Vegetation monitoring at Pueblo Chemical Depot: 1999-2015

Prepared for: U.S. Fish & Wildlife Service, Colorado Fish & Wildlife Conservation Office, Pueblo Chemical Depot.May 2016.Includes bibliographical references (pages 92-98).In 1998 the U. S. Fish and Wildlife Service (USFWS) contracted the Colorado Natural Heritage Program to set up a long‐term vegetation monitoring program on U.S. Army Pueblo Chemical Depot (PCD) in Pueblo County, Colorado. PCD makes up the southern portion of an important landscape conservation area – Chico Basin – and monitoring data collected here can be useful to PCD land managers as well as regional land managers. The PCD monitoring program was established to detect vegetation changes in shortgrass prairie, sandsage shrubland, and greasewood shrubland as a result of the removal of cattle grazing in 1998. Each vegetation type included areas with four different historic cattle grazing regimes: 1) grazed year‐round until 1998, 2) grazed, but not year‐round, until 1998, 3) grazed lightly (several times/year) since 1942, and 4) ungrazed since 1942. For the purpose of this study the first two regimes are considered "grazed" and the latter two regimes "ungrazed." All further reference to the "grazed" regime refers to its historical use prior to 1998. During the 1999‐2015 years of monitoring neither grazed nor ungrazed study plots discussed in this report received any livestock grazing

Noxious weed survey of Francis E. Warren Air Force Base, 2018

Prepared for: Francis E. Warren Air Force Base.April 2019.Includes bibliographical references

Survey of critical biological resources, Larimer County, Colorado, 2004

Prepared for: Larimer County Parks and Open Lands, City of Fort Collins Natural Areas Program, City of Loveland Natural Areas Program, Larimer County Planning Department.Includes bibliographical references

Visiting insect diversity and visitation rates for two globally-imperiled plant species in Colorado's Mosquito Range

Prepared for: Native Plant Conservation Alliance, National Fish and Wildlife Foundation.May 2001.Includes bibliographical references

Survey and assessment of critical urban wetlands: City of Aurora

Report prepared for: City of Aurora, U.S. Envronmental Protection Agency, Region 8.December 2020.Includes bibliographical references

Survey of critical biological resources, El Paso County, Colorado

Prepared for: El Paso County Parks and Leisure Services.December 2001.Includes bibliographical references

First simultaneous SST/CRISP and IRIS observations of a small-scale quiet Sun vortex

Context. Ubiquitous small-scale vortices have recently been found in the lower atmosphere of the quiet Sun in state-of-the-art solar observations and in numerical simulations. Aims. We investigate the characteristics and temporal evolution of a granular-scale vortex and its associated upflows through the photosphere and chromosphere of a quiet Sun internetwork region. Methods. We analyzed high spatial and temporal resolution ground- and spaced-based observations of a quiet Sun region. The observations consist of high-cadence time series of wideband and narrowband images of both Hα 6563 Å and Ca II 8542 Å lines obtained with the CRisp Imaging SpectroPolarimeter (CRISP) instrument at the Swedish 1-m Solar Telescope (SST), as well as ultraviolet imaging and spectral data simultaneously obtained by the Interface Region Imaging Spectrograph (IRIS). Results. A small-scale vortex is observed for the first time simultaneously in Hα, Ca II 8542 Å, and Mg II k lines. During the evolution of the vortex, Hα narrowband images at −0.77 Å and Ca II 8542 Å narrowband images at −0.5 Å, and their corresponding Doppler signal maps, clearly show consecutive high-speed upflow events in the vortex region. These high-speed upflows with a size of 0.5–1 Mm appear in the shape of spiral arms and exhibit two distinctive apparent motions in the plane of sky for a few minutes: (1) a swirling motion with an average speed of 13 km s-1 and (2) an expanding motion at a rate of 4–6 km s-1. Furthermore, the spectral analysis of Mg II k and Mg II subordinate lines in the vortex region indicates an upward velocity of up to ~8 km s-1 along with a higher temperature compared to the nearby quiet Sun chromosphere. Conclusions. The consecutive small-scale vortex events can heat the upper chromosphere by driving continuous high-speed upflows through the lower atmosphere

Aquilegia, Vol. 26 No. 1, January-February 2002: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1091/thumbnail.jp

Guide to the ecological systems of Colorado

Includes bibliographical references

Aquilegia, Vol. 25 No. 1-2, January-February 2001: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1183/thumbnail.jp