Johannes Merz

some fancy Ascophyllum🌿

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

🌲 Boreal-tundra species drive Arctic plant borealization 🌲

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....

🧵 (1/6) 🌐🧪🌱🌍

Sphagnum fallax in a mesotrophic sloping fen in central Germany 🌿

Its sometimes a narrow line between a "garden" and a protected boulder field with glacial relict species ;)

where did you get those purrr ones from 😍

Sphagnum girgensohnii in an alder carr in southern finland :)

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 🧊,

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

Botrychium boreale in coastal dune vegetation, subarctic norway 🌿🌊

Tundra office 🌿🍁

Have a nice weekend!

Sphagnum cuspidatum 🌿

Sphagnum divinum at its best

autom colors starting to sneak in 🍁🍂

Gymnomitrion species from the arctic tundra :)

G. concinnatum, G. corallioides (with sporophyte), G. brevissimum

its a fascinating book :))

Have a nice weekend!

Sphagnum tumidulum :)

what water/aquarell colors do you use?

some biodiv from the garden :)

small actions for local biodiversity :)

our family´s garden got the award "bird friendly" by the Bavarian State Office for the Environment & the association for bird protection 🐦🌿@‪lbv-bayern.bsky.social‬

we implemented artificial nesting sites, many unmanaged corners, various native plants, etc 🥬

die fliegen wenigstens nicht so schnell weg

Lendemeriella tornoensis - a lichen parasting on mosses in subarctic snowbeds :) As far as I know those are the only pictures of this species existing on the internet.

I took those during an excursion to Gistuskáidi late snow areas in subarctic Lapland, thx to Inka Kuusisto for showing :)

Sleepin´ beeauty

Ouch.

“If we plan restoration targets to match future climatic conditions and consider state transitions of currently natural ecosystems due to climate change, the potential for natural climate solutions related to ecosystem restoration is close to zero.”

Qvidja Bioblitz, really nice and diverse cultural landscape around an old castle. Even Apollo butterflys there!

#Qvidja

It's the #WorldBogDay!
Let's protect & restore #peatlands.

Have a nice weekend,

Sphagnum tenellum :)

It doesn't take a scientist or forester to see that North America's forests are changing rapidly, sometimes in ways never seen before. For this #ForestFriday let's review some terms being used to describe these changes, & take a tour thru America's new 'Forests of the Anthropocene'. 🧵

When you BLAST plant but fungi comes out

there seems to be Antarctic Yeast (Sporobolomyces roseus) on the plant sample ?? :))

dubia female

rubicunda

dubia male

pectoralis

Some mire specialist dragonflys :)

Leucorrhinia dubia (m and f)
Leucorrhinia pectoralis
Leucorrhinia rubicunda

Valdensia heterodoxa, a blueberry pathogen currently spreading over Finland - strange species with a single, ultra large Conidia!

The fungi likely gets more common with warmer climate, less precipitation and higher nutrient load in the environment.

In the national news: yle.fi/a/74-20172542