首页 | 本学科首页   官方微博 | 高级检索  
     


Long-term biomonitoring of lichen and bryophyte biodiversity at Burnham Beeches SAC and global environmental change
Authors:O. William Purvis  I. Tittley  P. D. Jim Chimonides  Roger Bamber  Peta A. Hayes  Peter W. James
Affiliation:Departments of Botany, Mineralogy, Palaeontology, Zoology , Natural History Museum , Cromwell Road, London, SW7 5BD, UK
Abstract:Long-term monitoring began 20 years ago at Burnham Beeches Site of Special Interest (SSSI), National Nature Reserve (NNR) and European Special Area of Conservation (SAC) lying 40 km west of London as a consequence of the authorization of an application to extract gravel from an adjacent site lying north of Slough Trading Estate. Dust monitoring (sticky pads) and photographic monitoring, recording and image analysis was instigated in 1992 on Parmelion communities to assess changes in lichen growth, health and community composition. Long-term monitoring identifies that the lichen flora on free-standing trees has undergone rapid expansion from a near dominance by the SO2-tolerant ‘acidophyte’ species Lecanora conizaeoides and Hypogymnia physodes following reductions in SO2 concentrations. Long-term influences of low levels of eutrophication, gaseous pollutants (particularly globally rising background ozone concentrations) on lichen and bryophyte communities and succession under changing climatic conditions are unknown. Soil–plant relationships, lichen–invertebrate interactions and a pollution legacy must also be considered.
Keywords:biomonitoring  bryophyte  climate change  episode  lichen  pollution  public policy
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号