| Moss species | Conditions | Options | CO2 treatment | CO2 effect | N+ treatment | N+ effect | WTD | DWT effect | Duration | Remarks | Author(s) |
| Sphagnum fallax and Polytrichum strictum | Field | 1) Uncut plants and 2) cut plants | 360/560 ppm | 1) Uncut: −HG, 0 LG, 0 MG (Sphagnum); −HG, −LG, −MG (Polytrichum); 2) Cut: −HG, 0 LG, 0 MG (Sphagnum); 0 HG, 0 LG, 0MG (Polytrichum) | 0/3 g∙N∙m−2∙yr−1 | 1) Uncut: 0 HG, 0 LG, 0 MG (Sphagnum); 0 HG, 0 LG, 0 MG (Polytrichum); 2) Cut: −HG, LG = n.d., MG = n.d. (Sphagnum); −HG, −LG, 0MG (Polytrichum) | 272 - 290 mm | Included into the models | 245 days | The two treatment effects were tested on the three growth responses of both species with uncut and cut options. The aim is to test the validity and growth responses under specific treatments using different methods. | Present work |
| Sphagnum fuscum | Field | Uncut plants | n.d. | n.d. | Higher emissions in N and S but no significant differences measured the immissions | 0 HG, 0 MG, 0 NPP | Varying between 0.5 m and 1m | Included into the models | 4 years | The biomass is calculated from height increment using “cranked wires” and the specific bulk density for Sphagnum fuscum. | Wieder et al. 2010 |
| Sphagnum fuscum, Sphagnum balticum, Sphagnum magellanicum and Sphagnum cuspidatum | Greenhouse | Uncut plants, although taken out of their environment (5 m depth) | n.d. | n.d. | 0/4 g∙N∙m−2∙yr−1 | Together with elevated temperatures (+4.2˚C): −HG, −MG, −NPP | Artificially maintained at −1 cm | Included into the models | 2 growing seasons | The biomass is calculated from height increment using “Cranked wires” and the average (non-specific) bulk density. | Breeuwer et al. 2009 |
| Sphagnum sp. & S. subnitens | Field | Uncut plants | Ambient/ ambient +235 ppm | −Cover (39%) but +total biomass (115%) | n.d. | n.d. | 3 cm in control, 5 cm in eCO2 | Not included in the model | 3 years | Shift in plant community from Sphagnum spp. to vascular species, through a decline in S. subnitens cover (39%) and an increase in J. effusus cover (40%), and 115% total biomass increase. | Fenner et al. 2007 |
| Sphagnum palustre, S. recurvum and Polytrichum commune | Field and greenhouse | Cut plants (greenhouse), HG (cranked wire technique), Abundance and extrapolated MG (point-quadrat) | Ambient/ ambient +200 ppm | +HG (<1 year) and −HG (≥1 year) (Sphagnum, greenhouse); −MG (Sphagnum recurvum, field); 0 MG (Polytrichum, field) | n.d. | n.d. | 18 - 23 cm (field); 4 cm (greehouse) | −MG (Sphagnum); 0MG (Polytrichum) | 3 years | Greenhouse: Sphagnum growth was stimulated by elevated CO2 in the short term, longer term (≥1 year) growth was probably inhibited by low water tables and/or downregulation of photosynthesis. In the field only réduction of abundance for S. recurvum. | Toet et al. 2006 |
| Sphagnum sp. | Field | Uncut plants. Cranked wire for HG, bulk densities of sections, point-quadrat for cover and NPP | n.d. | n.d. | N(40 kg∙ha−1∙y−1) and/or P (3 kg∙ha−1∙y−1) | −HG, −MG, −NPP | n.d. | n.d. | 4 years | N addition depressed Sphagnum HG at four sites and reduced Sphagnum and NPP at two sites. P alleviates the negative impact N has on Sphagnum. | Limpens et al. 2004 |
| Spahgnum recurvum | Greenhouse | Cut plants | 700/420 ppm | +MG | n.d. | n.d. | n.d. | n.d. | n.d. | Capitula dry weight per pot for Sphagnum. | Hoorens et al. 2003 |