Much insight can be derived from records of shot animals. Most researchers using such data assume that their data represents a random sample of a particular demographic class. However, hunters typically select a non-random subset of the population and hunting is, therefore, not a random process. Here, with red deer ( Cervus elaphus ) hunting data from a ranch in Toledo, Spain, we demonstrate that data collection methods have a significant influence upon the apparent relationship between age and weight. We argue that a failure to correct for such methodological bias may have significant consequences for the interpretation of analyses involving weight or correlated traits such as breeding success, and urge researchers to explore methods to identify and correct for such bias in their data.

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A la memoria de mi apreciada amiga y maestra, la doctora María Ruiz TraperoResumen: En el presente artículo se analizan las emisiones arábigas hasta la reforma monetaria de Abd al-Malik del año 77 H. / 696 d. C., partiendo de una revisión de lo publicado hasta el momento sobre todos los aspectos concernientes a ellas. Palabras clave: Bizantino, Árabe, Árabe-bizantino, Dracma Sasánida, Dracma Árabe-Sasánida, Dinar, Dírham, Felús, Abd al-Malik. Abstract:The purpose of this article is to analize arabic issues, up to and including the Abd al-Malik´s Monetary Reform of the 77 AH / 696 AD, starting with a review of all the works published up to date on every aspect of them.

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