Landscape effects on anuran pond occupancy in an agricultural countryside: barrier-based buffers predict distributions better than circular buffers

摘要: Species movement and occupancy of habitat patches are dependent on landscape permeability. Some land-use types (e.g., roads) may be barriers to animal movement. Analyses the effect structure patch usually use circular buffers around focal patches. The main assumption this methodological approach is that species affected by a particular element equally in every direction from given patch. This likely not hold if restricted because reduce patterns reshape ideal buffer into noncircular buffer. We developed method determine variables oil distribution two amphibian explicitly takes dispersal account. extracted within (i) (CB) (ii) barrier-based (BBB). BBB were produced reducing boundaries CB according major impassable barriers. almost doubled explained deviance multiple regression models comparison with approach. Moreover. included different predictor variables. Suggest more Useful than traditional analyses species-habitat relationships ecological taken account..