Faculty Publications - Natural Resource Ecology Laboratory (NREL)
Recent Submissions
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Assessment of imperiled habitat in Colorado, An
Wildlife habitat is threatened by rapid conversion of agricultural to residential land use throughout the Rocky Mountain West. As a result of these changes, citizens, planners and decision makers need to identify areas of ... -
Effects of population growth on wildlife habitat in Colorado: a briefing paper for the Colorado Division of Wildlife commissioners, June 1998
Wildlife and people need habitat in Colorado. Wildlife need forest and range and wetlands. People need places to live, places to work, roads to travel on, and schools to educate their children. Meeting the "habitat" needs ... -
Mapping native and non-native riparian vegetation in the Colorado River Watershed
Using remote sensing to map riparian vegetation, particularly single species such as tamarisk and Russian olive, requires georeferenced occurrence locations with estimations of foliar cover to train remote sensing-based ... -
Relationships between groundwater use, water table, and recovery of willow on Yellowstone's northern range
Excessive levels of herbivory, incision of stream channels, and climate warming are believed to be responsible for the decline of woody deciduous plants in riparian zones in western North America, declines that are likely ... -
Hydrologic regime and herbivory stabilize an alternative state in Yellowstone National Park
A decline in the stature and abundance of willows during the 20th century occurred throughout the northern range of Yellowstone National Park, where riparian woody-plant communities are key components in multiple-trophic-level ... -
Water tables constrain height recovery of willow on Yellowstone's northern range
Excessive levels of herbivory may disturb ecosystems in ways that persist even when herbivory is moderated. These persistent changes may complicate efforts to restore ecosystems affected by herbivores. Willow (Salix spp.) ... -
Local knowledge production, transmission, and the importance of village leaders in a network of Tibetan pastoralists coping with environmental change
Changing climate, social institutions, and natural resource management policies are reshaping the dynamics of social-ecological systems globally, with subsistence-based communities likely to be among the most vulnerable ... -
Analytical determination of concentric carbon gradients within stable soil aggregates = Détermination analytique de gradients concentriques de carbone au sein d’agrégats stables de sol
Soil aggregation dynamics directly control agricultural production and reduce environmental contamination by convection-dispersion sequestrations of most ions. Greater containment and longer residence times of most plant ... -
Biological and molecular structure analyses of the controls on soil organic matter dynamics
The dynamics of soil organic carbon (SOC) are controlled by the interaction of biological, physical, and chemical parameters. These are best measured by a combination of techniques such as long-term field sites with a C3↔C4 ... -
Analytical determination of soil C dynamics = Détermination analytique de la dynamique du carbone du sol
The significance and possible management of soil organic C (SOC) in ecosystem functioning, global change and sustainable agriculture is best determined through a knowledge of its dynamics. This requires analytically ... -
Agriculture's role in greenhouse gas mitigation
This report describes opportunities for U.S. agriculture to contribute to reducing net greenhouse gas emissions. The Pew Center on Global Climate Change was established by the Pew Charitable Trusts to bring a new cooperative ... -
Extraction and measurement of adenosine triphosphate from marine sediment, The
A technique has been developed, using boiling sodium bicarbonate buffer, to extract adenosine triphosphate (ATP) from marine sediments and has been tested on a variety of sediments, including those with high organic content, ... -
Continuous flow isotope ratio mass spectrometry of carbon dioxide trapped as strontium carbonate
The isotopic signal provided by differential discrimination against atmospheric carbon dioxide (13CO2) by C3 and C4 plant photosynthetic pathways is being widely used to study the processes of carbon (C) fixation, soil ... -
Automated analysis of 15N and 14C in biological samples
An automated method for the simultaneous analysis of total N, total C, 15N and 14C in small plant and soil samples is described. A commercial C-N analyser - continuous flow isotope ratio mass spectrometer (ANCA-MS) has ... -
Carbon flow in plant microbial associations
Measurement of the distribution of the photosynthesis product in the symbiotic association of a legume, a mycorrhizal fungus, and nitrogen-fixing bacteria showed that the fungus incorporated 1 percent of the photosynthesis ... -
Greenhouse gases in intensive agriculture: contributions of individual gases to the radiative forcing of the atmosphere
Agriculture plays a major role in the global fluxes of the greenhouse gases carbon dioxide, nitrous oxide, and methane. From 1991 to 1999, we measured gas fluxes and other sources of global warming potential (GWP) in cropped ... -
Carbon dynamics and estimates of primary production by harvest, 14C dilution, and 14C turnover
Large plots of native shortgrass steppe were labeled with 14C to assess short-term patterns of carbon allocation and the long-term process of herbivory, death, and decomposition, and to compare estimates of net aboveground, ... -
Soil bacterial community composition altered by increased nutrient availability in Arctic tundra soils
The pool of soil organic carbon (SOC) in the Arctic is disproportionally large compared to those in other biomes. This large quantity of SOC accumulated over millennia due to slow rates of decomposition relative to net ... -
Comparisons between P-fertilized and mycorrhizal plants
In experimentation with vesicular-arbuscular mycorrhizal (VAM) fungi, the availability of non-VAM control plants of equal size to VAM plants is a fundamental requirement. The purpose of this work was to determine nutrient ...
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