.3 | 5.5 | 61.1 | 2 | 13.0 |
Fall burn | −31.6 | −53.9 | 10.2 | 82.3 | 2.5 | 35.7 | 2.5 | 23.6 |