Previous events

October 16th, 2019

The effects of the prescribed burning of shrubs on soil properties
David Badía, University of Zaragoza, Spain
presentation

May 21st, 2019

The role of soil and vegetation in the forest CH4 cycling: a soil perspective
Elisa Halmeenmäki

Landscape variability and spatial biogeochemistry – developing modelling tools for sustainable use of boreal ecosystems
Antti-Jussi Kieloaho

The loss of organic carbon in discharge from agricultural mineral soil
Noora Manninen

April 29th, 2019

Belowground productivity at boreal peatlands – methods and results

Fungal biomass and species composition in peatland forests – in-growth mesh bag method
Krista Peltoniemi

The importance of fungi in peatlands drained for forestry is not comprehensively understood. These fungi, however, may significantly affect the soil carbon balance after drainage. We used fungal in-growth mesh bag method to estimate fungal biomass production and determine fungal diversity and species composition in drained peatland forests.

Fine root production at forestry-drained peatlands – root-ingrowth core method
Wei He

Fine root longevity at pristine and forestry-drained peatlands – minirhizotron method
Kari Minkkinen & Jaana Salomäki

March 26th, 2019

About microplastics in the soil (tentative title)
Salla Selonen

Distinct fungal and bacterial δ13C signatures as potential drivers of increasing δ13C of soil organic matter with depth
Lukas Kohl

Volatile organic compound fluxes from northern forest soils
Mari Mäki

Abstracts:

Lukas Kohl: I will present a study that investigated how the stable carbon isotope values (δ13C) of fungal, bacterial, and total microbial  biomass vary with soil depth boreal forest podzols, and discuss how these results provide new insight into microbial substrate sourcing in undisturbed soils and the establishment of vertical δ13C gradients.

Mari Mäki: In this presentation, I show the role of the boreal forest floor to the forest stand VOC exchange and present the diurnal, inter-annual and seasonal dynamics of VOC fluxes from the forest floor. I also discuss the role of various soil compartments on soil VOC fluxes.

February 26th, 2019

Treatment of hazardous mining effluents by means of nanofibrillated cellulose – industrial ecology in environmental protection
Salla Venäläinen

Effects of storm and bark beetle disturbance on soil carbon dynamics
Maiju Kosunen

A sustainability satellite map utilizing open forest, agriculture and soil data: IT & Soil Science working together for providing landowners with sustainable land management recommendations with their CO2 and environmental and ecological impacts
Otso Valta, Button Program Ry

January 29th, 2019

The effect of water table level on tree growth in drained peatland forests
Leena Stenberg

Insights into measuring highly variable and sporadic N2O emissions in a fertile peatland forest
Annalea Lohila

Modeling the effects of afforestation on the soil carbon stock of cultivated land in Finland
Boris Tupek

Abstracts:

The effect of water table level on tree growth in drained peatland forests

Ditch cleaning in drained peatland forests lowers water table and thus allows better aeration in the root zone and increases nutrient release in the soil. As a result, tree growth is improved. This presentation demonstrates a preliminary comparison of the two mechanisms on tree growth response.

Insights into measuring highly variable and sporadic N2O emissions in a fertile peatland forest

In this presentation I show multi-year results of N2O flux measurements in a fertile peatland forest using different chamber methods and analyzers. I will discuss the factors causing temporal and spatial variability in the fluxes, including the drought of summer 2018, and give a short summary of the exploitability of different methods.

Modeling the effects of afforestation on the soil carbon stock of cultivated land in Finland

Past and current agricultural use of soil leads in long-term to soil carbon loss, the source of CO2 emissions into the atmosphere. In fertile land, intensive agriculture increases agricultural yields supply of which may localy compensate for environmental stress in comparison to importing the goods. However, in less fertile land, the yields may not always compensate for the soil carbon loss and for the increased economic investment into agricultural production. Furthermore, when accounting for negative environmental impact through loss of carbon from these soils, it’s worth to evaluate possible alternatives in soil management e.g extensification or even afforestation. The added value of the long-term increase in soil carbon could outweigh current economic gains and hidden environmental costs.

Here we used measured and modeled climate data, agricultural statistics, and the forest stand simulator Motti to derive input for Yasso07 soil carbon model simulations; estimates of which we verified against literature. Soil organic carbon typically increases after afforestation due to higher forest plant litter input compared to the levels of agricultural litter. The drawback is the initial stage of afforestation which represents additional soil carbon loss if plant litter totals only from tree seedlings and saplings. However, if afforestation superseds prior extensification from cropland to grassland we would gain carbon in the soil and ecosystem immeadiately. As trees grow the increased litter input reverses the soil carbon loss to carbon sink in accord with the management, tree species used and climate. OPAL Life+ project

 

October 9th, 2018

Effects of biochar on carbon and nitrogen fluxes in boreal forest soil
Marjo Palviainen

Can biochar facilitate reusing lake sediments?
Mina Kiani

The World Reference Base for Soil Resources soil classification system – current questions
Tiina Törmänen

 

May 15th, 2018

Specialist soil microbes in a tropical tree population: implications for diversity and seed dispersal in plant communities
Jenalle Eck

Fungi in soil, wood debris and tree seedlings in energy wood harvested forests
Taina Pennanen

Cattle dung can increase CH4 production and influence the methanogen community of rewetted peat soils
Hannu Fritze

 

April 17th, 2018

Recovery of boreal forest soil and vegetation from physical and chemical disturbance
Lilli Kaarakka

Fires in northern boreal forests – effects of disturbance on biogeochemistry
Kajar Köster

 

March 20th, 2018

To treat or not to treat? The seedling performance of native tree species for reforestation on tropical peatlands in southeast Asia.
Maija Lampela

Cultivated organic soils classified by their greenhouse gas mitigation potential
Kristiina Regina and Hanna Kekkonen

Does rewetting of forestry-drained peatlands restore natural greenhouse gas dynamics?
Paavo Ojanen

 

February 27th, 2018

It’s complicated – top-to-toe phenotyping reveals variable trait responses to environment in a tree population
Matti Salmela

MAGGE-pH: Mitigating Agricultural Greenhouse Gas Emissions by improved pH management of soils
Asko Simojoki

Carbon Action: Research on the ways to accelerate carbon storage in the agricultural soils
Jussi Heinonsalo

 

January 30th, 2018

Do plant-mycorrhizal feedbacks of nitrogen deposition endanger carbon sink potential in peatlands?
Tuula Larmola & Heikki Kiheri

Ericoid plants and Scots pine shape fungal communities in their roots and surrounding soil
Outi-Maaria Sietiö