More specifi cally, the ostracod-based oxygen isotope record from El Gancho, Nicaragua, indicates that wetter conditions prevailed from as early as ca. A.D. 600 until the end of the MCA, ca. A.D. 1250. An abrupt shift toward arid conditions occurred during the ~150 yr interval between the MCA and the LIA, and was followed by a generally drier climate that has persisted until present

Oxygen isotope values of El Gancho surface water samples are enriched by ~8? relative to local meteoric water (Fig. 3), indicating substantial water loss through both evaporation and nonfractionating outfl ow pathways (i.e., overfl ow and outseepage through the lake bed), and a resulting lake water isotopic sensitivity to changes in hydrologic balance. isotopic and hydrologic modeling supports these assertions, indicating that precipitation [amount] is the principle control on El Gancho lake water !18O values. For example, in response to modeled precipitation changes of i¿½50%, El Gancho exhibited water and ostracod !18O increases of >1.5? and decreases of >1.0?, respectively; largely as a result of hydrologic control of the proportions of water lost through evaporation and overfl ow (Table DR5).

year (MAT12f2b34800): The paleoData_values have changed

Column 'addR8Y8paP28SaF5Mafa', with variable name 'ageEnsemble', was added to the dataset
Column 'addRcmSXEhifwDfUDmGC', with variable name 'age.rangeLow', was added to the dataset
Column 'addRHMgfszPXjfpXhXhP', with variable name 'depth', was added to the dataset
Column 'addRIlWKyeEI4g9M25EO', with variable name 'age', was added to the dataset
Column 'addRLAt0KTtNlBgpnd5P', with variable name 'age.rangeHigh', was added to the dataset
Column 'addRvf6XHUF6fdK3ZGrY', with variable name 'depth', was added to the dataset
Column 'LS13STEL-chron-NA1', with variable name 'depth', was added to the dataset
Column 'LS13STEL-chron-NA2', with variable name 'age.rangeLow', was added to the dataset
Column 'LS13STEL-chron-NA3', with variable name 'age.rangeHigh', was added to the dataset
Column 'LS13STEL-chron-NA4', with variable name 'age', was added to the dataset