東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Quantifying the Rates and Drivers of...

Courtney, Travis A.

Linked to FindBook

Google Book

Amazon

博客來

Quantifying the Rates and Drivers of Coral and Coral Reef Calcification in the Anthropocene.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Quantifying the Rates and Drivers of Coral and Coral Reef Calcification in the Anthropocene./
Author:	Courtney, Travis A.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
Description:	122 p.
Notes:	Source: Dissertations Abstracts International, Volume: 81-09, Section: B.
Contained By:	Dissertations Abstracts International81-09B.
Subject:	Chemical oceanography. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27540187
ISBN:	9781392685686

Quantifying the Rates and Drivers of Coral and Coral Reef Calcification in the Anthropocene.
Courtney, Travis A.

Quantifying the Rates and Drivers of Coral and Coral Reef Calcification in the Anthropocene. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 122 p.

Source: Dissertations Abstracts International, Volume: 81-09, Section: B.

Thesis (Ph.D.)--University of California, San Diego, 2019.

This item is not available from ProQuest Dissertations & Theses.

Anthropogenic environmental change threatens the ability for many coral reefs to maintain the calcium carbonate structures that provide shoreline protection, fisheries provision, and tourism revenue to human populations worldwide. Rigorous quantification of the rates and drivers of coral and coral reef net ecosystem calcification (NEC) represents a significant challenge but is tantamount for understanding how these services to humanity may be affected by environmental change. This challenge is addressed here by leveraging a combination of field observations, numerical models, and statistical analyses. The major findings showed that extremely large NEC errors of -91% to +1000% can be driven by interacting ±83% uncertainties in the difficult to measure seawater depth and residence time parameters used to calculate NEC. Confidence in NEC rates can nonetheless be improved by leveraging multiple NEC methods as evidenced by the agreement between chemistry and census-based NEC calculated for Hog Reef, Bermuda. Analysis of the environmental drivers of coral and reef-scale calcification at Hog Reef and Crescent Reef, Bermuda showed that temperature was the strongest driver of coral and reef-scale calcification rates with little influence by the other environmental parameters studied. This suggests that reduced warming rates driven by lower global carbon dioxide emissions pathways could maintain Bermudan coral calcification through the twenty-first century. However, more rapid warming can cause coral bleaching that reduces NEC as evidenced by the observation of zero NEC during the fall 2015 coral bleaching event in Kane'ohe Bay, Hawai'i. The subsequent recovery to pre-bleaching NEC rates by the following summer highlights the capacity of coral reef NEC to rapidly recover in the absence of continued stressors. Conversely, the cumulative effects of 20 years of disturbances on coral calcification capacity (CCC) across the main Hawaiian Islands, Mo'orea, Florida Keys reef tract, and St. John revealed disturbance-driven reductions in CCC and community-level shifts in contributions to CCC from competitive to weedy corals that may increase CCC resilience to future disturbances. This dissertation collectively improves projections for how the Anthropocene may change reef structures and the services they provide humanity by advancing our understanding of the rates and drivers of coral and coral reef calcification.

ISBN: 9781392685686Subjects--Topical Terms:

516760
Chemical oceanography.
Subjects--Index Terms:

Calcification

Quantifying the Rates and Drivers of Coral and Coral Reef Calcification in the Anthropocene.
LDR:03772nmm a2200409 4500 001 2280195
005 20210830065509.5
008 220723s2019 ||||||||||||||||| ||eng d
020 $a 9781392685686
035 $a (MiAaPQ)AAI27540187
035 $a AAI27540187
040 $a MiAaPQ $c MiAaPQ
100 1 $a Courtney, Travis A. $3 3558701
245 1 0 $a Quantifying the Rates and Drivers of Coral and Coral Reef Calcification in the Anthropocene.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 122 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-09, Section: B.
500 $a Advisor: Andersson, Andreas.
502 $a Thesis (Ph.D.)--University of California, San Diego, 2019.
506 $a This item is not available from ProQuest Dissertations & Theses.
506 $a This item must not be sold to any third party vendors.
520 $a Anthropogenic environmental change threatens the ability for many coral reefs to maintain the calcium carbonate structures that provide shoreline protection, fisheries provision, and tourism revenue to human populations worldwide. Rigorous quantification of the rates and drivers of coral and coral reef net ecosystem calcification (NEC) represents a significant challenge but is tantamount for understanding how these services to humanity may be affected by environmental change. This challenge is addressed here by leveraging a combination of field observations, numerical models, and statistical analyses. The major findings showed that extremely large NEC errors of -91% to +1000% can be driven by interacting ±83% uncertainties in the difficult to measure seawater depth and residence time parameters used to calculate NEC. Confidence in NEC rates can nonetheless be improved by leveraging multiple NEC methods as evidenced by the agreement between chemistry and census-based NEC calculated for Hog Reef, Bermuda. Analysis of the environmental drivers of coral and reef-scale calcification at Hog Reef and Crescent Reef, Bermuda showed that temperature was the strongest driver of coral and reef-scale calcification rates with little influence by the other environmental parameters studied. This suggests that reduced warming rates driven by lower global carbon dioxide emissions pathways could maintain Bermudan coral calcification through the twenty-first century. However, more rapid warming can cause coral bleaching that reduces NEC as evidenced by the observation of zero NEC during the fall 2015 coral bleaching event in Kane'ohe Bay, Hawai'i. The subsequent recovery to pre-bleaching NEC rates by the following summer highlights the capacity of coral reef NEC to rapidly recover in the absence of continued stressors. Conversely, the cumulative effects of 20 years of disturbances on coral calcification capacity (CCC) across the main Hawaiian Islands, Mo'orea, Florida Keys reef tract, and St. John revealed disturbance-driven reductions in CCC and community-level shifts in contributions to CCC from competitive to weedy corals that may increase CCC resilience to future disturbances. This dissertation collectively improves projections for how the Anthropocene may change reef structures and the services they provide humanity by advancing our understanding of the rates and drivers of coral and coral reef calcification.
590 $a School code: 0033.
650 4 $a Chemical oceanography. $3 516760
650 4 $a Ecology. $3 516476
650 4 $a Physical oceanography. $3 3168433
650 4 $a Climate change. $2 bicssc $3 2079509
653 $a Calcification
653 $a Climate change
653 $a Coral bleaching
653 $a Coral reefs
653 $a Net ecosystem calcification
653 $a Ocean acidification
690 $a 0403
690 $a 0329
690 $a 0404
690 $a 0415
710 2 $a University of California, San Diego. $b Scripps Institution of Oceanography. $3 3543449
773 0 $t Dissertations Abstracts International $g 81-09B.
790 $a 0033
791 $a Ph.D.
792 $a 2019
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27540187