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Fine-Scale Movements and Habitat Use of Economically Important Reef Fishes at North Carolina Artificial Reefs.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Fine-Scale Movements and Habitat Use of Economically Important Reef Fishes at North Carolina Artificial Reefs./
作者:	Tharp, Ryan Maxwell.
面頁冊數:	1 online resource (656 pages)
附註:	Source: Masters Abstracts International, Volume: 85-05.
Contained By:	Masters Abstracts International85-05.
標題:	Ocean engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9798380720700

Fine-Scale Movements and Habitat Use of Economically Important Reef Fishes at North Carolina Artificial Reefs.
Tharp, Ryan Maxwell.

Fine-Scale Movements and Habitat Use of Economically Important Reef Fishes at North Carolina Artificial Reefs. - 1 online resource (656 pages)

Source: Masters Abstracts International, Volume: 85-05.

Thesis (M.S.)--North Carolina State University, 2023.

Includes bibliographical references

Artificial reefs play an important role in marine fisheries management by supplementing or enhancing natural habitats. Despite their increased use in recent years, the choice of structures used at artificial reef sites remains largely haphazard due to the lack of information on their performance. There have been many studies examining the performance of artificial reefs as a whole, but there have been few that have examined the usage of different artificial reef structures at the individual fish level. The goal of our study was to determine fine-scale movement patterns and artificial structure use of economically important reef fish species using acoustic telemetry. The questions we addressed were (1) is there selection for one artificial reef structure over another and, if so, does selection differ by species, (2) do home ranges vary by species, fish size, and artificial reef structure and (3) do fishes use other artificial and natural reefs surrounding a single artificial reef complex and does this "offsite movement" differ by species?During the late spring and summers of 2021 and 2022, we tagged 72 black sea bass (Centropristis striata), 35 greater amberjack (Seriola dumerili), 34 gag (Mycteroperca mircrolepis), nine almaco jack (S. rivoliana), and eight red snapper (Lutjanus campechanus) on four different artificial reef complexes near Cape Lookout, North Carolina: AR285, AR300, AR330, and AR345. The four artificial reef complexes contained a variety of artificial structures such as concrete pipe, reef balls, H-units, manhole sections, consolidated concrete, fiberglass domes, aircraft, train boxcars, and vessels. We tracked the fine-scale movements of our tagged fishes for roughly 120 days using VEMCO Positioning Systems (VPS), one at each artificial reef complex. We estimated selection of artificial reef structures using Habitat Selection Functions and transition matrices, and examined species-specific differences in the area used by estimating home ranges.We determined that black sea bass had high site fidelity to the artificial reef structure that they were caught and released over during the period of our study. They rarely left the structure where they were tagged and their home ranges were relatively small and directly overlapped this structure, suggesting that black sea bass did not display any structure selection. Relative to black sea bass, gag and red snapper moved larger distances away from artificial reef structures and routinely moved between structures. Their home ranges often included multiple artificial structures, and they displayed the highest selection for the vessels. Almaco jack and greater amberjack moved the largest distances from the structure and used every available artificial structure but displayed the highest selection for the vessels. Their home ranges often included the entire reef area and they were frequently detected offsite at nearby artificial reef complexes, shipwrecks, and natural sites. We found no evidence for selection of any one artificial structure by black sea bass (i.e., they had high site fidelity to whatever structure they were caught from) while gag, red snapper, almaco jack, and greater amberjack selected for high profile structures like vessels. These results will be useful to managers charged with decisions on what types of materials to place at artificial reef complexes to supplement or enhance habitat for economically important fishes.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798380720700Subjects--Topical Terms:

857658
Ocean engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Fine-Scale Movements and Habitat Use of Economically Important Reef Fishes at North Carolina Artificial Reefs.
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520 $a Artificial reefs play an important role in marine fisheries management by supplementing or enhancing natural habitats. Despite their increased use in recent years, the choice of structures used at artificial reef sites remains largely haphazard due to the lack of information on their performance. There have been many studies examining the performance of artificial reefs as a whole, but there have been few that have examined the usage of different artificial reef structures at the individual fish level. The goal of our study was to determine fine-scale movement patterns and artificial structure use of economically important reef fish species using acoustic telemetry. The questions we addressed were (1) is there selection for one artificial reef structure over another and, if so, does selection differ by species, (2) do home ranges vary by species, fish size, and artificial reef structure and (3) do fishes use other artificial and natural reefs surrounding a single artificial reef complex and does this "offsite movement" differ by species?During the late spring and summers of 2021 and 2022, we tagged 72 black sea bass (Centropristis striata), 35 greater amberjack (Seriola dumerili), 34 gag (Mycteroperca mircrolepis), nine almaco jack (S. rivoliana), and eight red snapper (Lutjanus campechanus) on four different artificial reef complexes near Cape Lookout, North Carolina: AR285, AR300, AR330, and AR345. The four artificial reef complexes contained a variety of artificial structures such as concrete pipe, reef balls, H-units, manhole sections, consolidated concrete, fiberglass domes, aircraft, train boxcars, and vessels. We tracked the fine-scale movements of our tagged fishes for roughly 120 days using VEMCO Positioning Systems (VPS), one at each artificial reef complex. We estimated selection of artificial reef structures using Habitat Selection Functions and transition matrices, and examined species-specific differences in the area used by estimating home ranges.We determined that black sea bass had high site fidelity to the artificial reef structure that they were caught and released over during the period of our study. They rarely left the structure where they were tagged and their home ranges were relatively small and directly overlapped this structure, suggesting that black sea bass did not display any structure selection. Relative to black sea bass, gag and red snapper moved larger distances away from artificial reef structures and routinely moved between structures. Their home ranges often included multiple artificial structures, and they displayed the highest selection for the vessels. Almaco jack and greater amberjack moved the largest distances from the structure and used every available artificial structure but displayed the highest selection for the vessels. Their home ranges often included the entire reef area and they were frequently detected offsite at nearby artificial reef complexes, shipwrecks, and natural sites. We found no evidence for selection of any one artificial structure by black sea bass (i.e., they had high site fidelity to whatever structure they were caught from) while gag, red snapper, almaco jack, and greater amberjack selected for high profile structures like vessels. These results will be useful to managers charged with decisions on what types of materials to place at artificial reef complexes to supplement or enhance habitat for economically important fishes.
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