1 / 20

Tim Ramsey and Joshua Voss BHP Billiton March 2013

A COMPARISON OF THE VEGETATION COMMUNITIES ON GEOMORPHIC AND NON-GEOMORPHIC RECLAIMED MINE LANDS IN NORTHWESTERN NEW MEXICO. Tim Ramsey and Joshua Voss BHP Billiton March 2013. Geomorphic and Non-geomorphic Vegetation Comparison. Introduction San Juan Mine (SJM).

luther
Download Presentation

Tim Ramsey and Joshua Voss BHP Billiton March 2013

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A COMPARISON OF THE VEGETATION COMMUNITIES ON GEOMORPHIC AND NON-GEOMORPHIC RECLAIMED MINE LANDS IN NORTHWESTERN NEW MEXICO Tim Ramsey and Joshua Voss BHP Billiton March 2013

  2. Geomorphic and Non-geomorphic Vegetation Comparison Introduction • San Juan Mine (SJM) Joshua Voss, March 2013

  3. Geomorphic and Non-geomorphic Vegetation Comparison Non-geomorphic reclamation (West Gravel Hill or WGH) Introduction • San Juan Mine (SJM) Geomorphic reclamation (Cottonwood south east or CWSE) Joshua Voss, March 2013

  4. Geomorphic and Non-geomorphic Vegetation Comparison Introduction • San Juan Mine (SJM) • WGH • Non-geomorphic • Approximately 450 acres • Seeded 1986-1992 • Vegetation sampled 2001-2003 • CWSE • Geomorphic • Approximately 122 acres • Seeded 2002 • Vegetation sampled 2012 Joshua Voss, March 2013

  5. Geomorphic and Non-geomorphic Vegetation Comparison Cover Percent of the surface that is covered by vegetation and/or litter • Density • Number of plants per unit area Procedures Joshua Voss, March 2013

  6. Geomorphic and Non-geomorphic Vegetation Comparison Procedures Joshua Voss, March 2013

  7. Geomorphic and Non-geomorphic Vegetation Comparison Perennial cover (%) Results Joshua Voss, March 2013

  8. Geomorphic and Non-geomorphic Vegetation Comparison p = 0.01 Perennial cover (%) p < 0.01 Results Joshua Voss, March 2013

  9. Geomorphic and Non-geomorphic Vegetation Comparison Shrub density (shrubs / ac) Results Joshua Voss, March 2013

  10. Geomorphic and Non-geomorphic Vegetation Comparison p = 0.13 Shrub density (shrubs / ac) Results p = 0.34 Joshua Voss, March 2013

  11. Geomorphic and Non-geomorphic Vegetation Comparison Relative perennial grass cover (%) Results Joshua Voss, March 2013

  12. Geomorphic and Non-geomorphic Vegetation Comparison Relative shrub cover (%) Results Joshua Voss, March 2013

  13. Geomorphic and Non-geomorphic Vegetation Comparison Relative shrub cover (%) Results Joshua Voss, March 2013

  14. Geomorphic and Non-geomorphic Vegetation Comparison Relative shrub cover (%) Results Joshua Voss, March 2013

  15. Geomorphic and Non-geomorphic Vegetation Comparison Number of species Results Joshua Voss, March 2013

  16. Geomorphic and Non-geomorphic Vegetation Comparison 1) Perennial cover was significantly greater on the geomorphic vs. the non-geomorphic area • 2) Shrub density not significantly different in the geomorphic vs. the non-geomorphic area • 3) Overall species composition was similar; the geomorphic landscape possibly favors shrub species diversity while the non-geomorphic area possibly favors perennial grass species diversity Conclusions Joshua Voss, March 2013

  17. Geomorphic and Non-geomorphic Vegetation Comparison 1) Continued sampling of geomorphic and non-geomorphic areas at San Juan Mine Further work Joshua Voss, March 2013

  18. Geomorphic and Non-geomorphic Vegetation Comparison 1) Continued sampling of geomorphic and non-geomorphic areas at San Juan Mine 2) Initiation of sampling of geomorphic areas at La Plata Mine Further work Joshua Voss, March 2013

  19. Geomorphic and Non-geomorphic Vegetation Comparison Questions? Joshua Voss, March 2013

More Related