Vegetation on lava fields in the Hekla area, Iceland:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Stockholm
Almqvist & Wiksell
1991
|
| Schriftenreihe: | Acta phytogeografica Suecica
77 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | 114 S. Ill., graph. Darst., Kt. |
| ISBN: | 917210077X |
Internformat
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| 100 | 1 | |a Bjarnason, Ágúst H. |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Vegetation on lava fields in the Hekla area, Iceland |c Ágúst H. Bjarnason |
| 264 | 1 | |a Stockholm |b Almqvist & Wiksell |c 1991 | |
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| 650 | 7 | |a Vegetatie |2 gtt | |
| 650 | 7 | |a Vulkanische bodems |2 gtt | |
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Datensatz im Suchindex
| _version_ | 1804120339357106176 |
|---|---|
| adam_text | Titel: Vegetation on lava fields in the Hekla area, Iceland
Autor: Ágúst H. Bjarnason
Jahr: 1991
Contents
1 Introduction 7
1.1 Aims 7
1.2 Previous ecological investigations on Icelandic lava fields 7
1.3 Comparable investigations elsewhere 9
1.4 Terminology and abbreviations 10
2 General description 12
2.1 Physiographical background 12
2.2 The Hekla area 13
2.3 The Hekla system 17
2.3.1 Volcanic activity of [he Hekla System; 2.3.2 Chemical composition ot the eruptives;
2.3.3 Volcanic activity in historical times
2.4 Volcanic rocks 19
2.4.1 Tephra; 2.4.2 Lava
J Physiography of the thirteen lava fields 22
3.1 Introduction 22
3.1.1 Efrahvolfshraun 1158: 3.1.2 Sudurhraun 1300:3.1.3 Nordurhraun 13X9;
3.1.4 Palssteinshraun 1554; 3.1.5 Lava field 1693; 3.1.ft Trippafjallahraun 172?;
3.1.7 Lava fields 1766 (Austurhraun and Hringlandahraun); 3.1.8 Na furholtshraun 1845;
3.1.9 Krakatindshraun (Nvjahraun) 1878; 3.1.10 Lambafitjarhraun 1913;
3.1.11 Lava field 1947; 3.1.12 Lava fields 1970; 3.1.13 Lava field 1980/81
3.2 Short description of the investigated sites 29
4 Analysis of vegetation and vegetation-environment relations 31
4.1 Introduction 31
4.2 Vegetation description 31
4.3 Division into three environments and environmental factors 31
4.4 Soil analysis and microclimatic measurements 32
4.5 Multivariate analysis of vegetation and environmental factors 32
5 Topographic classification, soil and microclimate 34
5.1 Topographical habitat classification 34
5.1.1 Main surface; 5.1.2 Holes; 5.1.3 Crags
5.2 The soil 35
5.2.1 Soil formation; 5.2.2 Soil profiles; 5.2.3 The rate of increment; 5.2.4 pH values
5.3 Microclimaticconditions 38
6 Floristical notes 40
6.1 Vascularplants 40
6.2 Bryophytes 40
6.3 Lichens 41
7 The vegetation of the eleven older lava fields 42
7.1 Introduction 42
7.2 Survey of plant communities described earlier 42
7.2.1 Main surface; 7.2.2 Holes: 7.2.3 Crags
7.3 Plant communities on historical lava fields, a survey 47
7.3.! Racomitrium lanuginosum comm.: 7.3.2 Racomitrium canescens comm.: 7.3.3 Stereocaulon
vesuvianum comm.: 7.3.4 Drepanocladus uncinatus-Carex bigelowii comm.; 7.3.5 Anthelia julacea-
Pohlia drummondii comm.; 7.3.6 Empetrum nigrum-Racomitrium lanuginosum comm.;
7.3.7 Agrostis vinealis - Drepanocladus uncinatus comm.: 7.3.8 Lu/.ula spicata-Festuca
vivipara comm.; 7.3.9 Festuca rubra-Agrostis stolonifera comm.: 7.3.10 Calamagrostis stricta-
Festuca rubra comm.; 7.3.11 Oxyria digyna-Silene maritima comm.
