Effects of restoration treatments and forest type on soil microarthropod communities in Valles Caldera National Preserve Channing Laturno Dr. Anita Antoninka,

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Presentation transcript:

Effects of restoration treatments and forest type on soil microarthropod communities in Valles Caldera National Preserve Channing Laturno Dr. Anita Antoninka, Dr. Matthew Bowker, Kara Gibson Northern Arizona University

Changes in soil communities may lead to altered ecosystem processes Microarthropods are soil animals that contribute to decomposition and nutrient cycling Changes in soil communities may lead to altered ecosystem processes Wardle et al. 2004

Southwest ponderosa pine forests are at risk Restoration treatments are becoming more common Treatment effects on soil ecosystem unknown Southwest soil communities understudied 1908 (G. Pearson) 1938 (G. Pearson) 2000 (J. Waskiewicz)

Research Questions 1. What is the effect of restoration treatments on microarthropod abundance and diversity? 2. How do microarthropod communities vary between forest types?

Sampling site: Valles Caldera National Preserve, NM west unit thinned jan-oct 2012, east unit thinned april-july 2014. west burned oct 2015, east burned oct 2016. Samples taken aug-sept 2016. Imagery is from June 2014. (the brown color in east unit is logging debris)

Mites Collembola ~200 μm ~200 μm

Preliminary results: restoration treatments

Preliminary results: restoration treatments

Preliminary results: forest type

Preliminary results: forest type

Conclusions Preliminary results show no differences Further analysis is expected to strengthen trends: Thin and burn Mesic mixed conifer Better understanding the impacts of management activities on soil biota

Acknowledgements Dr. Anita Antoninka and Dr. Matthew Bowker Kara Gibson Matthew Ford, Dustin Kebble, Ryan Lancione, Jeff Propster, Andrea Raya, Aradhana Roberts, Michael Sloan, Zach Sumner Valles Caldera National Preserve Colorado Plateau Cooperative Ecosystem Studies Unit NASA Space Grant Program