Examining Restoration Goals at a Former Military Site: Rocky Mountain Arsenal, Colorado

2014 ◽  
Vol 9 (3) ◽  
pp. 288-315 ◽  
Author(s):  
David G. Havlick ◽  
Marion Hourdequin ◽  
Matthew John

Identifying appropriate restoration goals has long posed a challenge in ecological restoration. The task becomes even more difficult in settings with diverse land use histories. After two decades of remediation, a former chemical weapons facility near Denver, Colorado, has become a national wildlife refuge. Restoration efforts have isolated contaminants and restored bison and native prairie, but the site's complex history invites a deeper consideration of reference conditions. This article presents data from a visitor survey and interviews with land managers and citizen groups to examine conceptions of historical fidelity at this site. Results indicate that visitors and land managers orient toward restoration that features a traditional reference condition. Citizen groups point to restoration of cultural features as the highest priorities. This research highlights disparities between constituencies and suggests that restoration work itself may shape values that inform visitors and affirm how a landscape ought to exist.

1998 ◽  
Vol 76 (2) ◽  
pp. 243-250 ◽  
Author(s):  
Daniel L Allen ◽  
David L Otis

A small-mammal capture-recapture study was conducted in the Rocky Mountain Arsenal National Wildlife Refuge to quantify the effects of soil contamination with dieldrin on demographic parameters of deer mouse (Peromyscus maniculatus) populations. Increased dieldrin concentrations were significantly associated with larger deer mouse populations, although the size of populations on contaminated sites decreased during the study. The most parsimonious model for estimating survival rates was one in which survival was a decreasing function of dieldrin concentration. A significantly higher proportion of female deer mice in the populations residing on the more highly contaminated sites exhibited signs of reproductive activity. Development of genetic resistance in P. maniculatus to chronic chemical exposure is suggested as a possible mechanism responsible for the species' observed dominance and relatively high densities on contaminated sites. Under the additional stress of unfavorable environmental conditions, however, these populations may suffer disproportionately greater mortality. The design and analytical methods presented offer a rigorous statistical approach to assessing the effects of environmental contamination on small mammals at the population level.


Data Series ◽  
10.3133/ds754 ◽  
2013 ◽  
Author(s):  
Alia M. Dietsch ◽  
Natalie R. Sexton ◽  
Lynne M. Koontz ◽  
Shannon J. Conk

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