Environmental DNA reveals seasonal shifts and potential interactions in a marine community

Anni Djurhuus, C.J Closek, Ryan P. Kelly, Kathleen Pitz, Reiko Michisaki, Hilary A. Starks, Kristine R. Walz, Elizabeth A. Andruszkiewicz, Emily Olesin, Katherine Hubbard, Enrique Montes, Daniel Otis, Frank E. Muller-Karger, Francisco P. Chavez, Alexandria B. Boehm, Mya Breitbart

Research output: Contribution to journalArticlepeer-review

81 Citations (Scopus)

Abstract

Environmental DNA (eDNA) analysis allows the simultaneous examination of organisms across multiple trophic levels and domains of life, providing critical information about the complex biotic interactions related to ecosystem change. Here we used multilocus amplicon sequencing of eDNA to survey biodiversity from an eighteen-month (2015–2016) time-series of seawater samples from Monterey Bay, California. The resulting dataset encompasses 663 taxonomic groups (at Family or higher taxonomic rank) ranging from microorganisms to mammals. We inferred changes in the composition of communities, revealing putative interactions among taxa and identifying correlations between these communities and environmental properties over time. Community network analysis provided evidence of expected predator-prey relationships, trophic linkages, and seasonal shifts across all domains of life. We conclude that eDNA-based analyses can provide detailed information about marine ecosystem dynamics and identify sensitive biological indicators that can suggest ecosystem changes and inform conservation strategies.
Original languageEnglish
Article number254
Pages (from-to)1-9
Number of pages9
JournalNature Communications
Volume11
Issue number1
Publication statusPublished - 14 Jan 2020

Keywords

  • Environmental DNA
  • eDNA
  • marine community

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