Skip to content

Research at St Andrews

Sensitivity of multispecies maximum sustainable yields to trends in the top (marine mammals) and bottom (primary production) compartments of the southern North Sea food-web

Research output: Contribution to journalArticle

Abstract

In marine ecosystems, maximum sustainable yield considerations are affected by any substantial changes that occur in the top and bottom compartments of the food-web. This study explores how the southern North Sea’s fisheries may need to adjust their fishing efforts to maintain optimum yields of sole, plaice, cod and brown shrimps under increased marine mammal populations and a reduced primary productivity. We constructed plausible scenarios of ongoing food-web changes using the results of Bayesian age-structured population models to estimate carrying capacities of harbour porpoises (Phocoena phocoena) and grey seals (Halichoerus grypus). Losses in primary productivity were predicted by lower trophic level ecosystem models. These scenarios were implemented in a food-web model of the southern North Sea. For each scenario, we sought mixed-fleet fishing efforts that would deliver maximum yields of sole, plaice, cod and brown shrimp combined. We also did so for a baseline run with unaltered mammal and primary production, and compared the differences in optimal fishing strategies, predicted yields, and states of the stocks between the scenarios. We found stocks and yields to be far more sensitive to changes in primary productivity than to increased marine mammal predation. The latter predominantly impacted cod, and even benefitted brown shrimps compared to the baseline run. Under 30% reduced primary productivity, fishing efforts had to be reduced by 50% to still provide maximum yields, whereas the marine mammal scenario induced no need to adjust the fishing regime. This draws attention to the potential gains of incorporating bottom-up processes into long-term management considerations, while marine mammal predation may be less of a concern, in particular for flatfish fisheries in the North Sea, and may even benefit shrimp trawlers because of reduced predation on shrimp from fish predators.
Close

Details

Original languageEnglish
Article numbere0210882
Number of pages18
JournalPLoS ONE
Volume14
Issue number1
DOIs
Publication statusPublished - 28 Jan 2019

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Arctic seals as tracers of environmental and ecological change

    de la Vega, C., Mahaffey, C., Tuerena, R. E., Yurkowski, D. J., Ferguson, S. H., Stenson, G. B., Nordøy, E. S., Haug, T., Biuw, M., Smout, S., Hopkins, J., Tagliabue, A. & Jeffreys, R. M., 12 Nov 2020, In : Limnology and Oceanography Letters. Early View, 9 p.

    Research output: Contribution to journalArticle

  2. Harbour Seal Decline – vital rates and drivers: Report to Scottish Government HSD2.

    Arso Civil, M., Langley, I., Law, A., Hague, E., Jacobson, E. K., Thomas, L., Smout, S. C., Hewitt, R., Duck, C. D., Morris, C., Brownlow, A., Davison, N., Doeschate, M., McConnell, B. J. & Hall, A. J., 2020, Sea Mammal Research Unit. 46 p.

    Research output: Book/ReportOther report

  3. Effect of temporal and spatial resolution on identification of fishing activities in small-scale fisheries using pots and traps

    Mendo, T., Smout, S., Russo, T., D'Andrea, L., James, M. & Maravelias, C., 1 Dec 2019, In : ICES Journal of Marine Science. 76, 6, p. 1601-1609 9 p.

    Research output: Contribution to journalArticle

  4. Environment-sensitive mass changes influence breeding in a capital breeding marine top predator

    Smout, S. C., King, R. & Pomeroy, P., 20 Nov 2019, In : Journal of Animal Ecology. Early View, 13 p.

    Research output: Contribution to journalArticle

Related by journal

  1. PLoS ONE (Journal)

    Joanna Louise Kershaw (Reviewer)

    18 Mar 2019

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  2. PLoS ONE (Journal)

    Catharine Penelope Cross (Member of editorial board)

    1 Sep 2018 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

  3. PLoS ONE (Journal)

    Will Cresswell (Reviewer)

    23 May 2018

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  4. PLoS ONE (Journal)

    Barbara Dritschel (Member of editorial board)

    May 2018 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

  5. PLoS ONE (Journal)

    Matt Carter (Reviewer)

    2018

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

Related by journal

  1. Are in vitro and in silico approaches used appropriately for animal-based major depressive disorder research?

    Carvalho, C., Varela, S. A. M., Marques, T. A., Knight, A. & Vicente, L., 24 Jun 2020, In : PLoS ONE. 15, 6, 6 p., e0233954.

    Research output: Contribution to journalArticle

  2. Artists on the edge of the world: an integrated approach to the study of Magdalenian engraved stone plaquettes from Jersey (Channel Islands)

    Bello, S. M., Blinkhorn, E., Needham, A., Bates, M., Duffy, S., Little, A., Pope, M., Scott, B., Shaw, A., Welch, M. D., Kinnaird, T., Millar, L., Robinson, R. & Conneller, C., 19 Aug 2020, In : PLoS ONE. 15, 8, 40 p., e0236875.

    Research output: Contribution to journalArticle

  3. Drivers of the opioid crisis: An appraisal of financial conflicts of interest in clinical practice guideline panels at the peak of opioid prescribing

    Spithoff, S., Leece, P., Sullivan, F., Persaud, N., Belesiotis, P. & Steiner, L., 24 Jan 2020, In : PLoS ONE. 15, 1, 15 p., e0227045.

    Research output: Contribution to journalArticle

  4. Passive acoustic methods for tracking the 3D movements of small cetaceans around marine structures

    Gillespie, D., Palmer, L., MacAulay, J., Sparling, C. & Hastie, G., 29 May 2020, In : PLoS ONE. 15, 5, 16 p., e0229058.

    Research output: Contribution to journalArticle

  5. Potentially inappropriate prescriptions according to explicit and implicit criteria in patients with multimorbidity and polypharmacy. MULTIPAP: a cross-sectional study

    Lopez-Rodriguez, J. A., Rogero-Blanco, E., Aza-Pascual-Salcedo, M., Lopez-Verde, F., Pico-Soler, V., Leiva-Fernandez, F., Prados-Torres, J. D., Prados-Torres, A., Cura-González, I., MULTIPAP group & Azcoaga-Lorenzo, A., 12 Aug 2020, In : PLoS One. 15, 8, 20 p., e0237186.

    Research output: Contribution to journalArticle

ID: 257557958

Top