Displaying items by tag: sampling plot
Fire, fog, floods: Scientists probe climate-change impacts in Smokies
Many climate-change related issues have appeared since publication of this vintage map of Great Smoky Mountains National Park. Library of Congress
Invasive insects are among the vanguard of noticeable climate changes in America’s most-visited national park
GATLINBURG — Ants scurry beneath the carpet of last year’s leaves in Great Smoky Mountains National Park. The native ants are busy spreading the seeds of violets and bloodroot, preparing a new carpet of spring wildflowers to draw thousands of visitors.
But the local insects aren’t alone under there. They have become prey to venomous Asian needle ants that also prowl the leaf litter.
These invaders dine on termites, other ants and insects, while stealing habitat from them. Unlike invasive fire ants, needle ants can live in pristine forests and build large colonies with hundreds of queens. But like fire ants, needle ants have a painful sting that can trigger an allergic reaction.
Climate change is expected to make it easier for invasive species like needle ants to upset the delicate balance of this temperate rainforest full of rare plants and animals. That’s just one example.
- great smoky mountains
- climate change appalachia
- southern appalachian climate change
- great smoky mountains national park climate change
- needle ant
- are ants affected by climate change
- daniel malagon
- ana barro
- jason fridley
- paul super
- ipcc
- climate precipitation change
- smokies science
- national ecological observatory network
- neon
- armadillo
- invasive species
- change in precipitation
- importance of cloud to water balance highelevation ecosystem
- biodiversity
- climate change research
- sampling plot
Marking points in time: The Hal DeSelm Papers

A life dedicated to the flora of Tennessee
Dr. Hal DeSelm clambered around the crest of Cherokee Bluff in the heat of a late Knoxville summer 22 years ago. The Tennessee River flowed languidly some 500 feet below. Beyond the river stood the campus of the University of Tennessee Agriculture Institute. The towers of the city center rose to the northeast beyond the bridges of the old frontier river town.
DeSelm was not interested in the views of the urban landscape below. He was interested in the native trees, shrubs, herbs and grasses that clung to the ancient cliffside with firm but ultimately ephemeral grips on the craggy soil.
The retired UT professor, a renowned ecologist and botanist who died in 2011, had been sampling the terrestrial flora of Tennessee for decades. The life-long project took on a new urgency in the early 1990s, when he accelerated his data collection in hopes of writing the authoritative guide to the natural vegetation native to the forests, barrens, bogs and prairies of pre-European Tennessee.
Between 1993 and 2002, DeSelm collected 4,184 data points from 3,657 plots across the state. Many of those plots have since been lost to development, highways, and agriculture, or overrun by exotic species, but he assembled an invaluable baseline of the native landscape. Many of the sites he recorded have since been lost to development.
- science
- botany
- botanist
- Tennessee River
- native plant
- native tree
- native herb
- native grass
- native shrub
- Tennessee
- University of Tennessee
- terrestrial flora
- barren
- cedar barren
- ecologist
- Hal DeSelm
- Cherokee Bluff
- University of Tennessee Agricultural Institute
- native landscape
- preEuropean Tennessee
- natural vegetation
- sampling plot
- 1993
- 2002
- exotic species
- invasive species
- Todd Crabtree
- Tennessee State Botanist
- Natural Heritage Program
- conservation
- understory
- canopy
- ground cover
- herbaceous growth
- geology
- bedrock
- soil type
- forest
- conservationist
- database
- collection
- baseline data