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Posts by Johannes Merz

yes exactly, the green is the female, the purple/red the male one

1 day ago 0 0 0 0
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Sphaerocarpos cf europaeus, a strange looking liverwort growing on bare disturbed soil in extensively managed arable fields, endangered across Europe ๐ŸŒฟ

2 days ago 51 10 1 0
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spring in Leipzigs riparian forest ๐ŸŒท

1 month ago 3 0 0 0
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Pesticide residues alter taxonomic and functional biodiversity in soils Nature - A wide survey of pesticide effects on soil biodiversity across 373 sites in Europe reveals that pesticide residues occur in 70% of sites and have major effects on soil biodiversity and...

Pesticide residues found to be the second strongest driver of soil biodiversity (after soil properties) across European ecosystems! ๐ŸŒ๐ŸŒ๐Ÿชฑ๐Ÿฆ ๐Ÿ„ rdcu.be/e1cOL

2 months ago 19 9 0 0
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Cladonia stellaris in the snow โ„๏ธ

2 months ago 17 4 0 0
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The biodiversity, genomics, ecology and evolution of mushroom-forming fungi Nature Reviews Biodiversity, Published online: 02 December 2025; doi:10.1038/s44358-025-00107-zMushroom-forming fungi have along evolutionary history and a suite of important ecological roles. This Review highlights advances in understanding of Agaricomycetes evolution and ecology driven by genomic research.

New online! The biodiversity, genomics, ecology and evolution of mushroom-forming fungi

4 months ago 20 5 1 1

We studied vegetation recovery and peat depth in temperate fens drained for forestry and rewetted up to 38 years ago. Peat layers increased over time, vegetation became more similar to near-natural fens, especially in the first 10 years, but never fully reached near-natural quality ๐ŸŒฟ

3 months ago 1 0 0 0
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Preprint available :)

Small-scale fen restoration brings back key species and ecosystem functions ๐ŸŒฟ

3 months ago 2 0 1 0

Small-scale fen restoration brings back key species and ecosystem functions www.biorxiv.org/content/10.64898/2026.01...

3 months ago 4 2 0 1

I think those are the Gemmules, a strategy to survive winter

3 months ago 1 0 1 0
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Did you know there are freshwater sponges in Germany?
Spongilla lancustris is a demosponge growing in shallow, clear and clean ponds, lakes etc. it becomes dormant in winter and can survive dry periods!

seen today in a dry pond in northern bavaria :)

3 months ago 16 2 2 0

How to measure seed longevity in storage when comparing accessions or species? We looked in detail at the most widely used measure (p50) and found out that it is... suboptimal at best. We highlight alternatives. @gfoesoc.bsky.social @unimarburg.bsky.social

4 months ago 12 6 1 0

Yes you should!

4 months ago 0 0 0 0
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Restored open pit coal mining site near Leipzig, quite interesting pioneer habitat :)

4 months ago 6 0 2 0
Hedlundia pulchra

Hedlundia pulchra

Karpatiosorbus franconica

Karpatiosorbus franconica

Karpatiosorbus franconica

Karpatiosorbus franconica

Some white beams endemic to franconia, northern bavaria :)

Karpatiosorbus franconica and Hedlundia pulchra

4 months ago 3 0 0 0
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โ„๏ธ

4 months ago 8 0 0 0
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Happy to finally share this important article on barriers in ecology led by @canobarbacil.bsky.social in the journal Frontiers in Ecology & the Environment. The idea for this paper originated at the nice #ANdiNA workshop in Spain a couple of years ago.

5 months ago 14 7 0 0
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Diverse forests are more resistant to climate change

New study led by @lsachsenmaier.bsky.social @agwirthweigelt.bsky.social shows: forest stands made up of tree species with different water-use strategies (not just many species) grow better in drought years. #iDivResearch #Biodiversity
www.idiv.de/diverse-fore...

5 months ago 29 14 2 3

true. the windows.

5 months ago 1 0 0 0

frankfurt?

5 months ago 0 0 1 0
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Bryophytes hold a larger gene family space than vascular plants - Nature Genetics A super-pangenome analysis incorporating 123 newly sequenced bryophyte genomes reveals that bryophytes exhibit a larger number of unique and lineage-specific gene families than vascular plants.

๐Ÿ“ข New publication ' #Bryophytes hold a larger gene family space than vascular plants' by Shanshan Dong et al. in @natgenet.nature.com ๐Ÿงฌ๐Ÿงช

doi.org/10.1038/s415...

#evolution #pangenome

6 months ago 30 7 1 1

Its Sphagnum capillifolium :) on a very sun exposed forest path

5 months ago 1 0 1 0
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๐Ÿ๐Ÿ‚

6 months ago 26 1 1 0
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some fancy Ascophyllum๐ŸŒฟ

6 months ago 4 0 0 0
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Illustration of a branch of Betula glandulosa (Resin birch). Illustration by Alberto S. Ballesteros (@asbillustration.bsky.social).

Illustration of a branch of Betula glandulosa (Resin birch). Illustration by Alberto S. Ballesteros (@asbillustration.bsky.social).

๐ŸŒฒ Boreal-tundra species drive Arctic plant borealization ๐ŸŒฒ

Our new study in #EcologyLetters quantifies tundra plant borealization, assesses its main drivers and identifies the species & traits contributing to borealization.

doi.org/10.1111/ele....

๐Ÿงต (1/6) ๐ŸŒ๐Ÿงช๐ŸŒฑ๐ŸŒ

6 months ago 64 24 2 3
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Sphagnum fallax in a mesotrophic sloping fen in central Germany ๐ŸŒฟ

7 months ago 61 13 1 1
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Its sometimes a narrow line between a "garden" and a protected boulder field with glacial relict species ;)

7 months ago 8 1 0 0

where did you get those purrr ones from ๐Ÿ˜

7 months ago 0 0 0 0
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Sphagnum girgensohnii in an alder carr in southern finland :)

7 months ago 18 2 0 0
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A collapsing Palsa in northern Finland; seen this week.

Palsas are peat-covered hills, often a few meters high, that contains a core of permafrost. They are only found in areas of discontinuous permafrost ๐ŸงŠ,

They will be likely gone soon due to climate change ๐ŸŒฟ
nordia.journal.fi/article/view...

7 months ago 4 0 0 0