deletions | additions       diff --git a/introduction.tex b/introduction.tex  index a832d48..5f6ef54 100644  --- a/introduction.tex  +++ b/introduction.tex 
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We selected the Eemian (MIS 5e, ~130 ka BP) as modeling period for three different reasons: 1) the distribution of Neanderthals during this period has only been assessed by Richter (2005, 2006), \cite{Wenzel_2007} and Gaudzinski-Windheuser & Roebroeks (2011), but those studies lack a quantitative description of Neanderthals distribution and its limiting factors, and are mostly focused on the core and northern edge of the distribution area across central Europe; 2) Since the publication of \cite{Wenzel_2007}, Neanderthal remains attributed to the Eemian have been found in Spain \cite{ÁlvarezAlonso2014288} \cite{Arsuaga2012629}, Italy (CITATION), France \cite{Moncel200765}, and those new sites considered together have the potential to change our view about the Eemian distribution of Neanderthals; 3) During the Eemian, the warmer climatic conditions freed Europe from the Saalian ice sheet, offering the Neanderthals a unique opportunity to thrive and spread throughout Europe for 10000 years, and probably allowing them to reach their maximum range size. The Eemian can be therefore considered the most suitable period to assume a pseudo-equilibrium with climate for Neanderthals distribution, a key assumption for PSDMs \cite{Guisan_2005} \cite{Guisan2000147}.  In summary, in this paper we propose a hypothesis about how abiotic drivers (climate and topography) could have shaped Neanderthals distribution throughout Europe, and we test it hypothesis by fitting and analyzing a PSDM describing their distribution during the Last Interglacial.