Research About caves

Posted On: Filed Under: Biological Research

Cave biology in the Mount St. Helens Cave Basalt lava flow

This study seeks to establish an inventory of species inhabiting and using lava tubes and caves in the Cave Basalt lava flow. Bat populations in caves are dominated by Plecotus townsendii. Of small mammal species inhabiting or using caves, deer mice (Peromyscus maniculatus) are most wide spread. Few amphibians were observed; the most significant amphibian finding was a population of Larch Mountain salamander (Plethodon larselli). 256 invertebrate species of which approximately 100 species are arthropods have been collected in caves.

 

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Posted On: Filed Under: Biological Research

Effects of eruptions and post-eruptive phenomena on caves and pseudokarst of Mount St. Helens

Beginning June 1980 systematic observations and measurements are documenting the effects of the eruption and post-eruptive events on the caves and pseudokarst of Mount St. Helens. Caves of the Cave Basalt Lava Flow were essentially free of physical impacts by the eruptions, but the biota of some was severely impacted by ashfall. Depending on the local physical geography, some of the caves were severely impacted by post-eruption mudflows.

 

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Posted On: Filed Under: Biological Research

The effects of the eruptions of Mount St. Helens on glaciers, glacier caves, caves and mudflows, etc.

The objectives of this project are to study effects of eruptions on glaciers and glacier pseudokarst and to map glacier caves and glacier margin and other caves on Mount St. Helens. In meeting these objectives we will document and photograph (1) these features; (2) effects of ashfall and mudflows on newly exposed glacier bed and downslope detritus and erosion produced by melting glaciers; (3) effects on crater, dome and caves in crater.

 

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