The floodplain meadows of Soomaa National Park, Estonia [Elektronische Ressource] : vegetation - dispersal - regeneration / vorgelegt von Jaan Palisaar

Jaan Palisaar

Sujets

• Biologie

Informations

• Publié par: universitat_regensburg
• Publié le: 01 janvier 2006
• Nombre de lectures: 28
• Langue: Deutsch
• Poids de l'ouvrage: 3 Mo

Extrait

The floodplain meadows of Soomaa
National Park, Estonia
Vegetation – Dispersal – Regeneration
Dissertation zur Erlangung des Doktorgrades
(Dr. rer. nat.) der Naturwissenschaftlichen Fat kIuIltIä – Biologie und
vorklinische Medizin – der Universität Regensburg
vorgelegt von
Jaan Palisaar
aus Kiel
Edertal, April 2006Promotionsgesuch eingereicht am 10. April 2006
Tag der mündlichen Prüfung 26. Juli 2006
Die Arbeit wurde angeleitet von Prof. Dr. Pectehrl oPdos
Prüfungsausschuß: Prof. Dr. Jürgen Heinze
Prof. Dr. Peter Poschlod
Prof. Dr. Karl-Georg Bernhardt
Prof. Dr. Christoph OberprielerContents
List of figures........................................ ... ... ... ... ... ... ... ... ... ... ... ... .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. ............I.II.
List of tables.......... . . . . . . . . . . . . . ..................... . . . . . . . . . .. .. .. . .. .. .. .. .. .. .. .. .. V.I
Acknowledgments.......................... . . . . . . . . . .. . . . . . . . .............I.X..........
A. Foreword................................................ . . . . . . . .. .. .. .. .. .. .. ............1..
B. Study area.......................... . . . . . . . . . . . . . . . . . . . . . . .. .. .. .. .. ................3.
1 Physical setting.......... .. .. .. .. .. .. .. .. .. .. .. .. .. ........... ... ... ... ... ... ... ... .. ................................3.........
2 Land use........................... . . . . . . . . . . . . . . . . . . . . . .. .. .. .. .. ..........8.....
C. Vegetation types and habitat parameters................ . . . . . . . .. 1.1..........................
1 Introduction......................... . . . . . . . . . . . . . . . . . . . . .. .. .. .. .. .. .. 1.1........
2 Methods........................... . ......... . . . . . . . . .....................1. 5.......
2.1 Vegetation.......... . . . . . . . . . . . . . . . . . . . . . . . . . . ............1. 5..............
2.2 Habitat parameters........................................................................1.6.....................
2.3 Statistical methods.........................................1.7...................
3 Results and Discussion........ . . . . . . . . . . . . . . ......................1.9.................
3.1 Species groups......... . . . . . . . . . . . . . . . . . . . . . . . ..........1.9.................
3.2 Plant communities........ . . . . . . . . . . . . . . ...................2.1.....................
3.2.1 Dry floodplain grasslands................... . ..2.2................................
3.2.1.1 Nardus-Festuca ovina community....................................................22
3.2.1.2 Festuca ovina-Sesleria caerulea commun.it.y................................23
3.2.2 Moderately moist (mesic) floodplain grasssla.n.d ..................................26
3.2.2.1 Festuca rubra-Deschampsia-communi.ty................................26
3.2.2.2 Alopecurus pratensis-Galium mollugo-comtmy.un. i....................27
3.2.2.3 Alopecurus-Deschampsia-community..................................28
3.2.3 Moist floodplain grasslands.....................................2.9.................................
3.2.3.1 Sesleria-Deschampsia-community........................................30
3.2.3.2 Melampyrum nemorosum-Deschampsia-commu.ni.ty. ...............30
3.2.3.3 Carex cespitosa-Deschampsia-communit.y...............................31
3.2.4 Wet floodplain grasslands with tall sedge.s.........................................32
3.2.4.1 Carex disticha-Juncus filiformis-com .m .u.ni.ty..............................32
3.2.4.2 Ranunculus flammula-Juncus filiformis-cnoimtym.u....................33
3.2.4.3 Potentilla palustris-Carex disticha-comtmy.u.ni............................33
3.2.4.4 Carex acuta-community.... . . . . . . . . . . . . . . . . . .............................33
3.2.4.5 Carex elata-community.....................................................34
3.2.5 Wet floodplain grasslands with tall grasserse,e d-beds.........................34
3.2.5.1 Phalaris-Phragmites-community..........................................34
3.2.5.2 Carex acuta-Schoenoplectus lacustris-commituyn.........................34
3.3 Syntaxonomy........... . . . . . . . . . . . . . . . . . . . . . . . . .......3.5 ..................
3.3.1 Nardetalia strictae...................... . . .... . . . . . . 36.........................
3.3.2 Molinio-Arrhenatheretea.................... . . .36.................................
I3.3.2.1 Arrhenatheretalia...... . . . . . . . . . . . . . . . . . . 3.7 ...............................
