Evidence map›Paper›PMID 28167770›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2017

Interaction between top-down and bottom-up control in marine food webs.

Christopher Philip Lynam, Marcos Llope, Christian Möllmann, Pierre Helaouët, Georgia Anne Bayliss-Brown, Nils C Stenseth

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

44 citing papers in PubMed.

  1. Article
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  4. Cannibalism, predation, and refuges of juvenile blue crabs from a 37-year experiment.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  5. Stress and resilience in northern European marine ecosystems.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  6. Article
  7. Review
  8. Article
  9. Weak effects of local prey density and spatial overlap on predation intensity in a temperate marine ecosystem.Ecological applications : a publication of the Ecological Society of America · 2025
    Article
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  12. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Christopher Philip LynamCentre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Lowestoft, Suffolk NR33 0HT, United Kingdom.
Marcos LlopeInstituto Español de Oceanografía, Centro Oceanográfico de Cádiz, E-11006 Cádiz, Andalusia, Spain.
Christian MöllmannInstitute of Hydrobiology and Fisheries Sciences, University of Hamburg, 22767 Hamburg, Germany.
Pierre HelaouëtSir Alister Hardy Foundation for Ocean Science, The Laboratory, Citadel Hill, Plymouth PL1 2PB, United Kingdom.
Georgia Anne Bayliss-BrownAquaTT, Dublin 8, Ireland.
Nils C StensethCentre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, NO-0316 Oslo, Norway; n.c.stenseth@ibv.uio.no.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Climate change and resource exploitation have been shown to modify the importance of bottom-up and top-down forces in ecosystems. However, the resulting pattern of trophic control in complex food webs is an emergent property of the system and thus unintuitive. We develop a statistical nondeterministic model, capable of modeling complex patterns of trophic control for the heavily impacted North Sea ecosystem. The model is driven solely by fishing mortality and climatic variables and based on time-series data covering >40 y for six plankton and eight fish groups along with one bird group (>20 y). Simulations show the outstanding importance of top-down exploitation pressure for the dynamics of fish populations. Whereas fishing effects on predators indirectly altered plankton abundance, bottom-up climatic processes dominate plankton dynamics. Importantly, we show planktivorous fish to have a central role in the North Sea food web initiating complex cascading effects across and between trophic levels. Our linked model integrates bottom-up and top-down effects and is able to simulate complex long-term changes in ecosystem components under a combination of stressor scenarios. Our results suggest that in marine ecosystems, pathways for bottom-up and top-down forces are not necessarily mutually exclusive and together can lead to the emergence of complex patterns of control.

Indexed as

Climate ChangeEcosystemFood ChainPlanktonSeawaterAnimalsBiomassBirdsFishesModels, StatisticalNorth SeaPopulation DynamicsPredatory Behaviorecosystem modelingmarine food web functioningregime shiftstrophic controlwasp-waist

Identifiers

PMID28167770
PMCPMC5338359

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.