| Title | Active and resting microbenthos in differently contaminated marine coastal areas: insights from the Gulf of Trieste (northern Adriatic, Mediterranean Sea) |
| Abstract | Marine benthic microalgae are a promising bioindicator of contamination. To date, however, investigations on the microbenthic communities subjected to multiple stressors in natural environments are still very rare. To assess whether the benthic processes of primary production and oxygen consumption, and the structure of active and resting microbenthos, were affected by sediment contamination, seven stations were sampled in different zones of the port of Trieste, subjected to multiple and diffuse contamination, and a reference site in the Marine Reserve of Miramare. No major differences in total abundance of active microbenthos were observed among sites, but the dominance of stress-resistant species and the reduction of more sensitive ones, were registered nearby the main productive activities. The densities of resting microbenthos were higher in polluted areas, and represented by key dinoflagellate species that were clearly linked to contamination. The analysis of similarity applied to both active and resting communities significantly separated the most contaminated stations from the other ones. The photosynthetic capability of active microbenthos did not seem to be affected by contamination. The maximum oxygen consumption rates observed in sediments nearby the productive activities were likely ascribable to high organic C contents and the presence of metals in reduced chemical form. |
| Source | Hydrobiologia (The Hague. Print) 806 (1), pp. 283–301 |
| Keywords | biologia marinaecologia marinamicrofitobentosstadi di resistenzaplanctonconsumo di Ossigenoproduzione primaria bentonicaaree marine costiere |
| Journal | Hydrobiologia (The Hague. Print) |
| Editor | Kluwer Academic Publishers, Boston, Paesi Bassi |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1007/s10750-017-3366-1 |
| Authors | Rogelja, Manja; Cibic, Tamara; Rubino, Fernando; Belmonte, Manuela; Del Negro, Paola |
| Text | 398700 2018 10.1007/s10750 017 3366 1 ISI Web of Science WOS 000416804200020 Scopus 2 s2.0 85028753664 biologia marina ecologia marina microfitobentos stadi di resistenza plancton consumo di Ossigeno produzione primaria bentonica aree marine costiere Active and resting microbenthos in differently contaminated marine coastal areas insights from the Gulf of Trieste northern Adriatic, Mediterranean Sea Rogelja, Manja; Cibic, Tamara; Rubino, Fernando; Belmonte, Manuela; Del Negro, Paola Ist Nazl Oceanog Geofis Sperimentale OGS; CNR Institute for Coastal Marine Environment, SS Talassografico di Taranto; Aquarium Piran Acad Elect Maritime High Sch Marine benthic microalgae are a promising bioindicator of contamination. To date, however, investigations on the microbenthic communities subjected to multiple stressors in natural environments are still very rare. To assess whether the benthic processes of primary production and oxygen consumption, and the structure of active and resting microbenthos, were affected by sediment contamination, seven stations were sampled in different zones of the port of Trieste, subjected to multiple and diffuse contamination, and a reference site in the Marine Reserve of Miramare. No major differences in total abundance of active microbenthos were observed among sites, but the dominance of stress resistant species and the reduction of more sensitive ones, were registered nearby the main productive activities. The densities of resting microbenthos were higher in polluted areas, and represented by key dinoflagellate species that were clearly linked to contamination. The analysis of similarity applied to both active and resting communities significantly separated the most contaminated stations from the other ones. The photosynthetic capability of active microbenthos did not seem to be affected by contamination. The maximum oxygen consumption rates observed in sediments nearby the productive activities were likely ascribable to high organic C contents and the presence of metals in reduced chemical form. 806 Published version Active and resting microbenthos Studio della struttura di comunita del microfitobenthos stadi attivi e di resistenza in differenti siti contaminati con test sull effetto della contaminazione su produttivita primaria e consumo di ossigeno Rogelja et al_2018.pdf Articolo in rivista Kluwer Academic Publishers 0018 8158 Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia. The Hague. Print Hydrobiologia Dordrecht The Hague. Print Hydrobiologia Boston The Hague. Print Hydrobiologia London The Hague. Print BELMONTE MANUELA fernando.rubino RUBINO FERNANDO DTA.AD002.135.001 Interazioni bento pelagiche nel controllo della dinamica del plancton marino costiero |
