In seasonally inundated landscapes of southern central Africa very large termite mounds Macrotermes natalensis offer a refuge for flood-intolerant trees during the flood season. matrix landscape surrounding these islands waterlogged and then anaerobic soil conditions browsing by megaherbivores dry season allow grass herbaceous vegetation only. During rainy each termitarium forms an isolated isl...

Litter decomposition makes possible the nutrient cycling and is a link between vegetation soil, vital for healthy forest ecosystem. Although several studies on litter have been carried out in different regions of Brazil, there are few transitional zones Cerrado Caatinga, particularly state Piauí. Therefore, objective this work was to evaluate litterfall production, composition rate tropical dry...

Abstract Motivation Trait‐based studies remain limited by the quality and scope of underlying trait data available. Most existing databases treat species traits as fixed across time, with any potential temporal variation in measured being unavailable. This is despite fact that many are well known to show plasticity their characteristics over course year. paper describes a compilation species‐sp...

This paper studies the effect of using different types of seasonally varying contact rate on the behaviour of the seasonally varying infectious diseases for an SEIR epidemic model. Our target is to investigate the long term behaviour of the system in response to changes in beta(1), the amplitude parameter of the seasonal contact rate, which is our bifurcation parameter. This amplitude parameter...

Vaccination can delay the peak of a pandemic influenza wave by reducing the number of individuals initially susceptible to influenza infection. Emerging evidence indicates that susceptibility to severe secondary bacterial infections following a primary influenza infection may vary seasonally, with peak susceptibility occurring in winter. Taken together, these two observations suggest that vacci...