Linkages between riparian invasive plants, hydromorphology and salmonid fish in Scottish rivers
Invasions by non-native species are reported as one of the greatest threats to global biodiversity, and the invasion of riparian ecosystems by invasive non-native plants (INNP) presents a common and difficult challenge for river and fishery managers. Whilst the various impacts of INNP are well-docum...
Published in: | Freshwater Biology |
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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University of Stirling
2018
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Online Access: | http://hdl.handle.net/1893/29493 http://dspace.stir.ac.uk/bitstream/1893/29493/1/Thesis_STORRE.pdf |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/29493 2023-05-15T18:09:59+02:00 Linkages between riparian invasive plants, hydromorphology and salmonid fish in Scottish rivers Seeney, Alex Bull, Colin Willby, Nigel This PhD was funded by Scottish Natural Heritage. 2018-09-27 application/pdf http://hdl.handle.net/1893/29493 http://dspace.stir.ac.uk/bitstream/1893/29493/1/Thesis_STORRE.pdf en eng University of Stirling Seeney, A, Pattison, Z, Willby, NJ, Boon, PJ, Bull, CD. Stream invertebrate diversity reduces with invasion of river banks by non‐native plants. Freshwater Biology 2019; 64: 485-496. https://doi.org/10.1111/fwb.13236 Seeney A, Eastwood S, Pattison Z, Willby N & Bull C All change at the water's edge: invasion by non-native riparian plants negatively impacts terrestrial invertebrates. Biological Invasions. 2019; 21: 1933-1946. https://doi.org/10.1007/s10530-019-01947-5 http://hdl.handle.net/1893/29493 http://dspace.stir.ac.uk/bitstream/1893/29493/1/Thesis_STORRE.pdf aquatic invertebrates invasive plants salmonids Salmo trutta Salmo salar Fallopia japonica Impatiens glandulifera terrestrial invertebrates riparian diversity Rivers Scotland Salmonidae Scotland Endangered ecosystems Invasive plants Environmental aspects Thesis or Dissertation Doctoral Doctor of Philosophy 2018 ftunivstirling https://doi.org/10.1111/fwb.13236 2022-06-13T18:45:32Z Invasions by non-native species are reported as one of the greatest threats to global biodiversity, and the invasion of riparian ecosystems by invasive non-native plants (INNP) presents a common and difficult challenge for river and fishery managers. Whilst the various impacts of INNP are well-documented in a range of global studies, the type and extent of ecological changes that riparian INNP invasions induce in invertebrate and salmonid fish communities remains poorly understood. To address these gaps in the literature, this thesis assesses: (1) how riparian INNP alter the abundance, diversity and composition of freshwater macroinvertebrate communities, in relation to environmental variables; (2) how the structure of riparian terrestrial invertebrate communities differs at heavily invaded sites, and whether there is evidence of a difference in INNP species effect and (3) how juvenile salmonids utilise the altered aquatic and terrestrial prey resources at sites with greater INNP cover, and the relative importance of INNP to prey selection in relation to population dynamics and environmental stressors. Recent field survey data was used to quantify changes in the freshwater and terrestrial invertebrate communities of 24 low order streams in central Scotland. Analyses indicated that whilst greater INNP cover reduced local freshwater macroinvertebrate diversity, their effects were generally subordinate to that of physicochemical variables, though there was evidence of a legacy effect of invasion that presents a constant pressure on freshwater macroinvertebrate communities. Similarly, greater INNP cover reduced terrestrial morphospecies diversity, but also reduced abundance and increased spatial heterogeneity through loss of species at the site scale. INNP cover was found to be the strongest predictor across all assessments of terrestrial invertebrate communities. Juvenile salmonids were observed to change their predatory selection of two taxonomic orders at more heavily invaded sites, but broadly changed their ... Doctoral or Postdoctoral Thesis Salmo salar University of Stirling: Stirling Digital Research Repository Freshwater Biology 64 3 485 496 |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
topic |
aquatic invertebrates invasive plants salmonids Salmo trutta Salmo salar Fallopia japonica Impatiens glandulifera terrestrial invertebrates riparian diversity Rivers Scotland Salmonidae Scotland Endangered ecosystems Invasive plants Environmental aspects |
