Table 2.
Summary results from site-level analyses of annual collections, mosquito species richness, and mosquito species evenness by time, climate, land cover, and spatial location.
| Site-level variable | Year (GLMMs) | Climate variables (correlation) | Land cover (correlation) | Spatial orientation (GAMMs) |
|---|---|---|---|---|
| Annual abundance | Increasing |
Temperature None |
Positive: barren, forested wetland, non-forested wetland | Latitude: positive, increasing from south to north |
|
Precipitation Summer: positive |
Negative: grass | Longitude: positive, increasing from west to east | ||
| Annual species richness | Increasing |
Temperature None |
Positive: forested sites (coniferous, deciduous, wetland) | Latitude: positive, increasing from south to north |
|
Precipitation None |
Negative: barren, developed, grass, open water | Longitude: positive, increasing from west to east | ||
| Annual species evenness | Decreasing |
Temperature Spring minimum: negative |
Positive: deciduous and forested wetlands | Latitude: positive, increasing from south to north |
|
Precipitation None |
Negative: barren, developed, open water | Longitude: positive, increasing from west to east | ||
| Annual richness/evenness correlation | No trend |
Temperature Spring maximum: positive |
Positive: coniferous forest | Latitude (correlation): positive, increasing from south to north |
|
Precipitation None |
Negative: None | Longitude (correlation): none |