6533b7d1fe1ef96bd125d5a7

RESEARCH PRODUCT

Quantitative Transfer Function Approaches in Palaeoclimatic Reconstruction Using Quaternary Ostracods

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Abstract Quantifying (palaeo-)environmental changes is a key challenge for aquatic biological proxies, but the number of published transfer functions is increasing rapidly for the main palaeoecologically relevant groups such as diatoms and chironomids, and several transfer functions have also been developed during the past decades based on ostracod findings. The main environmental variables influencing the species assemblage composition in ostracod training sets are specific ion concentrations or ratios, salinity, water temperature and/or water depth. The available transfer functions and training sets are globally scattered, but often regionally restricted in their application. The most common numerical methods in ostracod transfer functions are weighted averaging and weighted averaging partial least squares regression and calibration. Here, we discuss the specific prerequisites to set up new datasets for ostracods and review available transfer functions and their interpretation.