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David Kleijn @davidkleijn.bsky.social · 11h

Fall ❤️

David Kleijn @davidkleijn.bsky.social · 2d

Great new study by Reinier de Vries (and others), who caught 170,000 individuals and identified 27,200 of them to species level. Makes you understand why few studies have done this so far.

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David Kleijn @davidkleijn.bsky.social · 2d

Intensifying grassland management leads to massive loss of arthropod species. However, total arthropod numbers remain more or less stable. Many losers, few winners. doi.org/10.1016/j.bi...

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Reposted by David Kleijn

Journal of Applied Ecology @jappliedecology.bsky.social · 4d

Mixed plant and arthropod biodiversity responses to solar park establishment on former agricultural lands 🦋

Suggests that, while biodiversity can increase in solar parks post-conversion compared to previous land use, not all taxonomic groups benefit from this change 🌏🧪

doi.org/10.1111/1365...

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Reposted by David Kleijn

Carlos M Herrera @cmhmaliani.bsky.social · 11d

A welcome research comparing the results of pollinator monitoring obtained by humans (so-called 'pollination ecologists') and concurrent time-lapse videos (so-called 'the future for lazy' 😜). Take a quick glance at this figure from the paper and judge for yourself

doi.org/10.1002/aps3...

Four graphs comparing species richness at various taxonomic levels

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Reposted by David Kleijn

James Bullock @jmbecologist.bsky.social · 15d

Politics is complicated

Business is complicated

Finance is complicated

So why do they all expect ecologists to come up with simple actions & metrics for nature recovery

Could they be spinning us a line?

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David Kleijn @davidkleijn.bsky.social · 15d

Finished data collection for this paper 19 years ago 🫣

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David Kleijn @davidkleijn.bsky.social · 15d

Important to promote farmland wildlife, but this paper in Science, (doi.org/10.1126/scie...) published 2 days ago, highlights that in intensive agricultural landscapes we first need MORE habitat before we put effort in enhancing quality

Home Page

doi.org

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David Kleijn @davidkleijn.bsky.social · 15d

Higher cutting frequency can restore habitat quality on farmland. doi.org/10.1111/1365...

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Reposted by David Kleijn

Thijs Fijen @thijsfijen.bsky.social · 19d

Dutch solar parks approach pollinator & plant biodiversity levels of extensive grasslands, but only on the surface not covered by panels. Soil-emergent arthropods and butterflies lack behind. Proud of Timea for leading besjournals.onlinelibrary.wiley.com/doi/10.1111/...
@jappliedecology.bsky.social

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Reposted by David Kleijn

Journal of Applied Ecology @jappliedecology.bsky.social · 17d

Using total abundance as a proxy for wild bee species richness: A practical tool for non-experts 🐝🌏

Proposes that employing an effective proxy for non-experts could enhance the evaluation of many local and regional conservation initiatives 📑🧪

🔗 doi.org/10.1111/1365...

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Reposted by David Kleijn

Trouw @trouw.nl · 17d

Veel meer natuur nodig om nuttige insecten voor de landbouw te behouden

Regels van de EU die tot herstel van de insectenpopulatie moeten leiden zijn ontoereikend, blijkt uit Wagenings onderzoek dat donderdag gepubliceerd is in het wetenschappelijke tijdschrift Science.

www.trouw.nl

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Reposted by David Kleijn

NatureTodayNL @naturetodaynl.bsky.social · 17d

Met 10 procent leefgebied herstellen bestuivers niet

Bijen, hommels en vlinders hebben te weinig natuur om zich heen om te overleven. Uit recent, in Science gepubliceerd, onderzoek onder leiding van een onderzoeksteam van Wageningen University & Research blijkt dat deze insecten veel meer ruimte nodig hebben om te herstellen dan nu in EU-richtlijnen is vastgelegd. Ook blijkt de kwaliteit van die ruimte belangrijk om mee te nemen.

dlvr.it

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Reposted by David Kleijn

Thijs Fijen @thijsfijen.bsky.social · 17d

We need much more semi-natural habitat (6-37%, depending on species group) in agricultural landscapes to effectively conserve pollinators. Large collaborative synthesis study looking at 59 studies in 1250 landscapes from 19 countries now published in Science www.science.org/doi/10.1126/...