7.4 Plant communities of Efrahvolfshraun 1158 52
7.4.1 Racomitrium lanuginosum comm. - Salix herbacea variant: 7.4.2 Racomitrium canescens comm.:
7.4.3 Empetrum nigrum-Racomitrium lanuginosum comm.: 7.4.4 Luzula spicata-Festuca vivipara comm.:
Acta phytoitcoyr. sitcc. 77
7.4.5 Ecological remarks
7.5 Plant communities of Sudurhraun 1300 54
7.5.1 Racomitriuiii laiiuginosum comm.: 7.5.2 Racomitriuni canescens comm.; 7.5.3 Empetrum nigrum-
Racomitrium laiiuginosum comm.; 7.5.4 Agroslis vinealis - Drepanocladus uncinatus comm.;
7.5.5 Ecological remarks
7.6 Plant communities of Nordurhraun 1389 57
7.6.1 Racomitriuni laiiuginosum comm.; 7.6.2 Empetrum nigrum-
Raconiilrium laiiuginosum comm.; 7.6.3 Luzula spicala - Festuca vivipara comm.;
7.6.4 Festuca rubra - Agrostis stolonifera comm.; 7.6.5 Ecological remarks
7.7 Plant communities of Palssteinshraun 1554 60
7.7.1 Racomitriuni laiiuginosum comm.; 7.7.2 Drepanocladus uncinatus-Carex bigelowii comm.;
7.7.3 Ecological remarks
7.8 Plant community of Lava field 1693 61
7.8.1 Racomitriuni lanuginosum comm.; 7.8.2 Ecological remarks
7.9 Plant communities of Trippafjallahraun 1725 63
7.9.1 Racomitrium laiiuginosum comm.; 7.9.2 Racomitriuni canescens comm.; 7.9.3 Ecological remarks
7.10 Plant communities of Lava fields 1766 (Austur-and Hringlandahraun) 65
7.10.1 Racomitrium lanuginosum comm.; 7.10.2 Racomitrium canescens comm.; 7.10.3 Ecological remarks
7.11 Plant communities of Naefurholtshraun 1845 67
7.1 1.1 Racomitrium lanuginosum comm.; 7.11.2 Racomitrium canescens comm.; 7.11.3 Oxyria digyna-
Silene niaritima comm.; 7.11.4 Ecological remarks
7.12 Plant communities of Krakatindshraun 1878 69
7.12.1 Racomitrium lanuginosum comm.; 7.12.2 Racomitrium canescens comm.;
7.12.3 Stereocaulon vesuvianum comm.: 7.12.4 Anthelia julacea - Pohlia drummondii comm.;
7.12.5 Calamagrostis stricta - Festuca rubra comm.; 7.12.6 Ecological remarks
7.13 Plant communities of Lambafitjarhraun 1913 71
7.13.1 Racomitrium lanuginosum comm.; 7.13.2 Racomitrium canescens comm.; 7.13.3 Stereocaulon
vesuvianum comm.; 7.13.4 Anthelia julacea - Pohlia drummondii comm.; 7.13.5 Ecological remarks
7.14 Plant communities of the Lava field 1947 73
7.14.1 Racomitrium lanuginosum comm.; 7.14.2 Racomitrium canescens comm.;
7.14.3 Stereocaulon vesuvianum comm.; 7.14.4 Initial stages: 7.14.5 Ecological remarks
7.15 Holes 77
7.16 Crags 78
fi The vegetation of the younger lava fields 81
8.1 Introduction 81
8.2 Lava field 1970 81
8.2.1 Colonization: 8.2.2 Remarks on the texture of the surface
8.3 Lava field 1980/81 84
9 The Racomitrium lanuginosum moss carpet 85
9.1 Introduction 85
9.2 Growth and development of Racomitrium lanuginosum 85
9.3 Succession of the Racomitrium lanuginosum carpet 88
10 Influence of tephra fall on vegetation 90
10.1 Introduction 90
10.2 Thickness and distribution of the tephra 90
10.3 Mechanical influence of tephra 91
10.4 Vegetation recovery on tephra 92
10.5 Invasion of Betula pubescens into the moss carpet 94
11 General discussion 97
11.1 Vegetation typology 97
1 1.2 Community - environment relations 98
11.3 Multivariate analysis of the eleven historical lava fields together 99
11.4 The vegetation development on the main surface 101
12 Acknowledgements 105
13 References 106
|
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| spelling | Bjarnason, Ágúst H. Verfasser aut Vegetation on lava fields in the Hekla area, Iceland Ágúst H. Bjarnason Stockholm Almqvist & Wiksell 1991 114 S. Ill., graph. Darst., Kt. txt rdacontent n rdamedia nc rdacarrier Acta phytogeografica Suecica 77 Zugl.: Uppsala, Univ., Diss., 1991 Vegetatie gtt Vulkanische bodems gtt Plant communities Iceland Hekla Region Plant ecology Iceland Hekla Region Vegetation (DE-588)4187458-4 gnd rswk-swf Hekla (DE-588)4264808-7 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Hekla (DE-588)4264808-7 g Vegetation (DE-588)4187458-4 s DE-604 Acta phytogeografica Suecica 77 (DE-604)BV035361793 77 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=003863193&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Bjarnason, Ágúst H. Vegetation on lava fields in the Hekla area, Iceland Acta phytogeografica Suecica Vegetatie gtt Vulkanische bodems gtt Plant communities Iceland Hekla Region Plant ecology Iceland Hekla Region Vegetation (DE-588)4187458-4 gnd |
| subject_GND | (DE-588)4187458-4 (DE-588)4264808-7 (DE-588)4113937-9 |
| title | Vegetation on lava fields in the Hekla area, Iceland |
| title_auth | Vegetation on lava fields in the Hekla area, Iceland |
| title_exact_search | Vegetation on lava fields in the Hekla area, Iceland |
| title_full | Vegetation on lava fields in the Hekla area, Iceland Ágúst H. Bjarnason |
| title_fullStr | Vegetation on lava fields in the Hekla area, Iceland Ágúst H. Bjarnason |
| title_full_unstemmed | Vegetation on lava fields in the Hekla area, Iceland Ágúst H. Bjarnason |
| title_short | Vegetation on lava fields in the Hekla area, Iceland |
| title_sort | vegetation on lava fields in the hekla area iceland |
| topic | Vegetatie gtt Vulkanische bodems gtt Plant communities Iceland Hekla Region Plant ecology Iceland Hekla Region Vegetation (DE-588)4187458-4 gnd |
| topic_facet | Vegetatie Vulkanische bodems Plant communities Iceland Hekla Region Plant ecology Iceland Hekla Region Vegetation Hekla Hochschulschrift |
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