Conveners
Population dynamics models with broader ecological, evolutionary, and social feedbacks: Part A
- Atsushi Yamauchi (Kyoto University)
Population dynamics models with broader ecological, evolutionary, and social feedbacks: Part B
- Atsushi Yamauchi (Kyoto University)
Description
Population dynamics are a traditional focus of mathematical biology, dating from the pioneering work of Volterra and Lotka. Importantly, the rates of change of species' abundances have broader consequences, affecting a diverse range of processes that includes evolutionary, behavioural, ecosystem and human dynamics. In this minisymposium, we highlight biomathematical models that couple population dynamics with these broader factors. Not only do these coupled feedback models help us understand the behaviour of broader systems, they are also essential to an accurate understanding of the population dynamics themselves, and how to manage them. Developments in this modelling space can help us understand essential characteristics of ecological systems, and also generate mathematically interesting complex system behaviours, which could stimulate new theoretical hypotheses.
In this session, three speakers will demonstrate population dynamic models that are integrated with intrinsic processes of organisms, i.e., evolution, behaviour and inducible responses. Two speakers will present about joint dynamics of populations and management policy, in the context of biodiversity conservation and agricultural damage control.
Two consumer species that share a single resource species can indirectly interact each other, even without direct interactions. A typical indirect interaction is exploitative resource competition that results from a depression of resource biomass by consumption, which can be referred to as “biomass-mediated indirect effect”. Another type of indirect interaction is called “trait-mediated...
It has long been debated whether introduction of two (or more) natural enemies results in more efficient pest control than that of either one enemy. Intra-guild predation (IGP) among two natural enemies sharing a single pest has been recognized as an important factor to reduce efficiency of pest control. While the classical theoretical model of IGP showed that introduction of two natural...
Sexual dimorphism (SD), sexual differences in traits, represents one of the most remarkable source of biodiversity in the world. In most of species, two sexes play different roles in reproduction and thus are imposed by selection pressures in different forms and strengths. This explains the generality of this phenomenon and the extensive applicability of SD theory in nature. In this talk, I...
Overpopulated mammal populations cause damage to agricultural crops in Japan. We need to keep population sizes at appropriate levels. When we determine management plans, we have to deal with various uncertainties such as population size, population growth rate, and agricultural damages caused by mammals due to lack of sufficient data. It is important to reduce those uncertainties and allocate...
Conservation management decisions are often implemented at the scale of human communities, rather than the scale of the most relevant ecological dynamics. Research frequently points out the loss in efficiency that results from such "scale mismatches". However, the scale of management is influenced by socio-economic constraints on management actors - not all people want to cooperate with each...
Species interactions are important to determine structure and stability of ecological communities. In particular, a variety of indirect effects appear between species which do not interact directly. However, indirect effects do also appear between species that directly interact. For example, plant species sharing a common herbivore may engage in both interference competition directly with...