Grant history of an LTER site
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 »
This is the fourth stage of the Arctic LTER (ARC) located at the Toolik Lake Field Station, Alaska, where the ecology of tundra, streams, and lakes is studied to understand controls on ecosystem structure and function within the long-term goal of predicting the effects of environmental change. Research has been ongoing at the station since… Read more »
This award supports the fifth phase of the Long Term Ecological Research Site (ARC LTER) at Toolik Lake, AK. The arctic region has warmed significantly over the past 30 years and arctic lands and freshwaters are already changing in response. The changes include a general “greening” of the arctic landscape, changes in species distributions and… Read more »
The Arctic is one of the fastest warming regions on Earth and as such may well provide an idea of the future changes likely to occur further south. This warming has increased disturbances such as wildfire as well as thawing of permafrost in ecosystems of Northern Alaska. As a result of this warming and increased… Read more »
The Arctic is one of the fastest warming regions on Earth and as such may well provide an idea of the future changes likely to occur further south. This warming has increased disturbances such as wildfire as well as thawing of permafrost in ecosystems of Northern Alaska. As a result of this warming and increased… Read more »
The Arctic is warming more rapidly than the rest of the planet. Thawing of previously frozen soils will have consequences for society through alteration of carbon emissions. Most previous research has focused on how Arctic ecosystems respond to average warming trends. There is however very little research on variability of environmental conditions within that average… Read more »
This project will establish a new Long Term Ecological Research (LTER) site along the Alaskan Arctic coastline. Research based out of Utqiagvik (formerly Barrow), Deadhorse, and Kaktovik will address how changes in shoreline erosion and freshwater inflows to the coastal ocean over seasonal, annual, and longer timeframes influence near-shore food webs. Research will be conducted… Read more »
This project continues the Beaufort Lagoon Ecosystems Long Term Ecological Research (BLE LTER) program. The BLE LTER was added to NSF’s network of LTER sites in 2017 and current work represents the second phase of this long-term effort. The project focuses on interactions between physical, chemical, and biological properties of nearshore ecosystems along Alaska’s northern-most… Read more »
For about 20 years, researchers with the Baltimore Long-Term Environmental Research (LTER) project have studied ecology within the city of Baltimore. When it started, the Baltimore LTER project was highly unusual because most ecologists were working in more natural environments. This was one of the very first urban ecology sites. A long-term approach was needed… Read more »
The Baltimore Ecosystem Study (BES) was initiated as an LTER project in 1997, designed to understand the controls on urban system structure and function, and how structure and function of the urban ecosystem affect one another. The proposed research will expand the first phase BES work by addressing three fundamental questions: 1) How do the… Read more »
