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Microplastic Deposition on Eastern O...

Layeni, Amira.

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Microplastic Deposition on Eastern Oyster (Crassostrea virginica) Reefs in an Urbanized, Temperate Estuary.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Microplastic Deposition on Eastern Oyster (Crassostrea virginica) Reefs in an Urbanized, Temperate Estuary./
Author:	Layeni, Amira.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2024,
Description:	58 p.
Notes:	Source: Masters Abstracts International, Volume: 86-01.
Contained By:	Masters Abstracts International86-01.
Subject:	Environmental science. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31334550
ISBN:	9798383200728

Microplastic Deposition on Eastern Oyster (Crassostrea virginica) Reefs in an Urbanized, Temperate Estuary.
Layeni, Amira.

Microplastic Deposition on Eastern Oyster (Crassostrea virginica) Reefs in an Urbanized, Temperate Estuary. - Ann Arbor : ProQuest Dissertations & Theses, 2024 - 58 p.

Source: Masters Abstracts International, Volume: 86-01.

Thesis (M.S.)--Hampton University, 2024.

Plastic pollution is a growing environmental concern because of the durability and widespread use of plastics in consumer products. As plastics degrade into microplastics (<5mm), they accumulate in significant quantities in soil, air, and water. Although biochemically inert, microplastics infiltrate food webs and invade various consumers. Microplastics' varied sizes, shapes, and polymer compositions make them accessible to a wide range of organisms. In estuarine and coastal regions, which are crucial areas for seafood production, microplastic deposition is notably high because of local, riverine, and oceanic plastic subsidies. Microplastics extracted from sediments serve as indicators of deposition. While particles from the water provide a momentary snapshot of microplastic availability, microplastics within oyster tissues represent a distinct pathway for suspension within food webs. Despite the importance of understanding the prevalence of microplastics, gaps in knowledge regarding their distribution and impact persist. This study examines microplastic particles' distribution, abundance, and characteristics in an urbanized estuary. Microplastics were quantified in different components of oyster reef habitats within a tributary of the Southern Chesapeake Bay. Eastern oysters (Crassostrea virginica) (n = 142), reef sediment (n = 15), and water samples (n = 5) were taken from intertidal oyster reefs in Hampton, Virginia, and digested to extract microplastics. Microplastic particles were enumerated and classified according to type and color. Microplastic particles were found in 94% of oyster samples and 100% of sediment and water samples. There were significant differences in microplastic concentrations among matrices, with sediment and water samples having similar microplastic community structures and oysters containing fewer particles. Differences in microplastic type and color were also noted across reef components and sampling locations, highlighting the nuanced dynamics of microplastic distribution and retention within oyster reef habitats. By shedding light on the prevalence of microplastics in oyster reef habitats of the Chesapeake Bay and their potential impact on marine food webs, this research contributes valuable insights to the broader discourse on plastic pollution and emphasizes the urgency of implementing effective environmental policies and regulations.

ISBN: 9798383200728Subjects--Topical Terms:

677245
Environmental science.
Subjects--Index Terms:

Chesapeake Bay

Microplastic Deposition on Eastern Oyster (Crassostrea virginica) Reefs in an Urbanized, Temperate Estuary.
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100 1 $a Layeni, Amira. $3 3772331
245 1 0 $a Microplastic Deposition on Eastern Oyster (Crassostrea virginica) Reefs in an Urbanized, Temperate Estuary.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2024
300 $a 58 p.
500 $a Source: Masters Abstracts International, Volume: 86-01.
500 $a Advisor: Dash, Shawn T.;Reustle, Joseph W. N. L.
502 $a Thesis (M.S.)--Hampton University, 2024.
520 $a Plastic pollution is a growing environmental concern because of the durability and widespread use of plastics in consumer products. As plastics degrade into microplastics (<5mm), they accumulate in significant quantities in soil, air, and water. Although biochemically inert, microplastics infiltrate food webs and invade various consumers. Microplastics' varied sizes, shapes, and polymer compositions make them accessible to a wide range of organisms. In estuarine and coastal regions, which are crucial areas for seafood production, microplastic deposition is notably high because of local, riverine, and oceanic plastic subsidies. Microplastics extracted from sediments serve as indicators of deposition. While particles from the water provide a momentary snapshot of microplastic availability, microplastics within oyster tissues represent a distinct pathway for suspension within food webs. Despite the importance of understanding the prevalence of microplastics, gaps in knowledge regarding their distribution and impact persist. This study examines microplastic particles' distribution, abundance, and characteristics in an urbanized estuary. Microplastics were quantified in different components of oyster reef habitats within a tributary of the Southern Chesapeake Bay. Eastern oysters (Crassostrea virginica) (n = 142), reef sediment (n = 15), and water samples (n = 5) were taken from intertidal oyster reefs in Hampton, Virginia, and digested to extract microplastics. Microplastic particles were enumerated and classified according to type and color. Microplastic particles were found in 94% of oyster samples and 100% of sediment and water samples. There were significant differences in microplastic concentrations among matrices, with sediment and water samples having similar microplastic community structures and oysters containing fewer particles. Differences in microplastic type and color were also noted across reef components and sampling locations, highlighting the nuanced dynamics of microplastic distribution and retention within oyster reef habitats. By shedding light on the prevalence of microplastics in oyster reef habitats of the Chesapeake Bay and their potential impact on marine food webs, this research contributes valuable insights to the broader discourse on plastic pollution and emphasizes the urgency of implementing effective environmental policies and regulations.
590 $a School code: 0802.
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650 4 $a Plastics. $3 649803
650 4 $a Biological oceanography. $3 2122748
653 $a Chesapeake Bay
653 $a Marine pollution
653 $a Microplastics
653 $a Oyster reefs
653 $a Urbanized estuary
690 $a 0768
690 $a 0795
690 $a 0416
710 2 $a Hampton University. $b Biology. $3 3346560
773 0 $t Masters Abstracts International $g 86-01.
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791 $a M.S.
792 $a 2024
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31334550