Longevity, growth and community ecology of invasive Poa annua across environmental gradients in the subantarctic
Poa annua is a cosmopolitan weed in turf grass. It is a widespread non-native species in the subantarctic and also occurs in the Antarctic Peninsula. It has highly variable morphology, longevity and reproductive capacity across both its invaded and native range. Little is known about the ecology of...
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ftunivnewengland:oai:rune.une.edu.au:1959.11/23137 2023-08-27T04:05:55+02:00 Longevity, growth and community ecology of invasive Poa annua across environmental gradients in the subantarctic Williams, Laura K Shaw, Justine Sindel, Brian M School of Environmental and Rural Science orcid:0000-0002-4100-218X Wilson, Susan C orcid:0000-0002-3409-0847 Kristiansen, Paul orcid:0000-0003-2116-0663 2018 https://hdl.handle.net/1959.11/23137 en eng Elsevier GmbH 10.1016/j.baae.2018.02.003 https://hdl.handle.net/1959.11/23137 une:23321 Invasive Species Ecology Environmental Management Journal Article 2018 ftunivnewengland 2023-08-10T18:55:53Z Poa annua is a cosmopolitan weed in turf grass. It is a widespread non-native species in the subantarctic and also occurs in the Antarctic Peninsula. It has highly variable morphology, longevity and reproductive capacity across both its invaded and native range. Little is known about the ecology of P. annua in the subantarctic, particularly its longevity, morphological variation across small spatial scales and competitive ability. We monitored individual P. annua plants on subantarctic Macquarie Island to assess their longevity; quantified morphology and biomass allocation across environmental gradients; and assessed community diversity indices in areas of varying P. annua density. We show that P. annua plants on Macquarie Island are perennial, and their morphology varies with elevation, animal disturbance and soil properties. At low altitude, coastal sites with high animal disturbance and deep, sandy soils, P. annua plants are larger and native plant diversity is low. Conversely, at high altitude sites P. annua plants are smaller and the diversity of native species is not reduced. This new information informs why P. annua is the most successful plant invader in the subantarctic and quantifies some key characteristics enabling an invasive species to function well beyond its natural range. Community ecology theory can also explain patterns in the ecology of P. annua on Macquarie Island. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Macquarie Island Research UNE - University of New England at Armidale, NSW Australia Antarctic Antarctic Peninsula The Antarctic |
institution |
Open Polar |
collection |
Research UNE - University of New England at Armidale, NSW Australia |
op_collection_id |
ftunivnewengland |
language |
English |
topic |
Invasive Species Ecology Environmental Management |
spellingShingle |
Invasive Species Ecology Environmental Management Williams, Laura K Shaw, Justine Sindel, Brian M School of Environmental and Rural Science orcid:0000-0002-4100-218X Wilson, Susan C orcid:0000-0002-3409-0847 Kristiansen, Paul orcid:0000-0003-2116-0663 Longevity, growth and community ecology of invasive Poa annua across environmental gradients in the subantarctic |
topic_facet |
Invasive Species Ecology Environmental Management |
description |
Poa annua is a cosmopolitan weed in turf grass. It is a widespread non-native species in the subantarctic and also occurs in the Antarctic Peninsula. It has highly variable morphology, longevity and reproductive capacity across both its invaded and native range. Little is known about the ecology of P. annua in the subantarctic, particularly its longevity, morphological variation across small spatial scales and competitive ability. We monitored individual P. annua plants on subantarctic Macquarie Island to assess their longevity; quantified morphology and biomass allocation across environmental gradients; and assessed community diversity indices in areas of varying P. annua density. We show that P. annua plants on Macquarie Island are perennial, and their morphology varies with elevation, animal disturbance and soil properties. At low altitude, coastal sites with high animal disturbance and deep, sandy soils, P. annua plants are larger and native plant diversity is low. Conversely, at high altitude sites P. annua plants are smaller and the diversity of native species is not reduced. This new information informs why P. annua is the most successful plant invader in the subantarctic and quantifies some key characteristics enabling an invasive species to function well beyond its natural range. Community ecology theory can also explain patterns in the ecology of P. annua on Macquarie Island. |
format |
Article in Journal/Newspaper |
author |
Williams, Laura K Shaw, Justine Sindel, Brian M School of Environmental and Rural Science orcid:0000-0002-4100-218X Wilson, Susan C orcid:0000-0002-3409-0847 Kristiansen, Paul orcid:0000-0003-2116-0663 |
author_facet |
Williams, Laura K Shaw, Justine Sindel, Brian M School of Environmental and Rural Science orcid:0000-0002-4100-218X Wilson, Susan C orcid:0000-0002-3409-0847 Kristiansen, Paul orcid:0000-0003-2116-0663 |
author_sort |
Williams, Laura K |
title |
Longevity, growth and community ecology of invasive Poa annua across environmental gradients in the subantarctic |
title_short |
Longevity, growth and community ecology of invasive Poa annua across environmental gradients in the subantarctic |
title_full |
Longevity, growth and community ecology of invasive Poa annua across environmental gradients in the subantarctic |
title_fullStr |
Longevity, growth and community ecology of invasive Poa annua across environmental gradients in the subantarctic |
title_full_unstemmed |
Longevity, growth and community ecology of invasive Poa annua across environmental gradients in the subantarctic |
title_sort |
longevity, growth and community ecology of invasive poa annua across environmental gradients in the subantarctic |
publisher |
Elsevier GmbH |
publishDate |
2018 |
url |
https://hdl.handle.net/1959.11/23137 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Macquarie Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Macquarie Island |
op_relation |
10.1016/j.baae.2018.02.003 https://hdl.handle.net/1959.11/23137 une:23321 |
_version_ |
1775346643302875136 |