Understanding the factors that drive population dynamics is fundamental to species conservation and management. Since the golden-cheeked warbler Setophaga chrysoparia was first listed as endangered, much effort has taken place to monitor warbler abundance, occupancy, reproduction and survival. Yet, despite being directly related to local population dynamics, movement rates have not been estimat...

The “age-dependent parity progression model” is intended to describe the birth process of females by introducing the age distribution density of women who have a given birth order (number of births) and the ageparity-specific fertility. The idea of population dynamics based on parity progression can be traced back to Henry [I], and later Whelpton [2] and Feeney [3]. The advantage of this model ...

Capitella sp. I is a deposit-feeding polychaete that occurs in estuarine and marine environments and that shows boom-bust population dynamics in response to organic pollution. A lifecycle experiment was carried out to quantify the relative importance of individual life-history traits for driving the dynamics of Capitella sp. I populations in response to changes in sediment organic matter concen...

To justify and defend lethal or reproductive control programs to solve vertebrate pest problems, wildlife biologists must have a sound understanding of the population status and dynamics of the problem species. Models are essential to project how populations will respond to proposed management actions, providing a scientific foundation to counter the emotional debates that often arise. Four pop...

Climate variability can affect population dynamics via adult survival or via offspring production and recruitment. The relative importance of both processes is still an unresolved matter, especially in long-lived species, where the time lags between the climate signal and the population response differ greatly depending on the process involved. We address the issue using 378 time series from 29...

introduction: the purpose of this study was to evaluate the number of distal roots and canals in mandibular first molars and their internal anatomy radiographically within iranian population. materials and methods: a total of 310 distal roots of mandibular first molars were incorporated in this study and evaluated in terms of number of roots and number and types of canals. root canal systems we...

purpose : to determine the prevalence of ptosis and its correlation with vision-related variables in tehran population methods : through a stratified cluster random sampling, 160 clusters were selected proportional to the population of each municipal district of the city. all consented participants were transferred to the clinic and underwent thorough eye examination. here we report the prevale...

abstract background: it is well recognized that different patients respond in different ways to medications. the inter-individual variations are greater than the intera- individual variations, a finding consistent with the notion that inheritance is a determinant of drug responses. the recent identification of genetic polymorphisms in drug-metabolizing enzymes and drug transporters led to the h...