Spillover of sea scallops from rotational closures in the Mid-Atlantic Bight (United States)

Hart, Deborah R; Munroe, Daphne M; Caracappa, Joseph C; Haidvogel, Dale; Shank, Burton V; Rudders, David B; Klinck, John M; Hofmann, Eileen E; Powell, Eric N

doi:10.1093/icesjms/fsaa099

i

Spillover of sea scallops from rotational closures in the Mid-Atlantic Bight (United States)

2020
By Hart, Deborah R ; Munroe, Daphne M ; Caracappa, Joseph C ; ...

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Journal Title:

ICES Journal of Marine Science
Personal Author:

Hart, Deborah R ; Munroe, Daphne M ; Caracappa, Joseph C ; Haidvogel, Dale ; Shank, Burton V ; Rudders, David B ; Klinck, John M ; Hofmann, Eileen E ; Powell, Eric N
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NEFSC (Northeast Fisheries Science Center)
Description:

We examined evidence for larval spillover (increased recruitment outside the closures) of Atlantic sea scallops (Placopecten magellanicus) due to rotational closures in the Mid-Atlantic Bight using a 40-year fisheries survey time series and a larval transport model. Since the first closure of the Hudson Canyon South (HCS) area in 1998, mean recruitment in the two areas directly down-current from this closure, Elephant Trunk (ET) and Delmarva (DMV), increased significantly by factors of about 7 and 2, respectively. Stock–recruit plots indicate that low biomasses in HCS were associated with reduced mean recruitment in ET and DMV. Simulations indicate that larvae spawned in HCS often settle in the two downstream areas and that model-estimated settlement (based on gonad biomass in HCS and year-specific larval transport between the areas) is correlated with observed recruitment. This study gives strong evidence that the rotational closure of HCS has induced increased recruitment in down-current areas.
Keywords:

Aquatic Science Ecology Ecology, Evolution, Behavior And Systematics Oceanography Ecology, Evolution, Behavior And Systematics Ecology, Evolution, Behavior And Systematics
Source:

ICES Journal of Marine Science, 77(5), 1992-2002
DOI:

https://doi.org/10.1093/icesjms/fsaa099
ISSN:

1095-9289
Format:

PDF
Publisher:

Oxford University Press (OUP)
Document Type:

Journal Article
Funding:

Grant no. NA09OAR4320129
License:

https://creativecommons.org/publicdomain/zero/1.0/
Rights Information:

CC0 Public Domain
Rights Statement:

This work is written by (a) US Government employee(s) and is in the public domain in the US.
Compliance:

Library
Main Document Checksum:

urn:sha256:80ff508344714ec8d236d52bf7d1532e7f66a01aa34757c5f7b6842f6c6ff624
Download URL:

https://repository.library.noaa.gov/view/noaa/53367/noaa_53367_DS1.pdf
File Type:

[PDF - 794.01 KB ]

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