期刊
GLOBAL ECOLOGY AND CONSERVATION
卷 32, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.gecco.2021.e01909
关键词
Biodiversity conservation; Morphological taxonomy; Mediterranean Sea; Caribbean Sea; Indonesian Sea; Red Sea
资金
- European Marine Research Network (EUROMARINE Network)
- Inter-Departmental Research Centre for Environmental Sciences (CIRSA - UniBo)
- Cultural Heritage Department (DBC-UniBo)
- Fondazione Flaminia
- ERANet Mar-Tera Project SEAMoBB (Solutions for sEmi-Automated Monitoring of Benthic Biodiversity)
- Research Project PopCOmics (Agencia Estatal de Investigacion of Spain, FEDER) [CTM2017-88080]
- European Commission
The study presents the current status of marine animal species globally, comparing data from the past decade and identifying disparities in COI barcoding coverage between different geographic regions and phyla. Barcoding coverage varies among different Large Marine Ecosystems and phyla, with some phyla like Porifera, Bryozoa, and Platyhelminthes being underrepresented compared to others. The increase in barcoded marine species from 9.5% to 14.2% over the past decade highlights the need for concrete collaborative efforts to expand animal barcoding libraries in the marine realm for the future.
Marine biodiversity underpins ecosystem health and societal well-being. Preservation of biodiversity hotspots is a global challenge. Molecular tools, like DNA barcoding and metabarcoding, hold great potential for biodiversity monitoring, possibly outperforming more traditional taxonomic methods. However, metabarcoding-based biodiversity assessments are limited by the availability of sequences in barcoding reference databases; a lack thereof results in high percentages of unassigned sequences. In this study, we (i) present the current status of known vs. barcoded marine animal species at a global scale based on online taxonomic and genetic databases (NCBI and BOLD) and (ii) compare the current status with data from ten years ago. Then, we focused our attention on occurrence data of marine animal species from five Large Marine Ecosystems (LMEs) representing the most well studied biodiversity hotspots, to identify dispar-ities in COI barcoding coverage between geographic regions and at phylum level. Barcoding coverage varied among LMEs (from 36.8% to 62.4% COI-barcoded species) and phyla (from 4.8% to 74.7% COI-barcoded species), with Porifera, Bryozoa and Platyhelminthes being highly un-derrepresented, compared to Chordata, Arthropoda and Mollusca. We demonstrate that barcoded marine species increased from 9.5% to 14.2% since the last assessment in 2011, due to new barcodes both on already described species and on newly described ones (about 15,000 new species were described from 2011 to 2021). The next ten years will thus be crucial to enroll concrete collaborative measures and long term initiatives (e.g., Horizon 2030, Ocean Decade) to boost animal barcoding libraries for the marine realm.
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