Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:Determining the factors leading to current patterns of biodiversity loss in humandegraded landscapes is thus important in order to assess the likely effectiveness of future conservation efforts (Jeanneret et al. 2003a; Little et al. 2013).
Category: