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Gustav Clark

@gustavc123.bsky.social
714 followers 1.9K following 997 posts

Naturalist - plants, insects, molluscs. Not birds, not butterflies. Ex IT, ex chemist, ex many things, but beetle ID will probably keep me fully occupied until I die.. But I do love cutting scrub and fixing fences. UK white cis male he/him trans ally

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Gustav Clark @gustavc123.bsky.social · 05/06/2026
L. cinereoniger? You do get striped forms and the central stripes could be a keel. Alternatively L. maximus with an exceptionally black mantle
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Gustav Clark @gustavc123.bsky.social · 03/06/2026
That is one of a number of options, including no change.
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Gustav Clark @gustavc123.bsky.social · 28/05/2026
This paper is really addressing the case of 'new' sites - brownfield/agricultural. Restoration really has no meaning for these.
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Gustav Clark @gustavc123.bsky.social · 28/05/2026
Not so sure you are right about that. Traditional restoration concentrated on the habitat, rewilding is too often about designing a new habitat to suit some jazzy introduction.
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Gustav Clark @gustavc123.bsky.social · 28/05/2026
Gang Mine and Rose End Meadows are total gems. Reserves like these are source of local animals and plants that allows us to believe Middleton Moor can be naturally restored.
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Reposted by Gustav Clark
gillianfoxcroft.bsky.social @gillianfoxcroft.bsky.social · 12/05/2026
The Mountain Pansies @derbyswildlife.bsky.social Gang Mine are spectacular...mainly yellows, but look out for the purples too Missed @wildflowerhour.bsky.social but will try next time @josmithwild.bsky.social #WildFlowerHour
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Gustav Clark @gustavc123.bsky.social · 28/05/2026
A bit tall for Laburnum
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Gustav Clark @gustavc123.bsky.social · 21/05/2026
Goodbye bracken. This is excellent news. The next question is whether they can get brambles under control
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Gustav Clark @gustavc123.bsky.social · 21/05/2026
Marvellous news. Much cheaper than cattle and they will actively go for bracken rhizomes
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Gustav Clark @gustavc123.bsky.social · 21/05/2026
This is a small revolution. Pigs were the main animals allowed to forage in medieval woodlands, so this a real step towards non-mechanical methodology
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Gustav Clark @gustavc123.bsky.social · 21/05/2026
That's my normal hat. I can poke my head through hawthorn in safety hawthornb
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Gustav Clark @gustavc123.bsky.social · 16/05/2026
Plant recorders are really in a privileged position here. For beetles there won't be a replacement for Duff in my lifetime. There is no single text for bugs, and for ants there is Seifert, covering the whole of northern Europe. What makes it all work is the NBN Atlas which knows the synonyms.
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Gustav Clark @gustavc123.bsky.social · 16/05/2026
(Fortunately) I expect names to change. All my records go in via the BSBI Ddb, which picks up synonyms and out of date nomenclature.
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Gustav Clark @gustavc123.bsky.social · 09/05/2026
Just out, arrived yesterday.
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Gustav Clark @gustavc123.bsky.social · 24/04/2026
Swifts are hard to manage and are already established as native birds, so they do not fit in with a rewilding narrative. They may become eligible for support if their numbers continue to drop.
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Gustav Clark @gustavc123.bsky.social · 17/04/2026
Over the last few years there has been funding to try and get earthworm identification without killing. It can't be done, even experts fail.
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Gustav Clark @gustavc123.bsky.social · 16/04/2026
iNaturalist will get you IDs for plants, birds, mammals and large showy insects. iRecord will give you access to expert verification. You do need a stab at a name and lots of detail. Find a local natural history society and ask for help. Spend your money on books equipment and courses
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Gustav Clark @gustavc123.bsky.social · 11/04/2026
Pigs are the answer to many of our problems, especially bracken.
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Gustav Clark @gustavc123.bsky.social · 11/04/2026
I believe in pigs. They are the best hope against bracken, they will turn over the soil, exposd the buried seed bed. Not sure how they'll do against brambles and raspberry, but we're going to find out.
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Gustav Clark @gustavc123.bsky.social · 07/04/2026
Take the colour filter off the RH picture. I suspect it shows no change, otherwise why do it?
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Gustav Clark @gustavc123.bsky.social · 07/04/2026
They still need to be refined, which is the technology that all the world abandoned except for China
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Gustav Clark @gustavc123.bsky.social · 06/04/2026
The lack of records for Staffs is largely recorder effort. I live in Derb but record in Staffs. But those records peak in the old coalfield area, which gets less effort than the Derwent, Dove and Wye valleys. So there is a real effect there. Leicestershire should match Derb but it is much lower.
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Gustav Clark @gustavc123.bsky.social · 31/03/2026
I trust you. Found one on EBay, it's now with the courier, arrives Saturday.
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Gustav Clark @gustavc123.bsky.social · 30/03/2026
