39780f54-1297-48ed-a9e3-2eb4e6e363ba 1.0 DNA-based Taxonomic Relatedness 2025-10-01 This workflow assesses the taxonomic relationships among taxa in pelagic samples. It provides insight into community structure and the underlying ecological processes. First, species-level assignments from PEMA are harmonised against a standard taxonomy, such as WoRMS. Then, pairwise taxonomic distances are calculated using the Remote Virtual Laboratory for Taxonomic Computing (RvLab; Varsos et al. 2016), producing a distance matrix that captures distance among all detected species (taxa). This matrix can be normalised as needed and serves as the basis for diversity metrics, such as Faith's phylogenetic diversity, mean pairwise distance (MPD), or mean nearest taxon distance (MNTD). When relative abundance data are available, they can be incorporated to weight individual taxa. The resulting numerical index helps track shifts in community composition, detect homogenisation, and identify losses in taxonomic and functional diversity. Jose Zaiño LifeWatch ERIC josea.zaino@lifewatch.eu 1.0.0 https://metadatacatalogue.lifewatch.eu/srv/api/records/39780f54-1297-48ed-a9e3-2eb4e6e363ba/attachments/DNA-based%20taxonomic%20relatedness.png DNA-based taxonomic relatedness.png relatedness taxonomy DNA-based metabarcoding pelagic habitats PEMA WoRMS RvLab GPLv3 - <a href="https://www.gnu.org/licenses/gpl-3.0.html" target="_blank">https://www.gnu.org/licenses/gpl-3.0.html</a> https://my.lifewatch.eu/workflow/create-workflow-from-template/aneris-taxonomic WWW:LINK-1.0-http--link Link to the workflow PEMA Runner This service aims at running PEMA on all the sequences passed as input. It also requires a parameter file (a tsv file). https://metadatacatalogue.lifewatch.eu/srv/eng/catalog.search#/metadata/dec7b713-9757-4941-8632-a9ed73a2c4a1 PEMA Converter This service aims to reformat and produce final output in various formats for human and machine2machine reading. https://metadatacatalogue.lifewatch.eu/srv/eng/catalog.search#/metadata/b2424f84-1eba-4cb6-9798-f4275fd24a97 PEMA Sequences Retriever This service aims to download the sequences files (fasq files) in order to run PEMA. https://metadatacatalogue.lifewatch.eu/srv/eng/catalog.search#/metadata/4d149fe6-5317-41c8-adde-f72e59d5511b ARMS OTU Unifier This service aims at creating an OTU table with species information that can be processed by WoRMS and WRIMS. https://metadatacatalogue.lifewatch.eu/srv/eng/catalog.search#/metadata/a4ff4000-dcb2-41a7-9c61-7bff4ae20507 ARMS WoRMS Taxonomic Checker WoRMS taxon match webservice to check for the WoRMS match. https://metadatacatalogue.lifewatch.eu/srv/eng/catalog.search#/metadata/e9cb479f-9a36-4504-8d59-dd28520cec70 ARMS WRiMS Invasive Checker WRIMS taxon match webservice to check the known distribution of the species. https://metadatacatalogue.lifewatch.eu/srv/eng/catalog.search#/metadata/8df70810-490d-4dfd-964f-b73f28e34ba5 Taxa2Dis This service aims at transforming the matrix of the WRiMS component output into a valid format (agg_matrix) for the taxa2dis function. https://metadatacatalogue.lifewatch.eu/srv/eng/catalog.search#/metadata/3a549a64-6046-400a-b5c8-efeb1434edc6 Taxon Dive This service aims at calculating taxonomic distinction metrics per sample (Δ+, expectation, and dispersion), export the results, and generate a graph with the results. https://metadatacatalogue.lifewatch.eu/srv/eng/catalog.search#/metadata/10437224-3f11-43d3-bba2-3b12d7b9b00c https://helpdesk.lifewatch.eu