Introduction : influences of human population on biological diversity -- Projecting a gridded population of the world using ratio methods of trend extrapolation -- The human habitat -- Behavioral mediators of the human population effect on global biodiversity losses -- The biological diversity that is humanly possible : three models relevant to human population's relationship with native species -- Biodiversity on the urban landscape -- Indicators for assessing threats to freshwater biodiversity from humans and human-shaped landscapes -- A cross-cultural analysis of human impacts on the rainforest environment in Ecuador -- Human demography and conservation in the Apache Highlands ecoregion, US-Mexico borderlands -- Long-term ecological effects of demographic and socioeconomic factors in Wolong Nature Reserve (China) -- Exploring the association between people and deforestation in Madagascar -- A coupled natural and human systems approach toward biodiversity : reflections from social scientists