Density-dependent selection, which promotes contrasting patterns of trait means at different
population densities, has a long history in population genetics and ecology. The unifying …

Early survival is highly variable and strongly influences observed population growth rates in
most vertebrate populations. One of the major potential drivers of survival variation among …

For species with temperature-dependent sex determination (TSD) there is the fear that rising
temperatures may lead to single-sex populations and population extinction. We show that for …

Population dynamics models have long assumed that populations are composed of a
restricted number of groups, where individuals in each group have identical demographic …

The adult sex ratio (ASR) is a fundamental concept in population biology, sexual selection,
and social evolution. However, it remains unclear which demographic processes generate …

Understanding how the natural world will be impacted by environmental change over the
coming decades is one of the most pressing challenges facing humanity. Addressing this …

Population ecology, the discipline that studies the dynamics of species' populations and how
they interact with the environment, has been one of the most prolific fields of ecology and …

Theoretical models and empirical studies in various taxa have identified important links
between variation in sex roles and the number of adult males and females (adult sex ratio …

The Trivers–Willard hypothesis has commonly been considered to predict two things. First,
that a mother in good condition should bias the sex ratio of her offspring towards males (if …

Across vertebrates, species with intense male mating competition and high levels of sexual
dimorphism in body size generally exhibit dimorphism in age-specific fertility. Compared …