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Nutrient enrichment and fisheries exploitation: interactive effects on estuarine living resources and their management

Nutrient enrichment and fisheries exploitation: interactive effects on estuarine living resources and their management
Nutrient enrichment and fisheries exploitation: interactive effects on estuarine living resources and their management
Both fisheries exploitation and increased nutrient loadings strongly affect fish and shellfish abundance and production in estuaries. These stressors do not act independently; instead, they jointly influence food webs, and each affects the sensitivity of species and ecosystems to the other. Nutrient enrichment and the habitat degradation it sometimes causes can affect sustainable yields of fisheries, and fisheries exploitation can affect the ability of estuarine systems to process nutrients. The total biomass of fisheries landings in estuaries and semi-enclosed seas tends to increase with nitrogen loadings in spite of hypoxia, but hypoxia and other negative effects of nutrient over-enrichment cause declines in individual species and in parts of systems most severely affected. More thoroughly integrated management of nutrients and fisheries will permit more effective management responses to systems affected by both stressors, including the application of fisheries regulations to rebuild stocks negatively affected by eutrophication. Reducing fishing mortality may lead to the recovery of depressed populations even when eutrophication contributes to population declines if actions are taken while the population retains sufficient reproductive potential. New advances in modeling, statistics, and technology promise to provide the information needed to improve the understanding and management of systems subject to both nutrient enrichment and fisheries exploitation.
0018-8158
31-47
Breitburg, D.L.
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Craig, J.K.
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Fulford, R.S.
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Rose, K.A.
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Boynton, W.R.
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Brady, D.C.
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Ciotti, Benjamin J.
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Diaz, R.J.
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Friedland, K.D.
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Hagy III, J.D.
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Hart, D.R.
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Hines, A.H.
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Houde, E.D.
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Kolesar, S.E.
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Nixon, S.W.
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Rice, J.A.
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Secor, D.H.
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Targett, T.E.
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Breitburg, D.L.
d09ed69f-1069-44bd-ab35-66935db608a9
Craig, J.K.
8fc34e68-f009-495b-b56f-5d6030c8e9f6
Fulford, R.S.
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Rose, K.A.
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Boynton, W.R.
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Brady, D.C.
6094ccfe-d418-4a0c-af6a-9806af90bb0e
Ciotti, Benjamin J.
034551e4-d770-4cd2-80cc-b95c677938d2
Diaz, R.J.
6dc1d3aa-8df8-44ed-9cdf-b208805b1894
Friedland, K.D.
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Hagy III, J.D.
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Hart, D.R.
b15853d2-907d-410c-ad0d-baf1c4be011b
Hines, A.H.
daee0104-d206-4dbe-8557-b680816b3c1f
Houde, E.D.
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Kolesar, S.E.
b2f68813-3360-4ac1-8e81-2e3a343d7853
Nixon, S.W.
d8146d5a-6954-4d93-9821-90e428d0c9ae
Rice, J.A.
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Secor, D.H.
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Targett, T.E.
7c2f9c56-5a26-4e29-a5bb-388fc1240335

Breitburg, D.L., Craig, J.K., Fulford, R.S., Rose, K.A., Boynton, W.R., Brady, D.C., Ciotti, Benjamin J., Diaz, R.J., Friedland, K.D., Hagy III, J.D., Hart, D.R., Hines, A.H., Houde, E.D., Kolesar, S.E., Nixon, S.W., Rice, J.A., Secor, D.H. and Targett, T.E. (2009) Nutrient enrichment and fisheries exploitation: interactive effects on estuarine living resources and their management. Hydrobiologia, 629 (1), 31-47. (doi:10.1007/s10750-009-9762-4).

Record type: Article

Abstract

Both fisheries exploitation and increased nutrient loadings strongly affect fish and shellfish abundance and production in estuaries. These stressors do not act independently; instead, they jointly influence food webs, and each affects the sensitivity of species and ecosystems to the other. Nutrient enrichment and the habitat degradation it sometimes causes can affect sustainable yields of fisheries, and fisheries exploitation can affect the ability of estuarine systems to process nutrients. The total biomass of fisheries landings in estuaries and semi-enclosed seas tends to increase with nitrogen loadings in spite of hypoxia, but hypoxia and other negative effects of nutrient over-enrichment cause declines in individual species and in parts of systems most severely affected. More thoroughly integrated management of nutrients and fisheries will permit more effective management responses to systems affected by both stressors, including the application of fisheries regulations to rebuild stocks negatively affected by eutrophication. Reducing fishing mortality may lead to the recovery of depressed populations even when eutrophication contributes to population declines if actions are taken while the population retains sufficient reproductive potential. New advances in modeling, statistics, and technology promise to provide the information needed to improve the understanding and management of systems subject to both nutrient enrichment and fisheries exploitation.

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Published date: 1 August 2009
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 360012
URI: https://eprints.soton.ac.uk/id/eprint/360012
ISSN: 0018-8158
PURE UUID: a7268781-9082-4ae0-b477-8fe7659e92d5

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Date deposited: 21 Nov 2013 13:09
Last modified: 18 Jul 2017 03:16

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Contributors

Author: D.L. Breitburg
Author: J.K. Craig
Author: R.S. Fulford
Author: K.A. Rose
Author: W.R. Boynton
Author: D.C. Brady
Author: Benjamin J. Ciotti
Author: R.J. Diaz
Author: K.D. Friedland
Author: J.D. Hagy III
Author: D.R. Hart
Author: A.H. Hines
Author: E.D. Houde
Author: S.E. Kolesar
Author: S.W. Nixon
Author: J.A. Rice
Author: D.H. Secor
Author: T.E. Targett

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