ABSTRACT Quaternary (last 2.6 million years) botany involves studying plant megafossils
(eg tree stumps), macrofossils (eg seeds, leaves), and microfossils (eg pollen, spores) …

High-resolution proxy records from the circum-Caribbean region indicate significant
variation in Late Holocene climate, especially precipitation, attributed primarily to shifts in the …

Pre-Columbian farmers of the Neotropical lowlands numbered an estimated 25 million by
1492, with at least 80 percent living within forest biomes. It is now well established that …

Abstract Lakes occur throughout Costa Rica, in a variety of geomorphic settings. Nearly
every possible mode of lake formation has occurred, involving processes related to …

Archeological and paleoenvironmental records from southern Central America attribute
population collapse to the Spanish Conquest about 500 years ago. Paleoclimate records …

Garden hunting was originally proposed as an indigenous subsistence strategy associated
with pre-Hispanic tropical agroforestry in western Panama. At the time, it was offered as a …

New compound-specific isotope analyses of a sediment core from Laguna Los Mangos in
southern Pacific Costa Rica improves understanding of late-Holocene precipitation change …

Abstract In Central America and the Caribbean, periods of increased aridity that correspond
to the Terminal Classic Drought (TCD; 1200–850 cal yr BP) and the Little Ice Age (LIA; 500 …

A lake sediment profile spanning the last~ 3200 years from Laguna Zoncho in the southern
Pacific region of Costa Rica was analyzed for sub-fossil chironomids. Notable shifts in …

Pollen, charcoal, and bulk sediment stable carbon isotope analysis of a 2.4 m sediment core
from Laguna Yaguarú in eastern Bolivia, located near the modern ecotone between the …