In 1993, we installed 40 circular, 10 m radius biometric plots in the footprint of the EMS tower on Prospect Hill. We randomly placed the plots within 100 m increments along ten 500 m transects that extend from the tower in the northwest and southwest directions. In 2001, we removed three plots (G3,

No description provided.

The purpose of this study was to track year-to-year variation in aphid abundance on the host plant Ligusticum porteri (Apiaceae). We censused arthropod abundance on the flowering stalks of L. porteri weekly in June-August from 2017 to 2020. The censuses took place in ten L. porteri populations near

This release includes Python codes and associated field sampling and remote sensing data for the estimation of the spatial distribution of soil thickness in two hillslopes in the Pump House area in the East River Watershed in the CO., the U.S.

Riparian zones are widely recognized as important sources of high species diversity. High levels of food resources and habitat complexity in riparian zones attract large numbers of avian species, particularly in arid regions. However, less is known about the importance of riparian proximity in wet m

According to trade-off theory, animals weigh the benefits of obtaining resources against the risks of being preyed upon during these activities. One major factor that can influence an animal’s risk assessment is its current body condition, for example animals that are of lower body condition may be

The diatom Didymosphenia geminata has become an increasing concern for aquatic habitats. The algae has spread within its native environment and exhibit invasive characteristics, as well as invade ecosystems outside of its native range. D. geminata does not appear to affect the species richness of an

The way in which plants respond evolutionarily to environmental change partially depends on the magnitude of variation present within populations. In an attempt to understand the evolutionary response of Androsace septentrionalis (Rock Jasime) to current and future climate change in the Elk mountain

A plants ability to resist high levels of herbivory may increase performance and fitness, then be favored by natural selection (Agrawal et al 1998, Karban 1993). The objectives of this study were to find if Chamerion angustifolium, Fireweed, develops an induced resistance to herbivory damage and if

The species-area relationship (SAR) is a widely used concept in ecology, yet there is much controversy over its form. It has traditionally been assumed either to have a simple universal power-law form, S = cAz, or to be idiosyncratic, varying from habitat to habitat, taxa to taxa, and spatial scale

In this study I tested if there is a correlation between bee size and size parameters of flowers the bees visit for pollen. In the plant community evaluated there are not many characteristics restricting the use of pollen by bees. Most of the plants analysed have open corollas and/or present pollen

Shifts in the timing of spring phenology are a central feature of global change research. Long-term observations of plant phenology have been used to track vegetation responses to climate variability but are often limited to particular species and locations and may not represent synoptic patterns. S

Excretion rate estimates are important for linking consumers to biogeochemical processes. Short-term incu- bations in chambers are a common approach for studies. This, however, may result in inaccuracies due to a well- documented decline in excretion with time, which is often attributed to fasting.

James Amos. The Pueblo Chieftain. November 5, 2000.

Pete Klingsmith, POWER, 2000

Bureau of Reclamation History Program. July, 2000.

Marlene Zanetell Board of County Commissioners February 23, 2000