This community contains the ePrints and eTheses of Biological and Environmental Sciences staff and students.
As the Arctic warms, vegetation is responding, and satellite measures indicate widespread greening at high latitudes. This ‘greening of the Arctic’ is among the world’s most important large-scale ecological responses to global climate change. However, a consensus is emerging that the underlying causes and future dynamics of so-called Arctic greening and browning trends are more complex, variable and inherently scale-dependent than previously thought. Here we summarize the complexities of obse...
The majority of variation in six traits critical to the growth, survival and reproduction of plant species is thought to be organised along just two dimensions, corresponding to strategies of plant size and resource acquisition. However, it is unknown whether global plant trait relationships extend to climatic extremes, and if these interspecific relationships are confounded by trait variation within species. We test whether trait relationships extend to the cold extremes of life on Earth usi...
Permafrost soils contain c. 1980 Pg carbon (C; Schuur et al., 2015), more than twice the size of the atmospheric C pool. Thawing permafrost, subsequent changes in hydrological conditions and resulting microbial decomposition of previously frozen organic C is one of the most significant potential feedbacks from terrestrial ecosystems to the atmosphere in a changing climate (Schuur et al., 2008; Hugelius et al., 2012; Hope & Schaefer, 2016): such changes are now occurring at a dramatic pace ove...
First paragraph: This thesis examines, in the context of the Scottish hill sheep industry, the effectiveness of worm control measures within the different husbandry systems using the anthelmintic tetramisole. This involves both a biological and an economic evaluation of the effects of the anthelmintic. The large volume of earlier work on anthelmintics has concentrated on biological evaluation almost to the complete neglect of economic considerations. The author believes that the failure to u...
Polypore mushrooms have been used medicinally for thousands of years. Agarikon (Fomitopsis officinalis) is a medicinal polypore mushroom containing a host of pharmacologically active compounds that beneficially affect human health. Agarikon is known for its capability of producing various biologically active compounds with medical applications such as antiviral, antibacterial, anticancer, and anti-inflammatory agents. This review describes the importance of medicinal mushrooms, with a specifi...
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