Zones of photosynthetic potential on Mars and the early Earth
Ultraviolet radiation is more damaging on the surface of Mars than on Earth because of the lack of an ozone shield. We investigated micro-habitats in which UV radiation could be […]
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Read more of: Zones of photosynthetic potential on Mars and the early Earth
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A Planetary Park system for Mars
Read more of: A Planetary Park system for MarsThe increasing robotic exploration of Mars and eventual human exploration and settlement of that planet threatens to have a significant environmental impact on scientifically important sites and sites of natural […]
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Coupling of climate change and biotic UV exposure through changing snow-ice covers in terrestrial habitats
Read more of: Coupling of climate change and biotic UV exposure through changing snow-ice covers in terrestrial habitatsDuring the spring, when ozone depletion at the polar regions is at its maximum and consequently the environmental UV exposure is potentially high, many terrestrial communities are covered in snow […]
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The uses of Martian ice
Read more of: The uses of Martian iceIn this paper I explore potential relationships between humans and Martian polar ices. Martian ices contain within them multimillion year histories of atmospheric, geological and maybe even biological processes. Polar […]
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The rights of microbes
Read more of: The rights of microbesOver the last forty years, the circle of organisms thought worthy of inclusion within an ethical framework has expanded markedly, in large part in response to Aldo Leopold’s ‘land ethic’. […]
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Impact-shocked rocks – insights into archean and extraterrestrial microbial habitats (and sites for prebiotic chemistry?)
Read more of: Impact-shocked rocks – insights into archean and extraterrestrial microbial habitats (and sites for prebiotic chemistry?)Impact-shocked gneiss shocked to greater than 10 GPa in the Haughton impact structure in the Canadian High Arctic has an approximately 25-times greater pore surface area than unshocked rocks. These […]
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Growth in the limpet Nacella concinna from contrasting sites in Antarctica
Read more of: Growth in the limpet Nacella concinna from contrasting sites in AntarcticaAnnual shell growth was determined by mark and recapture in the limpet Nacella concinna (Strebel 1908) at two contrasting sites in Antarctica. At Signy Island, 60degreesS, growth was moderately fast, […]
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Putting animals in their place. [Book review] Environmental physiology of animals, 2nd ed., by P. Willmer, G. Stone and I. Johnston. Blackwell Scientific, 2004
Read more of: Putting animals in their place. [Book review] Environmental physiology of animals, 2nd ed., by P. Willmer, G. Stone and I. Johnston. Blackwell Scientific, 2004 -
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Is there a Universal Temperature Dependence of metabolism?
Read more of: Is there a Universal Temperature Dependence of metabolism?In a challenging and provocative paper Gillooly et al. (2001) have proposed that the metabolism of all organisms can be described by a single equation, * Q = b0M3/4e−E/kT, where […]
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