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    The influence of seabirds on their breeding, roosting and nesting grounds: A systematic review and meta‐analysis

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    Name:
    Grant et al. 2021_Accepted ...
    Embargo:
    2023-06-07
    Size:
    1.363Mb
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    PDF
    Description:
    Accepted Version
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    Authors
    Grant, Megan L
    Bond, AL cc
    Lavers, Jennifer L
    Issue date
    2022-06
    Submitted date
    2021-06-16
    Subject Terms
    enrichment
    guano
    marine-derived
    mobile link
    vector
    
    Metadata
    Show full item record
    Abstract
    Seabird species world-wide are integral to both marine and terrestrial environments, connecting the two systems by transporting vast quantities of marine-derived nutrients and pollutants to terrestrial breeding, roosting and nesting grounds via the deposition of guano and other allochthonous inputs (e.g. eggs, feathers). We conducted a systematic review and meta-analysis and provide insight into what types of nutrients and pollutants seabirds are transporting, the influence these subsidies are having on recipient environments, with a particular focus on soil, and what may happen if seabird populations decline. The addition of guano to colony soils increased nutrient levels compared to control soils for all seabirds studied, with cascading positive effects observed across a range of habitats. Deposited guano sometimes led to negative impacts, such as guanotrophication, or guano-induced eutrophication, which was often observed where there was an excess of guano or in areas with high seabird densities. While the literature describing nutrients transported by seabirds is extensive, literature regarding pollutant transfer is comparatively limited, with a focus on toxic and bioaccumulative metals. Research on persistent organic pollutants and plastics transported by seabirds is likely to increase in coming years. Studies were limited geographically, with hotspots of research activity in a few locations, but data were lacking from large regions around the world. Studies were also limited to seabird species listed as Least Concern on the IUCN Red List. As seabird populations are impacted by multiple threats and steep declines have been observed for many species world-wide, gaps in the literature are particularly concerning. The loss of seabirds will impact nutrient cycling at localized levels and potentially on a global scale as well, yet it is unknown what may truly happen to areas that rely on seabirds if these populations disappear.
    Citation
    Grant, M. L., Bond, A. L. & Lavers, J. L. (2022). The influence of seabirds on their breeding, roosting and nesting grounds: A systematic review and meta-analysis. Journal of Animal Ecology, 91, 1266– 1289. https://doi.org/10.1111/1365-2656.13699
    Publisher
    Wiley
    Journal
    Journal of Animal Ecology
    URI
    http://hdl.handle.net/10141/623010
    DOI
    10.1111/1365-2656.13699
    Type
    Journal Article
    Item Description
    Copyright: © 2021 The attached document is the author(’s’) final accepted/submitted version of the journal article. You are advised to consult the publisher’s version if you wish to cite from it
    ISSN
    0021-8790
    EISSN
    1365-2656
    ae974a485f413a2113503eed53cd6c53
    10.1111/1365-2656.13699
    Scopus Count
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    Life sciences

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