Pattern-oriented modelling for estimating unknown pre-breeding survival rates: The case of the Lesser Spotted Woodpecker (Picoides minor)

摘要: Abstract In population viability analysis we are often faced with a lack of knowledge survival rates in animal populations. particular, recruits is usually hard to assess. However, data on structure might be considered as patterns that contain valuable information estimate missing parameters indirectly. As an example for this pattern-oriented modelling and parameterization, pre-breeding rate the endangered Lesser Spotted Woodpecker (Picoides minor) was determined here using (e.g. sex ratio) reproductive success at level nesting success). Therefore, individual-based model developed simulating dynamics two different populations had been empirically studied Lake Mockeln, Sweden, Taunus, Germany. For both populations, small range could identified wherein all simulated corresponded best empirical values. Pre-breeding found higher German scenario than Swedish geographical variation life-history traits discussed possible reason. It concluded approach method estimating demographic parameters, even when weak from investigations. Furthermore, it shown use multiple necessary purpose.