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Changes in vegetation and environment over the holocene Ka'au Crater, O'ahu, Hawaiʻi

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Item Summary

Title: Changes in vegetation and environment over the holocene Ka'au Crater, O'ahu, Hawaiʻi
Authors: Schubert, Olivia Susan
Keywords: Ka'au Crater
paleoclimate
pollen
holocene
vegetation
Issue Date: Dec 2012
Publisher: [Honolulu] : [University of Hawaii at Manoa], [December 2012]
Abstract: Rainfall at three mountaintop locations, two windward: Palolo (Ka'au Crater), Poamoho, and one leeward: Mount Ka'ala, on O'ahu, Hawaiʻi, was analyzed. Poamoho was found to receive the greatest rainfall monthly and annually, from 1920-2007, followed by Palolo and Mount Ka'ala. Ka'au Crater sits at 460 m elevation in the southern Ko'olau Mountains and at present contains a wetland ecosystem and has accumulated many meters of sediment. At Ka'au Crater, both rainfall and water table level were measured and were greatest between November and March. Rainfall and water table level were found to have a significant relationship. A 4.5 m sediment core retrieved from the crater dating through the Holocene, with seventeen 14C dates, contains fossil pollen including Malvaceae, a dry indicator, and wetindicator taxa such as Arecaceae Prichardia. The precipitation reconstruction derived from the pollen stratigraphy shows a drier early Holocene and a relatively wetter mid to late Holocene.
Description: M.A. University of Hawaii at Manoa 2012.
Includes bibliographical references.
URI/DOI: http://hdl.handle.net/10125/100816
Appears in Collections:M.A. - Geography



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