This paper tests the hypothesis that product market competition has a negative impact on spatial agglomeration. This hypothesis emerges as an interpetation of the models by Combes and Duranton (2001) and Alsleben (2005) which are about firms' location choice in the presence of knowledge...

Precise knowledge about factors influencing the habitat suitability of a certain species forms the basis for the implementation of effective programs to conserve biological diversity. Such knowledge is frequently gathered from studies relating abundance data to a set of influential variables in...