Paleoclimate and paleoecology of the Late Quaternary Neotropics

• Paleoclimatic reconstructions of lowland Bolivia over the last 50,000 years (with B. Whitney and F. Mayle)
• Holocene climate history of Laguna Socorros, Chiquitano Dry Forest, central Bolivia (with F. Mayle)
• Late Pleistocene and Holocene paleoclimate of Brazil (with H. Behling)

Quantification of pollen morphology

• Improved imaging of pollen and the distinguishing of similar morphotypes
  Case study: Black and white spruce (with E. Grimm)
  Case study: Anadenanthera
• Development of new methods of morphometric analysis of fossil pollen (with E. Greenfest-Allen)

Pollen productivity and climatic change

• Changes in pollen production of two Panamanian forests in response to El Nino/La Nina variability (with J. E. Moreno)