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Undersvik

PI: Hjalmar Laudon

Forest fertilisation and nutrient leakage

Fertilizationnutrient leakageSveaskog

Vertical and horizontal patterns of pine root water and nitrogen uptake

PI: John Marshall

This project uses isotopic labels to describe the depth and breadth of root activity. The work involves adding the label to plots, monitoring the passage of the water label through the stems, monitoring the accumulation of nitrogen in the canopy, and measuring the deuterium labelling of stem wood in the trees around the plots. The understory vegetation and any mushrooms will also be described, as will patterns of soil water isotopic labelling.

Rootverticalhorizontal

Estimating GPP from stable isotopes and sapflux

PI: John Marshall

Working with Niles, Natalia, Jose, and Kersti, we have measured sapflux and the stable isotope composition of phloem sap around the tall tower at Svartberget. We will use these data to estimate GPP and compare these estimates to those from eddy flux and from Kersti's model. For precise work, this method requires knowledge of the isotopic composition of CO2 in the tree canopy. We aim to set up this measurement on the tall tower by attaching a Picarro CO2 isotope analyzer to the tower inlets.

GPPsap fluxisotopes

Trollberget regular stream sampling

PI: Eliza Maher Hasselquist

Monitoring of water chemistry in several streams. Sampling twice per week with increased frequency during the spring flood.

stream waterchemistrycatchment

Degerö regular stream sampling

PI: Mats Nilsson

Monitoring of water chemistry in several streams. Sampling twice per week with increased frequency during the spring flood.

stream waterchemistrycatchment

The Umeå Aspen (UmAsp) Collection

PI: Stefan Jansson

The Umeå Aspen (UmAsp) collection is a population of aspen trees (Populus tremula) from around the Umeå kommun, collected and cloned into two contrasting common gardens: one site closer to the coast at Skogforsk in Sävar and one at the inland, higher elevation site at Kulbäcksliden near Vindeln. Aspen is a model species for forest tree genetics and has high value in forest ecosystems. The purpose of the collection is to study natural genetic variation in traits including physiology, phenology, growth and biotic interactions. We have DNA sequencing data for all UmAsp individuals to enable population genetics studies, and together with phenotype data we are conducting genome-wide association mapping to identify and genetic variants associated with each phenotype. The two gardens facilitate validation of our findings in different environments and examination of genotype-by-environment interactions of the phenotypes studied. Principal Investigator: Stefan Jansson. Field trials manager: Kathryn Robinson.

aspengeneticspopulation

Isotope-informed hydrological modeling

PI: Kevin Bishop

Dr. Ali Ameli, Univ of British Columbia, is using the rainfall, runoff, PET and hydrological isotope data that the Krycklan/Svartberget monitoring programs have collected over the years. The project seeks to better constrain the modelling of runoff processes using the isotopes of water

equifinalityhydrological modelingstable isotopes of water

Barkborre labförsök 2020

PI: Martin Ahlström

Labstudie i syfte att utröna insekticiders effekt på granbarkborrar. Exponeringstid och mortalitet. Projektledare Per-Erik Larsson.

barkborrebakborrefällainsekticid

Barkborre fältförsök 2020

PI: Martin Ahlström

Syftet med studien är att utvärdera metoder för att i praktiskt skogsbruk minska angreppen på stående frisk skog. Försöket planeras till Sveaskogs markinnehav på Ebbegärde kronopark (4700 ha) nordost om Nybro. Om markinnehavet inte är tillräckligt stort används i första hand även grandominerade markinnehav på den intilliggande Hornsö Ekopark. Försöket genomförs som ett blockförsök med tre försöksled (Kontroll, Trinetfällor och Novefällor) och tio upprepningar. I Trinetfällorna ingår feromon och en insekticid medan det i Novefällorna endast ingår ett feromon.

bakborrefällabarkborretrinet

Ecosystem carbon and water fluxes in boreal forests

PI: Matthias Peichl

This project explores the ecosystem carbon and water fluxes at the Rosinedal and Svartberget forests using the eddy covariance technique. At Rosinedal, we also investigate the effect of ecosystem-scale N addition on these fluxes. The project is part of the Wallenberg project: Branchpoints.

boreal forestscarbon and water fluxeseddy covariance

CATCHMENT SCALE SUSPENDED SEDIMENT EXPORT

PI: Eliza Maher Hasselquist

Question: How does clear-cutting and subsequent ditch cleaning affect the quality and quantity of exported suspended solids (SS) at the catchment scale? Methods: 1. Turbidity logged every 15 minutes during the ice-free season 2. Suspended Sediment grab sample on average 2x per month all year round a. Use SS grab samples to correlate to turbidity and thus have continuous measurements during active times of the year. 3. Time Integrated Mass Flux Sampling (TIMS) during ice-free season – Integrated measure over 2 weeks 4. Ditch characteristics before and after cleaning a. bed material samples b. measurements of particle size distribution of the bed material c. ditch cross sections at 50 m intervals with high res GPS or total station d. ditch depth, bottom width

ditch cleaningdikesrensningwater qualityclear-cut

Citizens’ science project on bat monitoring for mapping green infrastructure of conservational value in urban areas

PI: Petter Axelsson

This is a citizen science project with the intention of mapping the presence of bats in urban Umeå and Uppsala, using server infrastructure at Svartberget.

batscitizen scienceumeåuppsala