Kilian Perrelet
@kperrelet.bsky.social
PhD student at @eawag.bsky.social, @wslresearch.bsky.social, @florianaltermatt.bsky.social
Working on urban biodiversity, food webs, and blue-green infrastructure using eDNA
Working on urban biodiversity, food webs, and blue-green infrastructure using eDNA
Huge thanks to the co-authors: Marco Moretti, Océane Inglard, @florianaltermatt.bsky.social, and @laurenmcook.bsky.social
And to the #BGB initiative @eawag.bsky.social @wslresearch.bsky.social
6/6
And to the #BGB initiative @eawag.bsky.social @wslresearch.bsky.social
6/6
July 24, 2025 at 2:46 PM
Huge thanks to the co-authors: Marco Moretti, Océane Inglard, @florianaltermatt.bsky.social, and @laurenmcook.bsky.social
And to the #BGB initiative @eawag.bsky.social @wslresearch.bsky.social
6/6
And to the #BGB initiative @eawag.bsky.social @wslresearch.bsky.social
6/6
The good news: small design changes = big ecological impact. In particular, let's favor...
✅ Deeper substrate
✅ Organic-rich soils
✅ Higher vegetation cover
... to benefit species with varying dispersal abilities! 🦋🐞🦗
5/6
✅ Deeper substrate
✅ Organic-rich soils
✅ Higher vegetation cover
... to benefit species with varying dispersal abilities! 🦋🐞🦗
5/6
July 24, 2025 at 2:46 PM
The good news: small design changes = big ecological impact. In particular, let's favor...
✅ Deeper substrate
✅ Organic-rich soils
✅ Higher vegetation cover
... to benefit species with varying dispersal abilities! 🦋🐞🦗
5/6
✅ Deeper substrate
✅ Organic-rich soils
✅ Higher vegetation cover
... to benefit species with varying dispersal abilities! 🦋🐞🦗
5/6
As expected, flying invertebrates 🦋🐝 thrived on green roofs. But even ground-dwelling species 🕷️ made it up there!
However, species that live within the soil (e.g., springtails) didn’t do as well, probably due their limited dispersal and challenging environmental conditions ☀️
4/6
However, species that live within the soil (e.g., springtails) didn’t do as well, probably due their limited dispersal and challenging environmental conditions ☀️
4/6
July 24, 2025 at 2:46 PM
As expected, flying invertebrates 🦋🐝 thrived on green roofs. But even ground-dwelling species 🕷️ made it up there!
However, species that live within the soil (e.g., springtails) didn’t do as well, probably due their limited dispersal and challenging environmental conditions ☀️
4/6
However, species that live within the soil (e.g., springtails) didn’t do as well, probably due their limited dispersal and challenging environmental conditions ☀️
4/6
Surprising finding: very few species were shared between roofs and ground-level sites.
📍 Spatial isolation didn’t matter much.
🏙️ Instead, green roofs hosted distinct communities, though a bit less species-rich overall.
3/6
📍 Spatial isolation didn’t matter much.
🏙️ Instead, green roofs hosted distinct communities, though a bit less species-rich overall.
3/6
July 24, 2025 at 2:46 PM
Surprising finding: very few species were shared between roofs and ground-level sites.
📍 Spatial isolation didn’t matter much.
🏙️ Instead, green roofs hosted distinct communities, though a bit less species-rich overall.
3/6
📍 Spatial isolation didn’t matter much.
🏙️ Instead, green roofs hosted distinct communities, though a bit less species-rich overall.
3/6
We collected soil samples from 50+ pairs of green roofs and ground-level green spaces across Zurich, Switzerland.
Using eDNA metabarcoding 🧬, we identified invertebrates with different dispersal abilities to see who’s living where.
2/6
Using eDNA metabarcoding 🧬, we identified invertebrates with different dispersal abilities to see who’s living where.
2/6
July 24, 2025 at 2:46 PM
We collected soil samples from 50+ pairs of green roofs and ground-level green spaces across Zurich, Switzerland.
Using eDNA metabarcoding 🧬, we identified invertebrates with different dispersal abilities to see who’s living where.
2/6
Using eDNA metabarcoding 🧬, we identified invertebrates with different dispersal abilities to see who’s living where.
2/6
A collaboration between @eawag.bsky.social and @wslresearch.bsky.social with @laurenmcook.bsky.social, @adietzel.bsky.social & @florianaltermatt.bsky.social!
April 22, 2025 at 1:17 PM
A collaboration between @eawag.bsky.social and @wslresearch.bsky.social with @laurenmcook.bsky.social, @adietzel.bsky.social & @florianaltermatt.bsky.social!
Thank you so much! It was great to meet you!
December 13, 2024 at 11:49 AM
Thank you so much! It was great to meet you!
Thanks a lot! Could you eventually add me?
December 12, 2024 at 1:48 PM
Thanks a lot! Could you eventually add me?