Paleo Data

Paleo Data: Incorporating Time into Macrosystems Biology

PalEON aims to incorporate 2000 years of paleoecological data into terrestrial ecosystem models in order to improve how these models capture long-term dynamics such as forest succession and disturbance regimes.

To do this, PalEON focuses on three main types of paleoecological data:

1)  Settlement-era vegetation data from the United States Public Land Survey
PalEON reconstructs forest composition and structure from the settlement-era to provide a historic forest baseline based on data for model initialization.  To do this, we are using historical data derived from the Public Land Survey (PLS) and township proprietor surveys from the 1700’s and 1800’s to generate gridded datasets of composition, stem density, and biomass for the PalEON domain.

Original PLS notebooks are transcribed to produce reconstructions of settlement-era forest composition and structure. Here, stem density is reconstructed for Wisconsin and Minnesota.

2)  Pollen, charcoal, and paleoclimate proxy data from lake sediment cores
PalEON makes use of an existing network of paleoecological data to reconstruct forest composition, disturbance regimes, and climate over the past 2000 years for the PalEON domain.

Left: Taking a lake sediment core. Right: Existing proxy data within the PalEON domain (heavy lines). Black points mark existing charcoal data, dotted circles mark paleoclimate proxies, and white triangles mark pollen data. NEON domains are indicated by colored polygons.

3) Tree rings  
PalEON uses tree rings to provide paleoecological data over the past 500 years on forest growth and disturbance regimes.

Graduate student Sam Pecoraro takes and analyzes a tree core to assess annual woody growth

Neotoma database project provides access to available pollen and paleoclimate proxy data

Recent Posts

PalEON at AGU 2016

If you are going to AGU this year make sure to stop by and check out what PalEON has been working on!

AGU 2016 PalEON schedule color coded by day with lighter colors being posters, darker colors talks

AGU 2016 PalEON schedule color coded by day with lighter colors being posters, darker colors talks

  1. Expert Elicitation to Interpret Pollen Data Leave a reply
  2. Synthesizing Fire-History Records to Understand Fire-Regime Variability Across Alaska 1 Reply
  3. Science at Notre Dame Leave a reply
  4. Empirically Reconstructing Biophysics with Remote Sensing Data Leave a reply
  5. 2015 AGU PalEON Talks & Poster Schedule Leave a reply
  6. Reconstructing Multivariate Climate Using A Mechanistic Tree Ring Model Leave a reply
  7. PalEON at ESA and JSM 2015 Leave a reply
  8. Models Part 3: Using Ecosystem Models to Advance Ecology Leave a reply
  9. A Living Forest Leave a reply
  10. Huron Mountain Wildlife Leave a reply
  11. Models Part 2: A Day in the Life of an Ecological Modeler Leave a reply
  12. Models Part 1: The PalEON Model Inter-Comparison Project Comes to Life Leave a reply
  13. Edge of the Prairie Leave a reply
  14. Pollen Dispersal II: Quantitative Reconstructions Leave a reply
  15. 2014 AGU PalEON Talks & Poster Schedule Leave a reply
  16. In a New Light 1 Reply
  17. Pollen Dispersal I: Why We Get Sediment Pollen Leave a reply
  18. Underwater In New England Leave a reply
  19. The Magic of Science is its Complexity 1 Reply
  20. Big process, small data: Reconstructing climate from historical U.S. fort data Leave a reply
  21. Quaternary Science . . . on Mars . . . three billion years ago. Leave a reply
  22. Camp PEON Day 6: LAST DAY Leave a reply
  23. Camp PEON Days 4 & 5: DATA ASSIMILATION! Leave a reply
  25. Day 2 of Camp PEON: TREE RINGS Leave a reply
  26. Day 1 of Camp PEON: WORKING ON THE FROZEN FINGER! Leave a reply
  27. Maine Fieldwork Part 2: The Bog Leave a reply
  28. PalEON Sessions at AGU, December 15-19, 2014 Leave a reply
  29. You Are Suffering For the Greater Good of Science Leave a reply
  30. Sneak Peek at Results for Tree Composition Pre-Euro-American Settlement (ca. 1700-1850 AD) Leave a reply
  31. PalEON on TV Leave a reply
  32. Self thin you must Leave a reply
  33. Forests in a Changing Climate Leave a reply
  34. Macrosystems Ecology: The More We Know The Less We Know. Leave a reply
  35. PEONs at AGU Leave a reply
  36. The Invasion of the Zombie Maples Leave a reply
  37. PalEON Goes Into the Field Leave a reply
  38. The Prairie Peninsula Leave a reply
  39. Update: Down-scaled Meteorological Drivers Leave a reply