Global distribution and diversity ofChaetoceros(Bacillariophyta, Mediophyceae): integration of classical and novel strategies

Daniele De Luca; Wiebe H.C.F. Kooistra; Diana Sarno; Chetan C. Gaonkar; Roberta Piredda

doi:10.7717/peerj.7410

journal article Open Access Aug 19, 2019

Global distribution and diversity ofChaetoceros(Bacillariophyta, Mediophyceae): integration of classical and novel strategies

Daniele De Luca

Wiebe H.C.F. Kooistra Diana Sarno

Chetan C. Gaonkar Roberta Piredda

PeerJ Vol. 7 pp. e7410 · PeerJ

View at Publisher Save 10.7717/peerj.7410

Abstract

Information on taxa distribution is a prerequisite for many research fields, and biological records are a major source of data contributing to biogeographic studies. The Global Biodiversity Information Facility (GBIF) and the Ocean Biogeographic Information System (OBIS) are important infrastructures facilitating free and open access to classical biological data from several sources in both temporal and spatial scales. Over the last ten years, high throughput sequencing (HTS) metabarcoding data have become available, which constitute a great source of detailed occurrence data. Among the global sampling projects that have contributed to such data are Tara Oceans and the Ocean Sampling Day (OSD). Integration of classical and metabarcoding data may aid a more comprehensive assessment of the geographic range of species, especially of microscopic ones such as protists. Rare, small and cryptic species are often ignored in surveys or mis-assigned with the classical approaches. Here we show how integration of data from various sources can contribute to insight in the biogeography and diversity at the genus- and species-level usingChaetocerosas study system,one of the most diverse and abundant genera among marine planktonic diatoms.Chaetocerosrecords were extracted from GBIF and OBIS and literature data were collected by means of a Google Scholar search.Chaetocerosreferences barcodes where mapped against the metabarcode datasets of Tara Oceans (210 sites) and OSD (144 sites). We compared the resolution of different data sources in determining the global distribution of the genus and provided examples, at the species level, of detection of cryptic species, endemism and cosmopolitan or restricted distributions. Our results highlighted at genus level a comparable picture from the different sources but a more complete assessment when data were integrated. Both the importance of the integration but also the challenges related to it were illustrated.Chaetocerosdata collected in this study are organised and available in the form of tables and maps, providing a powerful tool and a baseline for further research in e.g., ecology, conservation and evolutionary biology.

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Details

Published: Aug 19, 2019
Vol/Issue: 7
Pages: e7410
License: View

Authors

D

Daniele De Luca

Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Napoli, Italy

W

Wiebe H.C.F. Kooistra

Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Napoli, Italy

D

Diana Sarno

Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Napoli, Italy

C

Chetan C. Gaonkar

Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Napoli, Italy; Department of Oceanography, Texas A&M University, College Station, TX, United States of America

R

Roberta Piredda

Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Napoli, Italy

Funding

Italian Ministry of Education, University and Research

FIRB Biodiversitalia Award: RBAP10A2T4

Cite This Article

Daniele De Luca, Wiebe H.C.F. Kooistra, Diana Sarno, et al. (2019). Global distribution and diversity ofChaetoceros(Bacillariophyta, Mediophyceae): integration of classical and novel strategies. PeerJ, 7, e7410. https://doi.org/10.7717/peerj.7410

Global distribution and diversity ofChaetoceros(Bacillariophyta, Mediophyceae): integration of classical and novel strategies

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