Oregon Maple 2017 SEM images revisited

oregan maple c_s twig003 hi res

Revisiting the wonderful images Clodagh Dooley took on the Scanning Electron Microscope in the Advanced Microscopy Lab, Trinity College Dublin during the summer of 2017.

Since the collapse of the Oregon Maple on the 1st of July 2018 I have been revisiting the work completed by the Trinity College Trees Team on this tree during 2017.

Clodagh Dooley took some great images, which later inspired the artwork created by Hassett and suspended in the Oregon Maple during October 2017.  See image above.

To follow a brief recap of some of these images taken of pollen grains (see slideshow bellow and two images of bark lichen which follow the slide show). 

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Science Notes: Autumn Cherry Blossom

SCIENCE NOTES: AUTUMN CHERRY BLOSSOM

These scanning electron microscope pictures show a tiny part of a flower from the autumn-flowering cherry tree. It’s one of the stamens: the small round shapes are pollen grains.

Autumn Cherry Flowers fig1.jpg

Pollen carries the reproductive cells (gametes) produced in the male parts of flowering plants. It may be annoying to those of us who suffer from hay fever and other allergic reactions to airbourne pollen, but it’s vital for many plants to spread pollen around so that the male cells will encounter female cells in the pistils of other plants.

There are many different types of pollen, and the size and shape of pollen grains varies a lot from plant to plant, so the microscopic analysis of pollen can be very useful in forensics and archaeology. This SEM image shows some of the weird and wonderful shapes of different pollens (the colours are artificial – SEM doesn’t do colour but the colour can be added later just for fun):

Autumn Cherry Flowers fig2

Source: Dartmouth Electron Microscope Facility, Dartmouth College [Public domain], via Wikimedia Commons

Bees and other insects eat pollen: for them it’s a vital food source. Lately some people have been selling bee pollen for human consumption. It probably won’t do you any harm (unless you’re allergic to it of course, in which case it might kill you) but there’s no scientific evidence that it will do you any good either, so I’m going to keep away from it.

David