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Number of projects found: 20

Origins of interspecies variation in mammalian muscle metabolic enzymes


Do the transcriptional mechanisms that control an individual's mitochondrial content, PGC1α (peroxisome proliferator-activated receptor γ coactivator-1α) and NRF1 (nuclear respiratory factor-1), also cause differences between species? We explored the determinants of cytochrome c oxidase (COX) activities in muscles from 12...

Owner and floater red-winged blackbirds: determinants of status


We used sequential removal experiments to test whether the resource-holding potential (RHP) of territory “owner” red-winged blackbirds, Agelaius phoeniceus, was superior to that of their first replacements (“shallow floaters”) and subsequent replacements (“deep floaters”). Among the removals were secondyear...

On succession in a saxicolous lichen community


The lichen flora was sampled at each of the five sites on a near-vertical gneiss rock face. The sites were ranked according to the degree of weathering of the rock surface and were taken to represent different stages in a...

On the occurrence of free sugars in lake sediment extracts


A semi‐quantitative method is described for the determination of free sugars in lake sediments. The method involves extraction with 70% ethanol, deionization with ion exchange resins, and separation and estimation of the sugars on paper chromatograms. The following sugars were...