Date (Creation)

2023-05-25

Date (Publication)

2024-04-01

Identifier

FR-330-715-368-00032-IFR_BIOINFO_20230601_RMPF_MG_P3M_TRIDACNA_MAXIMA

Credit

Ifremer (RMPF)

GEMET - INSPIRE themes, version 1.0

• Habitats and biotopes

Thèmes Sextant

• /Biological Environment/Bioinformatics

Type de jeux de donnée ODATIS

• /Sequences

ODATIS aggregation parameters and Essential Variable names

• Bioinformatics

Use limitation

CC-BY (Creative Commons - Attribution)

Access constraints

License

Use constraints

License

Metadata language

English

Character set

UTF8

Topic category

• Environment

Begin date

2022-07-17

End date

2022-09-13

Reference system identifier

EPSG / WGS 84 (EPSG:4326) / 8.6

Distribution format

• ( )

OnLine resource

/home/ref-bioinfo-public/ifremer/rmpf/P3M ( NETWORK:LINK )

OnLine resource

Download link ( WWW:DOWNLOAD-1.0-link--download )

OnLine resource

Publication ENA ( WWW:LINK-1.0-http--link )

OnLine resource

Digital Object Identifier (DOI) ( WWW:LINK-1.0-http--metadata-URL )

Hierarchy level

Dataset

Statement

This study aimed to evaluate the impact of incrementally increasing plastic concentrations on the bacterial compartment in marine environments. We reproduced simplified tropical ecosystems in 9 seawater mesocosms, then immersed different quantities of macroplastics from pearl farm (copolymers of PP and PE). We then monitored the bacterial communities in three compartments: the water column, the Tridacna maxima and the plastic biofilm to identify the threshold at which modifications in the bacterial compartment occur. The objective was to identify early markers among impacted bacteria, indicative of potential risks exceeding critical thresholds for marine microbial fauna. Despite finding no influence of plastic concentration on bacterial diversity, significant impacts were observed for bacterial assemblages based on time and sample type. Digging deeper, our analysis at the individual bacterial scale revealed that at the highest plastic concentration (5.46g/L), a positive correlation was observed for 29 bacterial genera. This suggests that certain bacterial genera thrive at extreme concentrations of plastic, leading to an overabundance of these specific bacteria referred to here as candidate ASVs. The overabundance of candidate ASVs in ours mesocosms could be attributed to imbalanced competition relationships between bacteria, favouring genera less sensitive to environmental pollutants. Some of these bacteria have known ecological functions, including plastic degradation and pathogenicity, aligning with prior studies warning of the dangers associated with macroplastics in water, potentially promoting the emergence of pathogenic families by serving as substrates and modifying microbial interactions.

File identifier

61da6771-38a5-4043-89af-87209ca51879 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2024-05-02T10:11:35.436Z

Metadata standard name

ISO 19115:2003/19139 - SEXTANT

Metadata standard version

1.0