Urbanization alters interactions between Darwin’s finches and Tribulus cistoides on the Galápagos Islands

Ruth Rivkin, Reagan Johnson, Jaime Chaves & Marc Johnson
Emerging evidence suggests that humans shape the ecology and evolution of species interactions. Islands are particularly susceptible to anthropogenic disturbance due to the fragility of their ecosystems; however, we know little about the susceptibility of species interactions to urbanization on islands. To address this gap, we studied how the earliest stages of urban development affect interactions between Darwin’s finches and its key food resource, Tribulus cistoides, in three towns on the Galápagos Islands. We measured...
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