@article {315390,
	title = {Productivity, biodiversity, and pathogens influence the global hunter-gatherer population density},
	journal = {PNAS},
	year = {2017},
	month = {2017/12/27},
	abstract = {<p><span style="color: rgb(51, 51, 51); font-family: Arial, sans-serif; font-size: 14px; text-align: justify;">The environmental drivers of species distributions and abundances are at the core of ecological research. However, the effects of these drivers on human abundance are not well-known. Here, we report how net primary productivity, biodiversity, and pathogen stress affect human population density using global ethnographic hunter-gatherer data. Our results show that productivity has significant effects on population density globally. The most important direct drivers, however, depend on environmental conditions: biodiversity influences population density exclusively in low-productivity regions, whereas pathogen stress does so in high-productivity regions. Our results also indicate that subtropical and temperate forest biomes provide the highest carrying capacity for hunter-gatherer populations. These findings document that environmental factors play a key role in shaping global population density patterns of preagricultural humans.</span></p>
},
	doi = {10.1073/pnas.1715638115},
	url = {http://www.pnas.org/content/early/2017/12/26/1715638115.full},
	author = {Tallavaara, Miikka and Eronen, Jussi T. and Luoto, Miska}
}