AKA Windflowers
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Gustav Clark @gustavc123.bsky.social · 29/03/2026
And in case you dont know, Normanton is one of the densest parts of Derby, your nearest city.
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Gustav Clark @gustavc123.bsky.social · 29/03/2026
If you live in the middle of Normanton you have city buses getting you to parks, the Derwent, and the actual surrounding country. Get out of your office and test out your claims.
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Gustav Clark @gustavc123.bsky.social · 06/03/2026
I have a battery pack permanently connected. It doubles as a tether forcwhen I drop my phone
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Gustav Clark @gustavc123.bsky.social · 05/03/2026
I've been verifying iRecord and iNaturalist records prior to their transfer the Ddb. These IDs are almost all based on 1 picture, with no text. Its persuaded me that I really must add more pictures to my App records.
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Gustav Clark @gustavc123.bsky.social · 28/02/2026
I got in close to take pictures and found the smell overwhelming. I could say it was an almond tree, but that would be silly.
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Gustav Clark @gustavc123.bsky.social · 21/02/2026
Give it a name, a size, a habitat. Show us what it could be confused with. Otherwise it could be any insect
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Gustav Clark @gustavc123.bsky.social · 20/02/2026
Well written. My feeling is that the public interest aroused by beavers has waned and the lynx, elk and wolf enthusiasts are being treated with disdain.
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Gustav Clark @gustavc123.bsky.social · 07/02/2026
The money and effort going into this could be doing so much good, so many habitats could be saved. But the rewilding marketeers need a new project.
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Gustav Clark @gustavc123.bsky.social · 27/01/2026
Seriously, grass and forbs are what holds soil together. Its the fine fibres that do it. Trees exploit their work, and undermine it when they fall over. But humans love them.
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Gustav Clark @gustavc123.bsky.social · 26/01/2026
That tree has very visibly lost it's grip on the soil that used to support it.
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Gustav Clark @gustavc123.bsky.social · 25/01/2026
And available now, at the bottom of a hedgerow near you.
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Gustav Clark @gustavc123.bsky.social · 21/01/2026
There is a difference though Xi is always fully focused on China and promoting it's interests. Trump is fully focused on himself. It means that China can and will negotiate, and.tgstvthey k ow that trust is the bedrock of future greatness.
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Gustav Clark @gustavc123.bsky.social · 10/01/2026
It's working to the extent that it now says it is broken. Until Monday, indeed.
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Gustav Clark @gustavc123.bsky.social · 10/01/2026
I just reread this. I'm reorganising 5 years of specimens, and the number of errors is a shock. Mostly locations, but several just plainly misidentified.
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Gustav Clark @gustavc123.bsky.social · 10/01/2026
Does anyone know what's happening with iRecord. Unable log in from last night (now 08:30 on 10/01/2026)
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Gustav Clark @gustavc123.bsky.social · 10/01/2026
But how did you get that picture. Epigynes always appear as a ge eral fuzz with no contrast or definite edges.
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Gustav Clark @gustavc123.bsky.social · 23/12/2025
Be courageous! There's more money in rewilding than conservation. Stay on the bandwagon.
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Gustav Clark @gustavc123.bsky.social · 13/12/2025
I read the map as showing that expansion is only likely in certain directions and not others. I have no problem with that, if we want an homogeneous world we should plant spruce
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Gustav Clark @gustavc123.bsky.social · 13/12/2025
At last! Haven't delved in yet but the production is marvellous.
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Gustav Clark @gustavc123.bsky.social · 31/10/2025
The Egrets and the Red Kite returned with continual protection and intervention. Pine Marten will do the same What interests me is the way the Ravens have repopulated England, with no human support at all. Can we hope that Polecats one manage that same feat.
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Gustav Clark @gustavc123.bsky.social · 28/10/2025
Not a total surprise. This is a paper that I must read in full
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Gustav Clark @gustavc123.bsky.social · 12/10/2025
Got any chips for sale?
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Gustav Clark @gustavc123.bsky.social · 30/09/2025
Good to see our people getting out there
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Gustav Clark @gustavc123.bsky.social · 25/09/2025
Then I look at a grain of sand and wonder --- are you a real example of this purposeful universe
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Gustav Clark @gustavc123.bsky.social · 25/09/2025
Good work. I'm surveying dung beetles in the UK and cattle dominate everything. I've been surprised as to scarcity of records, considering the ease of spotting their very concentrated habitats
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Gustav Clark @gustavc123.bsky.social · 20/09/2025
But, we do know of many extinctions. What has been the impact of those? That should be the starting point for assessing possible extinction in the future. Why should anyone accept a broad-brush assertion of risk with no evidence to back it up?
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