Effects of urban development on stream ecosystems alongthe Front Range of the Rocky Mountains, Colorado and Wyoming

Fact Sheet ◽  
2006 ◽  
Author(s):  
Lori A. Sprague ◽  
Robert E. Zuellig ◽  
Jean A. Dupree
Keyword(s):  
Urban Development ◽  
Rocky Mountains ◽  
Stream Ecosystems ◽  
Front Range

scholarly journals Urban development results in stressors that degrade stream ecosystems

Fact Sheet ◽  
2012 ◽  
Author(s):  
Amanda H. Bell ◽  
James F. Coles ◽  
Gerard McMahon ◽  
Michael D. Woodside
Keyword(s):  
Urban Development ◽  
Stream Ecosystems

Structure, production and resource use in some old-growth spruce/fir forests in the Front Range of the Rocky Mountains, USA

2003 ◽  
Vol 172 (2-3) ◽  
pp. 271-279 ◽  
Author(s):  
Dan Binkley ◽  
Ute Olsson ◽  
Richard Rochelle ◽  
Tom Stohlgren ◽  
Ned Nikolov
Keyword(s):  
Resource Use ◽  
Rocky Mountains ◽  
Front Range ◽  
Old Growth

scholarly journals New particle formation in the front range of the Colorado Rocky Mountains

2007 ◽  
Vol 7 (6) ◽  
pp. 15581-15617 ◽  
Author(s):  
M. Boy ◽  
T. Karl ◽  
A. Turnipseed ◽  
R. L. Mauldin ◽  
E. Kosciuch ◽  
...  
Keyword(s):  
Rocky Mountains ◽  
Cloud Condensation Nuclei ◽  
Measurement Data ◽  
Particle Growth ◽  
Particle Formation ◽  
Conclusive Evidence ◽  
Front Range ◽  
New Particle Formation ◽  
Particle Measurement ◽  
Colorado Rocky Mountains

Abstract. New particle formation is of interest because of its influence on the properties of aerosol population, and due to the possible contribution of newly formed particles to cloud condensation nuclei. Currently no conclusive evidence exists as to the mechanism or mechanisms of nucleation and subsequent particle growth. However, nucleation rates exhibit a clear dependence on ambient sulphuric acid concentrations and particle growth is often attributed to the condensation of organic vapours. A detailed study of new particle formation in the Front Range of the Colorado Rocky Mountains is presented here. Gas and particle measurement data for 32 days was analyzed to identify event days, possible event days, and non-event days. A detailed analysis of nucleation and growth is provided for four days on which new particle formation was clearly observed. Evidence for the role of sesquiterpenes in new particle formation is presented.

scholarly journals Effects of urban development on stream ecosystems in nine metropolitan study areas across the United States

Circular ◽  
2012 ◽  
Author(s):  
James F. Coles ◽  
Gerard McMahon ◽  
Amanda H. Bell ◽  
Larry R. Brown ◽  
Faith A. Fitzpatrick ◽  
...  
Keyword(s):  
United States ◽  
Urban Development ◽  
The United States ◽  
Stream Ecosystems

scholarly journals Short Notes: Note on the “Arikaree Stade” of the Rocky Mountains Neoglacial

1971 ◽  
Vol 10 (58) ◽  
pp. 143-144 ◽  
Author(s):  
William Mahaney
Keyword(s):  
Growth Rate ◽  
Rocky Mountains ◽  
Colorado Front Range ◽  
Rate Curve ◽  
Front Range ◽  
Rhizocarpon Geographicum ◽  
Alternative Type ◽  
The Temple

AbstractNeoglacial deposits in the Indian Peaks section of the Colorado Front Range have been dated lichenometrically by recourse to a growth-rate curve developed forRhizocarpon geographicumand three glacial fluctuations of the Temple Lake (4500–2700B.P.), “Arikaree” (1900–1000B.P.) and Gannett Peak (300–50B.P.) have been recognized and identified by Benedict (1968). Recent soil investigations on neoglacial deposits suggest the need to define an alternative type “Arikaree” in the Indian Peaks.

scholarly journals Permafrost Occurrence in the Front Range, Colorado Rocky Mountains, U.S.A.

1971 ◽  
Vol 10 (58) ◽  
pp. 105-111 ◽  
Author(s):  
Jack D. Ives ◽  
Barry D. Fahey
Keyword(s):  
Rocky Mountains ◽  
Indirect Evidence ◽  
Extreme Case ◽  
High Mountain ◽  
Front Range ◽  
Mining Operations ◽  
Air Temperatures ◽  
Temperature Observation ◽  
North American Arctic ◽  
Colorado Rocky Mountains

In contrast to the extensive and rapidly growing body of knowledge on permafrost in the Eurasian and North American Arctic and sub-Arctic, little is known about permafrost occurrence in the high mountain regions of the world. Preliminary results of permafrost studies from the Colorado Rocky Mountains are presented.Above tree line (about 3 500 m) in the Front Range, scattered patches of permafrost begin to occur under wet sites blown free of snow in winter with a mean annual air temperature of about — 1.0°C. At greater elevations, with correspondingly lower mean annual air temperatures (extreme case — 9.0°C and 4400 m), permafrost becomes more extensive and probably exceeds 60 m in thickness. These initial results are derived from a skeleton ground-temperature observation program supplemented by indirect evidence and by data gathered from engineering and mining operations in the high country. It is probable that under the higher summits and ridge crests the alpine equivalent of the continuous zone of Arctic permafrost can be anticipated.

scholarly journals Short Notes: Note on the “Arikaree Stade” of the Rocky Mountains Neoglacial

1971 ◽  
Vol 10 (58) ◽  
pp. 143-144
Author(s):  
William Mahaney
Keyword(s):  
Growth Rate ◽  
Rocky Mountains ◽  
Colorado Front Range ◽  
Rate Curve ◽  
Front Range ◽  
Rhizocarpon Geographicum ◽  
Alternative Type ◽  
The Temple

AbstractNeoglacial deposits in the Indian Peaks section of the Colorado Front Range have been dated lichenometrically by recourse to a growth-rate curve developed for Rhizocarpon geographicum and three glacial fluctuations of the Temple Lake (4500–2700 B.P. ), “Arikaree” (1900–1000 B.P.) and Gannett Peak (300–50 B.P.) have been recognized and identified by Benedict (1968). Recent soil investigations on neoglacial deposits suggest the need to define an alternative type “Arikaree” in the Indian Peaks.

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