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The effects of climate change on harmful algal blooms and plankton communities in the NE Atlantic. / Stephanie Louise Hinder

Swansea University Author: Stephanie Louise Hinder

Abstract

Climate change has a profound impact on the phenology and abundance o f plankton in the NE Atlantic and North Sea. There is concern that harmful algal bloom (HAB) species may increase, accompanied by negative socio-economic impacts, including threats to human health and marine harvesting. We reviewe...

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Published: 2012
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
URI: https://cronfa.swan.ac.uk/Record/cronfa42990
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last_indexed 2019-10-21T16:48:49Z
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spelling 2018-08-29T14:40:46.6691629 v2 42990 2018-08-02 The effects of climate change on harmful algal blooms and plankton communities in the NE Atlantic. 9cab06800a180e4cf08ef9638ac126a5 NULL Stephanie Louise Hinder Stephanie Louise Hinder true true 2018-08-02 Climate change has a profound impact on the phenology and abundance o f plankton in the NE Atlantic and North Sea. There is concern that harmful algal bloom (HAB) species may increase, accompanied by negative socio-economic impacts, including threats to human health and marine harvesting. We reviewed historical major UK outbreaks o f poisoning and attempted to examine the epidemiology on a finer scale by linkage o f hospital admissions, GP and pathology records. As expected the incidence o f shellfish poisonings was very low but accurate identification o f poisoning was generally unreliable. The current UK shellfish monitoring programme is the key indicator for monitoring trends in the risk o f human exposure.Using the Continuous Plankton Recorder (CPR) survey, we mapped spatial and temporal trends o f various phytoplankton, including HAB species, and zooplankton (Tintinnids and Calanus). We found fundamental shifts in the relative abundance of diatoms versus dinoflagellates, with a dramatic dinoflagellate decline in recent years. Northward shifts in abundance were found for some Tintinnid and Calanus taxa. Using criteria o f statistical causality, these changes were linked to climate, in particular sea surface temperature and increasingly windy conditions in the summer, with a notable non-linear interaction between these factors. Focusing on Calanus, we showed the strength o f statistical links between abundance and climate variables can wax and wane as the time series lengthens. We found tentative evidence for adaptation o f Calanus to climate change, but not at a level that could reverse overall long-term patterns.Links with climate are often argued to be proxies for unobserved mechanisms that determine species abundance, such as stratification. We developed a new stratification index, covering the whole NE Atlantic from 1970 to 2009. We propose that this has wide applicability in marine climate change studies. Throughout, our work demonstrates the importance o f consistent long-term ecological survey data. E-Thesis Atlantic Ocean, North Sea, climate change, plankton, algal bloom, socio-economic impact, ecological survey 31 12 2012 2012-12-31 COLLEGE NANME Swansea University Medical School COLLEGE CODE Swansea University Doctoral Ph.D 2018-08-29T14:40:46.6691629 2018-08-02T16:24:30.9914044 Faculty of Medicine, Health and Life Sciences Swansea University Medical School - Medicine Stephanie Louise Hinder NULL 1 0042990-02082018162537.pdf 10821380.pdf 2018-08-02T16:25:37.9470000 Output 9133987 application/pdf E-Thesis true 2018-08-02T16:25:37.9470000 false
title The effects of climate change on harmful algal blooms and plankton communities in the NE Atlantic.
spellingShingle The effects of climate change on harmful algal blooms and plankton communities in the NE Atlantic.
Stephanie Louise Hinder
title_short The effects of climate change on harmful algal blooms and plankton communities in the NE Atlantic.
title_full The effects of climate change on harmful algal blooms and plankton communities in the NE Atlantic.
title_fullStr The effects of climate change on harmful algal blooms and plankton communities in the NE Atlantic.
title_full_unstemmed The effects of climate change on harmful algal blooms and plankton communities in the NE Atlantic.
title_sort The effects of climate change on harmful algal blooms and plankton communities in the NE Atlantic.
author_id_str_mv 9cab06800a180e4cf08ef9638ac126a5
author_id_fullname_str_mv 9cab06800a180e4cf08ef9638ac126a5_***_Stephanie Louise Hinder
author Stephanie Louise Hinder
author2 Stephanie Louise Hinder
format E-Thesis
publishDate 2012
institution Swansea University
college_str Faculty of Medicine, Health and Life Sciences
hierarchytype
hierarchy_top_id facultyofmedicinehealthandlifesciences
hierarchy_top_title Faculty of Medicine, Health and Life Sciences
hierarchy_parent_id facultyofmedicinehealthandlifesciences
hierarchy_parent_title Faculty of Medicine, Health and Life Sciences
department_str Swansea University Medical School - Medicine{{{_:::_}}}Faculty of Medicine, Health and Life Sciences{{{_:::_}}}Swansea University Medical School - Medicine
document_store_str 1
active_str 0
description Climate change has a profound impact on the phenology and abundance o f plankton in the NE Atlantic and North Sea. There is concern that harmful algal bloom (HAB) species may increase, accompanied by negative socio-economic impacts, including threats to human health and marine harvesting. We reviewed historical major UK outbreaks o f poisoning and attempted to examine the epidemiology on a finer scale by linkage o f hospital admissions, GP and pathology records. As expected the incidence o f shellfish poisonings was very low but accurate identification o f poisoning was generally unreliable. The current UK shellfish monitoring programme is the key indicator for monitoring trends in the risk o f human exposure.Using the Continuous Plankton Recorder (CPR) survey, we mapped spatial and temporal trends o f various phytoplankton, including HAB species, and zooplankton (Tintinnids and Calanus). We found fundamental shifts in the relative abundance of diatoms versus dinoflagellates, with a dramatic dinoflagellate decline in recent years. Northward shifts in abundance were found for some Tintinnid and Calanus taxa. Using criteria o f statistical causality, these changes were linked to climate, in particular sea surface temperature and increasingly windy conditions in the summer, with a notable non-linear interaction between these factors. Focusing on Calanus, we showed the strength o f statistical links between abundance and climate variables can wax and wane as the time series lengthens. We found tentative evidence for adaptation o f Calanus to climate change, but not at a level that could reverse overall long-term patterns.Links with climate are often argued to be proxies for unobserved mechanisms that determine species abundance, such as stratification. We developed a new stratification index, covering the whole NE Atlantic from 1970 to 2009. We propose that this has wide applicability in marine climate change studies. Throughout, our work demonstrates the importance o f consistent long-term ecological survey data.
published_date 2012-12-31T03:54:02Z
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score 11.016235

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