Evidence map›Paper›PMID 31584198›Full record

ArticleThe Journal of animal ecology2020

Low fitness at low latitudes: Wintering in the tropics increases migratory delays and mortality rates in an Arctic breeding shorebird.

Jeroen Reneerkens, Tom S L Versluijs, Theunis Piersma, José A Alves, Mark Boorman, Colin Corse, Olivier Gilg, Gunnar Thor Hallgrimsson, Johannes Lang, Bob Loos and 5 more

Abstract read
In one paragraph

Article in The Journal of animal ecology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing 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

18 citing papers in PubMed.

  1. Article
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  3. Migration shapes senescence in a long-lived bird.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  16. Benefits of protected areas for nonbreeding waterbirds adjusting their distributions under climate warming.Conservation biology : the journal of the Society for Conservation Biology · 2021
    Article
  17. Article
  18. Article
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

15 authors.

Jeroen ReneerkensRudi Drent Chair in Global Flyway Ecology, Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands.ORCID 0000-0003-0674-8143
Tom S L VersluijsRudi Drent Chair in Global Flyway Ecology, Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands.
Theunis PiersmaRudi Drent Chair in Global Flyway Ecology, Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands.ORCID 0000-0001-9668-466X
José A AlvesDBIO & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal.ORCID 0000-0001-7182-0936
Mark BoormanGlobal Flyway Network, Swakopmund, Namibia.
Colin CorseOrkney Ringing Group, Kirkwall, UK.
Olivier GilgUMR 6249 Chrono-Environnement, Université de Bourgogne Franche-Comté, Besançon, France.ORCID 0000-0002-9083-4492
Gunnar Thor HallgrimssonInstitute of Biology, University of Iceland, Reykjavik, Iceland.
Johannes LangGroupe de Recherche en Ecologie Arctique, Francheville, France.ORCID 0000-0002-7387-795X
Bob LoosGlobal Flyway Network, Texel, The Netherlands.
Yaa Ntiamoa-BaiduCentre for African Wetlands, University of Ghana, Legon, Accra, Ghana.ORCID 0000-0002-3915-3341
Alfred A NuohCentre for African Wetlands, University of Ghana, Legon, Accra, Ghana.
Peter M PottsFarlington Ringing Group, Warsash, Southampton, UK.
Job Ten HornDepartment of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, Texel, The Netherlands.
Tamar LokDepartment of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, Texel, The Netherlands.ORCID 0000-0003-3753-8501

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Evolutionary theories of seasonal migration generally assume that the costs of longer migrations are balanced by benefits at the non-breeding destinations. We tested, and rejected, the null hypothesis of equal survival and timing of spring migration for High Arctic breeding sanderling Calidris alba using six and eight winter destinations between 55°N and 25°S, respectively. Annual apparent survival was considerably lower for adult birds wintering in tropical West Africa (Mauritania: 0.74 and Ghana: 0.75) than in three European sites (0.84, 0.84 and 0.87) and in subtropical Namibia (0.85). Moreover, compared with adults, second calendar-year sanderlings in the tropics, but not in Europe, often refrained from migrating north during the first possible breeding season. During northward migration, tropical-wintering sanderlings occurred at their final staging site in Iceland 5-15 days later than birds wintering further north or south. Namibia-wintering sanderlings tracked with solar geolocators only staged in West Africa during southward migration. The low annual survival, the later age of first northward migration and the later passage through Iceland during northward migration of tropical-wintering sanderlings, in addition to the skipping of this area during northward but not southward migration by Namibia-wintering sanderlings, all suggest they face issues during the late non-breeding season in West Africa. Migrating sanderlings defy long distances but may end up in winter areas with poor fitness prospects. We suggest that ecological conditions in tropical West Africa make the fuelling prior to northward departure problematic.

Indexed as

Animal MigrationBreedingAnimalsArctic RegionsEuropeGhanaIcelandMauritaniaNamibiaSeasonsdemographyfitnessmigrationnutrient storage strategiessite fidelitysolar geolocationsurvivaltiming

Identifiers

PMID31584198
PMCPMC7078868

What OpenQuestion holds

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LicenceCC BY-NC-ND
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.