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However, there is still a gap in knowledge of the main drivers influencing niche differentiation, particularly in communities composed by small-sized and inconspicuous species. The coastal epipelagic community structure of mid-trophic level species in the Northeast Atlantic was examined using stable isotope analysis to (1) decipher intrinsic and extrinsic factors promoting niche partitioning and (2) examine species divergence in the use of resources. A total of 474 individuals from a guild of 11 species were sampled during three years, and the influence of potential drivers of isotopic divergence was assessed. The niche partitioning was mainly determined by the taxonomic group in accordance with the fundamental principles of niche theory, which was consistent for both <jats:italic>\u03b4<\/jats:italic><jats:sup>13<\/jats:sup>C (i.e. habitat) and <jats:italic>\u03b4<\/jats:italic><jats:sup>15<\/jats:sup>N (i.e. prey). Body size was highly important in driving niche partitioning within species. Our results show that the predominant species in the guild were the most generalist, when compared with more specialised species with which they coexist. This study reveals that the intrinsic factors are determinant to decrease inter- and intra-specific niche overlap at the community level.<\/jats:p>","DOI":"10.1007\/s10750-023-05160-3","type":"journal-article","created":{"date-parts":[[2023,2,22]],"date-time":"2023-02-22T12:10:18Z","timestamp":1677067818000},"page":"1583-1599","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Drivers of niche partitioning in a community of mid-trophic level epipelagic species in the North Atlantic"],"prefix":"10.1007","volume":"850","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5470-5183","authenticated-orcid":false,"given":"Filipe R.","family":"Ceia","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9469-9489","authenticated-orcid":false,"given":"Yves","family":"Cherel","sequence":"additional","affiliation":[]},{"given":"Andreia V.","family":"Silva","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6360-2883","authenticated-orcid":false,"given":"Susana","family":"Garrido","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1385-5131","authenticated-orcid":false,"given":"Maria M.","family":"Ang\u00e9lico","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9258-6499","authenticated-orcid":false,"given":"Joana M.","family":"da Silva","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9884-4743","authenticated-orcid":false,"given":"Maria I.","family":"Laranjeiro","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9533-987X","authenticated-orcid":false,"given":"Jaime A.","family":"Ramos","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2023,2,22]]},"reference":[{"key":"5160_CR1","doi-asserted-by":"publisher","first-page":"109","DOI":"10.1023\/A:1025465705717","volume":"497","author":"PA Amundsen","year":"2003","unstructured":"Amundsen, P. 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