Nilsson, Mats
- Institutionen för skogsekologi, Sveriges lantbruksuniversitet
Sammanfattning
Growth and production of Sphagnum balticum and interspecific competition between S. balticum and either Sphagnum lindbergii or transplanted Sphagnum papillosum, were studied in a 4-yr field experiment in a poor fen. Temperature and influxes of nitrogen (N) and sulphur (S) were manipulated in a factorial design. The mean daily air temperature was increased by 3.6degreesC with glasshouse enclosures. Nitrogen loads were increased 15-fold and S loads seven-fold compared with the natural loads up to influxes observed during the 1980s in south-western Sweden. Production of S. balticum decreased with increasing temperature and N-influx. The N treatment significantly reduced the incremental length of S. balticum, and this reduction was reinforced with time (24% in the first year to 51% in the final year). The area covered by S. lindbergii changed with time in all treatments and S. papillosum area increased significantly in the temperature-treated plots. Growth, production and competitive patterns change if the environmental conditions change. Increased N deposition and raised temperature may transform mires currently dominated by Sphagnum into vascular-plant-dominated mires. (C) New Phytologist (2004)
Publicerad i
New Phytologist
2004, volym: 163, nummer: 2, sidor: 349-359
Utgivare: BLACKWELL PUBLISHING LTD
SLU författare
UKÄ forskningsämne
Miljö- och naturvårdsvetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1111/j.1469-8137.2004.01108.x
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/3584