3.3.2.2 Molinietalia...................................... ... .......................39...........................
3.3.3 Caricion nigrae...................... . . ..........4.1.......................
3.3.4 Phragmito-Caricetea...............................4. 2............................
3.4 Habitat and vegetation parameters....................4.5.................................
3.4.1 Soil......................... . . . . . . . . . . . ....... . . . .. .... 4. 5.............
3.4.2 Groundwater..................................4.7........................
3.4.3 Biomass........... .. .. .. .. .. .. .. .. .. .. .. .. .. ............................. ... ... ... ... ... .. .. .. 4. 8 ..................
3.5 Synopsis of habitat – vegetation relation.s..............5.1 ...................................
3.5.1 CCA............ . . . . . . . . . . . . . . . . . . . . . . . . . ........ . . .. 51.................
3.5.2 Ellenberg indicator values......................5.3 ...............................
3.5.3 Vegetation profiles..................... . ....... . . . . 56..........................
3.6 Nature conservation and management.... . . . . . . . . .......................................65
D. Dispersal, regeneration, and the role of praliantst. t.......................7.1 ..........................
1 Introduction......................... . . . . . . . . . . . . . . . . . . . . .. .. .. .. .. .. .. 7.1........
1.1 Seed banks.......... . . . . . . . . . . . . . . . . . . . . . .......... . . .........7.2..............
1.2 Seed dispersal.................................................7. 3................
1.3 Gap regeneration....................... . . . ........ . . . ....7.5...................
1.4 Plant trait analysis.............................. . . . . . . . . .....7.6.................
1.5 Questions asked........................................ ... ... ... ... ... ... ...... . .. .. .. .. .. .. .. .. 7 .8..................
2 Methods........................... . ......... . . . . . . . . .....................8.1.......
2.1 Seed rain......................... ....... . . . . . . . . ..............8.1............
2.2 Seed sowing experiment................................8.4..........................
2.3 Disturbance and regeneration.... . . . . . . . . . . . . . . .......8. 8.............................
2.4 Plant traits................................................................................................9.0............
3 Results.............. .. .. .. .. .. .. .. .. .. .. .. .. .. ................................ ... ... ... ... ... .. .. .. ..........................9.5....
3.1 Seed rain........................... . . . . . . . . ..................9.5............
3.1.1 Seed traps..............................................9.5 ...................
3.1.2 Drift material....... . . . . . . . . . . . . . . . . . . . . . . . ...1.0.8......................
3.2 Seed sowing experiment............................1.0.9...........................
3.2.1 General results...................................... ... ..... ... ... ... ... ... .. .. .. 1.09........................
3.2.2 Establishment...................................................................1.1.0........................
3.3 Disturbance and regeneration................... ....1.1.2 ..............................
3.3.1 General results........................... . . . . . . . . 1.12........................
3.3.2 Comparison of species composition.............................................115
3.3.3 Species traits....................... . . . . . . . . .....1.1.6.....................
3.4 Plant traits....................................... ... ... ... ... .........................................1.2.0.............
4 Discussion......................................... ... ... ... ... ... ... ... ... ... ... ... .......... .. .. .. .. .. ............1.32.........
4.1 Methodological considerations.....................1.32................................
4.2 Seed rain.......................................................1.33..............
4.3 Seed sowing experiment..............................1.4 .1...........................
4.4 Disturbance and regeneration.......................1.50...............................
4.5 Plant traits....................................... ... ... ... ... ... ... ... ... .............................1.57..............
E. Summary.......................................... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. .. .. .. .. .. .. . .. .. .. .. .. .. .. 1.6.3 ....
F. References........................................ . . . . . . . . ......................1.6.9...
G. Appendix.......................... . . . . . . . . . . . . . . . . . . . . . .. . .. .. .. .. .. .. .. 1.8.7....
IIList of figures
B. Study area
Fig. B.1: Average climatic conditions in thef a trheae oSoomaa NP..............3......