Evidence Of Recent Recruitment In The Ocean Quahog Arctica Islandica In The Mid-Atlantic Bight
We report results of a survey explicitly focused on ocean quahog recruitment in the Mid-Atlantic Bight. The recruitment survey resampled all NMFS survey sites south of Hudson Canyon and a selection of sites north and east of Hudson Canyon off the Long Island coast over the entire depth range of this...
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-1456 2024-06-23T07:50:56+00:00 Evidence Of Recent Recruitment In The Ocean Quahog Arctica Islandica In The Mid-Atlantic Bight Powell, EN Mann, Roger L. 2005-01-01T08:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/457 https://scholarworks.wm.edu/context/vimsarticles/article/1456/viewcontent/powell2005.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/457 https://scholarworks.wm.edu/context/vimsarticles/article/1456/viewcontent/powell2005.pdf VIMS Articles Recruitment Ocean Quahog Arctica Fisheries Management Size-Frequency Distribution Fisheries Science Peer-Reviewed Articles Marine Biology text 2005 ftwilliammarycol 2024-06-05T03:31:54Z We report results of a survey explicitly focused on ocean quahog recruitment in the Mid-Atlantic Bight. The recruitment survey resampled all NMFS survey sites south of Hudson Canyon and a selection of sites north and east of Hudson Canyon off the Long Island coast over the entire depth range of this species with the exception of the most inshore reaches off Long Island. More ocean quahogs were encountered, on a per tow basis, in the vicinity of and north of Hudson Canyon. The proportion of recruits in the size-frequency distribution was higher in the south and the most recent recruitment events were concentrated there. Analysis of the 104 size-frequency distributions delineated regions of recent recruitment, areas that have not seen significant recruitment for many decades and areas that received heavy recruitment some decades previously but not recently. Overall, the survey suggests that three regionally distinctive processes determine the size-frequency distributions of ocean quahog assemblages and recruitment therein. The area northeast of Hudson Canyon is unique in the regionally extensive uniformity of size-frequency distributions among sampled assemblages. the near absence of recent recruitment and the presence of large numbers of older recruits, 65-80 mm in size. The inshore (by ocean quahog standards) area off New Jersey is unique in the dominant presence of the largest size classes of ocean quahogs and the remarkable absence of significant recruitment over an extraordinary time span. The area south of 39 degrees N is unique in the widespread presence of relatively young recruits, including some animals with ages within the time span of the present fishery. Recruitment events in ocean quahog populations, although rare in the sense of occurring only once in a score or two of years, are frequent in the context of the +200-year life span of this species, yet also rare in the context of stock survey timing and fishery dynamics. This study strongly supports the assumption that long-lived species recruit ... Text Arctica islandica Ocean quahog W&M ScholarWorks Hudson Long Island |
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Open Polar |
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W&M ScholarWorks |
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ftwilliammarycol |
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Recruitment Ocean Quahog Arctica Fisheries Management Size-Frequency Distribution Fisheries Science Peer-Reviewed Articles Marine Biology |
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Recruitment Ocean Quahog Arctica Fisheries Management Size-Frequency Distribution Fisheries Science Peer-Reviewed Articles Marine Biology Powell, EN Mann, Roger L. Evidence Of Recent Recruitment In The Ocean Quahog Arctica Islandica In The Mid-Atlantic Bight |
topic_facet |
Recruitment Ocean Quahog Arctica Fisheries Management Size-Frequency Distribution Fisheries Science Peer-Reviewed Articles Marine Biology |
description |
We report results of a survey explicitly focused on ocean quahog recruitment in the Mid-Atlantic Bight. The recruitment survey resampled all NMFS survey sites south of Hudson Canyon and a selection of sites north and east of Hudson Canyon off the Long Island coast over the entire depth range of this species with the exception of the most inshore reaches off Long Island. More ocean quahogs were encountered, on a per tow basis, in the vicinity of and north of Hudson Canyon. The proportion of recruits in the size-frequency distribution was higher in the south and the most recent recruitment events were concentrated there. Analysis of the 104 size-frequency distributions delineated regions of recent recruitment, areas that have not seen significant recruitment for many decades and areas that received heavy recruitment some decades previously but not recently. Overall, the survey suggests that three regionally distinctive processes determine the size-frequency distributions of ocean quahog assemblages and recruitment therein. The area northeast of Hudson Canyon is unique in the regionally extensive uniformity of size-frequency distributions among sampled assemblages. the near absence of recent recruitment and the presence of large numbers of older recruits, 65-80 mm in size. The inshore (by ocean quahog standards) area off New Jersey is unique in the dominant presence of the largest size classes of ocean quahogs and the remarkable absence of significant recruitment over an extraordinary time span. The area south of 39 degrees N is unique in the widespread presence of relatively young recruits, including some animals with ages within the time span of the present fishery. Recruitment events in ocean quahog populations, although rare in the sense of occurring only once in a score or two of years, are frequent in the context of the +200-year life span of this species, yet also rare in the context of stock survey timing and fishery dynamics. This study strongly supports the assumption that long-lived species recruit ... |
format |
Text |
author |
Powell, EN Mann, Roger L. |
author_facet |
Powell, EN Mann, Roger L. |
author_sort |
Powell, EN |
title |
Evidence Of Recent Recruitment In The Ocean Quahog Arctica Islandica In The Mid-Atlantic Bight |
title_short |
Evidence Of Recent Recruitment In The Ocean Quahog Arctica Islandica In The Mid-Atlantic Bight |
title_full |
Evidence Of Recent Recruitment In The Ocean Quahog Arctica Islandica In The Mid-Atlantic Bight |
title_fullStr |
Evidence Of Recent Recruitment In The Ocean Quahog Arctica Islandica In The Mid-Atlantic Bight |
title_full_unstemmed |
Evidence Of Recent Recruitment In The Ocean Quahog Arctica Islandica In The Mid-Atlantic Bight |
title_sort |
evidence of recent recruitment in the ocean quahog arctica islandica in the mid-atlantic bight |
publisher |
W&M ScholarWorks |
publishDate |
2005 |
url |
https://scholarworks.wm.edu/vimsarticles/457 https://scholarworks.wm.edu/context/vimsarticles/article/1456/viewcontent/powell2005.pdf |
geographic |
Hudson Long Island |
geographic_facet |
Hudson Long Island |
genre |
Arctica islandica Ocean quahog |
genre_facet |
Arctica islandica Ocean quahog |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/457 https://scholarworks.wm.edu/context/vimsarticles/article/1456/viewcontent/powell2005.pdf |
_version_ |
1802641891457499136 |