Soil seedbank composition and dynamics across alpine summits in south-eastern Australia
Alpine soil seedbanks are generally regarded as small and unimportant to regeneration. Here, we investigate for the first time the composition of the readily germinable soil seedbank across alpine summits in south-eastern Australia. We aimed to compare the species in the seedbank with the standing v...
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ftdeakinunifig:oai:figshare.com:article/20798947 2023-05-15T15:12:15+02:00 Soil seedbank composition and dynamics across alpine summits in south-eastern Australia Susanna Venn J W Morgan 2010-08-04T00:00:00Z http://hdl.handle.net/10536/DRO/DU:30114247 https://figshare.com/articles/journal_contribution/Soil_seedbank_composition_and_dynamics_across_alpine_summits_in_south-eastern_Australia/20798947 unknown http://hdl.handle.net/10536/DRO/DU:30114247 https://figshare.com/articles/journal_contribution/Soil_seedbank_composition_and_dynamics_across_alpine_summits_in_south-eastern_Australia/20798947 All Rights Reserved Microbiology Ecology Plant Biology Science & Technology Life Sciences & Biomedicine Plant Sciences SUB-ARCTIC FINLAND ALTITUDINAL GRADIENT STANDING VEGETATION PLANT-COMMUNITIES SEEDLING EMERGENCE BANK REGENERATION DISTURBANCE FIRE ESTABLISHMENT Text Journal contribution 2010 ftdeakinunifig 2022-11-17T19:56:19Z Alpine soil seedbanks are generally regarded as small and unimportant to regeneration. Here, we investigate for the first time the composition of the readily germinable soil seedbank across alpine summits in south-eastern Australia. We aimed to compare the species in the seedbank with the standing vegetation, show seasonal variations in seedbank composition and identify regeneration strategies of alpine seedbank species. By using standard glasshouse and cold-stratification germination techniques, the germinable soil seedbank across the study region was found to comprise 39 species from 25 families, with species from the Asteraceae the most common. Persistent seedbanks were found across all eight alpine summits (1668-1970m), comparable in seed density (150±27 to 1330±294 per m2) with those of other alpine areas in the northern and southern hemispheres. The density of germinable seeds varied widely among sites and between collection times (autumn, spring) and there were no trends in seed density with altitude. The qualitative and quantitative similarity between the seedbank species and the standing vegetation was low. Correlations between the proportions of species in regeneration categories (from obligate seeders, through to vegetative regenerators) in the standing vegetation and the seedbank were also poor. Our results indicate a divergence between the species in the current standing vegetation and those present in the readily germinable soil seed bank. The current patterns and predominance of seed-regenerating species in the seedbank indicate that these species may have an important role to play in regulating and contributing to future changes in the vegetation assemblage. © 2010 CSIRO. Other Non-Article Part of Journal/Newspaper Arctic DRO - Deakin Research Online Arctic |
institution |
Open Polar |
collection |
DRO - Deakin Research Online |
op_collection_id |
ftdeakinunifig |
language |
unknown |
topic |
Microbiology Ecology Plant Biology Science & Technology Life Sciences & Biomedicine Plant Sciences SUB-ARCTIC FINLAND ALTITUDINAL GRADIENT STANDING VEGETATION PLANT-COMMUNITIES SEEDLING EMERGENCE BANK REGENERATION DISTURBANCE FIRE ESTABLISHMENT |
spellingShingle |
Microbiology Ecology Plant Biology Science & Technology Life Sciences & Biomedicine Plant Sciences SUB-ARCTIC FINLAND ALTITUDINAL GRADIENT STANDING VEGETATION PLANT-COMMUNITIES SEEDLING EMERGENCE BANK REGENERATION DISTURBANCE FIRE ESTABLISHMENT Susanna Venn J W Morgan Soil seedbank composition and dynamics across alpine summits in south-eastern Australia |
topic_facet |
Microbiology Ecology Plant Biology Science & Technology Life Sciences & Biomedicine Plant Sciences SUB-ARCTIC FINLAND ALTITUDINAL GRADIENT STANDING VEGETATION PLANT-COMMUNITIES SEEDLING EMERGENCE BANK REGENERATION DISTURBANCE FIRE ESTABLISHMENT |
description |
Alpine soil seedbanks are generally regarded as small and unimportant to regeneration. Here, we investigate for the first time the composition of the readily germinable soil seedbank across alpine summits in south-eastern Australia. We aimed to compare the species in the seedbank with the standing vegetation, show seasonal variations in seedbank composition and identify regeneration strategies of alpine seedbank species. By using standard glasshouse and cold-stratification germination techniques, the germinable soil seedbank across the study region was found to comprise 39 species from 25 families, with species from the Asteraceae the most common. Persistent seedbanks were found across all eight alpine summits (1668-1970m), comparable in seed density (150±27 to 1330±294 per m2) with those of other alpine areas in the northern and southern hemispheres. The density of germinable seeds varied widely among sites and between collection times (autumn, spring) and there were no trends in seed density with altitude. The qualitative and quantitative similarity between the seedbank species and the standing vegetation was low. Correlations between the proportions of species in regeneration categories (from obligate seeders, through to vegetative regenerators) in the standing vegetation and the seedbank were also poor. Our results indicate a divergence between the species in the current standing vegetation and those present in the readily germinable soil seed bank. The current patterns and predominance of seed-regenerating species in the seedbank indicate that these species may have an important role to play in regulating and contributing to future changes in the vegetation assemblage. © 2010 CSIRO. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Susanna Venn J W Morgan |
author_facet |
Susanna Venn J W Morgan |
author_sort |
Susanna Venn |
title |
Soil seedbank composition and dynamics across alpine summits in south-eastern Australia |
title_short |
Soil seedbank composition and dynamics across alpine summits in south-eastern Australia |
title_full |
Soil seedbank composition and dynamics across alpine summits in south-eastern Australia |
title_fullStr |
Soil seedbank composition and dynamics across alpine summits in south-eastern Australia |
title_full_unstemmed |
Soil seedbank composition and dynamics across alpine summits in south-eastern Australia |
title_sort |
soil seedbank composition and dynamics across alpine summits in south-eastern australia |
publishDate |
2010 |
url |
http://hdl.handle.net/10536/DRO/DU:30114247 https://figshare.com/articles/journal_contribution/Soil_seedbank_composition_and_dynamics_across_alpine_summits_in_south-eastern_Australia/20798947 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
http://hdl.handle.net/10536/DRO/DU:30114247 https://figshare.com/articles/journal_contribution/Soil_seedbank_composition_and_dynamics_across_alpine_summits_in_south-eastern_Australia/20798947 |
op_rights |
All Rights Reserved |
_version_ |
1766342955274076160 |