Table 2 General hypotheses to explain genetic diversity and differentiation in Ameivula ocellifera

From: Climatic suitability, isolation by distance and river resistance explain genetic variation in a Brazilian whiptail lizard

 

Hypothesis

Variables used to test

Genetic diversity

Climatic suitability

Climatic suitability (current and LGM)

BIO3, BIO4, and BIO6 (current and LGM)

Climatic stability

Refugia

Water and energy availability

BIO1, BIO12, AET, and NPP

Environmental heterogeneity

Topographic complexity (derived from altitude)

Colonization

Geographical distance of each locality to the CD

Genetic differentiation

Geographical distance

Euclidean geographical distances between localities

Current climatic connectivity

Current climatic suitability

LGM climatic connectivity

LGM climatic suitability

Resistance of slope

Slope (derived from altitude)

Resistance of roughness

Roughness (derived from altitude)

Resistance of rivers

Main perennial rivers

  1. LGM last glacial maximum, BIO3 Isothermality, BIO4 temperature seasonality, BIO6 minimum temperature of coldest month, BIO1 annual mean temperature, BIO12 annual precipitation, AET actual evapotranspiration, NPP net primary productivity, CD center of diffusion
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