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Characterizing the Interannual Spatiotemporal Population Dynamics of the Atlantic Bay Nettle (Chrysaora chesapeakei) in the Patuxent River, MD.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Characterizing the Interannual Spatiotemporal Population Dynamics of the Atlantic Bay Nettle (Chrysaora chesapeakei) in the Patuxent River, MD./
Author:	Mclean, Nikelene Alexandria.
Description:	1 online resource (129 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-11, Section: A.
Contained By:	Dissertations Abstracts International84-11A.
Subject:	Environmental science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30311816click for full text (PQDT)
ISBN:	9798379507190

Characterizing the Interannual Spatiotemporal Population Dynamics of the Atlantic Bay Nettle (Chrysaora chesapeakei) in the Patuxent River, MD.
Mclean, Nikelene Alexandria.

Characterizing the Interannual Spatiotemporal Population Dynamics of the Atlantic Bay Nettle (Chrysaora chesapeakei) in the Patuxent River, MD. - 1 online resource (129 pages)

Source: Dissertations Abstracts International, Volume: 84-11, Section: A.

Thesis (Ph.D.)--Morgan State University, 2023.

Includes bibliographical references

The Atlantic bay nettle (Chrysaora chesapeakei) is a cnidarian jellyfish species that plays a significant role in supporting the health and productivity of the Chesapeake Bay ecosystem. Through their carnivorous predation during summer blooms, the Atlantic bay nettle promotes secondary production levels, positively influences biogeochemical processes within benthic microbial communities and supports the survival of the eastern oyster (Crassostrea virginica) in the Chesapeake Bay. Although bay nettles play a significant ecological role in the Chesapeake Bay ecosystem, their blooms can be very disruptive in nature. With the magnitude and periodicity of these blooms poised to increase owing to a number of factors, we sought to conduct a study to bridge gaps in our understanding of bay nettle population dynamics across the full spatial scale of their life history, placing keen emphasis on the environments in which they originate, known as source habitat. We used a combination of long term abundance data gathered from traditional net tows as well as fine spatial resolution data captured from an Adaptive Resolution Imaging Sonar (ARIS) to analyze the environmental drivers of interannual bloom formation in source habitats, examine the impact of interannual bloom formation on trophic dynamics in source habitats, investigate patterns of bay nettle distribution within the Patuxent River waterscape and examine the impact of freshwater discharge on these patterns. The results of the study suggest that salinity and freshwater discharge have a significant impact on intra-annual bay nettle bloom formation in source habitats of the Patuxent River. We also found that intra-annual bay nettle bloom formation has a significant impact on lower trophic species when grouped, but most notably on the intra-annual population abundance of ctenophores(Mnemiopsis leidyi) in bay nettle source habitats. The results of the study also suggested that during summer blooms, bay nettles demonstrate higher levels of aggregation in their source habitat compared to sink habitats and spring freshwater discharge levels may have a notable impact on the summer abundance of bay nettles distributed within source habitats of the Patuxent River.

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

Mode of access: World Wide Web

ISBN: 9798379507190Subjects--Topical Terms:

677245
Environmental science.
Subjects--Index Terms:

Population dynamicsIndex Terms--Genre/Form:

542853
Electronic books.

Characterizing the Interannual Spatiotemporal Population Dynamics of the Atlantic Bay Nettle (Chrysaora chesapeakei) in the Patuxent River, MD.
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520 $a The Atlantic bay nettle (Chrysaora chesapeakei) is a cnidarian jellyfish species that plays a significant role in supporting the health and productivity of the Chesapeake Bay ecosystem. Through their carnivorous predation during summer blooms, the Atlantic bay nettle promotes secondary production levels, positively influences biogeochemical processes within benthic microbial communities and supports the survival of the eastern oyster (Crassostrea virginica) in the Chesapeake Bay. Although bay nettles play a significant ecological role in the Chesapeake Bay ecosystem, their blooms can be very disruptive in nature. With the magnitude and periodicity of these blooms poised to increase owing to a number of factors, we sought to conduct a study to bridge gaps in our understanding of bay nettle population dynamics across the full spatial scale of their life history, placing keen emphasis on the environments in which they originate, known as source habitat. We used a combination of long term abundance data gathered from traditional net tows as well as fine spatial resolution data captured from an Adaptive Resolution Imaging Sonar (ARIS) to analyze the environmental drivers of interannual bloom formation in source habitats, examine the impact of interannual bloom formation on trophic dynamics in source habitats, investigate patterns of bay nettle distribution within the Patuxent River waterscape and examine the impact of freshwater discharge on these patterns. The results of the study suggest that salinity and freshwater discharge have a significant impact on intra-annual bay nettle bloom formation in source habitats of the Patuxent River. We also found that intra-annual bay nettle bloom formation has a significant impact on lower trophic species when grouped, but most notably on the intra-annual population abundance of ctenophores(Mnemiopsis leidyi) in bay nettle source habitats. The results of the study also suggested that during summer blooms, bay nettles demonstrate higher levels of aggregation in their source habitat compared to sink habitats and spring freshwater discharge levels may have a notable impact on the summer abundance of bay nettles distributed within source habitats of the Patuxent River.
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