Du är här

Soil chemistry of local vegetation gradients in sandy calcareous grasslands

Publiceringsår: 2010
Språk: Engelska
Sidor: 127-138
Publikation/Tidskrift/Serie: Plant Ecology
Volym: 206
Nummer: 1
Dokumenttyp: Artikel
Förlag: Springer

Sammanfattning

Acidification and N-deposition are continuous processes that alter the composition of plant communities. We investigated vegetation transitions in sandy grasslands and tested two hypotheses: (1) a shift from vegetation dominated by Koeleria glauca to one dominated by Corynephorus canescens is due to acidification and (2) a shift from vegetation dominated by K. glauca to one dominated by Arrhenatherum elatius is due to increased mineral-N. The occurrence of K. glauca and C. canescens followed pH shifts strikingly well. However, the pH varied considerably between sites, and we found that differences in preference for bare sand may be important for the coexistence of these two species at both high and low pH. In 75% of the gradients, the dominance of A. elatius was related to high content of mineral-N. Most species preferred lime-rich soils and we concluded that both N-enrichment and acidification may lead to loss of species in calcareous sandy grasslands.

Disputation

Nyckelord

  • Biology and Life Sciences
  • enrichment
  • Succession
  • N
  • Sand steppe
  • Decalcification
  • Sandy grasslands
  • Acidification

Övrigt

Published
Yes
  • ISSN: 1385-0237

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen

LERU logo U21 logo