Are range-size distributions consistent with species-level heritability?

TY - JOUR

T1 - Are range-size distributions consistent with species-level heritability?

AU - Borregaard, Michael Krabbe

AU - Gotelli, Nicholas

AU - Rahbek, Carsten

PY - 2012/7

Y1 - 2012/7

N2 - The concept of species-level heritability is widely contested. Because it is most likely to apply to emergent, species-level traits, one of the central discussions has focused on the potential heritability of geographic range size. However, a central argument against range-size heritability has been that it is not compatible with the observed shape of present-day species range-size distributions (SRDs), a claim that has never been tested. To assess this claim, we used forward simulation of range-size evolution in clades with varying degrees of range-size heritability, and compared the output of three different models to the range-size distribution of the South American avifauna. Although there were differences among the models, a moderate-to-high degree of range-size heritability consistently leads to SRDs that were similar to empirical data. These results suggest that range-size heritability can generate realistic SRDs, and may play an important role in shaping observed patterns of range sizes.

AB - The concept of species-level heritability is widely contested. Because it is most likely to apply to emergent, species-level traits, one of the central discussions has focused on the potential heritability of geographic range size. However, a central argument against range-size heritability has been that it is not compatible with the observed shape of present-day species range-size distributions (SRDs), a claim that has never been tested. To assess this claim, we used forward simulation of range-size evolution in clades with varying degrees of range-size heritability, and compared the output of three different models to the range-size distribution of the South American avifauna. Although there were differences among the models, a moderate-to-high degree of range-size heritability consistently leads to SRDs that were similar to empirical data. These results suggest that range-size heritability can generate realistic SRDs, and may play an important role in shaping observed patterns of range sizes.

U2 - 10.1111/j.1558-5646.2012.01581.x

DO - 10.1111/j.1558-5646.2012.01581.x

M3 - Journal article

C2 - 22759297

SN - 0014-3820

VL - 66

SP - 2216

EP - 2226

JO - Evolution

JF - Evolution

IS - 7

ER -