instances Aspen Plus and Comos PT document models Aspen Plus and Comos PT integration associations Aspen Plus and Comos PT integration correspondences Aspen Plus and Comos PT integration rules concrete instances Aspen Plus and Comos PT documents instance of instance of instance of extends

We conducted an analysis of aspen (Populus tremuloides) overstory recruitment on the northern range of Yellowstone National Park (YNP) using information provided in a monograph published by Warren (Warren, E.R., 1926. A study of beaver in the Yaney region of Yellowstone National Park, Roosevelt-Wildl. Ann. 1, 1±191), increment cores collected from riparian aspen stands in 1998, and an extensive...

Aspen communities in the western U.S. are considered at risk because of low levels of disturbance and high levels of herbivory by wild and domestic ungulates. There appears to be a trend toward the loss of aspen-dominated stands West-wide. In some cases the loss is caused by succession, with shade-tolerant conifers becoming dominant. On dry sites where aspen is considered to be the climax, dete...

Dilute acid (DA) and Sulfite Pretreatment to Overcome Recalcitrance of Lignocelluloses (SPORL) pretreatments were directly applied to wood chips of four poplar wood samples of different genotypes (hereafter referred to as poplars; Populus tremuloides Michx. ‘native aspen collection’; Populus deltoides Bartr. ex Marsh Populus nigra L. ‘NE222’ and ‘DN5’; P. nigra Populus maximowiczii A. Henry ‘NM...

The main challenges to the commercial deployment of solvent-based post-combustion carbon capture technology include high energy consumption and capital operating costs. New solvents alternative process configurations are being pursued reduce costs process. This paper investigates technical economic performance using piperazine (PZ) solvent for a 250 MWe natural gas combined cycle power plant. T...

A spen (Populus tremuloides) provides important habitat for mammals and birds 1–3 , improves water retention in watersheds, 4 and has high aesthetic appeal in autumn. However, the amount and quality of aspen cover in the West has been declining for many years. For example, aspen cover in the Dixie and Fishlake National forests in Utah has decreased by more than 60% from historic levels, and in ...

In the light of increasing fears about climate change, greenhouse gas mitigation technologies have assumed growing importance. In the United States, energy related CO2 emissions accounted for 98% of the total emissions in 2007 with electricity generation accounting for 40% of the total. Carbon capture and sequestration (CCS) is one of the options that can enable the utilization of fossil fuels ...

Overview Quaking aspen is generally considered to be a fire-adapted species because it regenerates prolifically after fire, and it can be replaced by more shade-tolerant tree species in the absence of fire. As early-successional aspen stands transition to greater conifer-dominance, they become increasingly fire prone, until fire returns, and aspen again temporarily dominate. While this disturba...

research conducted at Utah State University that identified factors to improve the success of regenerating aspen in southern Utah. Evaluating past si lvicultural regeneration treatments indicated that the presence of pre-harvest advance reproduction, site preparation by broadcast burning, and decreasing browsing pressure could increase the quantity of aspen regeneration. The outcomes are genera...

Question: How does competition between quaking aspen (Populus tremuloides) and white fir (Abies concolor) affect growth and spatial pattern of each species? Location: The northern Sierra Nevada, California, USA. Methods: In paired plots in mixed aspen(n5 3) or white fir-dominated (n5 2) stands, we mapped trees and saplings and recorded DBH, height, species, and condition and took increment core...