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Deviation from neutral species abundance distributions unveils geographical differences in the structure of diatom communities

Authors :
Simons Foundation
Stazione Zoologica Anton Dohrn
European Commission
Pigani, Emanuele
Mele, Bruno Hay
Campese, Lucia
Ser-Giacomi, Enrico
Ribera, Maurizio
Iudicone, Daniele
Suweis, Samir
Simons Foundation
Stazione Zoologica Anton Dohrn
European Commission
Pigani, Emanuele
Mele, Bruno Hay
Campese, Lucia
Ser-Giacomi, Enrico
Ribera, Maurizio
Iudicone, Daniele
Suweis, Samir
Publication Year :
2024

Abstract

In recent years, the application of metagenomics techniques has advanced our understanding of plankton communities and their global distribution. Despite this progress, the relationship between the abundance distribution of diatom species and varying marine environmental conditions remains poorly understood. This study, leveraging data from the Tara Oceans expedition, tests the hypothesis that diatoms in sampled stations display a consistent species abundance distribution structure, as though they were sampled from a single ocean-wide metacommunity. Using a neutral sampling theory, we thus develop a framework to estimate the structure and diversity of diatom communities at each sampling station given the shape of the species abundance distribution of the metacommunity and the information of a reference station. Our analysis reveals a substantial temperature gradient in the discrepancies between predicted and observed biodiversity across the sampled stations. These findings challenge the hypothesis of a single neutral metacommunity, indicating that environmental differences substantially influence both the composition and structure of diatom communities.

Details

Database :
OAIster
Notes :
English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1442729682
Document Type :
Electronic Resource