8b1f65dc-0568-4fb0-943c-029a96e2654a Gabriella Caruso National Research Council 00390906015423 Messina 98122 Italia gabriella.caruso@cnr.it 2025-05-12T14:21:04 ISO 19139 1.0 WGS84 Microbial colonization of benthic ANTarctic environments: response of microbial abundances, diversity, activities and larval settlement to natural or anthropogenic disturbances and search for secondary metabolites (ANT-Biofilm, PNRA16_00105) 2023-03-15 https://antarcticdatacenter.cnr.it/geonetwork/srv/api/records/8b1f65dc-0568-4fb0-943c-029a96e2654a The ANT-Biofilm research project (PNRA16_00105) concerned the study of microbial colonization processes in coastal environments of Terra Nova Bay (Ross Sea), through the analysis of the microbial biofilm (bacteria, microalgae) and macrobenthic settlement on plastic substrates, with the aim of determining their possible variations caused by natural or anthropogenic disturbances (variations in salinity or the presence of contaminants, respectively). Microbial biofilms, which play a key role as a substrate for larval settlement of many species of invertebrates, constitute hot-spots of microbial diversity; and it is also known that the communities a microbial are capable of responding rapidly to changing environmental conditions, acting as potential "sentinels" of natural or anthropic perturbations that recently are threatening the Antarctic biota. During the first year of activity (XXXIII Italian expedition, November 2017) stainless steel structures were fixed on the seabed of Road Bay and Tethys Bay mounting panels of artificial substrates (Polyvinyl Chloride, PVC and PolyEthylene, PE) for colonization, which during the XXXIV expedition (November 2018) were retrieved in order to study the fouling formation processes at different levels of biological complexity (from microbial community including bacteria and microalgae to benthic invertebrates) and to evaluate their evolution in two coastal sites differently exposed to natural or anthropogenic forcings. The specific objectives of the project were: 1. to evaluate in two different sites of Terra Nova Bay the short- and medium-term response (in terms of abundance and activity) of the microbiota and of the larval settlement to natural perturbations (as salinity gradients due to the melting of the Amorphous Glacier at Tethys Bay) or anthropic perturbation (such as that due to the wastewater inputs at Road Bay); 2. to improve knowledge of structure-function relationships within the microbial community and to explore possible links between microbial biofilm diversity and macrobenthos colonization; 3. to screen microbial isolates for their ability to produce biofilm and secondary metabolites (e.g with antibiotic or immunosuppressive function), and to secrete hydrolytic enzymes; 4. to characterize the study sites according to their physicochemical, trophic and microbiological features Summary of the intentions with which the resource(s) was developed. Gabriella Caruso National Research Council gabriella.caruso@cnr.it Gabriella Caruso National Research Council gabriella.caruso@cnr.it https://antarcticdatacenter.cnr.it/geonetwork/srv/api/records/8b1f65dc-0568-4fb0-943c-029a96e2654a/attachments/fig1%20stations.jpg https://antarcticdatacenter.cnr.it/geonetwork/srv/api/records/8b1f65dc-0568-4fb0-943c-029a96e2654a/attachments/metadati%20ant_biofilm.jpg SCAR Gazetteer of Antarctica 2021-01-01 geonetwork.thesaurus.external.theme.scar_gazetteer_multi Coordinate reference systems GEMET - INSPIRE themes, version 1.0 2008-01-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme MARINE ECOSYSTEMS MICROALGAE MICROFAUNA ANIMAL ECOLOGY AND BEHAVIOR BACTERIA/ARCHAEA GCMD - Science Keywords 2015-01-01 geonetwork.thesaurus.external.theme.gcmd-sciencekeywords IT/PNRA GCMD - Providers 2022-01-24 geonetwork.thesaurus.external.theme.gcmd-providers ANT-BIOFILM PNRA16_00105 PNRA project geonetwork.thesaurus.local.theme.PNRAproject   Creative-Commons CC BY-NC-SA 4.0         PNRA16_00105 NUMERO_SPEDIZIONE 1 biota environment 0.00 0.00 0.00 0.00 2017-11-22 2018-11-29 table 1 https://www.pnra.aq/it/project/335/microbial-colonization-benthic-environments-antarctica-responses-microbial-abundances WWW:LINK-1.0-http--link ANT-BIOFILM - PNRA project COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 This data set is conformant with the INSPIRE Implementing Rules for the interoperability of spatial data sets and services true General information about the data origin and how it gets transformed along the way from the instrument to the database.