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Life Sciences Commons

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California Polytechnic State University, San Luis Obispo

Series

Restoration

2015

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Full-Text Articles in Life Sciences

Sediment Loss Of Santa Rosa Island Slopes: An Erosional Study, Michael Perez Aug 2015

Sediment Loss Of Santa Rosa Island Slopes: An Erosional Study, Michael Perez

STAR (STEM Teacher and Researcher) Presentations

Ranching began on Santa Rosa Island in the 1840’s, consequently introducing nonnative megafauna that put novel selective grazing pressures on endemic plant species. Their movement patterns also altered sediment integrity as the land was denuded of any stabilizing vegetation. Dense groves of island oak (Q. tomentella) are known to aid in sediment deposition and retention. The groves also function to collect water during periods of intense fog that are common to the island. This experiment sought to quantify the volume of sediment that has been lost on a south facing slope in the middle of the island that contains ...