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Ecology and population genetics of the neophyte alien, Hoary Mustard (Hirschfeldia incana (L.) Lagreze-Fossat). / Reshma Patel

Swansea University Author: Reshma Patel

Abstract

The invasion of natural habitats by alien plant species is now recognised as one of the most important factors contributing to the current loss of biodiversity in our planet. In the UK alone there are now approximately equivalent numbers of alien and native plant species (Stace, 1997), and a small n...

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Published: 2004
Institution: Swansea University
Degree level: Master of Philosophy
Degree name: M.Phil
URI: https://cronfa.swan.ac.uk/Record/cronfa42754
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spelling 2018-08-16T14:39:02.9105634 v2 42754 2018-08-02 Ecology and population genetics of the neophyte alien, Hoary Mustard (Hirschfeldia incana (L.) Lagreze-Fossat). b19689537c12b18a81f22625dcf9ad91 NULL Reshma Patel Reshma Patel true true 2018-08-02 The invasion of natural habitats by alien plant species is now recognised as one of the most important factors contributing to the current loss of biodiversity in our planet. In the UK alone there are now approximately equivalent numbers of alien and native plant species (Stace, 1997), and a small number of these are spreading in rural and urban areas. This study looked at Hirschfeldia incana (L.) Lagreze-Fossat belonging to the family Brassicaceae. Commonly known as Hoary Mustard, it is an established wool, grain and bird-seed alien in the UK. H. incana is native to southwest Europe, the Mediterranean region and southwest Asia. In the UK, this neophyte alien has shown a significant (p=0.004), exponential increase in its spread from 1930 to the year 2000. In this investigation a number of H. incana populations in South Wales were studied, in terms of the communities they were associated with, in semi-natural and natural habitats. The three species most commonly associated with H. incana were Senecio jacohaea, Holcus lanatus and Medicago lupulina, all native to the British flora. Cluster analysis and TWINSPAN indicated three major types of habitats, open urban gap habitat, closed habitat (semi-natural) and sand dune habitat (natural). Species indicative of the three habitats were Mycelis mural is (open urban gap). Euphorbia peplus (closed) and Ammophila arenaria (sand dune). Random amplified polymorphic DNA (RAPD) data was collected for England, Wales and southern European populations. Estimated genetic diversities were calculated using Shannon's Index, and showed that diversity was similar in native and alien populations (p=0.271 for H'j, and p= 0.018 for Hj). The genetic diversities between populations compared well with those for other outcrossing plants. The distinct clusters of populations found in the British Isles together with the evidence obtained from the RAPD data suggests that founding populations probably originated from multiple source populations. E-Thesis Ecology.;Botany. 31 12 2004 2004-12-31 COLLEGE NANME Biosciences COLLEGE CODE Swansea University Master of Philosophy M.Phil 2018-08-16T14:39:02.9105634 2018-08-02T16:24:30.3673959 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Reshma Patel NULL 1 0042754-02082018162519.pdf 10807523.pdf 2018-08-02T16:25:19.3530000 Output 12380959 application/pdf E-Thesis true 2018-08-02T16:25:19.3530000 false
title Ecology and population genetics of the neophyte alien, Hoary Mustard (Hirschfeldia incana (L.) Lagreze-Fossat).
spellingShingle Ecology and population genetics of the neophyte alien, Hoary Mustard (Hirschfeldia incana (L.) Lagreze-Fossat).
Reshma Patel
title_short Ecology and population genetics of the neophyte alien, Hoary Mustard (Hirschfeldia incana (L.) Lagreze-Fossat).
title_full Ecology and population genetics of the neophyte alien, Hoary Mustard (Hirschfeldia incana (L.) Lagreze-Fossat).
title_fullStr Ecology and population genetics of the neophyte alien, Hoary Mustard (Hirschfeldia incana (L.) Lagreze-Fossat).
title_full_unstemmed Ecology and population genetics of the neophyte alien, Hoary Mustard (Hirschfeldia incana (L.) Lagreze-Fossat).
title_sort Ecology and population genetics of the neophyte alien, Hoary Mustard (Hirschfeldia incana (L.) Lagreze-Fossat).
author_id_str_mv b19689537c12b18a81f22625dcf9ad91
author_id_fullname_str_mv b19689537c12b18a81f22625dcf9ad91_***_Reshma Patel
author Reshma Patel
author2 Reshma Patel
format E-Thesis
publishDate 2004
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
description The invasion of natural habitats by alien plant species is now recognised as one of the most important factors contributing to the current loss of biodiversity in our planet. In the UK alone there are now approximately equivalent numbers of alien and native plant species (Stace, 1997), and a small number of these are spreading in rural and urban areas. This study looked at Hirschfeldia incana (L.) Lagreze-Fossat belonging to the family Brassicaceae. Commonly known as Hoary Mustard, it is an established wool, grain and bird-seed alien in the UK. H. incana is native to southwest Europe, the Mediterranean region and southwest Asia. In the UK, this neophyte alien has shown a significant (p=0.004), exponential increase in its spread from 1930 to the year 2000. In this investigation a number of H. incana populations in South Wales were studied, in terms of the communities they were associated with, in semi-natural and natural habitats. The three species most commonly associated with H. incana were Senecio jacohaea, Holcus lanatus and Medicago lupulina, all native to the British flora. Cluster analysis and TWINSPAN indicated three major types of habitats, open urban gap habitat, closed habitat (semi-natural) and sand dune habitat (natural). Species indicative of the three habitats were Mycelis mural is (open urban gap). Euphorbia peplus (closed) and Ammophila arenaria (sand dune). Random amplified polymorphic DNA (RAPD) data was collected for England, Wales and southern European populations. Estimated genetic diversities were calculated using Shannon's Index, and showed that diversity was similar in native and alien populations (p=0.271 for H'j, and p= 0.018 for Hj). The genetic diversities between populations compared well with those for other outcrossing plants. The distinct clusters of populations found in the British Isles together with the evidence obtained from the RAPD data suggests that founding populations probably originated from multiple source populations.
published_date 2004-12-31T03:53:35Z
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score 11.012678

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