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    The Big Seaweed Search: Evaluating a citizen science project for a difficult to identify group of organisms

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    Authors
    Brodie, J cc
    Kunzig, Sarah
    Agate, Jules
    Yesson, Chris
    Robinson, Lucy
    Issue date
    2023-01-04
    Submitted date
    2022-06-24
    Subject Terms
    citizen science
    conservation
    coralline algae
    data verification
    large brown seaweeds
    non-native species
    ocean acidification
    
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    Abstract
    1. The Big Seaweed Search invites people to survey UK seashores for 14 conspicuous seaweeds. The science investigates: (i) impact of sea temperature rise; (ii) spread of non-native species; and (iii) impact of ocean acidification. Survey data submitted between June 2016 and May 2020 were analysed to evaluate and explore project directions in relation to citizen science project development. 2. Of the 378 surveys submitted, 1,414 people participated, contributing 1,531 person hours. Surveys were undertaken around the UK, with the highest proportion (46.7%) in the south west and the lowest (3.7%) in the north east. After data verification, 1,007 (54%) records were accepted. Fucus serratus had the highest number of entries correctly identified (66%) and Undaria pinnatifida the lowest (5%), inferring that at least some seaweeds can be difficult to identify, although the overall misidentification rate was relatively low (c. 15%). 3. Apart from Alaria esculenta, U. pinnatifida and Saccharina latissima, the large brown seaweeds were abundant on at least some shores. Non-natives Sargassum muticum and Asparagopsis armata, were band-forming but in low numbers. Coralline algae, whilst band-forming on some shores, were most commonly patchy or sparse in abundance. Revisits, i.e. repeat surveys, at the same site with an interval of at least 1 year, are relatively low, with 18 sites revisited once and three sites revisited twice. 4. Currently, data are insufficient to determine whether any changes in abundance could be detected. 5. This study highlights areas where project developments can enhance data quality and quantity, e.g. better identification resources, training programmes for dedicated volunteers, and an annual focus week of activities. The project framed around climate change impacts, aims to raise awareness of the ecological importance of, and threats faced by, this understudied habitat and introduce conservation concepts including the need to protect common species showing signs of decline.
    Citation
    Brodie, J., Kunzig, S., Agate, J., Yesson, C. & Robinson, L. (2022). The Big Seaweed Search: Evaluating a citizen science project for a difficult to identify group of organisms. Aquatic Conservation: Marine and Freshwater Ecosystems, 1–12. https://doi.org/10.1002/aqc. 3903
    Publisher
    Wiley
    Journal
    Aquatic Conservation: Marine and Freshwater Ecosystems
    URI
    http://hdl.handle.net/10141/623038
    DOI
    10.1002/aqc.3903
    Type
    Journal Article
    Item Description
    Copyright © 2022, John Wiley & Sons Ltd. This document is the author’s accepted version of the journal article. You are advised to consult the published version if you wish to cite from it.
    ISSN
    1052-7613
    EISSN
    1099-0755
    ae974a485f413a2113503eed53cd6c53
    10.1002/aqc.3903
    Scopus Count
    Collections
    Life sciences

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