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Tristan da Cunha Soil Erosion Model 2019

Terrestrial Overseas Territories Erosion regulation Habitat Landscape Natural capital Protection Sediment Soil Tristan da Cunha

Abstract

Over the last few years, Tristan has suffered some major events of soil erosion. These events have destroyed a significant area of the pasture land upon which the inhabitants rely, and are a potential threat to water security and safety of the settlement. The mechanism for this erosion is not clear, however it is thought that that vegetation at the top of the cliffs (the edge of The Base) is becoming saturated and the water is seeping in between the soil and the unconsolidated layers of volcanic material, pooling until it reaches a sheer zone, causing the soil to slump. Factors effecting the distribution and severity of these events include the geology, biophysical properties, land use, ecology and climate found on the island.

Resource type Publication

Topic category Environment

Reference date 2019·04·01

Citation
Williams, J., Medcalf, K., Ties, S., Smith, N. (2019). Soil erosion model for Tristan da Cunha.

Lineage
Refer to report

Responsible organisation
Communications, JNCC distributor

Limitations on public access Open Access

Use constraints Open, cite source of data

Metadata date 2019·08·20

Metadata point of contact
Communications, JNCC

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