Restoration that targets function as opposed to structure: replacing lost bivalve production and filtration
ABSTRACT: Abundant suspension-feeding bivalves have a dominant organizing role in shallow aquatic systems by filtering overlying waters, affecting biogeochemical processing, and diverting production from the water column to the benthos. In degraded aquatic systems where bivalve populations have been...
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ftcarolinadr:cdr.lib.unc.edu:f4752s08f 2023-09-05T13:21:47+02:00 Restoration that targets function as opposed to structure: replacing lost bivalve production and filtration French McCay, Deborah P. Peterson, Charles H. DeAlteris, Joseph T. Catena, John University of North Carolina at Chapel Hill 2003 https://doi.org/10.17615/ns30-3327 https://cdr.lib.unc.edu/downloads/dv140313g?file=thumbnail https://cdr.lib.unc.edu/downloads/dv140313g English eng https://doi.org/10.17615/ns30-3327 https://cdr.lib.unc.edu/downloads/dv140313g?file=thumbnail https://cdr.lib.unc.edu/downloads/dv140313g http://rightsstatements.org/vocab/InC/1.0/ Marine Ecology - Progress Series, 264 Limiting factors Natural resource damage assessment Restoration North Cape¹ oil spill Population modeling Loss Bivalves Article 2003 ftcarolinadr https://doi.org/10.17615/ns30-3327 2023-08-19T22:25:39Z ABSTRACT: Abundant suspension-feeding bivalves have a dominant organizing role in shallow aquatic systems by filtering overlying waters, affecting biogeochemical processing, and diverting production from the water column to the benthos. In degraded aquatic systems where bivalve populations have been reduced, successful restoration of ecosystem functions may be achieved by targeting the revival of bivalve populations. The ‘North Cape’ oil spill on the coast of Rhode Island (USA) provides an opportunity to demonstrate the feasibility of scaling bivalve restoration to meet quantitative goals of enhanced production. After this oil spill, mortalities of bivalves were estimated by impact assessment modeling of acute toxicity, and results were confirmed by comparisons with counts of dead and moribund animals on local beaches. Computation of lost bivalve production included future production expected from affected animals, had they lived out their expected life spans. This calculation of production forgone required a demographic model that combined age-specific mortality with individual growth. Application of this modeling approach to surf clams Spisula solidissima, the species that comprised 97% of the total loss of bivalve production from the spill, illustrates the detailed implementation of scaling restoration to match estimates of losses. We consider the factors known to limit abundance and production of surf clams and other marine bivalves (hard clams, American oysters and bay scallops) and review the advantages of hatchery stocking, transplantation, habitat restoration, and reduction of fishing pressure in selecting a reliable and efficient restoration action. Age-specific estimates of the scale of population enhancement required to restore production showed that fewer additional animals were needed when larger (older) animals were added, but at the expense of greater grow-out requirements. Relaxation of fishing was most effective for hard clams. Accurate scaling of restoration was most sensitive to mortality ... Article in Journal/Newspaper North Cape Carolina Digital Repository (UNC - University of North Carolina) North Cape ENVELOPE(165.700,165.700,-70.650,-70.650) |
institution |
Open Polar |
collection |
Carolina Digital Repository (UNC - University of North Carolina) |
op_collection_id |
ftcarolinadr |
language |
English |
topic |
Limiting factors Natural resource damage assessment Restoration North Cape¹ oil spill Population modeling Loss Bivalves |
spellingShingle |
Limiting factors Natural resource damage assessment Restoration North Cape¹ oil spill Population modeling Loss Bivalves French McCay, Deborah P. Peterson, Charles H. DeAlteris, Joseph T. Catena, John Restoration that targets function as opposed to structure: replacing lost bivalve production and filtration |
topic_facet |
Limiting factors Natural resource damage assessment Restoration North Cape¹ oil spill Population modeling Loss Bivalves |
description |
ABSTRACT: Abundant suspension-feeding bivalves have a dominant organizing role in shallow aquatic systems by filtering overlying waters, affecting biogeochemical processing, and diverting production from the water column to the benthos. In degraded aquatic systems where bivalve populations have been reduced, successful restoration of ecosystem functions may be achieved by targeting the revival of bivalve populations. The ‘North Cape’ oil spill on the coast of Rhode Island (USA) provides an opportunity to demonstrate the feasibility of scaling bivalve restoration to meet quantitative goals of enhanced production. After this oil spill, mortalities of bivalves were estimated by impact assessment modeling of acute toxicity, and results were confirmed by comparisons with counts of dead and moribund animals on local beaches. Computation of lost bivalve production included future production expected from affected animals, had they lived out their expected life spans. This calculation of production forgone required a demographic model that combined age-specific mortality with individual growth. Application of this modeling approach to surf clams Spisula solidissima, the species that comprised 97% of the total loss of bivalve production from the spill, illustrates the detailed implementation of scaling restoration to match estimates of losses. We consider the factors known to limit abundance and production of surf clams and other marine bivalves (hard clams, American oysters and bay scallops) and review the advantages of hatchery stocking, transplantation, habitat restoration, and reduction of fishing pressure in selecting a reliable and efficient restoration action. Age-specific estimates of the scale of population enhancement required to restore production showed that fewer additional animals were needed when larger (older) animals were added, but at the expense of greater grow-out requirements. Relaxation of fishing was most effective for hard clams. Accurate scaling of restoration was most sensitive to mortality ... |
author2 |
University of North Carolina at Chapel Hill |
format |
Article in Journal/Newspaper |
author |
French McCay, Deborah P. Peterson, Charles H. DeAlteris, Joseph T. Catena, John |
author_facet |
French McCay, Deborah P. Peterson, Charles H. DeAlteris, Joseph T. Catena, John |
author_sort |
French McCay, Deborah P. |
title |
Restoration that targets function as opposed to structure: replacing lost bivalve production and filtration |
title_short |
Restoration that targets function as opposed to structure: replacing lost bivalve production and filtration |
title_full |
Restoration that targets function as opposed to structure: replacing lost bivalve production and filtration |
title_fullStr |
Restoration that targets function as opposed to structure: replacing lost bivalve production and filtration |
title_full_unstemmed |
Restoration that targets function as opposed to structure: replacing lost bivalve production and filtration |
title_sort |
restoration that targets function as opposed to structure: replacing lost bivalve production and filtration |
publishDate |
2003 |
url |
https://doi.org/10.17615/ns30-3327 https://cdr.lib.unc.edu/downloads/dv140313g?file=thumbnail https://cdr.lib.unc.edu/downloads/dv140313g |
long_lat |
ENVELOPE(165.700,165.700,-70.650,-70.650) |
geographic |
North Cape |
geographic_facet |
North Cape |
genre |
North Cape |
genre_facet |
North Cape |
op_source |
Marine Ecology - Progress Series, 264 |
op_relation |
https://doi.org/10.17615/ns30-3327 https://cdr.lib.unc.edu/downloads/dv140313g?file=thumbnail https://cdr.lib.unc.edu/downloads/dv140313g |
op_rights |
http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.17615/ns30-3327 |
_version_ |
1776202355352535040 |