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<p>Kelp are foundation species that create structurally diverse biogenic habitats along temperate coastlines. Baseline data on the structure of kelp forests and their associated assemblages is essential for detecting change and informing effective management and restoration, especially in the context of climate change and increasing anthropogenic pressures. In the United Kingdom (UK), research has tended to focus on subtidal kelp forests, particularly those along northern and western coastlines, meaning there is a notable gap in our understanding of the UK’s intertidal kelp forests, and those along the east coast. Using trained citizen scientists, we characterised the structure (i.e. percent cover, length, age) of intertidal kelp forests and investigated the communities associated with <i>Laminaria digitata</i> and <i>Laminaria hyperborea</i> microhabitats (i.e. holdfast, stipe and blade) at eight sites spanning ~ 250&#xa0;km along the north-east coast of the UK. We found that the structure of kelp forests (i.e. length and age) was comparable across sites and kelp species, but that <i>L. digitata</i> and <i>L. hyperborea</i> were dominant, while <i>Saccharina latissima</i> and <i>Alaria esculenta</i> occurred in lower abundances. Assemblages associated with <i>L. digitata</i> and <i>L. hyperborea</i> microhabitats were diverse and abundant, but there was significant variation in their composition across microhabitats and between kelp species. Collectively, this work highlights the importance of intertidal kelp forests as repositories of biodiversity and provides a comprehensive baseline upon which to monitor future change, while the inclusion of trained citizen scientists demonstrates the value of community participation in increasing the scope of research efforts.</p>

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The structure of intertidal kelp forests and their associated assemblages along the north-east coast of the United Kingdom

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月4日

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  • Hannah S. Earp,
  • Jane Delany,
  • Heather Sugden

摘要

Kelp are foundation species that create structurally diverse biogenic habitats along temperate coastlines. Baseline data on the structure of kelp forests and their associated assemblages is essential for detecting change and informing effective management and restoration, especially in the context of climate change and increasing anthropogenic pressures. In the United Kingdom (UK), research has tended to focus on subtidal kelp forests, particularly those along northern and western coastlines, meaning there is a notable gap in our understanding of the UK’s intertidal kelp forests, and those along the east coast. Using trained citizen scientists, we characterised the structure (i.e. percent cover, length, age) of intertidal kelp forests and investigated the communities associated with Laminaria digitata and Laminaria hyperborea microhabitats (i.e. holdfast, stipe and blade) at eight sites spanning ~ 250 km along the north-east coast of the UK. We found that the structure of kelp forests (i.e. length and age) was comparable across sites and kelp species, but that L. digitata and L. hyperborea were dominant, while Saccharina latissima and Alaria esculenta occurred in lower abundances. Assemblages associated with L. digitata and L. hyperborea microhabitats were diverse and abundant, but there was significant variation in their composition across microhabitats and between kelp species. Collectively, this work highlights the importance of intertidal kelp forests as repositories of biodiversity and provides a comprehensive baseline upon which to monitor future change, while the inclusion of trained citizen scientists demonstrates the value of community participation in increasing the scope of research efforts.