Pekka Niittynen

793 Followers
359 Following
70 Posts

Scientist | Arctic ecosystems & plants | snow & remote sensing | Mountain lover & biogeographer

| #Arctic | #geography | #biogeography | #snow | #RemoteSensing | #plants | #scicomm | #microclimate | #SDM | #botany | #ecology | #Finland | #rstats |

Google Scholarhttps://scholar.google.com/citations?user=lZAM1WMAAAAJ&hl=fi&authuser=1
Githubhttps://github.com/poniitty

Hey, fellow ecologists but especially #soil scientists! A complete novice asking: is there a field-based method to measure the approximate age profile of soil organic #carbon E.g., estimate how much is input from very recent years vs. decades vs. hundreds years ago? In a soil where material keeps mixing, so no clear profiles that could help. I have tried to read the literature but not sure I have gained a lot so far?

Please, help me to link with the people who know these stuff πŸ™

Hey, fellow ecologists but especially #soil scientists! A complete novice asking: is there a field-based method to measure the approximate age profile of soil organic #carbon E.g., estimate how much is input from very recent years vs. decades vs. hundreds years ago? In a soil where material keeps mixing, so no clear profiles that could help. I have tried to read the literature but not sure I have gained a lot so far?

Please, help me to link with the people who know these stuff πŸ™

Currently on a one month visit and field work in the Drakensberg, Lesotho 🌸 Collaboration with Peter C. le Roux #Geodiversity, #biodiversity and #microclimate πŸ”οΈπŸŒΊπŸŒ‘οΈ

7/
Phyllodoce caerulea (blue heath or purple mountain heather) is a characteristic plant of many Low-Arctic and boreal regions but has an especially patchy distribution.

Heaths full of this plant flowering can be often seen from distance due to its spectacular colours.

It has needle-like evergreen leaves and a woody stem. Part of the wide heather family.

#ArcticAlpinePlants #Wildflowers #flora #Arctic #plants

6/
Silene uralensis has a circumarctic distribution. This one is from #Svalbard.

Just look at the size of the flower compared to its shoot!

The flower is almost fully closed with minimal petals which hints that self-pollination is likely its main strategy. Insect pollinators can be sometimes scarce in High-Arctic.

#ArcticAlpinePlants #Arctic #Biodiversity #Wildflowers

This fjord in Senja is an absolute favourite of mine. Have seen it in all kinds of weather, but there are moments when a gentle bit of sunlight pops out between the clouds and brushes against the slopes.

I don't use a telephoto often, but they are quite useful every now and then. This shot about 100mm, with a slow shutter.

#BlueNorway

#Norway #Senja #HappyPlace #Lumix #LumixS1R #Photography #Photographie #Fotografie #Monochrome #Blackandwhite #NotReallyMonochrome

7/
Phyllodoce caerulea (blue heath or purple mountain heather) is a characteristic plant of many Low-Arctic and boreal regions but has an especially patchy distribution.

Heaths full of this plant flowering can be often seen from distance due to its spectacular colours.

It has needle-like evergreen leaves and a woody stem. Part of the wide heather family.

#ArcticAlpinePlants #Wildflowers #flora #Arctic #plants

6/
Silene uralensis has a circumarctic distribution. This one is from #Svalbard.

Just look at the size of the flower compared to its shoot!

The flower is almost fully closed with minimal petals which hints that self-pollination is likely its main strategy. Insect pollinators can be sometimes scarce in High-Arctic.

#ArcticAlpinePlants #Arctic #Biodiversity #Wildflowers

#paper alert: "Intraspecific #trait #variability mediates the effect of #nitrogen addition and #warming on aboveground #productivity". Lead by Li Zhang, published in #Oikos with M. Huang, X. Liu, Y. Xiao, @FrancoiseCardou Y. Rong & S. Zhou http://doi.org/10.1111/oik.09559 (1/3)

5/
There are ~28000 species of #Orchids globally but only very few in the #Arctic. Chamorchis alpina is one of those. The only species in its genus.

It’s not as showy nor colourful as its many relatives, but it is always a pleasing find.

Occurs only on the calcareous heaths of Fennoscandia and #Alps. #Endangered here in #Finland.

#ArcticAlpinePlants #Biodiversity