spellingShingle |
aquatic invertebrates invasive plants salmonids Salmo trutta Salmo salar Fallopia japonica Impatiens glandulifera terrestrial invertebrates riparian diversity Rivers Scotland Salmonidae Scotland Endangered ecosystems Invasive plants Environmental aspects Seeney, Alex Linkages between riparian invasive plants, hydromorphology and salmonid fish in Scottish rivers |
topic_facet |
aquatic invertebrates invasive plants salmonids Salmo trutta Salmo salar Fallopia japonica Impatiens glandulifera terrestrial invertebrates riparian diversity Rivers Scotland Salmonidae Scotland Endangered ecosystems Invasive plants Environmental aspects |
description |
Invasions by non-native species are reported as one of the greatest threats to global biodiversity, and the invasion of riparian ecosystems by invasive non-native plants (INNP) presents a common and difficult challenge for river and fishery managers. Whilst the various impacts of INNP are well-documented in a range of global studies, the type and extent of ecological changes that riparian INNP invasions induce in invertebrate and salmonid fish communities remains poorly understood. To address these gaps in the literature, this thesis assesses: (1) how riparian INNP alter the abundance, diversity and composition of freshwater macroinvertebrate communities, in relation to environmental variables; (2) how the structure of riparian terrestrial invertebrate communities differs at heavily invaded sites, and whether there is evidence of a difference in INNP species effect and (3) how juvenile salmonids utilise the altered aquatic and terrestrial prey resources at sites with greater INNP cover, and the relative importance of INNP to prey selection in relation to population dynamics and environmental stressors. Recent field survey data was used to quantify changes in the freshwater and terrestrial invertebrate communities of 24 low order streams in central Scotland. Analyses indicated that whilst greater INNP cover reduced local freshwater macroinvertebrate diversity, their effects were generally subordinate to that of physicochemical variables, though there was evidence of a legacy effect of invasion that presents a constant pressure on freshwater macroinvertebrate communities. Similarly, greater INNP cover reduced terrestrial morphospecies diversity, but also reduced abundance and increased spatial heterogeneity through loss of species at the site scale. INNP cover was found to be the strongest predictor across all assessments of terrestrial invertebrate communities. Juvenile salmonids were observed to change their predatory selection of two taxonomic orders at more heavily invaded sites, but broadly changed their ... |
author2 |
Bull, Colin Willby, Nigel This PhD was funded by Scottish Natural Heritage. |
format |
Doctoral or Postdoctoral Thesis |
author |
Seeney, Alex |
author_facet |
Seeney, Alex |
author_sort |
Seeney, Alex |
title |
Linkages between riparian invasive plants, hydromorphology and salmonid fish in Scottish rivers |
title_short |
Linkages between riparian invasive plants, hydromorphology and salmonid fish in Scottish rivers |
title_full |
Linkages between riparian invasive plants, hydromorphology and salmonid fish in Scottish rivers |
title_fullStr |
Linkages between riparian invasive plants, hydromorphology and salmonid fish in Scottish rivers |
title_full_unstemmed |
Linkages between riparian invasive plants, hydromorphology and salmonid fish in Scottish rivers |
title_sort |
linkages between riparian invasive plants, hydromorphology and salmonid fish in scottish rivers |
publisher |
University of Stirling |
publishDate |
2018 |
url |
http://hdl.handle.net/1893/29493 http://dspace.stir.ac.uk/bitstream/1893/29493/1/Thesis_STORRE.pdf |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_relation |
Seeney, A, Pattison, Z, Willby, NJ, Boon, PJ, Bull, CD. Stream invertebrate diversity reduces with invasion of river banks by non‐native plants. Freshwater Biology 2019; 64: 485-496. https://doi.org/10.1111/fwb.13236 Seeney A, Eastwood S, Pattison Z, Willby N & Bull C All change at the water's edge: invasion by non-native riparian plants negatively impacts terrestrial invertebrates. Biological Invasions. 2019; 21: 1933-1946. https://doi.org/10.1007/s10530-019-01947-5 http://hdl.handle.net/1893/29493 http://dspace.stir.ac.uk/bitstream/1893/29493/1/Thesis_STORRE.pdf |
op_doi |
https://doi.org/10.1111/fwb.13236 |
container_title |
Freshwater Biology |
container_volume |
64 |
container_issue |
3 |
container_start_page |
485 |
op_container_end_page |
496 |
_version_ |
1766182708049870848 |