Column 'RFO5e2mVsrUxl2yqW', with variable name 'reject', was added to the dataset
Column 'LS06POVE-chron-NA1', with variable name 'reject', was removed from the dataset

d18O (LS06POVE01a): interpretation1_variable: '?18O.precipitation' has been replaced by 'precipitationIsotope'
d18O (LS06POVE01a): interpretation2_variable: 'P_isotope' has been replaced by 'precipitationIsotope'
d18O (LS06POVE01a): interpretation3_variable: 'T_water' has been replaced by 'temperature'

d18O (LS06POVE01a): paleoData_longName: '' has been replaced by 'AD'
depth (MAT14ce578da8): paleoData_longName: '' has been replaced by 'AD'
year (MAT9243747b31): paleoData_units: 'AD' has been replaced by 'yr AD'
year (MAT9243747b31): paleoData_longName: '' has been replaced by 'AD'

Polissar, P , Abbott, M , Shemesh, A , Wolfe, A , Bradley, R

POLISSAR, P., ABBOTT, M., SHEMESH, A., WOLFE, A. and BRADLEY, R.: Holocene hydrologic balance of tropical South America from oxygen isotopes of lake sediment opal, Venezuelan Andes, Earth and Planetary Science Letters, 242(3-4), 375–389, doi:10.1016/j.epsl.2005.12.024, 2006.

Holocene hydrologic balance of tropical South America from oxygen isotopes of lake sediment opal, Venezuelan Andes

HP 6890 GC, Finnigan MAT Delta+ XL mass spectrometer

Check that inferred material is correct (soil water vs lake water). ; change mathematical relation = "it depends..." to nonlinear?

Given the lack of correlation between dDlw and pollen- inferred mean July temperatures (Fig. 6), the downcore dDlw changes likely represent either a change in the ratio of soil water and precipitation utilized by the vegetation and/ or a change in source and pathway of regional precipita- tion. The dDlw data may indicate a heavy reliance of terrestrial plants on cool-season derived soil moisture from 11,000?8000 cal yr BP when conditions were dry. Growing- season precipitation may have been too low to provide sufficient water to the plants. An alternative and not mutually exclusive interpretation is that growing-season precipitation was not enriched in deuterium from 11,000?8000 cal yr BP because the presence of high pressure over the Laurentide ice sheet prevented the northward advection of humid, sub-tropical airmasses that are important for summer precipitation today. Both interpre- tations are consistent with Shuman and Donnelly?s (2006) interpretation that low lake levels prior to ca 8200 cal yr BP resulted from low summer precipitation rates and a high ratio of winter to summer precipitation.