000133597 001__ 133597
000133597 005__ 20181203021434.0
000133597 037__ $$aARTICLE
000133597 245__ $$aSawdust addition reduces the productivity of nitrogen-enriched mountain grasslands
000133597 269__ $$a2009
000133597 260__ $$c2009
000133597 336__ $$aJournal Articles
000133597 520__ $$aAnthropogenic nutrient enrichment of mountain grasslands has boosted grasses and fast-growing unpalatable plants at the expense of slow-growing species, resulting in a significant loss in biodiversity. A potential tool to reduce nutrient availability and aboveground productivity without destroying the perennial vegetation is carbon (C) addition. However, little is known about its suitability under severe climatic conditions. Here, we report the results of a 3-year field study assessing the effects of sawdust addition on soil nutrients, aboveground productivity, and vegetational composition of 10 grazed and ungrazed mountain grasslands. Of particular interest was the effect of C addition on grasses and on the tall unpalatable weed Veratrum album. After 3 years, soil pH, ammonium, and plant-available phosphorus were not altered by sawdust application, and nitrate concentrations were marginally higher in treatment plots. However, the biomass of grasses and forbs (without V. album) was 20–25% lower in sawdust-amended plots, whereas the biomass of V. album was marginally higher. Sawdust addition reduced the cover of grasses but did not affect evenness, vegetation diversity, or plant species richness, although species richness generally increased with decreasing biomass at our sites. Our results suggest that sawdust addition is a potent tool to reduce within a relatively short time the aboveground productivity and grass cover in both grazed and ungrazed mountain grasslands as long as they are not dominated by tall unpalatable weeds. The technique has the advantage that it preserves the topsoil and the perennial soil seed bank.
000133597 6531_ $$acarbon addition
000133597 6531_ $$acompetitive interactions
000133597 6531_ $$aEuropean Alps
000133597 6531_ $$amultisite field experiment
000133597 6531_ $$aseminatural grasslands
000133597 6531_ $$asoil nutrient availability
000133597 6531_ $$arestoration
000133597 700__ $$0243080$$g190741$$aSpiegelberger, Thomas
000133597 700__ $$aMatthies, Diethard
000133597 700__ $$aMüller-Schärer, Heinz
000133597 700__ $$aSchaffner, Urs
000133597 773__ $$j17$$tRestoration Ecology$$q865-872
000133597 909C0 $$xU11021$$0252129$$pECOS
000133597 909CO $$particle$$pENAC$$ooai:infoscience.tind.io:133597
000133597 937__ $$aECOS-ARTICLE-2009-001
000133597 973__ $$rREVIEWED$$sPUBLISHED$$aOTHER
000133597 980__ $$aARTICLE