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Guidelines for public use measurement and reporting at parks and protected areas
… as long as they are not exposed by trail wear or erosion. Seismic sensors are adjustable for both sensitivity … buried in the ground can be exposed over time by soil erosion or flotation in certain soil conditions. Seismic …
Speaking a common language: The uses and performance of the IUCN system of management categories for protected areas
… avalanche control, protection of watersheds or as an anti-erosion measure, but not be included within the protected … water, avalanche control, firebreaks, windbreaks and erosion control – Forests protected primarily as a community …