Relating Late-Quaternary Plant and Animal Distributions to Past and Future Climate
Samantha Kaplan, University of Wisconsin-Stevens Point
A guided activity for students to explore the relationship between climate and plant and animal distributions in the past, present, and future. Students use the Neotoma Paleoecology Database, USDA Climate Change Tree Atlas, USGS Atlas of Relations Between Climatic Parameters and Distributions of Important Trees and Shrubs in North America (Professional Paper 1650 A/B), and climate model output.

Species distributions in response to environmental gradients in the Upper Midwest of the United States - an example using the Neotoma database
Alison Smith, Kent State University-Main Campus
Pollen and ostracode records are used here to examine the migration of a major ecotone (transition zone between two biomes) in the Northern Midwest known as the prairie-forest border. Using the Neotoma database, we can explore the modern geographic distribution of prairie and forest vegetation (represented by pollen data) and of saline and freshwater lakes (represented by ostracodes, microscopic aquatic crustaceans) and then track the shifting boundary of the prairie forest border over the most recent 12,000 years using a lake sediment core.

What are the ecological consequences of trophic downgrading in mixed/short grass prairies in North America?
Dennis Ruez, University of Illinois at Springfield
North American ecosystems have fundamentally changed over the late Pleistocene and Holocene; from a system dominated by mammoths, to bison, to domestic livestock. Given the very different body size and herd formation of these 'ecosystem engineers', it is likely that animals influence soil structure, water tables, vegetation and other animals in the ecosystems. What has been the ecological influence of the continued 'downsizing' of the largest animals in the ecosystem?

Advanced exploration of the ecological consequences of trophic downgrading in mixed/short grass prairies in North America
Dennis Ruez, University of Illinois at Springfield
North American ecosystems have fundamentally changed over the late Pleistocene and Holocene; from a system dominated by mammoths, to bison, to domestic livestock. Given the very different body size and herd formation of these 'ecosystem engineers', it is likely that animals influence soil structure, water tables, vegetation and other animals in the ecosystems. What has been the ecological influence of the continued 'downsizing' of the largest animals in the ecosystem?

California Climate and Vegetation Change Classroom Task
Katherine Glover, University of Maine
This NGSS-aligned classroom task focuses on California's Mediterranean climate, and shifts in its floral diversity during the Holocene that reflect past climate change. Students first examine modern climate data from four disparate areas in the state and create climatographs. Using the Neotoma Paleoecology Database, students then look at past records in each of these four regions to assess pollen data as a proxy for climate change over time, and completeness of the record. Plant taxa in the fossil record are compared to modern plant tolerances and distribution available at CalFlora, and students then determine which plants are most sensitive to change by region, and preserve well as fossil pollen.