Understanding paleolimnological dynamics in the Rio Negro floodplain provides a window into broader paleoclimatic variability and long-term environmental change across western Amazonia. Here, we analyzed diatom assemblages (relative abundance and valve density; valves g −1 ), grain size, bulk organic geochemistry (TOC and C/N), chlorophyll derivatives (SPDU), δ 13 C and δ 15 N in a 146 cm sediment core from Lago Airo, recoveri...

Aim Ongoing and future anthropogenic climate change poses one of the greatest threats to biodiversity, affecting species distributions and ecological interactions. In the Amazon, climatic changes are expected to induce warming, disrupt precipitation patterns and of particular concern, to increase the intensity and frequency of droughts. Yet the response of ecosystems to intense warm, dry events is not well understood. In the A...