Metadata CatalogueMetadata Cataloguehttps://metadatacatalogue.lifewatch.eu/https://metadatacatalogue.lifewatch.eu//srv/eng/portal.opensearch https://metadatacatalogue.lifewatch.eu//srv/eng/rdf.search?any= engContinents, countries, sea regions of the world.https://metadatacatalogue.lifewatch.eu//srv/eng/thesaurus.download?ref=external.place.regionsecoportal.fos_1.rdfhttps://metadatacatalogue.lifewatch.eu//srv/eng/thesaurus.download?ref=external.ecoportal.fosd25219d3-fe11-4052-879a-eb2e15ca295cIndividual and population-scale carbon and nitrogen isotopic signatures of Procambarus clarkii in invaded freshwater ecosystemsTwo geo-referenced datasets with carbon and nitrogen isotopic values of Procambarus clarkii in invaded inland waters resolved respectively at population- and individual-scale. The population-scale dataset consists of 160 δ13C and δ15N isotopic values of P. clarkii and its potential prey, including living and non-living primary producers and benthic invertebrates. The individual-scale dataset consists of 1,168 isotopic individual records of P. clarkii. The isotopic information included within the two datasets was gathered from 10 countries located in Europe, Asia, Africa, and North America, and from a total of 41 studies published between 2005 and 2021.Procambarus clarkiiRed swamp crayfishLouisiana crayfishInvasive Alien SpeciesStable isotopeInland watersTrophic habitsTrophic positionTrophic niche <http://www.opengis.net/def/crs/OGC/1.3/CRS84> Polygon((-180 -90, -180 90, 180 90, 180 -90, -180 -90)) DOIhttps://doi.org/10.48372/d25219d3-fe11-4052-879a-eb2e15ca295cInfo and download page on LifeWatch Italy Data Portalhttps://data.lifewatchitaly.eu/handle/123456789/129785University of SalentoNational Research Council (CNR), Institute of Research on Terrestrial Ecosystems (IRET)