Publications

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the chromosomes of the hadada ibis and comments on the karyotype evolution in threskiornithidae (aves, ciconiiformes).the karyotype of hagedashia hagedash differs from that of the other ibises karyotyped and introduces further karyotypic variability within the family threskiornithidae. this variability is in contrast with the generalized karyotypic uniformity of birds and the karyotypic identity displayed by the family ciconidae, which is closely related to the ibises. a discussion is presented of parameters of ethological structure of the populations that can, in some cases, allow chromosomal rearrangement to ...19827151491
climate and the range dynamics of species with imperfect detection.reliable predictions for species range changes require a mechanistic understanding of range dynamics in relation to environmental variation. one obstacle is that most current models are static and confound occurrence with the probability of detecting a species if it occurs at a site. here we draw attention to recently developed occupancy models, which can be used to examine colonization and local extinction or changes in occupancy over time. these models further account for detection probabiliti ...200818664423
dynamic occupancy models for analyzing species' range dynamics across large geographic scales.large-scale biodiversity data are needed to predict species' responses to global change and to address basic questions in macroecology. while such data are increasingly becoming available, their analysis is challenging because of the typically large heterogeneity in spatial sampling intensity and the need to account for observation processes. two further challenges are accounting for spatial effects that are not explained by covariates, and drawing inference on dynamics at these large spatial sc ...201324455124
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