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Keyword: El Nino Southern Oscillation

Historic fire regime forensics: Deciphering drivers and variability from tree rings

Science Spotlights Posted on: August 18, 2016
Proper management of naturally forested landscapes requires an understanding of the temporal and spatial patterns in which key disturbance processes are manifest and their effects on species composition and structure. Linked fire and forest histories constructed from tree-ring evidence provide valuable information about drivers of fire occurrence and about the variability and interactions of fire regimes and vegetation on heterogeneous landscapes.

Climate and human influences on historical fire regimes (AD 1400-1900) in the eastern Great Basin (USA)

Publications Posted on: January 12, 2016
High fire activity in western North America is associated with drought. Drought and fire prevail under negative El Niño Southern Oscillation (ENSO) and Pacific Decadal Oscillation (PDO) phases in the Southwest and with positive phases in the Northwest. Here, I infer climate effects on historic fire patterns in the geographically intermediate, eastern Great Basin and seek out evidence of human influence on reconstructed fire regimes.

Multi-century fire-regime forensics: the past as a guide for restoring landscape resilience

Projects Posted on: April 16, 2015
Multi-century fire and forest histories are reconstructed using dendrochronological techniques to assess past variation in fire regimes at various scales of time and space.

El Niño Southern Oscillation (ENSO) enhances carbon dioxide exchange rates in Everglades freshwater marsh ecosystems

Science Spotlights Posted on: April 14, 2015
Annual and seasonal changes in carbon sequestration potential are linked to extreme ENSO phases in Everglades ecosystems. Dry season precipitation increases during El Niño and declines in La Niña phases causing a shift in ecosystem carbon uptake with changes in water levels. Results suggest that changes in season length and intensity−as a result of climate change −will likely become one of the most important factors affecting carbon dynamics in the Everglades region.