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Keyword: grassland

In the pipeline: A new report on the effects of oil and gas development on the biggest national grassland in the United States

Pages Posted on: September 05, 2019
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Getting climate-smart with seeds: How a new software tool helps prepare landscapes for expected future conditions

Pages Posted on: August 06, 2019
Sagebrush ecosystems are a major component of western U.S. landscapes and they provide vital habitat to a wide array of wildlife species, including greater sage-grouse and pygmy rabbits. However, in recent decades, sagebrush ecosystems have been reduced or degraded by a wide range of disturbances, including human development, overgrazing, severe fires, and encroachment by cheatgrass and pinyon-juniper woodlands. These factors are expected to continue or worsen with anticipated climate change.

100 years of vegetation change at the Sierra Ancha Experimental Forest

Projects Posted on: March 08, 2019
This project incorporates historical data collected at the Sierra Ancha Experimental Forest nearly 100 years ago to determine how plant communities have changed over that period of time.

Biological assessment of oil and gas development on the Little Missouri National Grassland

Publications Posted on: November 15, 2018
The Little Missouri National Grassland is the largest designated National Grassland in the United States and represents one of the best examples of intact native mixed-grass prairie in the United States. The Little Missouri National Grasslands occurs entirely within the Williston Basin, which has been a leading source of conventional oil and gas production since the 1950s.

Predicting the effects of climate change on cattle production in western U.S. rangelands

Science Spotlights Posted on: September 13, 2018
Forage availability for grazing animals has always been vulnerable to the effects of variations of weather and climate from year–to–year, with some years and decades markedly drier than others.

Recognizing loss of open forest ecosystems by tree densification and land use intensification in the Midwestern USA

Publications Posted on: April 12, 2018
Forests and grasslands have changed during the past 200 years in the eastern USA, and it is now possible to quantify loss and conversion of vegetation cover at regional scales. We quantified historical (ca. 1786-1908) and current land cover and determined long-term ecosystem change to either land use or closed forests in eight states of the Great Lakes and Midwest.

Steppe plant response to seasonal fire

Publications Posted on: May 12, 2016
Fire is a natural grassland disturbance that affects a variety of ecosystem factors including nutrient cycling, species diversity, and population and community dynamics. Caution is warranted when interpreting the effects of fire on grasslands due to the variety of fire types (e.g. wildfire vs prescribed burn), season of occurrence, weather conditions, grassland uses (e.g. grazing), fire history, and fuel conditions in which a burn can occur.

Characteristics of burns conducted under modified prescriptions to mitigate limited fuels in a semi-arid grassland

Publications Posted on: October 05, 2015
In semi-arid grasslands of the North American Great Plains, fire has traditionally been viewed as having few management applications, and quantitative measurements of fire behavior in the low fuel loads characteristic of this region are lacking. More recently, land managers have recognized potential applications of prescribed fire to control undesirable plant species and to manage habitat for wildlife in this region.

Weak vs. strong invaders of natural plant communities: Assessing invasibility and impact

Publications Posted on: April 21, 2015
In response to the profound threat of exotic species to natural systems, much attention has been focused on the biotic resistance hypothesis, which predicts that diverse communities should better resist invasions. While studies of natural communities generally refute this hypothesis, reporting positive relationships between native species diversity and invasibility, some local-scale studies have instead obtained negative relationships.

GSD Update: Checking the range for signs of climate change in the past, present and future

Publications Posted on: October 03, 2011
The July 2011 inaugural issue of GSDUpdate: Checking the Range for Signs of Climate Change In the Past, Present and Future, a research review of the Program, focuses on the efforts toward understanding the role of climate in shaping the environment.