The significance of stemflow chemistry for epiphytic lichen diversity in a dieback-affected spruce forest on Mt Brocken,northern Germany |
| |
| Affiliation: | 1. Autonomous University of Madrid, Department of Ecology, 2 Darwin Street, Madrid 28049, Spain;2. cE3c Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, C2, Piso 5, 1749-016 Lisbon, Portugal;3. Air Pollution Division, CIEMAT, Avda. Complutense 22 (edif. 70), Madrid 28040, Spain;4. Escuela Técnica Superior de Ingenieros Agrónomos, Universidad Politécnica de Madrid, Ciudad Universitaria, 28040 Madrid, Spain;5. Center for Ecological Research and Forestry Applications (CREAF), Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain;6. B-WARE Research Centre, Radboud University, PO Box 9010, 6525 ED Nijmegen, The Netherlands;7. ENEA, Via Anguillarese 301, 00123 Rome, Italy;8. LICA, Department of Chemistry and Soil Science, University of Navarre, Irunlarrea, 1-31008 Pamplona, Spain;9. Departamento de Biología, Unidad de Botánica, Universidad Autónoma de Madrid, C/ Darwin 2, 28049, Madrid, Spain;10. Dept. of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy;11. Dept. of Mathematics and Physics, Catholic University of Brescia, Via dei Musei 41, Brescia, Italy;12. Department of Science for Nature and Natural Resources, University of Sassari, Via Enrico De Nicola 1, 07100 Sassari, Italy;13. Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, Ctra. de Utrera km. 1, 41013 Sevilla, Spain;14. IPSP-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Florence, Italy;15. Department of Life Sciences, University of Siena, Via Mattioli 4, I-53100 Siena, Italy;p. CERENA-IST-UL, Centro de Recursos Naturais e Ambiente, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;q. Lancaster Environment Center, Lancaster University, Lancaster LA1 4YQ, UK;r. ACRI-ST, 260 route du Pin Montard, BP 234, 06904 Sophia Antipolis Cedex, France;1. University of Warmia and Mazury in Olsztyn, Department of Microbiology and Mycology, Oczapowskiego 1A, 10-719, Olsztyn, Poland;2. Jagiellonian University, Faculty of Biology, Institute of Botany, Gronostajowa 3, 30-387, Kraków, Poland;1. Department of Life Sciences, University of Siena, Via Mattioli 4, 53100 Siena, Italy;2. Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Bloco C2, 1749-016 Lisbon, Portugal;3. Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 9, 84523 Bratislava, Slovakia;4. Regional Agency for Environmental Protection – ARPA Molise, Via Petrella 1, 86100 Campobasso, Italy |
| |
| Abstract: | Epiphytic lichen diversity in a boggy stand of Norway spruce (Picea abies) was studied in the eastern Harz Mountains, northern Germany. Spruce trees at wet sites were affected by forest dieback, whereas trees on drier sites remained unaffected. Lichen diversity was higher on dieback-affected trees than on healthy ones. The foliose lichen Hypogymnia physodes was significantly more frequent on dead trees, whereas the crustose, extremely toxitolerant Lecanora conizaeoides occurred more frequently on healthy trees. Stemflow concentrations of NH4+, NO3−, PO3−, and SO42− were lower on affected trees. This is attributed to reduced interception from the atmosphere due to needle loss. Cover of H. physodes decreased with increasing mean SO42− concentration in stemflow. The total of lichen species per sample tree also decreased with increasing SO42− concentration in stemflow, indicating that most species reacted in a similar way as H. physodes. Cover of L. conizaeoides increased with increasing SO42− concentration, but decreased at higher SO42− concentrations. Bark chemistry had a minor influence on lichen diversity. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
