Evidence map›Paper›PMID 33906403›Full record

ArticleProceedings. Biological sciences2021

Environmental DNA metabarcoding reveals and unpacks a biodiversity conservation paradox in Mediterranean marine reserves.

Emilie Boulanger, Nicolas Loiseau, Alice Valentini, Véronique Arnal, Pierre Boissery, Tony Dejean, Julie Deter, Nacim Guellati, Florian Holon, Jean-Baptiste Juhel and 3 more

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

  1. Review
  2. Fish diversity and community turnover across protection zones in multiuse marine protected areas.Conservation biology : the journal of the Society for Conservation Biology · 2026
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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

13 authors.

Emilie BoulangerCEFE, Univ Montpellier, CNRS, EPHE-PSL University, IRD, Montpellier, France.
Nicolas LoiseauMARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France.
Alice ValentiniSPYGEN, Le Bourget-du-Lac, France.
Véronique ArnalCEFE, Univ Montpellier, CNRS, EPHE-PSL University, IRD, Montpellier, France.
Pierre BoisseryAgence de l'Eau Rhône-Méditerranée-Corse, Délégation de Marseille, Marseille, France.
Tony DejeanSPYGEN, Le Bourget-du-Lac, France.
Julie DeterAndromède Océanologie, Carnon, France.
Nacim GuellatiMARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France.
Florian HolonAndromède Océanologie, Carnon, France.
Jean-Baptiste JuhelMARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France.
Philippe LenfantCEFREM, CNRS, UPVD, Université de Perpignan, Perpignan, France.
Stéphanie ManelCEFE, Univ Montpellier, CNRS, EPHE-PSL University, IRD, Montpellier, France.
David MouillotMARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although we are currently experiencing worldwide biodiversity loss, local species richness does not always decline under anthropogenic pressure. This conservation paradox may also apply in protected areas but has not yet received conclusive evidence in marine ecosystems. Here, we survey fish assemblages in six Mediterranean no-take reserves and their adjacent fishing grounds using environmental DNA (eDNA) while controlling for environmental conditions. We detect less fish species in marine reserves than in nearby fished areas. The paradoxical gradient in species richness is accompanied by a marked change in fish species composition under different managements. This dissimilarity is mainly driven by species that are often overlooked by classical visual surveys but detected with eDNA: cryptobenthic, pelagic, and rare fishes. These results do not negate the importance of reserves in protecting biodiversity but shed new light on how under-represented species groups can positively react to fishing pressure and how conservation efforts can shape regional biodiversity patterns.

Indexed as

DNA, EnvironmentalEcosystemAnimalsBiodiversityConservation of Natural ResourcesDNA Barcoding, TaxonomicFishesDNA, Environmentalalpha and beta diversityenvironmental DNA metabarcodingmarine reserves

Identifiers

PMID33906403
PMCPMC8080007

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.