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Effects of Climate Change and Eutrophication on Photosynthesis and Carbon-Concentrating Mechanisms : = Surprising Diversity Among Reef Algae.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Effects of Climate Change and Eutrophication on Photosynthesis and Carbon-Concentrating Mechanisms :/
其他題名:	Surprising Diversity Among Reef Algae.
作者:	Kawachi, Migiwa S.
面頁冊數:	1 online resource (182 pages)
附註:	Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
Contained By:	Dissertations Abstracts International85-01B.
標題:	Plant sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30493224click for full text (PQDT)
ISBN:	9798379894726

Effects of Climate Change and Eutrophication on Photosynthesis and Carbon-Concentrating Mechanisms : = Surprising Diversity Among Reef Algae.
Kawachi, Migiwa S.

Effects of Climate Change and Eutrophication on Photosynthesis and Carbon-Concentrating Mechanisms :Surprising Diversity Among Reef Algae. - 1 online resource (182 pages)

Source: Dissertations Abstracts International, Volume: 85-01, Section: B.

Thesis (Ph.D.)--University of Hawai'i at Manoa, 2023.

Includes bibliographical references

Increased anthropogenic CO2 emission since the start of the Industrial Revolution has brought a changing climate and various threats to coastal ecosystems including ocean warming, ocean acidification (OA), and sea level rise. Coral reef ecosystems are especially vulnerable to the climate change, because ocean warming and acidification decrease calcification and increase bleaching in coral. In addition to these impacts of climate change, coastal ecosystems are already experiencing local anthropogenic impacts such as chronic eutrophication and continuing arrival of new invasive species. In Hawai'i, large-scale blooms of both native and invasive macroalgae are often observed in the region with coastal eutrophication by land-based anthropogenic nutrient input. Predicting the effects of OA (increased CO2 concentration in the ocean) on algae is not straightforward because many algae are already equipped with carbon-concentrating mechanisms (CCMs) with which algae can increase their internal CO2 concentration for photosynthesis. Further, nutrient availability especially that of the macronutrient, nitrogen (N) could alter the operation of algal CCMs because CCMs involve specific, large proteins such as ribulose-1,5-biphosphate carboxylase-oxygenase (RUBISCO) and carbonic anhydrases (CA). This study experimentally investigated how OA and eutrophication, independently and synergistically, affect photosynthesis and CCMs in common Hawaiian reef algae. Algae can quickly change their maximum photosynthetic rates and CCMs when grown under elevated CO2 and N. Further, we found a surprising diversity among reef algae in how they react to elevated CO2 and N with their CCMs. The results of this study suggest that many Hawaiian algae will thrive under future climate change conditions, and OA and eutrophication will likely work in their favor, accelerating the phase shift from coral-dominated to macroalgal-dominated reefs in unpredictably faster paces and with players that are not easily predicted.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798379894726Subjects--Topical Terms:

3173832
Plant sciences.
Subjects--Index Terms:

AlgaeIndex Terms--Genre/Form:

542853
Electronic books.

Effects of Climate Change and Eutrophication on Photosynthesis and Carbon-Concentrating Mechanisms : = Surprising Diversity Among Reef Algae.
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