Table 3.
Environmental variables | 2004 | 2005 | Difference | ||||
---|---|---|---|---|---|---|---|
% connected puddles | 0·71 | 0·71 | n.s. | ||||
% puddles with tracks | 0·76 | 0·80 | n.s. | ||||
% dried puddles | 0·57 | 0·50 | n.s. | ||||
Vegetation cover† | 0·43 | 0·52 | 0·05 | 0·55 | 0·40 | 0·05 | n.s. |
Sunlight intensity‡ | 0 | 0·33 | 0·67 | 0·05 | 0·60 | 0·35 | n.s. |
Mean number of connections§ | 3·8 ± 2·8 | 2·2 ± 0·4 | n.s. | ||||
Mean plant density | 97·4 ± 73·2 | 52 ± 48·7 | * |
The environmental variables are the connection status (% of connected puddles), indication of animal or human disturbance (% of puddles with tracks), presence of water (% of dried puddles), ground vegetation cover, sunlight intensity, mean number of connections and mean plant density per quadrat (the asterisk indicates a significant difference between the 2 years, P < 0·05).
In 2005, one puddle went extinct and environmental data were not recorded.
† Distribution of vegetation cover across puddles, with three classes: low, medium and high.
‡ Distribution of sunlight intensity across puddles, with three classes: low, medium and high.
§ For connected puddles only.