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Reconstructing past Hawaiian precipitation using stable carbon isotope analysis of Māmane trees

Dates

Creation
2015-01-13 01:53:43
Last Update
2017-08-18 03:17:02
Start Date
2011-07-01
End Date
2013-09-30

Citation

Brian Schubert(Principal Investigator), Pacific Islands Landscape Conservation Cooperative(administrator), 2015-01-13(creation), 2017-08-18(lastUpdate), 2011-07-01(Start), 2013-09-30(End), Reconstructing past Hawaiian precipitation using stable carbon isotope analysis of Māmane trees, http://piccc.net/our-projects/

Summary

We analyzed the chemical composition of wood produced by Māmane, a tropical tree growing in Hawai’i, in order to reconstruct changes in climate over the Hawaiian Islands. Specifically, we measured changes in the relative abundance of carbon and oxygen isotopes taken up by the trees during photosynthesis at high elevation sites on Mauna Kea. We found that these isotopes reflect the climatic conditions (precipitation and temperature) under which the trees lived, allowing us to reconstruct relative changes in climate extending back ~130 years. Our results indicate decadal-scale changes in precipitation that correlate well with large-scale atmospheric and ocean circulation patterns that dominate much of the Pacific. In addition, we interpret [...]

Child Items (1)

Contacts

Budget Extension

totalFunds42888.0
annualBudgets
fundingSources
amount42888.0
recipientBrian Schubert
sourceU.S. Fish and Wildlife Service
totalFunds42888.0

Project Extension

projectStatusCompleted
parts
typeShort Project Description
valueWe analyzed the chemical composition of wood produced by Māmane, a tropical tree growing in Hawai’i, in order to reconstruct changes in climate over the Hawaiian Islands. Specifically, we measured changes in the relative abundance of carbon and oxygen isotopes taken up by the trees during photosynthesis at high elevation sites on Mauna Kea. We found that these isotopes reflect the climatic conditions (precipitation and temperature) under which the trees lived, allowing us to reconstruct relative changes in climate extending back ~130 years. Our results indicate decadal-scale changes in precipitation that correlate well with large-scale atmospheric and ocean circulation patterns that dominate much of the Pacific. In addition, we interpret [...]

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