Patterns and processes of Heracleum mantegazzianum invasion into German cultural landscapes on the local, landscape and regional scale [Elektronische Ressource] / Jan Thiele

Informations

• Publié par: justus-liebig-universitat_giessen
• Publié le: 01 janvier 2008
• Nombre de lectures: 109
• Langue: English
• Poids de l'ouvrage: 5 Mo

Extrait

Patterns and processes of Heracleum mantegazzianum
invasion into German cultural landscapes on the local,
landscape and regional scale


Jan Thiele

2007


Heracleum mantegazzianum
Urtica dioicaHolcus lanatus
Aegopodium podagraria
Ranunculus repens








Dr. rer. nat. Dissertation
Division of Landscape Ecology and Landscape Planning
Faculty of Agricultural Sciences, Nutritional Sciences and Environmental Management
Justus-Liebig University Gießen
0 2 4 6 8
Institut für Landschaftsökologie und Ressourcenmanagement
Professur für Landschaftsökologie und Landschaftsplanung






Patterns and processes of Heracleum mantegazzianum invasion
into German cultural landscapes on the local, landscape and
regional scale






Dissertation
zur Erlangung des Doktorgrades
– Dr. rer. nat. –
der Gemeinsamen Kommission Naturwissenschaften
für die Naturwissenschaftlichen Fachbereiche der
Justus-Liebig Universität Gießen






vorgelegt von
Dipl. Landschaftsökologe
Jan Thiele




Gießen 2007



Die vorliegende Arbeit wurde zwischen Januar 2002 und April 2006 unter Leitung von Prof.
Dr. Dr. Annette Otte am Institut für Landschaftsökologie und Ressourcenmanagement im
Fachbereich Agrarwissenschaften, Ökotrophologie und Umweltmanagement der Justus-
Liebig-Universität Gießen durchgeführt.















Dekan Prof. Dr. Peter R. Schreiner
Institut für Organische Chemie
FB 08 der Justus-Liebig-Universität Gießen
Heinrich-Buff-Ring 58, 35392 Gießen

Erstgutachterin Prof. Dr. Dr. Annette Otte
Institut für Landschaftsökologie und Ressourcenmanagement
FB 09 der Justus-Liebig-Universität Gießen
Heinrich-Buff-Ring 26-32, 35392 Gießen

Zweitgutachter Prof. Dr. Gerd Esser
Institut für Pflanzenökologie
FB 08 der Justus-Liebig-Universität Gießen
Heinrich-Buff-Ring 26-32, 35392 Gießen


This thesis is based on the following three publications:

I. Thiele, J. and Otte, A. (2006). Analysis of habitats and communities invaded by
Heracleum mantegazzianum Somm. et Lev. (Giant Hogweed) in Germany.
Phytocoenologia 36 (2): 281-320.
II. Thiele, J., Schuckert, U. and Otte, A. (submitted). Cultural landscapes of Germany
are patch-corridor-matrix mosaics for an invasive megaforb.
III. Thiele, J. and Otte, A. (2008). Invasion patterns of Heracleum mantegazzianum in
Germany on the regional and landscape scale. Journal for Nature Conservation 16
(1).
Publication I, II and III are regular research papers. In all publications, I performed the field
work and was responsible for data analysis and writing. Annette Otte was involved in
sketching out the research tasks and planning of the study designs. Furthermore, she gave
helpful comments on drafts of the papers and made constructive contributions in discussing
issues of Heracleum mantegazzianum and invasive species in general. In paper II, Ulrike
Schuckert was partly responsible for interpretation and classification of aerial photographs.

Further studies have been published as book chapters of the peer-reviewed compendium:

Pysek, P., Cock, M.J.W., Nentwig, W. and Ravn, H.P. (eds., 2007). Ecology and Management
of Giant Hogweed (Heracleum mantegazzianum), CAB International.

Thiele, J., Otte, A. and Eckstein, L. (2007). Ecological needs, habitat preference and
plant communities invaded by Heracleum mantegazzianum.

Thiele, J., Otte, A., Eckstein, L. (2007). Impact of Heracleum mantegazzianum on
invaded vegetation and human activities.

Otte, A., Eckstein, L., Thiele, J. (2007). Heracleum mantegazzianum in its primary
distribution range of the Western Greater Caucasus.

TABLE OF CONTENTS

Table of Contents
1 General Introduction ....................................................................................................... 1
1.1 Background ................................................................................................................ 1
1.2 Objectives................................................................................................................... 3
2 Study species ..................................................................................................................... 5
3 Study areas........................................................................................................................ 7
4 Data collection and statistical analyses........................................................................... 9
4.1 Overview .................................................................................................................... 9
4.2 Data collection............................................................................................................ 9
4.3 Statistical analyses.................................................................................................... 11
5 Analysis of habitats and communities invaded by Heracleum mantegazzianum
Somm. et Lev. (Giant Hogweed) in Germany............................................................. 13
5.1 Abstract .................................................................................................................... 13
5.2 Introduction .............................................................................................................. 14
5.3 Study areas ............................................................................................................... 15
5.4 Materials and Methods ............................................................................................. 16
5.5 Results ...................................................................................................................... 18
5.6 Discussion ................................................................................................................ 34
5.7 Acknowledgements .................................................................................................. 38
6 Cultural landscapes of Germany are patch-corridor-matrix mosaics for an invasive
megaforb ........................................................................................................................ 39
6.1 Abstract .................................................................................................................... 39
6.2 Introduction .............................................................................................................. 40
6.3 Materials and methods ............................................................................................. 41
6.4 Results ...................................................................................................................... 47
6.5 Discussion ................................................................................................................ 51
6.6 Conclusions .............................................................................................................. 54
6.7 Acknowledgements .................................................................................................. 54
7 Invasion patterns of Heracleum mantegazzianum in Germany on the regional and
landscape scale............................................................................................................... 55
7.1 Abstract .................................................................................................................... 55
7.2 Introduction .............................................................................................................. 56
7.3 Methods.................................................................................................................... 57
7.4 Results ...................................................................................................................... 59
7.5 Discussion ................................................................................................................ 62
7.6 Acknowledgements .................................................................................................. 66
8 General discussion.......................................................................................................... 67
8.1 Factors facilitating or constraining the invasion of Heracleum mantegazzianum ... 67
8.2 Impacts on native flora and vegetation .................................................................... 70
8.3 Invasion hypotheses and the case of Heracleum mantegazzianum.......................... 72
I TABLE OF CONTENTS
9 Main conclusions ............................................................................................................ 74
10 Summary ......................................................................................................................... 75
11 Zusammenfassung...............................................................