Allochthonous Allelopathy. Effects of Empetrum nigrum chemical interference on plant development
The dwafshrub Empetrum nigrum uses phenolic compounds exuded by its leaves to depress the germination and growth of its surroundings. The allelopathic effect has, only been studied in areas immediately surrounding the plant (autochthonous allelopathy) but not in an open system apptoach that takes in...
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UiT Norges arktiske universitet
2016
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ftunivtroemsoe:oai:munin.uit.no:10037/18345 2023-05-15T16:06:03+02:00 Allochthonous Allelopathy. Effects of Empetrum nigrum chemical interference on plant development Pilsbacher, Anna Katharina 2016-05-20 https://hdl.handle.net/10037/18345 eng eng UiT Norges arktiske universitet UiT The Arctic University of Norway https://hdl.handle.net/10037/18345 openAccess Copyright 2016 The Author(s) VDP::Mathematics and natural science:400::Zoology and botany: 480::Ecology: 488/Allelopathy VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488/Allelopati BIO-3950 Master thesis Mastergradsoppgave 2016 ftunivtroemsoe 2021-06-25T17:57:27Z The dwafshrub Empetrum nigrum uses phenolic compounds exuded by its leaves to depress the germination and growth of its surroundings. The allelopathic effect has, only been studied in areas immediately surrounding the plant (autochthonous allelopathy) but not in an open system apptoach that takes into account that a multitude of EMpetrum nigrum leaves get introduced into new environments through wind, rain or snowmelt (allochthonous allelopathy). An observational study of 51 snowbed in Northern Norway found an accumulation of Empetrum nirgrum leaves on every one and in 96% of examined plots. A growth and germination study grew 10 plant species native to either heath or snowbeds in soils mixed with varying concentrations of Empetrum nigrum leaves.Germination success was found to be mainly species specific and unaffected by leaf abundance for all but the highest concentration. Plant height and secondary leaf development continuously (p=>.0001 for height and leaf number) decreased with increasing abundance of Empetrum leaves in the soil, the decrease being most pronounced between the control group and plants at the lowest concentration suggesting a threshold effect. The results suggest that the subsidy of allochemicals derived from Empetrum nigrum leaves into areas previously unaffected by the plant could lead to ecosystem degradation in those environments. This is especially pertinent to snowbed environments that already face environmental stress in terms of a warming climate. Master Thesis Empetrum nigrum Northern Norway University of Tromsø: Munin Open Research Archive Norway |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science:400::Zoology and botany: 480::Ecology: 488/Allelopathy VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488/Allelopati BIO-3950 |
spellingShingle |
VDP::Mathematics and natural science:400::Zoology and botany: 480::Ecology: 488/Allelopathy VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488/Allelopati BIO-3950 Pilsbacher, Anna Katharina Allochthonous Allelopathy. Effects of Empetrum nigrum chemical interference on plant development |
topic_facet |
VDP::Mathematics and natural science:400::Zoology and botany: 480::Ecology: 488/Allelopathy VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488/Allelopati BIO-3950 |
description |
The dwafshrub Empetrum nigrum uses phenolic compounds exuded by its leaves to depress the germination and growth of its surroundings. The allelopathic effect has, only been studied in areas immediately surrounding the plant (autochthonous allelopathy) but not in an open system apptoach that takes into account that a multitude of EMpetrum nigrum leaves get introduced into new environments through wind, rain or snowmelt (allochthonous allelopathy). An observational study of 51 snowbed in Northern Norway found an accumulation of Empetrum nirgrum leaves on every one and in 96% of examined plots. A growth and germination study grew 10 plant species native to either heath or snowbeds in soils mixed with varying concentrations of Empetrum nigrum leaves.Germination success was found to be mainly species specific and unaffected by leaf abundance for all but the highest concentration. Plant height and secondary leaf development continuously (p=>.0001 for height and leaf number) decreased with increasing abundance of Empetrum leaves in the soil, the decrease being most pronounced between the control group and plants at the lowest concentration suggesting a threshold effect. The results suggest that the subsidy of allochemicals derived from Empetrum nigrum leaves into areas previously unaffected by the plant could lead to ecosystem degradation in those environments. This is especially pertinent to snowbed environments that already face environmental stress in terms of a warming climate. |
format |
Master Thesis |
author |
Pilsbacher, Anna Katharina |
author_facet |
Pilsbacher, Anna Katharina |
author_sort |
Pilsbacher, Anna Katharina |
title |
Allochthonous Allelopathy. Effects of Empetrum nigrum chemical interference on plant development |
title_short |
Allochthonous Allelopathy. Effects of Empetrum nigrum chemical interference on plant development |
title_full |
Allochthonous Allelopathy. Effects of Empetrum nigrum chemical interference on plant development |
title_fullStr |
Allochthonous Allelopathy. Effects of Empetrum nigrum chemical interference on plant development |
title_full_unstemmed |
Allochthonous Allelopathy. Effects of Empetrum nigrum chemical interference on plant development |
title_sort |
allochthonous allelopathy. effects of empetrum nigrum chemical interference on plant development |
publisher |
UiT Norges arktiske universitet |
publishDate |
2016 |
url |
https://hdl.handle.net/10037/18345 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Empetrum nigrum Northern Norway |
genre_facet |
Empetrum nigrum Northern Norway |
op_relation |
https://hdl.handle.net/10037/18345 |
op_rights |
openAccess Copyright 2016 The Author(s) |
_version_ |
1766401958505086976 |