Effects of climate change on two species of foundational brown algae, Nereocystis luetkeana and Fucus gardneri, within the Salish Sea
Ocean acidification and warming have large-scale impacts on marine organisms and ecosystems. To evaluate effects of these stressors, two foundational algal species in the Salish Sea were chosen, Fucus gardneri and Nereocystis luetkeana. Using Fucus, we evaluated how a wide range of pH levels (8.0-6....
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ftsimonfu:oai:summit.sfu.ca:21327 2023-05-15T17:51:08+02:00 Effects of climate change on two species of foundational brown algae, Nereocystis luetkeana and Fucus gardneri, within the Salish Sea Schiltroth, Braeden 2021-01-22 http://summit.sfu.ca/item/21327 unknown etd21257 http://summit.sfu.ca/item/21327 Thesis 2021 ftsimonfu 2022-04-07T18:43:56Z Ocean acidification and warming have large-scale impacts on marine organisms and ecosystems. To evaluate effects of these stressors, two foundational algal species in the Salish Sea were chosen, Fucus gardneri and Nereocystis luetkeana. Using Fucus, we evaluated how a wide range of pH levels (8.0-6.0) impacts embryonic development. During exposure to acidic conditions, embryos were capable of germination and forming a rhizoid on time. However, rhizoid elongation was significantly reduced. In a second study, we found that Nereocystis zoospores developed normally when incubated at 10 or 15°C. However, significant reductions in germination were observed when zoospores were exposed to 17.5°C while many lysed at 20°C. In addition, more of the N. luetkeana sampled from a population growing in the warmer region (Stanley Park) were able to maintain low levels of reactive oxygen species (ROS) when exposed to 17.5°C than N. luetkeana collected from a population living at a cooler site (French Beach). Thesis Ocean acidification Summit - SFU Research Repository (Simon Fraser University) |
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Summit - SFU Research Repository (Simon Fraser University) |
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description |
Ocean acidification and warming have large-scale impacts on marine organisms and ecosystems. To evaluate effects of these stressors, two foundational algal species in the Salish Sea were chosen, Fucus gardneri and Nereocystis luetkeana. Using Fucus, we evaluated how a wide range of pH levels (8.0-6.0) impacts embryonic development. During exposure to acidic conditions, embryos were capable of germination and forming a rhizoid on time. However, rhizoid elongation was significantly reduced. In a second study, we found that Nereocystis zoospores developed normally when incubated at 10 or 15°C. However, significant reductions in germination were observed when zoospores were exposed to 17.5°C while many lysed at 20°C. In addition, more of the N. luetkeana sampled from a population growing in the warmer region (Stanley Park) were able to maintain low levels of reactive oxygen species (ROS) when exposed to 17.5°C than N. luetkeana collected from a population living at a cooler site (French Beach). |
format |
Thesis |
author |
Schiltroth, Braeden |
spellingShingle |
Schiltroth, Braeden Effects of climate change on two species of foundational brown algae, Nereocystis luetkeana and Fucus gardneri, within the Salish Sea |
author_facet |
Schiltroth, Braeden |
author_sort |
Schiltroth, Braeden |
title |
Effects of climate change on two species of foundational brown algae, Nereocystis luetkeana and Fucus gardneri, within the Salish Sea |
title_short |
Effects of climate change on two species of foundational brown algae, Nereocystis luetkeana and Fucus gardneri, within the Salish Sea |
title_full |
Effects of climate change on two species of foundational brown algae, Nereocystis luetkeana and Fucus gardneri, within the Salish Sea |
title_fullStr |
Effects of climate change on two species of foundational brown algae, Nereocystis luetkeana and Fucus gardneri, within the Salish Sea |
title_full_unstemmed |
Effects of climate change on two species of foundational brown algae, Nereocystis luetkeana and Fucus gardneri, within the Salish Sea |
title_sort |
effects of climate change on two species of foundational brown algae, nereocystis luetkeana and fucus gardneri, within the salish sea |
publishDate |
2021 |
url |
http://summit.sfu.ca/item/21327 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
etd21257 http://summit.sfu.ca/item/21327 |
_version_ |
1766158168345280512 |