Composition and richness of the ground vegetation

Data presented is based on point-intercept data from field surveys of the ground vegetation. Compositional data is presented for the 10 most abundant species of the ground vegetation. Richness data, diversity indices and their corresponding evenness measures are based on all species. Besides data related to the species the file contain information on site id, latitude of the experimental sites, treatment, time (years) since last thinning operation and latitude (degrees) north of the southernmost site. Treatments were: Thinning (Th), No thinning (NoTh), Nitrogen fertilization (N), Thinning+ nitrogen fertilization (Th+N), and Thinning+N and P fertilization (Th+N+P)

Timber production

Data presented is increase in stem growth of Scots Pine (Pinus sylvestris) between repeated measurements of stem diameter. Production is expressed as stem volume increment (m3) per ha over the experimental period. Besides data on timber production the file contain data on site id, latitude of the experimental sites, treatment, time (years) since last thinning operation and latitude (degrees) north of the southernmost site. Treatments were: Thinning (Th), No thinning (NoTh), Nitrogen fertilization (N), Thinning+ nitrogen fertilization (Th+N), and Thinning+N and P fertilization (Th+N+P)

Production potential of non-timber forest products

Dry weight biomass of berry producing dwarf shrubs (V. myrtillus and V. vitis-idaea) and ground living lichens (utilized by reindeers during winter) in five treatments. Lichen data are from sites located in the counties currently utilized as winter grazing areas (site 895 and sites located north of site 895). Treatments were: Thinning (Th), No thinning (NoTh), Nitrogen fertilization (N), thinning+ nitrogen fertilization (Th+N), and Thiining + N and P fertilization (Th+N+P)

Litter element and carbon chemistry fluxes.

<p>Total mean (+SE) litter carbon (a), nitrogen (b), phosphorus (c), lignin (d), cellulose (e) or hemi-cellulose (f) fluxes in response to long-term N addition (0, 12.5 or 50 kg N ha^-1 yr^-1; n = 5) for each litter category: moss, <i>V</i>. <i>myrtillus</i> leaves (V. m.), reproductive organs (Rep. org.), deciduous tree leaves (Dec. L.), <i>P</i>. <i>abies</i> needles (Spruce), <i>P</i>. <i>sylvestris</i> (Pine), twigs and branches. V. m and Dec. L. litter categories are missing from panels (d), (e) and (f) because insufficient litter material was available for these analyses. Different letters (a or b) next to each group of bars indicate significant differences between treatments (α = 0.05) determined using Student-Newman-Keuls <i>post-hoc</i> tests. Nearly significant difference at (0.05 < P < 0.10) are indicated by a star (*). Non-significant differences are indicated by n.s.</p

Total litter fluxes.

<p>Total litter fluxes.</p

Mean annual litter biomass in response to nitrogen addition.

<p>Mean (Mg ha^-1 yr^-1) biomass of 8 litter categories (moss tissue, <i>V</i>. <i>myrtillus</i> leaf, reproductive organ, tree twig, tree branch litter, <i>P</i>. <i>abies</i> needle, <i>P</i>. <i>sylvestris</i> needle and deciduous tree leaf litter) in response to long-term N addition (0, 12.5 or 50 kg N ha-1 yr-1; n = 5). The total bar height represents the total (+SE) litter biomass (Mg ha^-1 yr^-1). Different letters (a or b) across bar segments with the same shade indicate significant differences pair-wise difference using Student-Newman-Keuls <i>post-hoc</i> tests.</p

Appendix B. Notes on the biology of the observed microfungi on Andromeda polifolia and Vaccinium oxycoccos.

Notes on the biology of the observed microfungi on Andromeda polifolia and Vaccinium oxycoccos

Appendix A. A table showing observed microfungi on Andromeda polifolia and Vaccinium oxycoccos.

A table showing observed microfungi on Andromeda polifolia and Vaccinium oxycoccos

Split-root experiment with <i>Arabidopsis thaliana</i>.

<p>Plants were grown on agar plates that were divided into two identical compartments by a plastic rib. The growth medium was identical on both sides of the rib and with N supplied as a mixture of 1.5 mM glutamine+3 mM NO₃⁻ but on one side, one of the N sources (either glutamine or NO₃⁻) was ¹⁵N-labelled. Bars indicate the fraction of N derived from each source and represent average ± SE, n = 6–7. Different lower-case and capital letters indicate differences at p≤0.05 between plants parts and between N sources, respectively.</p

Biomass (a) and fraction of biomass in roots (b) of <i>Arabidopsis thaliana</i> grown on either NO₃⁻ or on NH₄NO₃ or on different combinations of glutamine and NO₃⁻.

<p>All media had a total N concentration of 6 mM. Plants were grown on sterile agar plates for 21 days. Bars represent average values ± SE, n = 8. Different lower-case letters indicate differences at p≤0.05 between N treatments.</p