| Contributors | Affiliation | Role |
|---|---|---|
| Sachs, Julian P. | University of Washington (UW) | Principal Investigator |
| Dawson, Michael N. | University of California-Merced (UC Merced) | Co-Principal Investigator |
| Rauch, Shannon | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
This is the raw data from the ITRAX instrument.
Core was recovered from Ongael Lake with a Universal corer on 11-Sept-2013. Magnetic Susceptibility was measured at ANSTO with ITRAX instrument on 14-Oct-2013.
No processing has been done. These are raw data.
| File |
|---|
POLO-UC1_mag_sus.csv (Comma Separated Values (.csv), 12.82 KB) MD5:298c0c303d245a9a3efbb0a19220055b Primary data file for dataset ID 473114 |
| Parameter | Description | Units |
| lat | Latitude where the sediment core was taken. | decimal degrees |
| lon | Longitude where the sediment core was taken. | decimal degrees |
| year | 4-digit year when the sediment core was taken. | YYYY |
| month | 2-digit month of year when the sediment core was taken. | 01 to 12 |
| day | 2-digit day of month when the sediment core was taken. | 01 to 31 |
| position | Position along the sediment core. | millimeters (mm) |
| validity | ||
| bottom_measurement | Magnetic susceptibility, bottom measurement. | unitless, reported as SI x 10^-5 |
| top_measurement | Magnetic susceptibility, top measurement. | unitless, reported as SI x 10^-5 |
| corrected_measurement | Magnetic susceptibility, corrected measurement. | unitless, reported as SI x 10^-5 |
| Dataset-specific Instrument Name | Universal corer |
| Generic Instrument Name | Gravity Corer |
| Generic Instrument Description | The gravity corer allows researchers to sample sediment layers at the bottom of lakes or oceans. The coring device is deployed from the ship and gravity carries it to the seafloor. (http://www.whoi.edu/instruments/viewInstrument.do?id=1079). |
| Dataset-specific Instrument Name | ITRAX XRF |
| Generic Instrument Name | ITRAX X-ray Fluoresence Core Scanner |
| Dataset-specific Description | Magnetic Susceptibility Data from the Palau sediment core from Ongael Lake was measured at ANSTO with ITRAX instrument on 14 October 2013. See more at: http://www.ansto.gov.au/ResearchHub/IER/Capabilities/Radiochemistry/inde... |
| Generic Instrument Description | An Itrax X-ray Fluoresence (XRF) core scanner provides high-resolution, non-destructive elemental analysis of sediment cores. They can provide optical and radiographic images as well as XRF spectrometry elemental profiles. Itrax instruments may accommodate a variety of sample types including sediment and rock cores, speleothems, corals and wood. |
| Website | |
| Platform | shoreside Palau |
| Start Date | 2013-09-11 |
| End Date | 2013-10-08 |
This project will survey the taxonomic, genetic, and functional diversity of the organisms found in marine lakes, and investigate the processes that cause gains and losses in this biodiversity. Marine lakes formed as melting ice sheets raised sea level after the last glacial maximum and flooded hundreds of inland valleys around the world. Inoculated with marine life from the surrounding sea and then isolated to varying degrees for the next 6,000 to 15,000 years, these marine lakes provide multiple, independent examples of how environments and interactions between species can drive extinction and speciation. Researchers will survey the microbes, algae, invertebrates, and fishes present in 40 marine lakes in Palau and Papua, and study how diversity has changed over time by retrieving the remains of organisms preserved in sediments on the lake bottoms. The project will test whether the number of species, the diversity of functional roles played by organisms, and the genetic diversity within species increase and decrease in parallel; whether certain species can greatly curtail diversity by changing the environment; whether the size of a lake determines its biodiversity; and whether the processes that control diversity in marine organisms are similar to those that operate on land.
Because biodiversity underlies the ecosystem services on which society depends, society has a great interest in understanding the processes that generate and retain biodiversity in nature. This project will also help conserve areas of economic importance. Marine lakes in the study region are important for tourism, and researchers will work closely with governmental and non-governmental conservation and education groups and with diving and tourism businesses to raise awareness of the value and threats to marine lakes in Indonesia and Palau.
(adapted from the NSF Synopsis of Program)
Dimensions of Biodiversity is a program solicitation from the NSF Directorate for Biological Sciences. FY 2010 was year one of the program. [MORE from NSF]
The NSF Dimensions of Biodiversity program seeks to characterize biodiversity on Earth by using integrative, innovative approaches to fill rapidly the most substantial gaps in our understanding. The program will take a broad view of biodiversity, and in its initial phase will focus on the integration of genetic, taxonomic, and functional dimensions of biodiversity. Project investigators are encouraged to integrate these three dimensions to understand the interactions and feedbacks among them. While this focus complements several core NSF programs, it differs by requiring that multiple dimensions of biodiversity be addressed simultaneously, to understand the roles of biodiversity in critical ecological and evolutionary processes.
| Funding Source | Award |
|---|---|
| NSF Division of Ocean Sciences (NSF OCE) |