Author Archives: richard telford

About richard telford

Ecologist with interests in quantitative methods and palaeoenvironments

Funky ordination plots with ggvegan

Yesterday, I tweeted a photo of a ordination I plotted with ggvegan, and thought I should show how I made it. ggvegan and ggplot make it easy to make complex ordination plots — Richard Telford (@richardjtelford) April 10, 2019 … Continue reading

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Sunspots and raindrops

It is time, as the walrus said, to talk about another paper reporting an effect of solar variability on the Earth’s climate. Laurenz et al. (2019) correlate European country-scale precipitation data from CRU with the number of sunspots, a proxy … Continue reading

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Autocorrelation in the testate amoeba calibration set

Amesbury et al examine the autocorrelation in their huge calibration set. I thought I would do the same, increasing the resolution of the analysis to get a better handle on what is going on. This is an RNE plot. It … Continue reading

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Testing testate amoeba: some comments on Amesbury et al (2018)

Today, I have been reading and thinking about a new paper presenting a huge testate-amoeba calibration set for reconstructing water table depth in bogs (Amesbury et al 2018). This calibration set, with almost 2000 samples, is the synthesis of many … Continue reading

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Introducing ggpalaeo

I’ve put some code I used for plotting figures for my soon-to-be-resubmitted manuscript into a package because I thought it might be useful to others. The main use of ggpalaeo is to make ggplot2 plots of transfer function diagnostics from … Continue reading

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The elevation of Lake Tilo

For my PhD, I studied the palaeolimnology of two lakes in the Ethiopian rift valley, using diatoms to reconstruct changes in the water chemistry of Lake Awassa, an oligosaline caldera lake which retains its low salinity despite having no effluent … Continue reading

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Conference abstract deadlines

“I love deadlines. I love the whooshing noise they make as they go by.” Douglas Adams When I go to a conference, I want to present my most recent relevant work. But often the deadline for abstract submission is months … Continue reading

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