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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....
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2011,
Academics & scientific researchers,
Climate,
Climate change,
Hawaii, All tags...
LCC,
LCC Network Science Catalog,
Pacific Islands LCC,
Pacific Islands Landscape Conservation Cooperative,
Population & Habitat Evaluation/Projection,
Project,
Publication,
Report,
Terrestrial ecosystems,
completed,
native plants, Fewer tags
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Determination of carbon isotope (δ13C) values of tree-ring tissue is a well-established method to reconstruct past climate variability at annual resolution, but such records are limited in tropical latitudes due to the lack of well-defined annual growth bands. Recent work has demonstrated the potential for high-resolution, intra-ring δ13C records to help define ring boundaries in tropical environments and provide additional climate information at sub-annual resolution. Here we present a high-resolution, intra-ring carbon isotope (δ13C) record of the Hawaiian endemic species Sophora chrysophylla(also known as “māmane”) in order to assess the ability to extract seasonal climate information from these drought tolerant...
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Final Report for Reconstructing past Hawaiian precipitation using stable carbon isotope analysis of Māmane trees
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Several cut disks and tree cores of Mamane trees growing on Hawaii Island that were subsampled and analyzed for carbon isotope determination. Isotope determination is at the 100µm resolution; tree samples are within an area of ~100 km2.
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Data,
LCC Network Science Catalog,
LCC Science Catalog,
Pacific Islands LCC,
climate change, All tags...
completed,
conservation,
hawaii,
native plants, Fewer tags
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Reconstructing past Hawaiian precipitation using stable carbon isotope analysis of Māmane trees Data archive
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