Jeremy J. Midgley

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Bringing together leaf trait data spanning 2,548 species and 175 sites we describe, for the first time at global scale, a universal spectrum of leaf economics consisting of key chemical, structural and physiological properties. The spectrum runs from quick to slow return on investments of nutrients and dry mass in leaves, and operates largely independently(More)
Resprouting as a response to disturbance is now widely recognized as a key functional trait among woody plants and as the basis for the persistence niche. However, the underlying mechanisms that define resprouting responses to disturbance are poorly conceptualized. Resprouting ability is constrained by the interaction of the disturbance regime that depletes(More)
We report on a new plant-animal mutualism in which the plant Roridula gorgonias, first suspected by Darwin (1875) to be carnivorous, is, at least in part, indirectly carnivorous. This plant has sticky leaves which trap many insects but it has no digestive enzymes. Instead, trapped invertebrates are rapidly consumed by a hemipteran Pameridea roridulae, only(More)
A general allometric scaling model predicts that plant body mass MT will scale as the −4/3 power of plant density N. Here, we show how this model predicts numerous other scaling attributes of plant populations and communities, including annual growth rate GT, standing leaf biomass ML, basal stem diameter D, and aboveand below-ground biomass, MSH and MR.(More)
The idea that flammability has evolved in man) tire-prone communities has been criticised for being group-selectionist. However flammability may enhance inclusive fitness if the resulting tires kill neighbouring less flammable indi\iduals and also open recruitment possibilities. We modelled the evolution ot flammabilits usmg cellular automata to simulate(More)
Karl J. Niklas*, Jeremy J. Midgley and Richard H. Rand Department of Plant Biology, Cornell University, Ithaca, NY USA Department of Botany, University of Cape Town, Cape Town, South Africa Department of Theoretical and Applied Mechanics, Cornell University, Ithaca NY, USA *Correspondence: E-mail: Abstract We show that explicit mathematical(More)
We investigated the fire resistance conferred by bark of seven common tree species in north Australian tropical savannas. We estimated bark thermal conductance and examined the relative importance of bark thickness, density and moisture content for protecting the cambium from lethal fire temperatures. Eucalypt and non-eucalypt species were contrasted,(More)
Postfire resprouting and recruitment from seed are key plant life-history traits that influence population dynamics, community composition and ecosystem function. Species can have one or both of these mechanisms. They confer resilience, which may determine community composition through differential species persistence after fire. To predict ecosystem level(More)