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David Kleijn @davidkleijn.bsky.social · Jun 21

Just because it is so beautiful. Megachile laechella. Rare in the Netherlands, but locally abundant in the dunes of Terschelling. The Dutch name 'zilveren fluitje' means silver whistle, after the high tone it makes while flying and the colour of.., well just look at it.

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David Kleijn @davidkleijn.bsky.social · Jun 21

Yes, we want to know at what distance plant populations become reproductively isolated. And whether, restoring patches of wildflowers reduces isolation or actually worsens it (pollen competition). Both are possible.

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David Kleijn @davidkleijn.bsky.social · Jun 19

They seem to be a lot less shy on Terschelling (NL). Took this one yesterday with my phone.

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David Kleijn @davidkleijn.bsky.social · May 23

Bees and beers. The typical use of fridges by pollinator ecologists during field season.

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David Kleijn @davidkleijn.bsky.social · May 23

In another project restpoll.bsky.social we investigate whether flower plantings can improve pollen dispersal between subpopulations. Scientists in action.

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David Kleijn @davidkleijn.bsky.social · May 23

What are the consequences of pollinator decline for wild plants? Here we try to find out in @valor-project.eu. Interesting observations. I never see Centaurea jacea flowers with pollen. But keep the pollinators away and the flowers are dusted white. Very popular species.

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Reposted by David Kleijn

Amelia Hood @milliehood.bsky.social · May 9

Excited to be presenting results from the SHOWCASE project and Agroforestry Group this month!

Our farm trials across England have shown cover crops can increase earthworms by 65% in the following cash crops! AND agroforestry promotes worms too, especially in drought years 😎

Hope to see you there!🌾

Jake Freestone @no1farmerjake.bsky.social · May 5

We’re delighted to host The Green Farm Collective Regen Farming Conf #GFC25 @ Overbury this year the theme is ‘Soil to Slice’ 🌾🐑🐖🍞🥪🍕

Flier for a Regenerative Farming Conference, hosted at Overbury in Worcestershire and organised by The Green Farm Collective. Speakers include David Purdy, Tim Parton, Rude Wade, Millie Hood, Gloria Mazzer, Matthew Adams and Sarah Dusgate. Exploring how we can improve soil and human health through growing better crops and livestock

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Reposted by David Kleijn

Graham Appleton @wadertales.bsky.social · Apr 21

... (reserve-equivalent) enhancement initiatives, supported by one-to-one advice, within or close to existing reserves."
Here's an example of this working for waders in eastern England, spear-headed by the much-missed Mark Smart:
wadertales.wordpress.com/2019/06/14/m...
#ConservationScience🌍

Managing water for waders

Your task, should you choose to accept it, is to turn farmland into a haven for breeding waders. The only tools you have at your disposal are tractors and cows and we will give you permission to pu…

wadertales.wordpress.com

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Reposted by David Kleijn

Melissa & Chris Bruntlett @modacitylife.com · Apr 20

The geveltuin (“facade garden”) policy is found in most Dutch municipalities, as here in Delft. Provided they meet a set of requirements, including preserving footpath width, residents are encouraged to remove paving stones in front of their property and replace them with greenery. No permit needed.

A brick residential street in Delft lined with trees, benches, bike parking, and low-rise brick and wooden buildings. The first storey of many of these buildings is covered with climbing plants and flowers.

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Reposted by David Kleijn

Thijs Fijen @thijsfijen.bsky.social · Apr 13

Doing science biodiversity is great, but the impact is usually not very tangible. Together with citizen cooperative Land van Ons (@landvanons.bsky.social) we planted 300 meter of native hedgerow last December, and installed nest boxes. Today, I jumped of joy because the kestrel box is occupied!

A young planted hedgerow with installed next boxes on wooden poles, and in the background a long pole with a kestrel next box installed. The nest box has two common kestrels sitting in it.

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David Kleijn @davidkleijn.bsky.social · Apr 7

Our field site for the pollination study in the Horizon Europe VALOR project. A bit jealous of the PhD student who gets to spend a couple of months there 🤨

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