7,660 results
Unoccupied Aerial System-mounted image velocimetry and Doppler velocity radar data for computation of river velocity and discharge collected at seven locations in Colorado in 2023 (ver. 2.0, February 2026)
A series of field measurements of surface water velocity derived from video and Doppler velocity radar collected by small unoccupied aircraft systems (sUAS) and portable sensors were collected at seven locations in Colorado, USA, during the summer of 2023. The measurements were utilized to compute s
Late Paleozoic and Early Mesozoic Structural History of the Uncompahgre Front- 19600101
This is an examination the late Paleozoic and Early Mesozoic structural history of the Uncompahgre front and the Paradox Basin.
Water Vapor Isotopic Composition During SAIL
Measurements of the stable isotopic composition of water vapor were collected between 21 November 2022 and 1 June 2023 at the SAIL campaign main site in Gothic Colorado. The data were obtained using a Los Gatos Research Triple Water Vapor Isotopic Analyzer from a heated and insulated inlet mounted o
VISSS Raw data from SAIL at Gothic from November 2022 to June 2023
A Video in situ Snowfall Sensor (VISSS) records shadow images of precipitating hydrometeors from two perspective at a 90 degree angle with a frequency of 140 Hz. From this, hydrometeor properties such as particle size, shape, complexity, degree of riming, and fall velocity can be derived. The VISSS
Nectar addition changes pollinator behavior but not plant reproduction in pollen rewarding <i> Lupinus argenteus</i>
The addition of nectar to pollen-rewarding plants resulted in modest increases in per-flower pollinator visit duration and pollen transfer, but had no effect on reproduction because, at the place and time the experiment was conducted, plants were not pollen-limited. These results suggest that a poll
DynaMETE: a hybrid MaxEnt-plus-mechanism theory of dynamic macroecology
John Harte,1,2,3* The Maximum Entropy Theory of Ecology (METE) predicts the shapes of macroecological met- Kaito Umemura4 and rics in relatively static ecosystems, across spatial scales, taxonomic categories and habitats, using Micah Brush5 constraints imposed by static state variables. In disturbed
Chronic, low-level nitrogen deposition enhances abundances of ant-protected herbivores inhabiting an imperiled foundation species
Abstract Atmospheric nitrogen (N) deposition is driving changes in plant assemblages worldwide, but animal responses are not well understood, especially in relation to current widespread rates of low-level N deposition. Big sagebrush (Artemisia tridentata) is a foundation species in steppe ecosystem
Experimental Test of the Combined Effects of Water Availability and Flowering Time on Pollinator Visitation and Seed Set
Climate change is likely to alter both flowering phenology and water availability for plants. Either of these changes alone can affect pollinator visitation and plant reproductive success. The relative impacts of phenology and water, and whether they interact in their impacts on plant reproductive s
Understanding Organismal Capacity to Respond to Anthropogenic Change: Barriers and Solutions
Global environmental changes induced by human activities are forcing organisms to respond at an unprecedented pace. At present we have only a limited understanding of why some species possess the capacity to respond to these changes while others do not. We introduce the concept of multidimensional p
Shifting macroecological patterns and static theory failure in a stressed alpine plant community
Abstract Accumulating evidence suggests that ecological communities undergoing change in response to either anthropogenic or natural disturbances exhibit macroecological patterns that differ from those observed in similar types of communities in relatively undisturbed sites. In contrast to such cros
Challenging problems of quality assurance and quality control (QA/QC) of meteorological time series data
Representativeness and quality of collected meteorological data impact accuracy and precision of climate, hydrological, and biogeochemical analyses and predictions. We developed a comprehensive Quality Assurance (QA) and Quality Control (QC) statistical framework, consisting of three major phases: P
Lagged and dormant season climate better predict plant vital rates than climate during the growing season
AbstractUnderstanding the effects of climate on the vital rates (e.g., survival, development, reproduction) and dynamics of natural populations is a long‐standing quest in ecology, with ever‐increasing relevance in the face of climate change. However, linking climate drivers to demographic processes
Producer-scrounger relationships in yellow-bellied marmots
Plant–pollinator interaction niche broadens in response to severe drought perturbations
The composition of plant–pollinator interactions—i.e., who interacts with whom in diverse communities—is highly dynamic, and we have a very limited understanding of how interaction identities change in response to perturbations in nature. One prediction from niche and diet theory is that resource ni
From Insects to Frogs, Egg–Juvenile Recruitment Can Have Persistent Effects on Population Sizes
Understanding what regulates population sizes of organisms with complex life cycles is challenging because limits on population sizes can occur at any stage or transition. We extend a conceptual framework to explore whether numbers of successfully laid eggs determine densities of later stages in ins
Do microorganisms obey macroecological rules?
Understanding the factors controlling the relative abundance, distribution, and diversity of organisms is a fundamental challenge in ecology. For plants and animals, macroecological rules have been developed that describe these large-scale distributional patterns and attempt to explain the underlyin
Interim Shareholder Reports
Union Pacific, Temco, Exxon-Mobile.
Interaction of Water Supply Planning and Environmental Protection
Daniel F. Luecke. Environmental Defense Fund.
Insanity
Frank S. Hoag and Robert H. Rawlings. The Pueblo Chieftain. January 2.
Incineration and Incinerators-in-Disguise
Community Support (/contact) ▼ Get Involved (/Get_Involved) ▼ Issues (/issues) ▼ Incineration and Incinerators-in-Disguise See our Trash Incineration Factsheet Zero Waste is the Solution (http://www.energyjustice.net/files/incineration/trashincineration.pdf) and our Powerpoint presentation on incine
