River density and landscape roughness are universal determinants of linguistic diversity

Toward a Mechanistic Understanding of Linguistic Diversity

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Approaching a state shift in Earth’s biosphere

(2012) Anthony D. Barnosky et al.   NATURE

Human macroecology: linking pattern and process in big-picture human ecology

(2011) William R. Burnside et al.   BIOLOGICAL REVIEWS

Ancient watercourses and biogeography of the Sahara explain the peopling of the desert

(2010) N. A. Drake et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Demography and Language Competition

(2009) Anne Kandler   HUMAN BIOLOGY

Political complexity predicts the spread of ethnolinguistic groups

(2009) T. E. Currie et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA