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Development of a Model to Assess Coa...

Ahn, Jeong Eun.

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Development of a Model to Assess Coastal Ecosystem Health Using the Oyster as an Indicator Species.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Development of a Model to Assess Coastal Ecosystem Health Using the Oyster as an Indicator Species./
Author:	Ahn, Jeong Eun.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
Description:	189 p.
Notes:	Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
Contained By:	Dissertations Abstracts International81-04B.
Subject:	Civil engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13885994
ISBN:	9781085775168

Development of a Model to Assess Coastal Ecosystem Health Using the Oyster as an Indicator Species.
Ahn, Jeong Eun.

Development of a Model to Assess Coastal Ecosystem Health Using the Oyster as an Indicator Species. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 189 p.

Source: Dissertations Abstracts International, Volume: 81-04, Section: B.

Thesis (Ph.D.)--New York University Tandon School of Engineering, 2019.

This item is not available from ProQuest Dissertations & Theses.

Engineering projects or natural physical changes can impact the health of coastal ecosystems. In areas lacking sufficient documentation of water quality parameters, these impacts are difficult to quantify. This study develops a model, ECHO (coastal ECosystem Health assessment model using Oysters as the indicator species) which can indicate a measure of coastal ecosystem health based on results of any three-dimensional hydrodynamic model. This model identifies oyster survival, growth, reproduction, self-sustaining, and dead zones based on their capacity to support oysters during different stages of their life cycles. Since the oyster is an ecosystem engineer, the zones delineated by this model can represent the potential areas in which ecosystem health can be sustained or improved if oysters are present or introduced. The zones are delineated based on water depth, speed, salinity, temperature and vertical mixing. Vertical mixing, quantified by Richardson number, is used as a surrogate measure of replenishment of dissolved oxygen and food. This study examines how using Richardson number which considers density and shear effects would better indicate vertical movement of particles in complex tidal environments. This study also demonstrates the use of ECHO as a predictive tool by applying it to two possible physical changes induced by engineering projects (i.e., the increased amount of freshwater and bathymetric changes). Since the locations and sizes of the oyster zones before and after the physical changes can help compare important features of the coastal region, ECHO produces output in a more concise format to assess the overall impacts of the changes.

ISBN: 9781085775168Subjects--Topical Terms:

860360
Civil engineering.
Subjects--Index Terms:

Coastal ecosystem health

Development of a Model to Assess Coastal Ecosystem Health Using the Oyster as an Indicator Species.
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245 1 0 $a Development of a Model to Assess Coastal Ecosystem Health Using the Oyster as an Indicator Species.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 189 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
500 $a Advisor: Ronan, Anne.
502 $a Thesis (Ph.D.)--New York University Tandon School of Engineering, 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.
506 $a This item must not be added to any third party search indexes.
520 $a Engineering projects or natural physical changes can impact the health of coastal ecosystems. In areas lacking sufficient documentation of water quality parameters, these impacts are difficult to quantify. This study develops a model, ECHO (coastal ECosystem Health assessment model using Oysters as the indicator species) which can indicate a measure of coastal ecosystem health based on results of any three-dimensional hydrodynamic model. This model identifies oyster survival, growth, reproduction, self-sustaining, and dead zones based on their capacity to support oysters during different stages of their life cycles. Since the oyster is an ecosystem engineer, the zones delineated by this model can represent the potential areas in which ecosystem health can be sustained or improved if oysters are present or introduced. The zones are delineated based on water depth, speed, salinity, temperature and vertical mixing. Vertical mixing, quantified by Richardson number, is used as a surrogate measure of replenishment of dissolved oxygen and food. This study examines how using Richardson number which considers density and shear effects would better indicate vertical movement of particles in complex tidal environments. This study also demonstrates the use of ECHO as a predictive tool by applying it to two possible physical changes induced by engineering projects (i.e., the increased amount of freshwater and bathymetric changes). Since the locations and sizes of the oyster zones before and after the physical changes can help compare important features of the coastal region, ECHO produces output in a more concise format to assess the overall impacts of the changes.
590 $a School code: 1988.
650 4 $a Civil engineering. $3 860360
650 4 $a Ecology. $3 516476
650 4 $a Animal sciences. $3 3174829
653 $a Coastal ecosystem health
653 $a Hydrodynamic modeling
653 $a Oyster
653 $a Predictive tools
653 $a Stratification
690 $a 0543
690 $a 0475
690 $a 0329
710 2 $a New York University Tandon School of Engineering. $b Civil Engineering. $3 3350166
773 0 $t Dissertations Abstracts International $g 81-04B.
790 $a 1988
791 $a Ph.D.
792 $a 2019
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13885994