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Ecological studies on Hawaiian lava tubes

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Title: Ecological studies on Hawaiian lava tubes
Authors: Howarth, Francis G.
LC Subject Headings: Cave animals -- Hawaii.
Lava tubes -- Hawaii.
Cave plants -- Hawaii.
Issue Date: Dec 1972
Publisher: Island Ecosystems IRP, U.S. International Biological Program
Citation: Howarth F. 1972. Ecological studies on Hawaiian lava tubes.Honolulu (HI): Island Ecosystems IRP, U.S. International Biological Program. International Biological Program Technical Report,16.
Series/Report no.: International Biological Program Technical Report
Abstract: The Hawaiian Islands offer great potential for evolutionary research. The discovery of specialized cavernicoles among the adaptively radiating fauna adds to that potential. About 50 lava tubes and a few other types of caves on 4 islands have been investigated. Tree roots, both living and dead, are the main energy source in the caves. Some organic material percolates into the cave through cracks associated with the roots. Cave slimes and accidentals also supply some nutrients. Lava tubes form almost exclusively in pahoehoe basalt, usually by the crusting over of lava rivers. However, the formation can be quite complex. Young basalt has numerous avenues such as vesicles, fissures, layers, and smaller tubes which allow some intercave and interlava flow dispersal of cavernicoles. In older flows these avenues are plugged by situation or blocked or cut by erosion.
Description: Reports were scanned in black and white at a resolution of 600 dots per inch and were converted to text using Adobe Paper Capture Plug-in.
Sponsor: Island Ecosystems IRP, U.S. International Biological Program
Pages/Duration: 20 pages
Rights: CC0 1.0 Universal
Appears in Collections:International Biological Program Technical Reports (1970-1975)

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