Grant history of an LTER site
This project represents the renewal of the Cedar Creek Natural History Area Long-Term Ecological Research project. Long-term observation and experimentation will be used to examine the controls of successional dynamics and spatial patterning in ecosystems at the prairie-forest boundary. The investigators will build on the detailed data record already accumulated in a series of permanent… Read more »
9411972 Tilman The Cedar Creek Natural History Area is important because of its location on the climatically and edaphically controlled boundary between prairie and forest. This “tension zone” between forest and prairies is highly sensitive to climatic variation and strongly impacted by edaphic factors, especially soil nitrogen availability fire frequency and by herbivores and predators…. Read more »
Andrews LTER 1 and 2 programs consisted of long-term field experiments and observation programs on disturbance regimes, vegetation succession, trophic interactions, forest/stream interactions, and controls on primary production, decomposition, and nutrient cycling. These studies will be continued in LTER 3 (1991-1996). In addition, synthesis efforts, initiated in LTER 1 and 2, will be expanded greatly…. Read more »
Swanson 9632921 The central question guiding the HJ Andrews LTER is: How do land use, natural disturbances and climate change affect three key ecosystem properties: carbon dynamics, biodiversity, and hydrology? These three ecosystem properties are of high scientific and social interest and represent three rather different categories of ecological response to landscape patterns. The principle… Read more »
Harmon 0218088 The Andrews LTER program seeks to understand the long-term dynamics of forest and river ecosystems of the Pacific Northwest. The Central Question guiding Andrews LTER research is: How do land use, natural disturbances, and climate change affect three key sets of ecosystem services: carbon and nutrient dynamics, biodiversity, and hydrology? These ecosystem services… Read more »
The Andrews Forest is located in the western Cascade Mountains of Oregon, one of six original Long-Term Ecological Research projects that began in 1980. It was built on a long research history by the Forest Service and has a record of ground-breaking science and application to forest management and conservation. The terrain is mountainous and… Read more »
Climate change forecasts for the Pacific Northwest portend drought, decreased snow packs, and increased wildfire. Predictions for how Pacific Northwest ecosystems will respond to climate change face both scientific and social challenges. First, observed rates of climate change in this region vary in both space and time. Second, forest governance systems face conflicting pressures to… Read more »
The Pacific Northwest is experiencing increased drought and wildfire, and decreased snow packs. There is much uncertainty about how its ecosystems of forests, streams, and mountain meadows will respond. Ecologically, these habitats are experiencing environmental changes in very different ways. Socially, public values associated with these areas vary greatly and can be in conflict with… Read more »
During the first five years of the Arctic LTER at Toolik Lake, Alaska, systematic measurements of climate, of tundra plant distribution and productivity, and of lake and stream physics, chemistry and biology were begun. Whole system experiments were set up on the tundra, in streams, and in lakes to examine the ecological effects of changes… Read more »
9810222 Hobbie The Arctic LTER site is located in the northern foothills of the Brooks Range, Alaska, in tundra vegetation of sedges and grasses mixed with dwarf birch and low willows. The tundra, streams and lakes at the site have been undisturbed and unchanged for more than 5,000 years. This allows the analysis of relationships… Read more »
