Volume 24, Number 1—January 2018
Dispatch
Rodent Abundance and Hantavirus Infection in Protected Area, East-Central Argentina
Table 2
Explanatory variable | Akodon azarae grass mouse |
Oligoryzomys nigripes black-footed pigmy rice rat |
O. flavescens yellow pigmy rice rat |
||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Estimate | SE | p value | Estimate | SE | p value | Estimate | SE | p value | |||
Meteorological model | (28.90%) | (35.50%) | (15.45%) | ||||||||
Intercept (riparian forest) | −2.937bc | 0.604 | <0.001 | 6.033a | 0.435 | <0.001 | −1.586 | 1.217 | 0.193 | ||
Celtis tala forest | −1.426e | 0.415 | <0.001 | −1.972b | 0.678 | 0.004 | – | – | |||
Lowland grassland with Cyperaceae spp. | −0.923de | 0.302 | 0.002 | – | – | – | −0.962 | 0.489 | 0.049 | ||
Highland grassland with Ligustrum spp. | −0.161cd | 0.261 | 0.536 | −1.555b | 0.520 | 0.003 | −1.631 | 0.604 | 0.007 | ||
Highland grassland with livestock | 0.169ab | 0.278 | 0.543 | – | – | – | −0.709 | 0.560 | 0.206 | ||
Salty grassland | 0.390a | 0.242 | 0.107 | – | – | – | −0.932 | 0.489 | 0.057 | ||
Rain60 | 0.002 | 0.001 | 0.001 | 0.006 | 0.002 | <0.001 | – | – | – | ||
MaxT | −0.049 | 0.018 | 0.005 | – | – | – | −0.120 | 0.040 | 0.002 | ||
ONI |
0.513 |
0.098 |
<0.001 |
0.408 |
0.384 |
0.289 |
0.305 |
0.270 |
0.258 |
||
Vegetation model | (12.34%) | (11.46%) | (6.37%) | ||||||||
Intercept | −3.210 | 0.166 | <0.001 | −8.999 | 1.230 | <0.001 | −7.070 | 0.459 | <0.001 | ||
Height | −0.255 | 0.038 | <0.001 | – | – | – | – | – | – | ||
GBroad |
– |
– |
– |
−0.025 |
0.010 |
0.013 |
0.020 |
0.008 |
0.011 |
||
Hydrological model | (22.10%) | (16.85%) | – | ||||||||
Intercept (riparian forest) | −5.289 | 0.282 | <0.001 | −6.068 | 0.636 | <0.001 | – | – | – | ||
Celtis tala forest | −1.275 | 0.412 | 0.002 | −1.514 | 0.653 | 0.020 | – | – | – | ||
Lowland grassland with Cyperaceae spp. | −0.732 | 0.300 | 0.015 | – | – | – | – | – | – | ||
Highland grassland with Ligustrum spp. | 0.012 | 0.260 | 0.964 | −1.245 | 0.511 | 0.015 | – | – | – | ||
Highland grassland with livestock | 0.278 | 0.276 | 0.313 | – | – | – | – | – | – | ||
Salty grassland | 0.560 | 0.241 | 0.020 | – | – | – | – | – | – | ||
MeanWat | 1.149 | 0.199 | <0.001 | 1.183 | 0.585 | 0.043 | – | – | – |
*The percentage of variance explained by each model is shown in parentheses in the first line above the explanatory variables. Superscript letters show significant differences in abundance among habitat types (p<0.05 by multiple Tuckey comparisons). O. flavescens yellow pigmy rice rats did not show differences in abundance among habitat types. Height, maximum vegetation height; GBroad, fresh broadleaf cover; MaxT, maximum temperature during the month before each trapping session; MeanWat, mean water level during the month before each trapping session; ONI, Oceanic Niño Index; Rain60, monthly accumulated rainfall applying a time lag of 2 months; –, not included in the final model.
1These authors contributed equally to this article.
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