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Biological, chemical, and policy asp...

Egleston, Eric Stefan.

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Biological, chemical, and policy aspects of the relationship between productivity and the ocean carbon cycle.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Biological, chemical, and policy aspects of the relationship between productivity and the ocean carbon cycle./
作者:	Egleston, Eric Stefan.
面頁冊數:	159 p.
附註:	Source: Dissertation Abstracts International, Volume: 68-12, Section: B, page: 8298.
Contained By:	Dissertation Abstracts International68-12B.
標題:	Biology, Oceanography. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3295295
ISBN:	9780549397373

Biological, chemical, and policy aspects of the relationship between productivity and the ocean carbon cycle.
Egleston, Eric Stefan.

Biological, chemical, and policy aspects of the relationship between productivity and the ocean carbon cycle. - 159 p.

Source: Dissertation Abstracts International, Volume: 68-12, Section: B, page: 8298.

Thesis (Ph.D.)--Princeton University, 2008.

The redistribution of CO2 between the oceans and the atmosphere is a function of biological, chemical, and physical processes. This thesis addresses components of the biological and chemical processes that regulate the flux of CO2 across the atmosphere-ocean boundary. In addition, it addresses some public policy components of emerging technologies that aim to intentionally manipulate this flux.

ISBN: 9780549397373Subjects--Topical Terms:

783691
Biology, Oceanography.

Biological, chemical, and policy aspects of the relationship between productivity and the ocean carbon cycle.
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500 $a Source: Dissertation Abstracts International, Volume: 68-12, Section: B, page: 8298.
502 $a Thesis (Ph.D.)--Princeton University, 2008.
520 $a The redistribution of CO2 between the oceans and the atmosphere is a function of biological, chemical, and physical processes. This thesis addresses components of the biological and chemical processes that regulate the flux of CO2 across the atmosphere-ocean boundary. In addition, it addresses some public policy components of emerging technologies that aim to intentionally manipulate this flux.
520 $a Productivity in the ocean is primarily limited by the macronutrients nitrogen and phosphorus, however the assimilation of these nutrients can be limited by the availability of trace metals. The assimilation of urea, an environmentally important source of nitrogen, is facilitated by urease, a Ni-containing metalloenzyme. The diatoms Thalassiosira weissflogii and Thlassiosira pseudonana become limited at low Ni concentrations, when growing on urea. When grown at low Ni, T. weissflogii cells utilizing urea as a source of nitrogen hyperaccumulate Zn through the upregulated Ni transport system and exhibit extreme sensitivity to Zn toxicity. The sensitivity of Ni-limited cells to Zn toxicity may be due to Zn interference with the insertion of Ni at the active site of urea. Such cascading interactions among trace metals resulting from limitation by one is likely a generalizable mechanism of metal toxicity. This may limit the use of urea as a source of nitrogen for primary production.
520 $a The carbonate chemistry of the ocean buffers the chemical response to increasing oceanic dissolved inorganic carbon. We derive explicit expressions of several buffer factors of interest for ocean chemistry, including the Revelle factor. We then use the buffer factors in simplified simulations of the ocean response to increasing atmospheric CO2 to analyze the sensitivity of the CO2 concentration, the pH, and the CaCO3 saturation to various biological and physical oceanic processes. The factors that we derive are useful tools for understanding how potential feedbacks on CO 2 accumulation in the atmosphere and oceans will alter ocean chemistry.
520 $a The intentional manipulation of pelagic production to enhance the biological uptake of CO2 by fertilizing the oceans with iron will have implications on ocean productivity and carbonate chemistry in the ocean. The efficacy and ecological ramifications of fertilization remain highly uncertain. As currently structured, carbon markets encourage the premature implementation of this technology; regulation is needed to structure markets in such a way as to avoid rewarding environmentally destructive or risky behavior.
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