Abstract

AbstractThe U.S. Army Corps of Engineers Albuquerque District, in collaboration with various local partners, has been implementing restoration projects in the Albuquerque Reach of the Middle Rio Grande. These projects have included the removal of the metal jetty jacks, debris, and dense thickets of non-native vegetation (salt cedar, Russian olive, and Siberian elm) that occur in the bosque (riparian forest), creation of wet habitats (such as willow swales and high-flow channels), and revegetation schemes focused on increasing the diversity and quality of wildlife habitat. The goal of many of these projects is to develop a framework to restore the bosque into a more functional and sustainable ecosystem. Projects implemented on the ground are being monitored for various restoration success components – such as vegetation response, wildlife use and response, and surface water-ground water interaction. This monitoring has provided important information in regards to planning future restoration efforts that meet all project objectives. Monitoring has also pointed out where improvement is needed and adaptive management can be implemented. This presentation will give an overview of the various projects and monitoring that has taken place and how information gained has been beneficial.

Highlights

  • Completed and ongoing monitoring ‘Adaptive Management’ – changes to implementation of restoration based on monitoring results

  • Evaluate differences in soil fertility and ground-dwelling arthropod diversity in constructed willow wetlands compared to adjacent “unrestored” sites and natural willow bars

  • The analysis of the surface/ground water interaction will lead to adaptive management strategies of existing projects and design of future projects

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Summary

Why restoration is needed

Loss of native riparian habitat due to the cumulative effects of agriculture, urban development and flood protection measures (dams, levees, jetty jacks) initiated over the last seven decades resulting in a disruption in the original hydrologic (hydraulic) regime (loss of hydrologic connection between river and ‘bosque’). Fire danger due to lack of ‘flushing’ flows and populations of non-native vegetation

MRG Restoration Projects
Willow Swale Restoration Study
Clear relationship between mulch depth and species richness
Sixteen species of butterflies detected each year
Monitoring ongoing
Adaptive Management based on monitoring
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