Steve Ormerod

@steveormerod.bsky.social

Freshwater ecology, global change, nature conservation; env policy; VP @rspb.bsky.social; Former Dep Chair @natreswales.bsky.social & Joint Committee @jncc.bsky.social Bumbling acoustic guitarist https://profiles.cardiff.ac.uk/staff/ormerod

Heatwaves are warming our rivers too. Since the 1980s: 👉 Compound air–river heatwaves have tripled 👉 River heatwaves are 114% more frequent, 148% longer, and 95% more intense 👉 By 2100, under high emissions, 98.5% of river and atmospherric heatwaves could coincide. www.nature.com/articles/s41...

Threefold increase in atmospheric–riverine compound heatwaves under climate change - Nature Geoscience

Co-occurring atmospheric and river heatwaves have tripled since the 1980s across the USA and Europe, and are projected to become the norm by 2100, according to model simulations.

nature.com

The first Jersey Tiger was recorded in Wales in August 2008 but ‘Moths of Glamorgan’ in 2014 predicted it would become established. My 1st was in July 2018, and this is the 5th this week Euplagia - beautiful slanted stripes on the forewing quadripunctaria - 4 spots on the hind wing #mothsmatter

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Chinese Character: the famous bird-scat mimic. V distinct among the other hook-tips. Cilix glaucata: from the glaucous, sea-green-blue colour. The mark on the wing is said to resemble the Chinese character for ‘mountain’. So, a moth that carries a mountain on its forewings. #MothsMatter

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First Dot Moth of the year in our Cardiff garden. Melanchra - a black complexion persicariae - from one of the larval food plants. I have a particular attachment to Dot Moths as they were among my first ever catch here - 14 years ago this week #MothsMatter

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Single-dotted Wave: a regular but seldom stays for a pic Idaea dimidiata From Mt Ida - where the Gods/Goddesses watched the *Trojan Wars, referencing the ethereal qualities of the whole genus dimidiata: the pattern of marks divides the wing in two #MothsMatter *the aftermath is in cinemas now!

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Vapourer. Considered to be uncommon in Glamorgan, and only trapped twice in the garden before this week. Orgyia antiqua. Orgyia implies outstretched arms - as in this image. Not sure why Linnaeus used ‘antiqua’ - meaning ancient or old. Perhaps a comparison with O. recens - the Scarce Vapourer?

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While we cook in Europe, it's worth remembering that this isn't just a European story. Across the Arctic and other high-latitude regions, temperature anomalies are reaching extraordinary levels, with some areas forecast to be >10–20°C above historical averages. The climate signal is global.

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Oak Nycteoline - the first in the garden in 14 years of trapping - conveniently harmonising with my iPhone case. Nycteola revayana: ‘Nux/Nyx’ = night. Revay was a French entomologist. Thinly distributed across Glamorgan and linked to Oak woodland. #MothsMatter

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Sensitive content warning. The grim sight of many dead fish of several species in my local stream today - Cardiff’s Roath Brook. This is the tragic reality of a serious pollution incident. I know that Natural Resources Wales have been on site and are investigating the possible source.

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